USE OF SYSTEM CHARGING STATEMENT

Central Networks East USE OF SYSTEM CHARGING STATEMENT This statement is effective from 1 st April 2007 The form of this statement is subject to approval by the Office of Gas and Electricity Markets (Ofgem) Central Networks East plc Registered in England and Wales No. 2366923 Registered office: Westwood Way Westwood Business Park Coventry CV4 8LG

Contents MAIN FEATURES OF OUR PRICES THIS YEAR COMPARED TO PREVIOUS PRICES...1 SUMMARY OF CENTRAL NETWORK EAST PLC S USE OF SYSTEM CHARGES FOR APRIL 2007 TO MARCH 2008...1 GENERAL INTRODUCTION...3 WHO WE ARE...3 LICENCE OBLIGATIONS...3 PRICE CONTROL...3 CONNECTION AND USE OF SYSTEM BOUNDARY...4 THE CONTRACTUAL FRAMEWORK...4 CONTACT DETAILS...5 PRINCIPLES...7 CHARGES FOR USE OF SYSTEM...10 INTRODUCTION TO OUR CHARGES...10 DUOS CHARGES FOR NON-HALF HOURLY METERED DEMAND CONNECTIONS (SUPERCUSTOMER-BILLED)...11 DUOS CHARGES FOR HALF-HOURLY METERED DEMAND CONNECTIONS (SITE-LEVEL BILLED)...25 DUOS CHARGES FOR GENERATOR EXPORT CONNECTIONS...35 TRANSACTION CHARGES...38 SCHEDULE 1 METER POINT ADMINISTRATION AND DATA TRANSFER...38 SCHEDULE 2 ENERGISATION, DE-ENERGISATION AND RE-ENERGISATION...40 SCHEDULE 3 REVENUE PROTECTION SERVICES...42 SCHEDULE 4 OTHER SERVICES ANCILLARY TO USE OF SYSTEM...44 APPENDICES...45 APPENDIX 1 LOSS ADJUSTMENT FACTORS...45 APPENDIX 2 DEFAULT LLFIDS FOR NEW CONNECTIONS...46 APPENDIX 3 DEFAULT LLFIDS AND ASCS FOR CHANGE OF MEASUREMENT CLASS...47 APPENDIX 4 MPAN COUNTS BY LLFID...48 APPENDIX 5 - SUPERCUSTOMER METHODOLOGY FOR USE OF SYSTEM BILLING...49 APPENDIX 6 GLOSSARY...51 00

Main features of our prices this year compared to November 2006 March 2007 prices Charges have been set using the pricing methodology approved by the Authority in March 2006; Demand tariffs are increasing overall by around 1%, with some variation within and across the tariffs ; Generation DUoS charges for HV connections are increasing by around 4%, whilst charges for LV connections remain nil. Summary of Central Network East plc s use of system charges from 1 April 2007 Domestic Charges Single Rate charges (LLFID 001 & 002) Standing charge (p MPAN day) 5.61 Unit charge (p/) 0.84 2 Rate charges (003, 004, 005, 006, 007, 008, 009, 010) Standing charge (p MPAN day) 6.71 Day unit charge (p/) 0.95 Night unit charge (p/) 0.20 Heatwise charges (011) Standing charge (p MPAN day) 0.00 Afternoon unit charge (p/) 0.32 Night and evening unit charge (p/) 0.16 Preserved Restricted hour charges (900) Standing Charge (p MPAN day) 0.73 Unit Charge (p/) 0.25 Small non-domestic charges Single Rate charges (LLFID 013 and 034) Standing charge (p MPAN day) 18.43 Unit charge (p/) 0.81 2 Rate charges (016, 019, 037, 040) Standing charge (p MPAN day) 18.95 Day unit charge (p/) 0.88 Night unit charge (p/) 0.20 Evening & Weekend charges (022, 025, 043, 046) Standing charge (p MPAN day) 18.98 Day unit charge (p/) 0.94 Evening & weekend unit charge (p/) 0.41 01

Evening & Weekend 2 Rate charges (028, 031, 049, 052) Standing charge (p MPAN day) 18.93 Day unit charge (p/) 0.88 Evening & weekend unit charge (p/) 0.41 Night unit charge (p/) 0.19 Preserved Restricted hour charges (901) Standing charge (p MPAN day) 0.80 Unit charge (p/) 0.25 Medium non-domestic charges Low Voltage (LLFID 081) Standing charge (p MPAN day) 141.00 Day unit charge (p/) 0.85 Night unit charge (p/) 0.20 High Voltage (LLFID 090) Standing charge (p MPAN day) 275.00 Day unit charge (p/) 0.52 Night unit charge (p/) 0.17 Large non-domestic charges Low Voltage (LLFID 058) Standing charge (p site day) 162.00 Availability charge (p kva day) 5.23 Excess charge (p kva day) 5.23 Excess reactive power charge (p/kvarh) 0.21 Day unit rate (p/) 0.29 Night unit rate (7hr - p/) 0.11 High Voltage (LLFID 060) Standing charge (p site day) 431.00 Availability charge (p kva day) 4.09 Excess charge (p kva day) 4.09 Excess reactive power charge (p/kvarh) 0.15 Day unit rate (p/) 0.18 Night unit rate (7hr - p/) 0.08 Unmetered supplies (LLFIDs 800, 801, 802, 804) Unit charge (p/) 1.56 * It should be noted that some LLFIDs are not listed. These omissions are associated with the small number of consumers who use certain, mainly preserved services, which are additional to the main "base" charges shown here. For complete listings see Tables B, C, and D. 02

General Introduction Who We Are 1. Central Networks is the electricity distribution business covering central England. Central Networks holds two Distribution Licences covering the East and the West of the region. This statement is produced by Central Networks East plc the licensed electricity distribution business serving customers across an area totalling 16,000 km² from the north of Chesterfield in Derbyshire to south of Milton Keynes in Buckinghamshire, and from Tamworth in the west to the Lincolnshire coast in the east. Our Distribution Licence is issued under the Utilities Act (2000). In this statement Central Networks East plc is referred to as Central Networks, although certain of the responsibilities may be undertaken by associated companies or agents. Licence Obligations 2. Central Networks is obliged, under Licence Condition 4A, of its Electricity Distribution Licence, to prepare a statement in a form approved by the Office of Gas and Electricity Markets (Ofgem), setting out the charges made for the provision of Use of System. This statement sets out details of our use of system charges. 3. Words and expressions used in this statement have (unless specifically defined herein) the definitions given to them in the Act or the Licence and shall be construed accordingly. A glossary appears as Appendix 6. 4. The form of this statement is subject to approval by Ofgem. Copies of this statement can be obtained free of charge via our website, www.central-networks.co.uk. Alternatively a hard copy can be supplied with subsequent copies at a charge of 5.00 by following up the contact details in paragraph 14. Price Control 5. Central Networks is a licensed distribution business and is regulated by the Gas and Electricity Markets Authority through Ofgem. The regulation is applied via the Distribution Licence and the price control mechanism. The price control iod is five years and Ofgem prescribe the amount of revenue that Central Networks is allowed to recover from its customer base annually and over the price control iod. Use of System charges may vary from time to time, with appropriate notice, as Central Networks sets its Use of System Charges to recover its allowed revenue. 03

Connection and Use of System Boundary 6. Central Networks splits the recovery of costs between connection to the Distribution System and on-going Use of System Charges for utilisation of the network. The boundary point at which this split occurs is common for both demand and generation customers. This statement details our Use of System Charges. In addition our Use of System Charging Methodology details the methodology used to calculate these charges, whilst the Connection Charging Methodology details the methodology used to calculate connection charges. The latter statement also contains indicative charges and examples to aid understanding of connection charges. Copies of these statements can be obtained free of charge via our website, www.central-networks.co.uk. Alternatively a hard copy can be supplied with subsequent copies at a charge of 5.00 by following the contact details in paragraph 14. The Contractual Framework 7. Persons entitled to use Central Networks electricity Distribution System are those who are authorised by Licence or by exemption under the Act to supply or generate electricity ( Users ). In order to protect all users of the system, Central Networks will require evidence of authorisation before agreeing terms for use of the system. NOTE: In the rest of this commentary, requirements applying to Users should be taken to mean Licensed Suppliers or Licensed Generators only. 8. Central Networks will levy Use of System Charges for utilisation of its network for the supply of electricity to or export from Exit Points. Use of System Charges will be payable by the User who registers the Metering Point. For Exit Points registered in Supplier Volume Allocation (SVA) this will be the Party registering the Supply Number (MPAN). For Central Volume Allocation (CVA) it will be the party registering the Metering Point. 9. Persons seeking to use the system will be required, prior to using the system, to enter into an agreement with Central Networks setting out the obligations of both parties. The party seeking use of the system will be required to: pay all charges due in respect of use of the system as described in the Use of System Charging Statement and its accompanying schedules; be a party (where the Exit Points are registered in SVA) to the Master Registration Agreement (MRA) for the provision of Metering Point Administration Services within Central Networks authorised area; enter into the National Grid Company s (NGC) Connection and Use of System Code and any necessary Bilateral Agreement, governing connections to and use of NGC s transmission system, unless Central Networks is informed by NGC that this is not required in any particular case; be a party to the Balancing and Settlements Code; and 04

