COMPLIANCE REVIEW OF 2006/07 ASSET MANAGEMENT PLAN. Top Energy Limited

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1 PB ASSOCIATES COMPLIANCE REVIEW OF 2006/07 ASSET MANAGEMENT PLAN Prepared for PB Associates Quality System: Document Identifier : Top Energy Final Report Revision : 2 Report Status : Final Date Issued : 27 September 2007 Over a Century of Engineering Excellence Quality Management System Certified to ISO 9001: 2000

2 TABLE OF CONTENTS SECTIONS 1. REPORT OVERVIEW INTRODUCTION AMP SUMMARY BACKGROUND AND OBJECTIVES PURPOSE OF THE PLAN INTERACTION WITH CORPORATE GOALS, BUSINESS PLANNING PROCESSES AND PLANS PERIOD TO WHICH THE PLAN RELATES STAKEHOLDER INTERESTS ACCOUNTABILITIES AND RESPONSIBILITIES FOR ASSET MANAGEMENT ASSET MANAGEMENT SYSTEMS AND PROCESSES DETAILS OF ASSETS COVERED DESCRIPTION OF THE DISTRIBUTION AREA DESCRIPTION OF THE NETWORK CONFIGURATION DESCRIPTION OF THE NETWORK ASSETS JUSTIFICATION FOR ASSETS SERVICE LEVELS CONSUMER ORIENTED SERVICE TARGETS ASSET PERFORMANCE AND EFFICIENCY TARGETS JUSTIFICATION FOR TARGETS CAPITAL WORKS PLANNING PLANNING CRITERIA PRIORITISATION OF NETWORK DEVELOPMENTS DEMAND FORECASTS DISTRIBUTED GENERATION NON-NETWORK OPTIONS NETWORK DEVELOPMENT PLAN MAINTENANCE PLANNING MAINTENANCE PLANNING CRITERIA INSPECTION, CONDITION MONITORING AND ROUTINE MAINTENANCE ASSET RENEWAL AND REFURBISHMENT Top Energy Final.doc September 2007 i

3 9. RISK MANAGEMENT PERFORMANCE EVALUATION FINANCIAL AND PHYSICAL PROGRESS SERVICE LEVEL AND ASSET PERFORMANCE GAP ANALYSIS Top Energy Final.doc September 2007 ii

4 1. REPORT OVERVIEW The (Top Energy) Asset Management Plan (AMP) meets most of the requirements of the Electricity Information Disclosure Handbook. The Top Energy AMP is ranked in the first quartile 1 when compared with AMPs prepared by other Electricity Lines Businesses (ELBs). The main areas where the Top Energy AMP does not meet the specified requirements or does not meet the best practices described in the Electricity Information Disclosure Handbook are: The plan does not state that it has been approved by the directors of Top Energy. The plan should indicate that it has been approved by Top Energy s Board and the date of this approval. The AMP does not state how conflicts between the interests of stakeholders are managed. The AMP would be improved by providing some detail of how conflicting stakeholder interests are managed in the asset management process. The AMP does not contain sufficient detail of the process and criteria used by Top Energy to set the priority of network developments, particularly when there may be some constraints that limit the scope or timing of the project. Other areas where Top Energy could make improvements are: In the area of stakeholder interests, the plan should describe how the interests of all stakeholders are identified. In the description of asset data. The AMP would be improved by providing some more detail of the extent of data inaccuracy particularly the extent to which any data inaccuracy limits asset management functions such as forecasting, planning and maintenance. In the area of asset performance and efficiency targets the AMP would be improved if targets were set for all measures, not just for loss ratio. By fully describing the criteria used to determine the capacity of new equipment for different asset types or different parts of the network. In the area of asset management processes the plan would be improved by including a description of the process that flows from the identification of a defective asset. The AMP would be improved by providing a breakdown of planned and reactive maintenance by asset category. In the section on risk management, a summary of the five or ten top risks related to asset management would be useful. The Top Energy AMP is particularly good in the following areas: The plan contains comprehensive analysis and discussions on the nature of various asset classes and network components, identification of issues and descriptions of planned projects and programmes. 1 AMPs have been published by 28 ELBs. The first quartile consists of the 7 AMPs that are most compliant and the fourth quartile consists of the 7 AMPs that are least compliant Top Energy Final.doc September

5 The plan clearly recognises that asset data is inadequate in a number of areas. This recognition is supported by projects to improve asset data knowledge and processing. The AMP has clearly attempted to meet the requirements of the Electricity Information Disclosure Handbook. The Top Energy AMP is well presented and comprehensive. It provides the reader with a good understanding of the manner in which Top Energy are managing the assets, the issues faced and the actions being taken to improve the network Top Energy Final.doc September