comply with the provisions of the Distribution Code (a copy of which is available online at www.dcode.org.uk). Alternatively if you do not have access to the internet, please contact us by following the details in paragraph 14. 10. If the applicant and Central Networks fail to agree contractual terms, or any variation of contractual terms proposed by Central Networks, either party may request settlement by Ofgem (contact details in paragraph 14). 11. While the terms and conditions in the agreements will be consistent with those in this statement, the agreement will take precedence. Where a User, having entered an agreement for use of Central Networks electricity Distribution System, ceases to be eligible to apply for use of the system for whatever reason, then the entitlement to use of the system will cease forthwith, but the oator will continue to be liable under the agreement unless and until the agreement is terminated. In order to avoid any liability in this regard, a User wishing to terminate their agreement or wishing to notify a change should give Central Networks no less than 28 days notice. Central Networks will normally respond within 28 days of a notification of change. 12. Terms and conditions for connection of premises or other electrical systems to Central Networks electricity Distribution System are contained in our Connection Charging Methodology. A copy of this statement can be obtained free of charge via our website, www.central-networks.co.uk. Alternatively a hard copy can be supplied with subsequent copies at a charge of 5.00 by following the contact details in paragraph 14. Persons seeking Use of System with respect to a new supply must apply for connection in accordance with the terms and conditions described in that statement. 13. Where a son requires a connection to Central Networks electricity Distribution System pursuant to the Act, the provisions of this statement are without prejudice to the provisions of sections 16 to 23 of the Act (those sections which deal with the rights, powers and duties of Central Networks, as an electricity distributor), in respect of the distribution of electricity to owners or occupiers of premises. Contact Details 14. This statement has been prepared in order to discharge Central Networks obligation under Condition 4A of the Licence. If you have any questions about this statement please contact us at the address shown below. Also given below are contact details for the Office of Gas and Electricity Markets should prospective users wish to enquire separately on matters relating to this statement. 05

All enquiries about this statement should be addressed to: Jane Griffith Network Strategy and Regulation Central Networks Herald Way Pegasus Business Park Castle Donington DE74 2TU Telephone: 01332 393667 Email : jane.griffith@central-networks.co.uk Non-half Hourly Metering Charges for metering and data services are detailed in a separate charges statement; this is available on our website www.central-networks.co.uk or from Jane Griffith, contact details as above. Connection Agreements and Changes to Authorised Supply Capacities (ASCs) Enquiries should be addressed to: Phil Rollinson Network Strategy and Regulation Central Networks Herald Way Pegasus Business Park Castle Donington DE74 2TU Telephone: 01332 393311 Fax: 0115 877 5991 Email: philip.rollinson@central-networks.co.uk Ofgem Enquiries should be addressed to: Ofgem 9 Millbank London SW1P 3GE Tel: 0207 7901 7000 www.ofgem.gov.uk 06

Principles 15. The following paragraphs relate to the transport of electricity on Central Networks system by Users to or from Exit Points on the system. 16. Where a supply of electricity is provided over electric lines or electrical plant comprising a part of Central Networks electricity Distribution System, a charge for use of the system will be levied on the User. The relevant charges are described in this statement. 17. The charges for each category of supply depend upon the criteria that determine eligibility for that category, including the voltage of connection to the system, the characteristics of the load or generation, and installation of the appropriate Use of System metering. 18. The charges for use of the system reflect: the costs of providing, oating and maintaining the electricity Distribution System to the standards prescribed by the Act, other than those costs which are recovered through charges paid to Central Networks in respect of connection to the system, such that electricity can be transported efficiently through the system to or from Exit Points; and the costs to Central Networks of providing certain services and forming functions for Users, on terms which Central Networks is under a duty to offer under its Electricity Distribution Licence, in order to support the oations of a fully competitive supply market in its authorised area. Central Networks may charge for these services through Use of System Charges or through transaction charges. 19. All charges for use of the system include a reasonable return on the relevant assets, and the revenues arising from the charges are subject to regulation in accordance with the terms of the Licence. 20. Charges to Users for the use of the system for demand are evaluated as if from Central Networks Grid Supply Points. These charges reflect the need to provide adequate capacity at all voltage levels to protect the security of the system and the trading of energy at Grid Supply Points. However, charges are applied to the electricity as measured at the Exit Points. 21. The charges for demand and generation use of the system may include some or all of the following elements: fixed charges to cover the costs which do not vary with the extent to which the supply is taken up. This consists of a daily rate site; charges for kva to cover system import or export capacity at each voltage level attributed to the connection. Capacity will normally be agreed with the end customer and its measurement will be determined in the most appropriate way with regard to the data available from the meter and processing facilities. Where users exceed the agreed capacity an excess charge may apply. 07

charges for excess reactive power, measured in kvarh, designed to reflect the additional utilisation of the system at all relevant voltage levels caused by excess reactive power. charges for unit delivered to or exported from the Exit Point, designed to reflect utilisation of the system at all relevant voltage levels. Units for metered supplies are based on actual meter readings or profiled consumption based on actual meter readings and/or estimated annual consumptions. Units for unmetered supplies are based on the certified estimated annual consumption of an inventory of unmetered equipment; transactional charges for certain services provided by Central Networks on an individual basis to Users. Details are given in Schedules 1 to 4 inclusive. 22. The fixed charge referred to above may include: amounts to reflect the cost of items such as customer service, billing, administration, business rates and other overheads; amounts to recover the costs payable by Central Networks to NGC in the form of exit charges. 23. Charges for metering services are separate from Use of System. Full details of our metering charges are available in a separate statement, Statement of Charges for Metering and Data Services. This can be obtained free of charge from our web-site, www.centralnetworks.co.uk, or by following up the contact details in paragraph 14. 24. The meter oator must ensure that the data provided by the metering meets Central Networks requirements for Use of System billing purposes. Whether Central Networks is appointed to carry out this task, or the User appoints another meter oator or installs their own energy metering, Central Networks reserves the right to install Use of System metering equipment. If Central Networks exercises this right, no additional charge will be made for this equipment. 25. Normally, charges for Use of System will be payable in accordance with the billing iod and payment terms agreed with the party using the system. Central Networks reserves the right to require appropriate security in respect of the charges estimated to arise, depending on the circumstances of the supply and on the basis of the agreed payment terms. Interest charges are applicable to late payments. Invoices for residential and most business supplies will generally be calculated according to the Sucustomer Methodology for Use of System Billing, a description of which is given in Appendix 5. For Exit Points with half-hourly (HH) metering, site specific invoices will be rendered. These will list the supplies to which the invoice refers, the information about the supply on which the charge has been calculated, and the amount due for each supply identified on the invoice. 26. The User must demonstrate that at all times the quantity of electricity being traded at the Grid Supply Point equals the metered quantity measured at the Exit Point adjusted for the amount of electrical losses appropriate to the voltage at which the supply is delivered/from 08

which the export is accepted and to the nature of the supply, as shown in the schedule of loss adjustment factors given in this statement. Site specific loss adjustment factors for EHV connections are available on request. Relevant metering information or being a party to the Balancing and Settlement Code will be considered to be adequate demonstration. Users should refer to the loss adjustment factors to calculate the amount of electricity that they must trade. The same loss adjustment factors are reflected automatically in the settlement system. 27. Where the supply is to be provided over Central Networks electricity Distribution System on either an intermittent or continuing basis to any premises with own generation, charges for use of the system for demand will be levied with respect to the system capacity provided to meet the maximum power required as requested by the party seeking use of the system and the extent to which that supply is taken up. 28. Where Central Networks, after evaluation of the characteristics of the requested use of the system, accepts that none of the categories of charges in the schedules of this Statement is appropriate, or where supplies are to be provided at a voltage not listed, Central Networks will offer special arrangements. Such charges will be calculated according to the same principles and methodologies as laid out in the methodology statement. In most cases, Central Networks will make its offer of terms within 28 days of receiving the application, following receipt of the full and final information necessary for the preparation of the terms. 29. Charges for demand include an allowance for NGC Exit Charges. Charges for export do not include NGC exit charges. 30. Charges for demand include an allowance for Business Rates. Charges for export do not include Business Rates. 09

Charges for Use of System Introduction to our charges This section provides technical and price information about charges for use of the system. The information is necessarily complex, and is presented in a number of tables. Line Loss Factor Class Identifiers (LLFIDs) are used to identify DUoS charges throughout the section. The LLFID forms part of the Supply Number, enabling clear identification of the charges applicable to particular sites. The section is divided into three main parts; one on LLFIDs for non-half-hourly (NHH) metered sites; one on LLFIDs for half-hourly (HH) metered sites and one on DUOS charges for generator export connections. These are further subdivided as follows: DUoS charges for non-half hourly metered demand connections (Sucustomer-billed) Table A - list of NHH LLFIDs Explanatory notes for Table A Table B Sucustomer-billed prices and technical details DUoS charges for half-hourly metered demand connections (site-level billed) General notes Table C list of site-level-billed HH LLFIDs and prices Explanatory notes for Table C DUoS charges for generator export connections General notes Table D prices Explanatory notes for Table D Note Table B shows supplier-controlled items such as Standard Settlement Configurations (SSCs), Meter witch Codes (MTCs) and profile classes against each of our LLFIDs. These lists are accurate at the time of publication, but it should be noted that:- SSCs and MTCs are listed here in numerical order only. There is no necessary link between an LLFID and any of the supplier-controlled items. Suppliers may change SSCs and MTCs, but not LLFIDs. LLFIDs are assigned at the sole discretion of Central Networks plc. 010

DUoS charges for non-half hourly metered demand connections (Sucustomer-billed) Table A - List of NHH LLFIDs The table below lists all current LLFIDs for NHH metered exit points. The list is followed by a short key to the abbreviated descriptions then by the numbered notes, referred to in the table, which explain the details of each of the charges. All of the LLFIDs in this table are billed using the sucustomer methodology see Appendix 5. LLFID Description See Explanatory Notes: 001 Domestic Single Rate 1,2,3 002 Domestic Single Rate 1,2,3 003 Domestic 2 Rate 1,2,4 004 Domestic 2 Rate 1,2,4 005 Domestic 2 Rate 1,2,4 006 Domestic 2 Rate 1,2,4 007 Domestic 2 Rate 1,2,4 008 Domestic 2 Rate 1,2,4 009 Domestic 2 Rate 1,2,4 010 Domestic 2 Rate 1,2,4 011 Domestic Heatwise 1,2,5 013 Small Non Domestic Single Rate 1,7,8,12 016 Small Non Domestic 2 Rate 1,7,9,13 019 Small Non Domestic 2 Rate 1,7,9,13 022 Small Non Domestic EWE 1,7,10,14 025 Small Non Domestic EWE 1,7,10,14 028 Small Non Domestic EWE 2 Rate 1,7,11,15 031 Small Non Domestic EWE 2 Rate 1,7,11,15 034 Small Non Domestic Single Rate 1,7,8,12 037 Small Non Domestic Two Rate 1,7,9,13 040 Small Non Domestic Two Rate 1,7,9,13 043 Small Non Domestic EWE 1,7,10,14 046 Small Non Domestic EWE 1,7,10,14 049 Small Non Domestic EWE 2 Rate 1,7,11,15 052 Small Non Domestic EWE 2 Rate 1,7,11,15 081 Medium Non Dom LV 2 Rate 1,17,18,20 082 Medium Non Dom LV MOD 1,17,18 083 MND LV8 1,17,18 084 MND LV8 MOD 1,17,18 085 MND LV0 1,17,18,22 090 Medium Non Dom HV 2 Rate 17,18,19,21 091 Medium Non Dom HV MOD 17,18,19 092 MND HV8 17,18,19 011

LLFID Description See Explanatory Notes: 093 MND HV8 MOD 17,18,19 094 MND HV SAC 17,18,19 095 MND HV8 SAC 17,18,19 096 MND HV SAC MOD 17,18,19 097 MND HV8 SAC MOD 17,18,19 098 MND HV0 17,18,19,22 099 MND HV0 SAC 17,18,19,22 800 NHH Un-metered Supplies 1,23 801 NHH Un-metered Supplies 1,23 802 NHH Un-metered Supplies 1,23 803 UM BND3 EXR&M ( >200000) 1,23,24 900 RHT DOM 1,2,6 901 RHT ND LV 1,16 Key to abbreviated descriptions used in table A DOM or Dom Domestic EWE Evening and weekend ExR&M Excludes repair and maintenance HV High voltage LV Low voltage MOD Demand modification MND Medium non-domestic RHT Restricted Hour Tariff SAC Substation Apparatus Charge UM Unmetered 0 No night hours 8 Eight hour night 012

Explanatory notes for Table A 1. These charges apply to LV exit points 2. These charges apply to domestic residential premises only 3. Standard Domestic Charge (LLFID 001 & 002). Metered on a continuous basis on a single register (or several registers summed together). The basic domestic charge is available for all existing and new exit points serving domestic residential premises, and is the default charge for all domestic exit points. 4. Domestic 2 Rate (LLFID 003 to 010). Metered on a continuous basis on two registers (day and night). "Night" means the 7 hour iod between 00.30 and 0730. 5. Special 10 hour Heatwise Service (LLFID 011). Metered on a discontinuous basis on three registers (Afternoon, Evening/Night and Boost). The Heatwise option is available only for approved, hard-wired loads, and only in combination with the Standard Domestic charge or Standard Domestic plus Economy 7 option. Metering points must be physically co-located. Afternoon, Evening and Night may be either dynamic or static iods falling within the following time windows: Afternoon: Monday to Friday - 3 hours between 1pm and 4.30pm; Saturday and Sunday - 3 hours between 1pm and 5.30pm Evening: Monday to Friday - 2 hours between 5.30pm and 10pm; Saturday and Sunday - 2 hours between 5.30pm and 10pm Night: Monday to Friday - 5 hours between midnight and 7am; Saturday and Sunday - 5 hours between midnight and 8am All the above are clock time. 6. Domestic RHT Service (LLFID 900) Metered on a discontinuous basis on a single register. The RHT service exists in four different versions and is available only on the basis of consumers preserved rights. RHT circuits may only supply approved, hard-wired loads and no supply is to be taken via these circuits outside the specified iods: when supply is available to RHT circuits vary according to the version as follows: RHT 1 - nine hours each day between 10.00pm and 08.30am the following day RHT 1a - eight hours each day between 10.30pm and 08.00am the following day RHT 2 - nine hours each day between 10.00pm and 08.30am the following day and for three hours each day between 11.00am and 5.30pm. RHT 3 - available continuously from not later than 2.00pm on Saturday and all day Sunday and for fifteen and a half hours Monday to Friday inclusive. Availability Monday to Friday twelve and a half hours between 7.00pm and 8.30am (including 8.30am on Saturday) and three hours between 10.00am and 5.00pm. Refer to the Supply Number (MTC) for times applicable to particular exit points. 013

7. These charges are applicable to small non-domestic exit points, connected at low voltage, and not normally exceeding 50kVA. 8. Where it is demonstrated that demand significantly exceeds 50kVA or, in the absence of demand data, where annual consumption exceeds 150,000, exit points will be transferred to appropriate medium or large non-domestic charges. 9. Where it is demonstrated that demand significantly exceeds 50kVA or, in the absence of demand data, where annual consumption exceeds 120,000 excluding night units, exit points will be transferred to appropriate medium or large non-domestic charges. 10. Where it is demonstrated that demand significantly exceeds 50kVA or, in the absence of demand data, where annual consumption exceeds 100,000 excluding evening and weekend units, exit points will be transferred to appropriate medium or large non-domestic charges. 11. Where it is demonstrated that demand significantly exceeds 50kVA or, in the absence of demand data, where annual consumption exceeds 100,000 excluding evening and weekend and night units, exit points will be transferred to appropriate medium or large non-domestic charges. 12. Single Rate Small Non-Domestic Charges. Metered on a continuous basis on one register (or several registers summed together). This is the default charge for all small non-domestic exit points. 13. Small Non Domestic 2 Rate. This service provides differential charging for day and night units, and is available as an option with all existing and new small non-domestic exit points. "Night" means the 7 hour iod between 00.30 and 0730. 14. Evening And Weekend Service. The evening and weekend service provides differential charging for weekday and evening/weekend units, and is available for all existing and new small non-domestic exit points. "Weekday units" are those distributed between 7:30am and 7:30pm (or such other 12 hour iod notified to suppliers from time to time) during Monday to Friday inclusive. 15. Combined 2 Rate And Evening And Weekend Service. The combined 2 rate and evening and weekend service provides differential charging for weekday, night, and evening/weekend units, and is available for all existing and new small non-domestic exit points. Unit charges are split into three rates; one applying to weekday units, another applying to night units and a third applying to evening and weekend units (for times see notes 13 and 14). 16. Non Domestic RHT Service (LLFID 901). Metered on a discontinuous basis on a single register. This option is available only on the basis of consumers preserved rights. RHT circuits may only supply approved, hard-wired loads and no supply is to be taken via these circuits outside the specified iods (see note 6 for details of iods). 17. These charges apply to Medium Non-Domestic exit points. Generally, these will have an authorised capacity more than 50kVA but less than 115kVA and Use of System will be measured using standard non half-hourly maximum demand or equivalent metering. 18. These sites, although billed through sucustomer on the basis of a standing charge and, 014

have formally agreed capacity or maximum demand limits incorporated in their connection agreements. The actual maximum demand of these sites will be reviewed iodically to ensure it conforms to the agreements. Where sites are found to exceed their capacity limits, consumers will be requested to change their usage or pay for extra network capacity. 19. These charges apply to HV exit points 20. These are the default charges for LV Medium Non Domestic exit points 21. These are the default charges for HV Medium Non Domestic exit points 22. These charges apply on the basis of consumers preserved rights where single register metering is fitted. Off-peak rates do not apply; all units are charged at day rates. 23. These charges apply to unmetered exit points. Central Networks is prepared, at its sole discretion, to offer unmetered connections where there is a known predictable load which is either continuous or controlled in a manner approved by Central Networks; or in any situation where Central Networks considers it unnecessary, impracticable or undesirable to fit a meter. Where energy consumption and demand cannot be reasonably predicted then a metered connection will be required. Unmetered connections are provided subject to the customer signing a connection agreement and providing and maintaining an accurate detailed inventory of all items connected. Central Networks can then issue an Unmetered Supply Certificate for electricity trading purposes. Where the inventory is not satisfactory to Central Networks a Provisional Certificate may be issued based on the best information available. Central Networks will review the number and nature of issued Provisional Certificates with a view to increasing the estimated annual consumption (EAC) in line with deemed growth. Provisional Certificates will not normally be issued for new unmetered connections. 24. The reduced charge for LLFID 803 is available only on the basis of consumers preserved rights. The charge does not cover the cost of the repair and maintenance of the connections. 015

Table B Technical details and prices for Sucustomer billed charges Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 1 LV Domestic Single Rate 1, 2 10, 15, 17, 22, 23, 24, 26, 27, 33, 34, 156, 500, 501, 522, 523, 532, 534, 535, 541, 542, 543, 544, 545, 548, 549, 550, 551, 556, 557, 659, 661, 801, 802, 811, 812, 814, 815, 830, 831, 833, 835, 890 0151, 0155, 0189, 0190, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0385, 0388, 0393, 0442 5.61 0.84 n/a 2 LV Domestic Single Rate 1, 2 100, 101, 103, 104, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 140, 141, 143, 144, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 556, 557, 600, 601, 603, 604, 605, 607, 608, 609, 610, 611, 613, 614, 615, 616, 618, 619, 640, 641, 643, 644, 645, 647, 648, 649, 650, 651, 653, 654, 655, 656, 658, 660, 837, 838, 839, 840 0151, 0155, 0189, 0190, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0385, 0388, 0393, 0442 5.61 0.84 n/a 016

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 3 LV Domestic 2 Rate 2 33, 34, 542, 548, 556, 557, 830, 831 0189, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0442 6.71 0.95 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 4 LV Domestic 2 Rate 2 522, 534, 543, 549, 811, 812, 814, 815, 890 0151, 0190 6.71 0.95 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 5 LV Domestic 2 Rate 2 23, 24, 26, 27, 544, 545, 550, 551 0385, 0388 6.71 0.95 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 6 LV Domestic 2 Rate 7 LV Domestic 2 Rate 8 LV Domestic 2 Rate 9 LV Domestic 2 Rate 2 10, 17, 523, 535 155 6.71 0.95 00.00 00.30 & 07.30 24.00 2 106, 110, 146, 150, 556, 557, 608, 613, 648, 653 2 100, 103, 107, 111, 140, 143, 147, 151, 600, 604, 609, 614, 640, 644, 649, 654 2 108, 109, 112, 113, 148, 149, 152, 153, 610, 611, 615, 616, 650, 651, 655, 656 0189, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0442 6.71 0.95 00.00 00.30 & 07.30 24.00 0151, 0190 6.71 0.95 00.00 00.30 & 07.30 24.00 0385, 0388 6.71 0.95 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 0.20 00.30 07.30 0.20 00.30 07.30 0.20 00.30 07.30 017

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 10 LV Domestic 2 Rate 2 101, 104, 141, 144, 601, 605, 641, 645 155 6.71 0.95 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 11 LV Domestic Heatwise 2 531, 540, 547, 553, 602, 606, 612, 617, 642, 646, 652, 657, 864, 865 0357, 0358, 0359, 0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367, 0368, 0369, 0370, 0371, 0935 0.00 0.32 3 hrs during 13.00-16.30 Mon-Fri or 13.00-17.30 Sat-Sun, Plus 'boost' 0.16 5 hrs during 00.00-07.00 Mon-Fri or 00.00-08.00 Sat-Sun and 2 hrs during 17.30-22.00 Mon-Sun 13 LV Small Non Domestic Single Rate 3, 4 15, 22, 25, 28, 29, 30, 31, 32, 33, 34, 156, 500, 501, 522, 524, 529, 530, 532, 534, 536, 538, 539, 541, 542, 543, 546, 548, 549, 552, 556, 557, 659, 661, 801, 802, 811, 812, 814, 815, 816, 817, 826, 827, 828, 829, 830, 831, 833, 835, 873, 890 0151, 0189, 0190, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0242, 0320, 0326, 0332, 0393, 0442, 0443, 0444 18.43 0.81 n/a 16 LV Small Non Domestic 2 Rate 4 522, 534, 543, 549, 811, 812, 814, 815, 874, 890 0151, 0190 18.95 0.88 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 018

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 19 LV Small Non Domestic 2 Rate 4 33, 34, 524, 542, 548, 556, 557, 817, 830, 831 0189, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0242, 0442 18.95 0.88 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 22 LV Small Non Domestic EWE 3 529, 538, 826, 827 320 18.98 0.94 07.30 19.30 Mon - Fri 0.41 00.00 07.30 & 19.30 24.00 Mon Fri & 00.00 24.00 Sat & Sun 25 LV Small Non Domestic EWE 3 29, 30, 558, 559 443 18.98 0.94 07.30 19.30 Mon - Fri 0.41 00.00 07.30 & 19.30 24.00 Mon Fri & 00.00 24.00 Sat & Sun 28 LV Small Non Domestic EWE 2 Rate 4 530, 539, 828, 829 326 18.93 0.88 07.30 19.30 Mon - Fri 0.41 00.00 00.30 All, & 19.30 24.00 Mon Fri & 07.30 24.00 Sat & Sun 0.19 00.30 07.30 019

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 31 LV Small Non Domestic EWE 2 Rate 4 25, 28, 31, 32, 546, 552, 560, 561 0332, 0444 18.93 0.88 07.30 19.30 Mon - Fri 0.41 00.00 00.30 All, & 19.30 24.00 Mon Fri & 07.30 24.00 Sat & Sun 0.19 00.30 07.30 34 LV Small Non Domestic Single Rate 3, 4 15, 22, 25, 28, 29, 30, 31, 32, 33, 34, 156, 500, 501, 522, 524, 529, 530, 532, 534, 536, 538, 539, 541, 542, 543, 546, 548, 549, 552, 556, 557, 659, 661, 801, 802, 811, 812, 814, 815, 816, 817, 826, 827, 828, 829, 830, 831, 833 0151, 0189, 0190, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0242, 0320, 0326, 0332, 0393, 0442, 0443, 0444 18.43 0.81 n/a 37 LV Small Non Domestic 2 Rate 4 522, 534, 543, 549, 811, 812, 814, 815 0151, 0190 18.95 0.88 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 40 LV Small Non Domestic 2 Rate 4 33, 34, 542, 548, 556, 557, 817, 830, 831 0189, 0191, 0192, 0193, 0194, 0195, 0196, 0197, 0198, 0199, 0242, 0442 18.95 0.88 00.00 00.30 & 07.30 24.00 0.20 00.30 07.30 020

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 43 LV Small Non Domestic EWE 3 529, 538, 826, 827 320 18.98 0.94 07.30 19.30 Mon - Fri 0.41 00.00 07.30 & 19.30 24.00 Mon Fri & 00.00 24.00 Sat & Sun 46 LV Small Non Domestic EWE 3 29, 30, 558, 559 443 18.98 0.94 07.30 19.30 Mon - Fri 0.41 00.00 07.30 & 19.30 24.00 Mon Fri & 00.00 24.00 Sat & Sun 49 LV Small Non Domestic EWE 2 Rate 4 530, 539, 828, 829 326 18.93 0.88 07.30 19.30 Mon - Fri 0.41 00.00 00.30 All & 19.30 24.00 Mon Fri & 07.30 24.00 Sat & Sun 0.19 00.30 07.30 52 LV Small Non Domestic EWE 2 Rate 4 25, 28, 31, 32, 546, 552, 560, 561 0332, 0444 18.93 0.88 07.30 19.30 Mon - Fri 0.41 00.00 00.30 All & 19.30 24.00 Mon Fri & 07.30 24.00 Sat & Sun 0.19 00.30 07.30 021

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 81 LV Medium Non Domestic LV 2 Rate 5 8 16, 524, 533, 536, 816, 817, 874 0151, 0138, 0242 141.00 0.85 00.00-00.30 & 07.30-24.00 0.20 00.30-07.30 82 LV Medium Non Domestic LV MOD 5 8 16, 524, 533, 536, 816, 817 0138, 0242 154.18 0.85 00.00-00.30 & 07.30-24.00 0.20 00.30-07.30 83 LV MND LV8 5 8 12, 19, 525, 537 258 141.00 0.85 07.00-23.00 0.29 23.00-24.00 & 00.00-07.00 Yes 84 LV MND LV8 MOD 5 8 12, 19, 525, 537 258 154.18 0.85 07.00-23.00 0.29 23.00-24.00 & 00.00-07.00 Yes 85 LV MND LV0 5 8 15, 22, 156, 500, 501, 532, 541, 659, 661, 801, 802, 833 90 HV Medium Non Domestic HV 2 Rate 91 HV Medium Non Domestic HV MOD 5 8 16, 524, 533, 536, 816, 817 5 8 16, 524, 533, 536, 816, 817 393 141.00 0.85 n/a Yes 0138, 0242 275.00 0.52 00.00-00.30 & 07.30-24.00 0138, 0242 288.18 0.52 00.00-00.30 & 07.30-24.00 0.17 00.30-07.30 0.17 00.30-07.30 022

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 92 HV MND HV8 5 8 12, 19, 525, 537 258 275.00 0.52 07.00-23.00 0.22 23.00-24.00 & 00.00-07.00 Yes 93 HV MND HV8 MOD 5 8 12, 19, 525, 537 258 288.18 0.52 07.00-23.00 0.22 23.00-24.00 & 00.00-07.00 Yes 94 HV MND HV SAC 5 8 16, 524, 533, 536, 816, 817 0138, 0242 308.00 0.52 00.00-00.30 & 07.30-24.00 0.17 00.30-07.30 Yes 95 HV MND HV8 SAC 5 8 12, 19, 525, 537 258 308.00 0.52 07.00-23.00 0.22 23.00-24.00 & 00.00-07.00 Yes 96 HV MND HV SAC MOD 5 8 16, 524, 533, 536, 816, 817 0138, 0242 321.18 0.52 00.00-00.30 & 07.30-24.00 0.17 00.30-07.30 Yes 97 HV MND HV8 SAC MOD 5 8 12, 19, 525, 537 258 321.18 0.52 07.00-23.00 0.22 23.00-24.00 & 00.00-07.00 Yes 98 HV MND HV0 5 8 15, 22, 156, 500, 501, 532, 541, 659, 661, 801, 802, 833 99 HV MND HV0 SAC 800 LV NHH Unmetered Supplies 5 8 15, 22, 156, 500, 501, 532, 541, 659, 661, 801, 802, 833 1,8 502, 503, 504, 505, 857, 858, 859, 860 393 275.00 0.52 n/a Yes 393 308.00 0.52 n/a Yes 0428, 0429, 0430, 0431 Nil 1.56 Any unmetered time regimes 023

Fixed Charge Unit Rate 1 Unit Rate 2 Unit Rate 3 LLF Class ID LAF Type Description Profile Class Meter witch Codes (MTC) SSCs MPAN Day Penc e Preserved 801 LV NHH Unmetered Supplies 1,8 502, 503, 504, 505, 857, 858, 859, 860 0428, 0429, 0430, 0431 Nil 1.56 Any unmetered time regimes 802 LV NHH Unmetered Supplies 1,8 502, 503, 504, 505, 857, 858, 859, 860 0428, 0429, 0430, 0431 Nil 1.56 Any unmetered time regimes 803 LV UM BND 3 (>200,000) EXR&M 1,8 502, 503, 504, 505, 857, 858, 859, 860 0428, 0429, 0430, 0431 Nil 0.96 Any unmetered time regimes Yes 900 LV RHT DOM 2 510, 511, 513, 514, 516, 517, 518, 519, 521, 526, 527, 528, 554 0052, 0053, 0055, 0056, 0063, 0112, 0113, 0115, 0270, 0284, 0285, 0354, 0434 0.73 0.25 Any RHT times (see note 19) Yes 901 LV RHT ND LV 4 510, 511, 513, 514, 516, 517, 518, 519, 521, 526, 527, 528, 554 0052, 0053, 0055, 0056, 0063, 0112, 0113, 0115, 0270, 0284, 0285, 0354, 0434 0.80 0.25 Any RHT times (see note 19) Yes 024

DUoS charges for half-hourly metered demand connections (site-level billed) General notes These charges apply to exit points where half-hourly metering is installed. Authorised Supply Capacity (ASC) ASCs are usually agreed with end-consumers at the time of connection and incorporated as part of the formal Connection Agreement that Central Networks has with these consumers. Authorised supply capacity is granted in blocks of kva as follows: 0-100kVA in multiples of 5kVA 100-250kVA in multiples of 10kVA 250-500kVA in multiples of 25kVA 500-1000kVA in multiples of 50kVA Above 1000kVA in multiples of 100kVA Changes in ASC can only be made with the formal agreement of Central Networks. Requests for such changes may depend on the terms of agreement made at the time of connection and must be made in writing by consumers or by their appointed agents see page 6 for contact details. The supplier of a site is responsible for ensuring the ASC remains appropriate to their customer s needs at all times (and particularly at the time of change of ownership/tenancy). Central Networks East will continue to bill capacity charges to suppliers on the basis of the existing ASC until a revised ASC is agreed. We will not, under normal circumstances, make any retrospective adjustment to capacity charges correctly charged. Sites, MPANs and Incomplete Registrations The charges below are billed at site-level. A site is defined as a supply with a single authorised supply capacity on a single voltage. Most sites are single MPANs, but there are approximately seven hundred sites in Central Networks East s area comprising more than one MPAN. Their MPANs having LLFIDs 990 or 991 will normally identify multi-mpan sites. If the mutually conditional MPANs that make up a multi-mpan site get separated in the registration process, typically because of incomplete registration by a new supplier, we shall continue to bill old suppliers for the complete site until the registrations of all relevant MPANs are in line. We will, however, communicate with both suppliers as soon as we are aware of this happening. HH Tariff Elements Bills for half hourly metered sites may include the following elements:- A fixed charge for equipment and service, including accounting and administrative services; An authorised supply capacity charge, kva, for agreed available system capacity; Charges for day and night transport of electricity over the system. An excess capacity charge, if a site exceeds its authorised supply capacity. An excess reactive power charge. 025

Availability Charge Each site will be subject to an availability charge based on the agreed ASC. The standard charge will be a site s ASC multiplied by a pence day kva rate. With the exception of sites that change their ASC, the basis of this charge should remain the same for the lifetime of a connection. Highest Maximum Demand A site s usage of its authorised supply capacity is determined every month by means of a highest maximum demand (HMD). How the HMD is established is dependent upon the metering available at a site. For normal single-mpan, multi-channel metered sites, the kva HMD for a month is reached by applying a standard kva formula to the kw and leading and lagging data-flows for each half-hour in the month. The HMD is the highest HH value in the billing iod, typically a calendar month. The normal or default formula is:. kva = 2 X ( 2 + (kvarh lead + kvarh lag) 2 ) For sites where single-channel metering is still in use, in the short-term at least, it will be assumed that meters deliver zero values for lead and lag and the HH data will be treated in the same way as multi-channel. This means effectively that the HMD, which will be used for DUoS billing kva ASC purposes, will be a kw value. The invoice, however, will still express the value as kva. Where a site requires aggregation of such data from a number of meters to be compared against a single ASC, the calculation of kva values will follow the same formula, but the HH data from each meter will be aggregated before a highest value is determined. The Excess Capacity Charge When a site s HMD exceeds its ASC, the supplier will be charged an excess capacity charge for that particular month. This will be in addition to the normal availability charge. The excess charge will be based on the actual value of kva excess. So, for instance, if a site with an ASC of 200 kva recorded a monthly HMD of 201 kva, the supplier would be charged 1 x the excess charge. Day and Night Units The standard times for day and night are the same throughout the year and are clock times as follows: Day 00.00 to 00.30 and 07.30 to 24.00; Night 00.30 to 07.30. 026

The Excess Reactive Power Charge The excess reactive power charge applies when a site s total reactive power (measured in kvarh) exceeds 33% of total active power (measured in ) in a billing iod. This threshold is equivalent to an average power factor of 0.95 during the iod. Any reactive units in excess of the 33% threshold are charged for at the rate appropriate to the particular tariff. Billing Period Charges are billed in calendar months. Technical Details With the exception of the pseudo half-hourly charges for unmetered supplies (LLFIDs 804 and 805): 1. The standard settlement configuration for all HH LLFIDs is 9999; 2. The meter timeswitch codes which can be used against HH LLFIDs are: Meter witch Codes 212, 213, 214, 215, 216, 217, 700, 701, 702, 703, 704, 705, 706, 707, 708, 709, 710, 711, 712, 713, 714, 715, 716, 717, 718, 845, 846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 863 027

Table C List of Central Network East plc s site-level billed HH LLFIDs and prices Fixed Charges Availability Charge Excess Charge Day Unit Rate Night Unit Rate Excess Reactive Power See explanatory notes : Preserved LLF Class Description (p site day) (p/kva day) (p/kva day) 58 LV Half Hourly 162.00 5.23 5.23 0.29 00.00-00.30 & 07.30-24.00 60 HV Half Hourly 431.00 4.09 4.09 0.18 00.00-00.30 & 07.30-24.00 0.11 00.30-07.30 0.08 00.30-07.30 kvarh 0.21 A 0.15 B 804 HH Unmetered Supplies Nil N/A N/A 1.56 All Day E, F 805 UM HH ExR&M Nil N/A N/A 0.96 All Day E, F, G Yes 824 Network Rail Bytham (Import) H 825 Network Rail Grantham (Import) H 826 Network Rail Staythorpe (Import) H 827 Network Rail Retford (Import) H 828 Network Rail Rugby (Import) Details of charges available on request H 829 Network Rail Tamworth (Import) H 830 Network Rail Wolverton (Import) H 835 Bombardier (Import) H 836 Corus, Corby (Import) H 837 Acordis, Spondon (Import) H 029

Fixed Charges Availability Charge Excess Charge Day Unit Rate Night Unit Rate Excess Reactive Power See explanatory notes : Preserved LLF Class Description (p site day) (p/kva day) (p/kva day) kvarh 839 GEC Alsthom (Import) H 840 Stanton plc (Import) H 841 Toyota (Import) H 842 RR A,B & E (Import) H 843 RR Sinfin C (Import) H 844 ABR Foods (Import) H 845 Derby Cogeneration (Import) H 846 Castle Cement (Import) H 847 Rugby Cement (Import) H 848 Cov & Sol Waste (Import) H 849 Bentinck (Import) H 851 EHV Generic (Import) H 852 Asfordby 132kV (Import) H 853 Calvert Landfill (Import) Details of charges available on request H 854 Weldon Landfill (Import) H 855 Goosy Lodge Power Plant (Import) H 856 BAR Honda H 857 Burton Wold Wind Farm H 030

Fixed Charges Availability Charge Excess Charge Day Unit Rate Night Unit Rate Excess Reactive Power See explanatory notes : Preserved LLF Class Description (p site day) (p/kva day) (p/kva day) kvarh 858 Network Rail Bretton (Import) H 859 Bambers Farm Wind Farm (Import) H 860 Vine House Wind Farm (Import) Details of charges available on request H 861 Red House Wind Farm (Import) H 862 Daneshill Landfill (Import) H 863 Corby Power (Import) H 919 LV Half Hourly Mod 1 175.18 5.23 5.23 0.29 00.00-00.30 & 07.30-24.00 0.11 00.30-07.30 0.21 A, C 920 LV Half Hourly Mod 2 175.18 5.23 5.23 0.29 00.00-00.30 & 07.30-24.00 0.11 00.30-07.30 0.21 A, C 924 HV Half Hourly Mod 1 444.18 4.09 4.09 0.18 00.00-00.30 & 07.30-24.00 0.08 00.30-07.30 0.15 B, C 925 HV Half Hourly Mod 2 444.18 4.09 4.09 0.18 00.00-00.30 & 07.30-24.00 0.08 00.30-07.30 0.15 B, C 929 LND HV SAC 431.00 4.42 4.42 0.18 0.00-00.30 & 07.30-24.00 931 LND HV M1 SAC 444.18 4.42 4.42 0.18 00.00-00.30 & 07.30-24.00 0.08 00.30-07.30 0.08 00.30-07.30 0.15 B, D Yes 0.15 B, C, D Yes 031

Fixed Charges Availability Charge Excess Charge Day Unit Rate Night Unit Rate Excess Reactive Power See explanatory notes : Preserved LLF Class Description (p site day) (p/kva day) (p/kva day) 932 LND HV M2 SAC 444.18 4.42 4.42 0.18 00.00-00.30 & 07.30-24.00 990 LV Half Hourly Multi-MPAN 991 HV Half Hourly Multi-MPAN 162.00 5.23 5.23 0.29 00.00-00.30 & 07.30-24.00 431.00 4.09 4.09 0.18 00.00-00.30 & 07.30-24.00 0.08 00.30-07.30 0.11 00.30-07.30 0.08 00.30-07.30 kvarh 0.15 B, C, D Yes 0.21 A, I 0.15 B, I 032

Explanatory notes for Table C A. These charges apply to LV exit points. B. These charges apply to HV exit points. C. This type of charge allows sites with significant off-peak usage to exceed their standard daytime ASC by certain amounts, without incurring extra charges. In effect, sites that have mods granted to them have two ASCs for excess purposes, one for a day iod and a larger one for a night iod. Like normal daytime ASCs, night-time ASCs are granted to sites under the terms of a connection agreement. There are two MOD regimes, the difference between them being the definition of the iod when a night-time ASC is applicable. M 1. Night is between 20.00 and 08.00 on weekdays and all weekend. M 2. Night is between 24.00 and 07.00 every day of the week. The daytime ASC will form the basis for the standard ASC charge for such sites. This type of charge affects excess calculations only. Excess charges can come into effect under three circumstances, when: The daytime ASC is exceeded; The night-time ASC is exceeded; Both ASCs are exceeded. D. These charges include a supplementary charge for the provision of substation apparatus. This service is restricted to consumers with preserved rights. E. These charges apply to unmetered exit points. Central Networks offers, at its sole discretion, unmetered connections where there is a known predictable load, which is either continuous or controlled in a manner approved by Central Networks; or where Central Networks considers it unnecessary, impracticable or undesirable to fit a meter. Where energy consumption and demand cannot be reasonably predicted then a metered connection will be required. Unmetered connections are provided subject to the customer signing a connection agreement and providing and maintaining an accurate, detailed inventory of all items connected. Central Networks can then issue an Unmetered Supply Certificate for electricity trading purposes. Where the inventory is not satisfactory to Central Networks a Provisional Certificate may be issued based on the best information available. Central Networks will review the number and nature of issued Provisional Certificates with a view to increasing the estimated annual consumption (EAC) in line with deemed growth. Provisional Certificates will not normally be issued for new unmetered connections. F. This charge applies to consumers using pseudo half-hourly metering. G. This charge is available only on the basis of consumers preserved rights. The charge does not cover the cost of the repair and maintenance of the connections. Such costs are instead charged on an actuals basis as they arise. 033

H. These charges are site specific and apply only to particular exit points with very high capacity (typically EHV connected). Details of these charges, together with relevant line loss factors, will be made available to Suppliers on application. I. These charges apply to sites with more than one import MPAN. 034

DUoS charges for generator export connections General notes Central Networks will make charges for Use of System (UoS) relating to generators connecting after the 31st March 2005. For the avoidance of doubt, no charges will be made in relation to generators already connected at this date unless charges were in existence prior to April 2005, or if there are material changes to their use of the system for example increased capacity. The charges are designed to recover the costs of the connection that have been met by Central Networks, together with the costs of repair and maintenance. The charges do not recover the cost of eventual replacement of life expired assets however, and any such replacement will be the subject of connection charges. Use of System charges for larger generators are based on the export capacity (chargeable capacity) used, measured in kva, as reflected in the connection agreement. For small LV connected generators, which do not have metering capable of collecting HH export data, it is not practical to charge in this way, and an equivalent unit charge is used. Unit charges are based on the LV generator capacity charge, and are calculated using average load factors. Charges for EHV connected generation will be site specific. These charges will provide focussed cost reflective economic signals to generators that will encourage efficient connection to the network. The charges will be set to recover the three elements of allowed revenue relevant to each particular EHV connected generator with reference to the actual cost of connection. Table D Generator Use of System Charges EHV connected (HH metered) Site specific 1 HV connected (HH metered) 1.08 pence kva day LV connected (HH Metered) Nil 2 LV connected (NHH Metered) excluding SSEG 3 Nil 2 LV connected (NHH Metered) SSEG 3 Nil 2 Explanatory notes for Table D Charges for HH metered embedded generators will be billed individually at site level. Charges for NHH metered embedded generators will be billed at the aggregate level via the sucustomer methodology (see appendix 5). 1 Charges will be determined individually in accordance with our methodology 2 Charges are nil initially, based on our forecasts that there will be no reinforcement costs arising from this class of connection in the short term. If reinforcement costs do arise the charges will cease to be nil. The need for reinforcement will depend on the locations of connection, the size of generators and, particularly in the case of SSEG, the degree of penetration and clustering 3 Small Scale Embedded Generation 035

Table E LLFIDs for post-april 2005 generator connections LLFID Description 986 LV NHH Export SSEG 2005 987 LV NHH Export exc SSEG 2005 988 LV HH Export 2005 989 HV HH Export 2005 Pre-April 2005 Connections As indicated above, generator connections made before the 1 st April 2005 are not subject to use of system charges. The LLFIDs listed below, in table E, are used to identify these generators. Table F LLFIDs for pre-april 2005 generator connections LLFID Description 600 Network Rail Bytham (Export) 601 Network Rail Grantham (Export) 602 Network Rail Staythorpe (Export) 603 Network Rail Retford (Export) 604 Network Rail Rugby (Export) 605 Network Rail Tamworth (Export) 606 Network Rail Wolverton (Export) 607 Acordis (Export) 609 ABR Foods (Export) 610 Derby Cogeneration (Export) 612 Calvert Landfill (Export) 613 Weldon Landfill (Export) 614 Goosy Lodge Power Plant (Export) 615 Burton Wold Wind Farm (Export) 616 Network Rail Bretton (Export) 617 Bambers Farm Wind Park (Export) 618 Vine House Wind Farm (Export) 619 Red House Wind Farm (Export) 620 Daneshill (Export) 993 DOM NHH Export 994 SND NHH Export 995 MND LV NHH Export 996 MND HV NHH Export 997 EHV Export (HH) 998 LV Export (HH) 999 HV Export (HH) 036

In addition to the generators listed above which are traded in SVA, the following embedded generators are traded in the CVA market: MSID Description 7015 Corby Power 7043 Derwent Cogeneration 037

Transaction Charges Schedule 1 Meter point administration and data transfer Services to Suppliers Central Networks provides meter point administration services as required under the Licence and the Master Registration Agreement (MRA). These services cover the provision of various data from Central Networks meter point registration service/database and are charged for on a transactional basis. Persons applying for use of these services must be licensed suppliers and/or signatories to the MRA and should contact: Jane Jones MPAS Oations Central Networks plc Phone: 01332 393852 Herald Way Mobile: 0780 1195073 Pegasus Business Park e-mail: mpasoations@central-networks.co.uk Castle Donington DE74 2TU Contact notice facility 6.00 Manual amendment of database By arrangement Full refresh (other than one year for Data Aggregator) 500 Selective refreshes 25.00 Per Supply Number Resends 25.00 Rejections of DTN flows 6.00 Reports to Elexon (under clause 27.4) 25.00 Report to Data Aggregator (under clause 27.5) 25.00 Ad hoc miscellaneous reporting By arrangement NB. Clause numbers above refer to the Master Registration Agreement Charges for dataflow investigations and MPAN investigations are by arrangement. 038

Services to other distribution businesses Central Networks are able to provide a Metering Point Administration Service (MPAS) for premises connected to another Licensee s Distribution Network 1, which is embedded in Central Networks Distribution Services Area. In accordance with our licence conditions Central Networks can provide the following services: The provision of a register that holds all Metering Point Administration Data (MPAD) as defined in Schedule 2 of the Master Registration Agreement (MRA). 2 For the avoidance of doubt Central Networks shall not be responsible for the creation, amendment, update or deletion of any of the MPAD items. The provision of such data (as is reasonably required) to: Any electricity supplier or agent thereof. Any sons identified in the Balancing & Settlement Code as an appropriate son for the receipt of data for settlement purposes. Any son identified in the MRA as entitled to such data for the purpose of facilitating changes of electricity supplier in respect of any premises. The maintenance of an enquiry service for the provision to any customer or an electricity supplier, on request and free of charge to that customer, of such data contained in the register as is relevant to the supply of electricity to premises which are (or are to be) owned or occupied by the customer. The charge for providing these services is subject to negotiation and will depend on the number and types of MPANS involved. We would need to know, for instance, the current and forecast numbers of NHH and HH MPANS. 1 Electricity Distribution Licence: Standard Conditions. Section C Condition 37.2 2 Master Registration Agreement Version 8.1 dated 5 January 2004 039

Schedule 2 Energisation, de-energisation and re-energisation DE/RE ENERGISATION A charge will be made each time a visit is made to de-energise or re-energise a system: Price transaction Re- / de-energisation 30.00 Re-energisation and de-energisation at same visit 46.00 The charges above are applicable to the vast majority of low voltage connections. For EHV, HV and extraordinary LV connections, Central Networks reserves the right to apply site-specific charges for de/re-energisation on a time and materials basis. Additional notes We require a minimum of 5 working days notice for an LV connection or a minimum of 15 working days notice for an HV connection, or such other iod as may be specified in any agreement with us to that effect. Please note that for HV de-energisations, we reserve the right to extend the notice iod due to network considerations or out of hours resourcing. We also reserve the right to cancel the de-energisation as a consequence of severe weather expectations or actual impact on our system or resources. In these cases the de-energisation will be re-scheduled accordingly. De-energisation and subsequent re-energisation by us resulting from a supplier s failure to comply with the terms of his Use of System Agreement, will be at the supplier s expense. As part of Central Networks' commitment to safety we iodically visit sites that we deem to be potentially vacant premises. We derive this from the energisation status where we have been advised, via the Supplier Hub, that the status is de-energised. After each visit we will advise the appropriate supplier where we believe the energisation status is incorrectly recorded. We would then expect the Supplier to conduct their own investigation into the status, and, if appropriate, to correct that status. If we re-visit the site, usually at least six months later, and it is still recorded as de-energised and, as a result of this second (or subsequent) visit, we believe it to be energised, then we reserve the right to make the following charge to the Supplier for the second and any subsequent visit REPEAT VISIT TO DE-ENERGISED SITES 100 040

Visit to disconnect Suppliers wishing to request a disconnection must submit a Disconnection Notice in accordance with their Use of System Agreement. Where a supplier requests the disconnection of a site, then an individually assessed charge will be quoted. Low voltage service termination equipment would normally be removed within 15 working days but up to 3 months notice may be required to remove high voltage substation plant. In the case of EHV connections we should be consulted at an early stage and a programme for the removal of equipment will be subject to individual assessment. 041

Schedule 3 Revenue Protection Services Services Ancillary to Use of System The way in which some ancillary services are provided will depend on site-specific requirements and / or Supplier instructions. These charges are therefore indicative only. Investigation where evidence of taming found 172.20 Includes replacing the meter (but not the cost of the meter), storage of meter and records up to 6 months, investigation and report. The charge assumes that access is obtained by the second visit. Subsequent visits will be charged at 43.35 visit in these cases. Investigation where suspected taming found or malicious damage to service installation 76.30 Includes replacing the meter (but not the cost of the meter), storage of meter and records up to 6 months, investigation and report (where appropriate) The charge assumes that access is obtained by the second visit. Subsequent visits will be charged at 43.35 visit in these cases. Customer Service visit includes 43.35 Removing or replacing fuse Changing accidental damage Reseal (where single reseal only multiple reseal see below) Visit at Supplier request, no interference found Revisit N.B. this list is not exhaustive Illegal un-metered supply, connect load (plus investigation cost (where appropriate) 43.35 Miscellaneous work in normal working hours (for the first hour or part thereof, then hourly) 43.35 Outside normal working hours, additional charge 137.39 Additional oative (oational requirement) 92.00 Provide witnesses for court (full day or part thereof) 249.90 Additional statement for CPS 22.95 Obtaining a Magistrate s Warrant under The Rights of Entry (Gas and Electricity Boards) Act Quote 1954 Storage of evidence over 5 months at Supplier s request Over 5 months and up to 1 year 70.00 Each year or part thereafter 120.00 Additional Security Devices Quote Additional labour (includes locksmith, carpenter, dog handler or other parties needed to safely Quote action a Magistrates Warrant Copy documents from archive Quote Example of charge for interference to meter in normal working hours on first or second visit with single oative; 172.20 + meter Example of charge for suspected interference / damage to meter in normal working hours on first visit with single oative; 76.30 + meter Multiple MPAN reseals in same visit may be charged at time only, if applicable Normal working hours are Monday to Friday 8.00am to 4.00pm. 042

METER DAMAGE Where damage to a meter provided by Central Networks is found, whether deliberate or accidental, the supplier will be subject to a charge for the cost of that meter: Single Phase (meter only) Single rate credit 10.32 Multi-rate credit (not including timeswitch) 10.32 Heatwise type 97.88 Radio telemeter / 2 rate meter with internal timer 40.64 Single rate token 59.00 Multi-rate token (not including timeswitch) 59.00 Heatwise token 140.44 Single rate smartcard 59.00 Multi-rate smartcard (not including timeswitch) 59.00 Poly-Phase (meter only) Single rate credit 32.34 Multi-rate credit (not including timeswitch) 35.53 Programmable 63.25 CT Meters (depending on type) Minimum 123.42 Time Control Time/teleswitch single phase 31.91 Time/teleswitch poly-phase 63.84 043

Schedule 4 Other services ancillary to use of system Radio teleswitching service Central Networks may provide radio teleswitch services to those who wish to sponsor group codes. The charges for these services will be fixed by agreement in each case and will reflect the level of complexity in the proposed arrangements. Each year Central Networks will bid for future message capacity on the national Radio Teleswitching System. Capacity requirements for the year (April to March) will be forecast in November of the preceding year. To assist with this forecast, suppliers wishing to sponsor group codes are requested to give Central Networks notice of anticipated future requirements for Radio Teleswitching services in July each year. Notice should be sent to: John Hill Senior Contracts Executive Network Strategy and Regulation Central Networks Herald Way Pegasus Business Park Castle Donington DE74 2TU Telephone: 01332 393322 Email: john.hill@central-networks.co.uk Notice provided under these arrangements will not confer liability on either Central Networks to secure or reserve messaging capacity, or on suppliers to take up capacity for which they give notice of an anticipated future requirement. 044

Appendices Appendix 1 Loss adjustment factors Authorised electricity oators, providing a supply of electricity from any entry point into Central Networks distribution system (including a generator entry point embedded in the system or a supply point from the transmission system), are required to demonstrate that the amount of electricity entering the system is sufficient to meet the supply in accordance with the following adjustment factors. Adequate supply can be demonstrated either by membership of the Balancing and Settlements Code or by provision of metering information on the relevant supply and load(s). The table below indicates the factor by which supplies taken from the Grid Supply Point must exceed the take at the exit point from the system, varying according to the time of day, the season and the voltage of connection. For exit points with very high capacity connections (generally EHV), special assessment where appropriate will determine the loss adjustment factor which is relevant to the particular exit point. In some circumstances, special low-loss equipment (such as transformers) may be available and can be included in the connection. Loads with a poor power factor may require special assessment. Loss adjustment factors are applicable over calendar months and the times given in the table are clock times. The factors reflect the total losses on the system as attributable to the relevant voltages. Loss adjustment factors April 2007 to March 2008 Time Slots (Clock Time) HV Exit Points LV Exit Points Night 00:30 07:30 1.012 1.051 Monday Friday 16:00 19:00 November to February 1.043 1.088 Monday Friday 07:30 16:00 & 19:00-20:00 November to February 1.030 1.072 All other times 1.028 1.070 For generators embedded in Central Networks electricity distribution system the output of the generator will be grossed up to the equivalent of GSP supplies in a way which conforms with the above factors. 045

Appendix 2 Default LLFIDs for new connections When a new connection is made to the system, in the absence of any request from the supplier for specific charges, default LLFIDs will apply. In general these will reflect the simplest form of charges applicable to the particular class of exit point. For example, in the case of domestic exit points, single rate domestic standard charges will apply. For exit points where the metering system or other factors influencing eligibility for particular charges become incompatible with the LLFID allocated, the LLFID will be changed to the appropriate default (see below). Advice on technical requirements and choice of DUoS charges is available on request. Default LLFIDs are as follows: Exit Point Class Default LLFID for new MPANs Domestic 001 Small non-domestic (non 3- phase) 013 Small non-domestic (3-phase) 034 Medium non-domestic LV 081 Medium non-domestic HV 090 Large non-domestic LV 058 Large non-domestic HV 060 Unmetered 800-805 (see notes 27-31) 046

Appendix 3 Default LLFIDs and ASCs for change of measurement class When suppliers change consumers from NHH metering to HH metering and vice versa, invalid combinations of market domain data may result, typically an invalid combination of LLFID and measurement class (MC). Resolving such combinations and their implications can sometimes hold up billing. NHH to HH Metering When a consumer moves from NHH to HH, a formal ASC should be granted and incorporated in a connection agreement. However, this process takes time. In the shortterm, to enable DUOS billing to proceed, such sites will be given the following default LLFIDs and ASCs. These are temporary and intended for billing purposes only. FROM NHH TO HH Charge Type LLFIDs Charge Type LV small nondomestidomestic 013 052 LV large non- LV medium nondomestidomestic 081 085 LV large non- HV medium 090 099 HV large nondomestic non-domestic Default Default LLFID ASC (kva) 058 25 058 70 060 100 Suppliers are advised to bear these default ASCs in mind, particularly in the context of our excess capacity charges. When the ASC from the Connections Agreement process results in an ASC that differs from the default used, we do not intend making retrospective billing amendments. HH to NHH Metering When suppliers move sites from HH to NHH metering, the LLFID will be changed according to the profile class allocated by the supplier as follows: FROM HH TO NHH Charge Type LLFIDs Charge Type Profile Class Default LLFID HH LV 058 & 919 923 LV small nondomestic 03-04 034 HH LV 058 & 919 923 LV medium non-domestic 05-08 081 HH HV 060 & 924-934 HV medium non-domestic 05-08 090 Where previously HH metered sites are given unlikely looking profile classes (e.g. domestic 01 or 02), the data combinations will be kept invalid whilst investigations are made. 047

Appendix 4 MPAN counts by LLFID This is a breakdown of MPANs registered in Central Networks MPAS as at 31 December 2006. The table shows only those LLFIDs where the number of MPANs is 100 or more. LLFID Description No of MPANs 1 Domestic Single Rate 1,174,533 2 Domestic Single Rate 144,029 3 Domestic 2 Rate 519,911 4 Domestic 2 Rate 419,183 7 Domestic 2 Rate 6,136 8 Domestic 2 Rate 84,195 11 Domestic Heatwise 57,914 13 Small Non Domestic Single Rate 56,315 16 Small Non Domestic 2 Rate 16,764 19 Small Non Domestic 2 Rate 15,318 22 Small Non Domestic EWE 994 28 Small Non Domestic EWE 2 Rate 2,374 31 Small Non Domestic EWE 2 Rate 5,197 34 Small Non Domestic Single Rate 42,098 37 Small Non Domestic 2 Rate 26,354 40 Small Non Domestic 2 Rate 6,062 43 Small Non Domestic EWE 1,314 49 Small Non Domestic EWE 2 Rate 3,685 52 Small Non Domestic EWE 2 Rate 7,392 58 LV Half Hourly 7,028 60 HV Half Hourly 2,732 81 Medium Non Dom HV 2 Rate 7,121 83 MND LV8 239 85 MND LV0 739 90 Medium Non Dom HV 2 Rate 228 800 NHH Un-metered Supplies 490 801 NHH Un-metered Supplies 1,543 900 RHT DOM 4,031 901 RHT ND LV 1,707 990 LV Half Hourly Multi-MPAN 909 991 HV Half Hourly Multi-MPAN 470 048

Appendix 5 - Sucustomer methodology for use of system billing The Sucustomer approach to use of system billing makes use of the way that the supplier s energy settlements are calculated. In brief, the use of system charge to the supplier generally will have a fixed portion tied to the number of metering point administration numbers (MPANs) supplied and a unit portion tied to consumption. The charge is calculated in a way that corresponds to the calculation of the supplier s energy purchases, as follows. 1. Settlements Process Suppliers register MPANs that they supply, within Central Networks authorised area, with Central Networks Meter Point Administration Service (MPAS). Suppliers also pass on the registration details to the data aggregator, who puts them into the settlements process. The settlements process consists of the following steps: Data collectors pass consumption information to the data aggregator based on iodic meter reads and estimates. The data aggregator aggregates consumption by supplier and settlement class and sends it to the Supplier Volume Allocation Agent (SVAA). SVAA profiles supplier consumption into half hour values to calculate energy purchases and to generate a use of system report that details consumption by settlement class (NOTE : volumes included in the report are not subject to the GSP correction factor). Central Networks electricity distribution business receives a use of system report detailing consumption by settlement class for all suppliers oating in Central Networks authorised area. Each supplier receives a copy of that use of system report (with consumption figures for other suppliers removed). For each settlement day, the above steps are carried out normally once for an initial settlement run, three times for a reconciliation settlement run up to three months apart, and once for a final reconciliation run up to six months after the third reconciliation run, in accordance with the settlement timetable. Under exceptional circumstances there may also be post-final dispute runs. This process builds up an increasingly accurate picture of consumption. Suppliers receive a daily statement from Central Networks detailing use of system charges and consumption ( and MPAN count) by settlement class for a given settlement day and a specific settlements run. Suppliers also receive a iodic bill showing amounts due. The bill covers all settlement days for which use of system reports have been received during the financial iod and takes reconciliation into account. 049

2. Bills, statements and use of system reports Use of system reports: SVAA send use of system reports to suppliers and Central Networks on a daily basis. These reports will detail the supplier s consumption on a particular day in the past, i.e. the settlement day. This consumption is expressed in terms of totals and, where appropriate, an MPAN count. For each settlement day, up to six use of system reports (initial, reconciliation one, reconciliation two, reconciliation three, final reconciliation and when appropriate dispute final reconciliation) will be sent out by SVAA. The final reconciliation report is sent fourteen months after the settlement day itself (i.e., the day when the electricity was actually consumed). The dispute final reconciliation is currently sent 28 months after the settlement day itself. Statements: These are produced daily, i.e. for each settlement day for which a use of system report has been received by Central Networks. They are calculated by taking consumption for a settlement class for a supplier and applying a use of system charge to it. The unit charge portion of a use of system charge is applied to the relevant total and the fixed charge portion to the MPAN count. Statements do not take account of previous reconciliation runs or VAT. Bills: These are calculated on a iodic basis and sent by Central Networks to each supplier for whom Central Networks is delivering supplies of electricity through its distribution system. These iodic bills cover each settlement day whose consumption figures (in the form of a use of system report) have been received on a day within the financial iod. Unlike statements, bills take account of previous reconciliation runs and include VAT. 3. Reconciliation and interest Reconciliation is the process that ensures the cash positions of suppliers and Central Networks are continually corrected to reflect later and more accurate consumption figures. Any monies over or under claimed after receipt of one use of system report should be compensated (including interest) on receipt of the following and more accurate report. The bill calculated from the current reconciliation run is compared with that calculated on the previous run. The difference is known as the reconciliation amount. A negative reconciliation amount represents an amount that Central Networks must pay to the supplier, provided that the more accurate consumption is less than previously billed and paid. A positive reconciliation amount represents an additional amount that the supplier must pay to Central Networks (as the more accurate consumption is more than was previously billed). The compound interest payable on the reconciliation amount is calculated by formula and individual amounts of such interest are aggregated for a supplier for a single settlement day and included on the bill. Consumption for all settlement days received during the financial iod is included on the bill. 050

Appendix 6 Glossary ASC (Authorised Means the agreed maximum capacity measured in kilo voltames the connectee may take from the Distribution System Supply Capacity) through their point of connection. Act The Electricity Act 1989 as amended by the Utilities Act 2000. Annuity Factor A factor to represent the lifetime costs of capital expenditure. Balancing and Settlement Code Connection Charging Methodology CUSC CVA De-energisation Disconnection Disconnection Notice Distribution Code Distribution Licence Distribution Reinforcement Model (DRM) (500kW Model) Distribution System Distributed Generator Electricity Distribution Licence (EDL) Exit Point The Balancing and Settlement Code dated 14 August 2000, including all Party Service Lines and BSC Procedures (as therein defined) made under it, as at the Go-live Date. The principles on which and the methods by which, for the purposes of achieving the objectives referred to in paragraph 3 of standard condition 4B (Connection Charging Methodology Statement), connection charges are determined. Means the Connection and Use of System Code governing connection to and use of NGC s transmission system. Central Volume Allocation. Means the movement of any switch, the removal of any fuse, or the taking of any other step to deliberately prevent the flow of electricity from the Distribution System to the connection. Our action intended to manently break the connection between the Distribution System and the connectee s equipment, possibly including the removal of our equipment from the connectee s premises. A notice sent by a Supplier to us requesting the manent disconnection of the connection to a premise. The Distribution Code of the Distributors of England and Wales; the document produced by each Distributor in accordance with Condition 11 of its Licence and approved by Ofgem to define the technical aspects and planning criteria of the working relationship between the Distributor and all those connected to its Distribution System. Refers to the Electricity Distribution Licence. A model representing a theoretical 500MW extension to the Distribution System. The whole of our interconnected distribution equipment, including such items as; cables, overhead lines and substations, which we oate in accordance with our Licence. A generator with a direct connection to a Distributors Distribution System, rather than NGC s transmission system. The Electricity Distribution Licence granted to Central Networks pursuant to section 6(1) (c) of the Act. A point of connection at which a supply of electricity may flow between the Distribution System and the Customer's Installation or User's Installation or the Distribution System of another 051

Export Capacity Extra High Voltage or EHV Gas and Electricity Markets Authority (GEMA) (the Authority) Grid Supply Points (GSPs) High Voltage or HV Licence Low Voltage or LV Master Registration Agreement (MRA) Metering Point Ofgem Relevant Objectives Supply Number (also known as MPAN) SVA Use of System Charges son. Means the export of a supply of electricity into the Distribution System through the point of connection and is measured in kilo volt-ames. A voltage level at or higher than 22kV. As established by the Utilities Act. The points on our system where supply is taken from NGC. Usually at a 400/132kV, a 275/132kV or a 400/275/66kV substation. Means a voltage between 1000 volts and 22,000 volts. In the case of our Distribution System, this means 6,600 volts or 11000 volts plus or minus 6% measured between any two phase conductors. Refers to the Electricity Distribution Licence unless otherwise stated. 230 volts plus 10% or minus 6% measured between the neutral conductor and any phase conductor, or 400 volts plus 10% or minus 6% measured between any two phase conductors. Means the agreement of that name dated 1 June 1998, as at the Go-live Date. The point, determined according to the principles and guidance given at Schedule 9 of the Master Registration Agreement, at which a supply to (export) or from (import) a Distribution System: (a) is or is intended to be measured; or (b) where metering equipment has been removed, was or was intended to be measured; or (c) in the case of an Unmetered Supply under the Unmetered Supplies Procedure, is deemed to be measured. Where in each case such measurement is for the purposes of ascertaining the supplier s settlement liabilities under either the Settlement Agreement or the Balancing and Settlement Code. Ofgem is the Office of Gas and Electricity Markets, regulating gas and electricity industries in Great Britain. Ofgem oate under the governance of the Gas and Electricity Markets Authority (sometimes referred to as the Authority or GEMA) which sets all major decisions and policy priorities. As defined in paragraph 3 of condition 4 of the EDL and repeated in the general introduction to this statement. A unique identification number allocated to a connection of the Distribution System which allows for the accurate trading of energy by suppliers and the accurate billing of Use of System Charges. Supplier Volume Allocation. Charges made or levied, or to be made or levied, by the licensee for the provision of services as part of the distribution business 052

Use of System Charging Methodology Users to any son, as more fully described in standard condition 4 (Use of System Charging Methodology) and 4A (Charges for Use of System), but does not include connection charges. The principles on which and the methods by which, for the purposes of achieving the objectives referred to in paragraph 3 of standard condition 4 (Use of System Charging Methodology), Use of System Charges are determined. Persons entitled to apply for Use of System. 053