6 2. INTRODUCTION In accordance with Requirement 24 of the Commerce Commission s (Commission) Electricity Information Disclosure Requirements (2004) (Requirements), large electricity lines businesses (ELBs) other than Transpower must within five months after the beginning of each financial year disclose a current asset management plan (AMP). The Requirements have been made under Sections 57T and 57U of the Commerce Act 1986 (Act). The need for the reliable and timely disclosure of the information in AMPs is reflected in the purpose statement in section 57T(1) of the Act, which states: The purpose of this subpart is to promote the efficient operation of markets directly related to electricity distribution and transmission services by ensuring that large line owners and large electricity distributors make publicly available reliable and timely information about the operation and behaviour of those businesses, so that a wide range of people are informed about such factors as profits, costs, asset values, price (including terms and conditions of supply), quality, security, and reliability of supply of those businesses. The Commission considers that: The AMP is the principal document that drives asset investment planning, which in turn drives such factors as profits, costs, asset values, price, quality, security and reliability of supply, about which the purpose statement requires the public to be informed 2. ELBs (other than Transpower) have been required to publicly disclose their AMPs for a number of years. The information that must be included in the disclosed AMP is given on Schedule 2 of the Requirements and is explained in more detail in the Commission s Electricity Information Disclosure Handbook (Handbook) 3. The 31 March 2006 edition of the Handbook amended these information requirements, and these amendments applied for the first time to the disclosed 2006/07 AMPs. PB Associates (PBA) has been retained by the Commission to review each disclosed 2006/07 AMP for compliance with the amended information requirements. This report presents the results of the review of the AMP disclosed by (Top Energy). ELBs are required to comply with Section 24 and Schedule 2 of the Requirements, which describe the information to be included in ELB asset management plans. The asset management plans must be prepared in accordance with the guidelines in Chapter 4 of the Handbook. Chapter 4 of the Handbook describes the provisions of Schedule 2 and provides ELBs with further guidance on the expected content of disclosed asset management plans, including an explanation of best practices in asset management planning. This report summarises compliance with both the provisions of the Requirements and the asset management best practices described in the Handbook. The report is intended to encourage ELBs to achieve best practice in their asset management plans rather than simply report on compliance with the provisions of the Requirements. The review undertaken was a desk top review and was limited to examining the information provided in the AMP and comparing it with the AMP content as specified in the Requirements and the Handbook. To perform the review we framed a series of questions based on the Handbook and assessed ELB compliance with each of the questions. In addition to noting those areas of the AMP where the specified information requirements are fully met, the report also identifies any areas where the information 2 Commerce Commission, Summary Report of Review of the Electricity Line Businesses 2005/06 Asset Management Plans 3 Commerce Commission, Electricity Information Disclosure Handbook 31 March 2004 (as amended 31 March 2006) Top Energy Final.doc September

7 provided is considered deficient and, where appropriate, makes suggestions for improvement. It should be noted that the scope of the review was limited to a compliance assessment and we were not required to audit or critically examine the quality of the information included in the AMP. However, where appropriate we have noted inconsistencies and areas where we considered that the information was inconsistent with the purpose statement provided in section 57T(1) of the Act. This report should not be considered an endorsement of any of the plans or strategies described in the AMP Top Energy Final.doc September

8 3. AMP SUMMARY Does the AMP include a summary that provides a brief overview of the AMP contents? The AMP includes a summary that provides an overview of the contents. How effectively does the summary highlight information that the ELB considers significant? Is this highlighted information relevant to stakeholders and in particular to distribution system users? The summary highlights information that Top Energy considers to be significant. This includes information such as the scope of the plan (which does not include other businesses in the Top Energy Group. Information relevant to stakeholders is also provided in the summary. This includes information such as the historic and forecast reliability measures and the planned level of capital and maintenance expenditure. Is there any information in the AMP that is of particular importance or relevance to customers that is not highlighted in the summary? The summary contains all the information that is of particularly importance and relevant to customers. Top Energy might consider including some specific information on proposed projects or programs. For example, the summary could mention the project to replace the circuit breakers at Waipapa zone substation and the project to improve the data related to assets Top Energy Final.doc September

9 4. BACKGROUND AND OBJECTIVES 4.1 PURPOSE OF THE PLAN Does the AMP contain a purpose statement? The AMP does contain a clear and appropriate purpose statement. Does the purpose statement make the status of the AMP clear? For some businesses the AMP will be the key document that guides the asset management process. Other businesses will have a different asset management system in place and will write the disclosed AMP purely to meet the disclosure requirements. The status of the AMP is outlined in the purpose statement. The purpose of the AMP is to describe how Top Energy will manage the assets for the benefit of owners and consumers. The plan will also ensure that Top Energy complies with statutory requirements. The Top Energy AMP is quite descriptive and is written in a manner that fully describes the relevant sections using language that could be understood by an educated consumer. Does the purpose statement also include the objectives of the ELB s asset management and planning process? To what extent are these objectives consistent with the ELB s vision and mission statements? Do the objectives show a clear recognition of stakeholder interest? The introduction to the plan includes the objective of Top Energy s asset management and planning process. The introduction also includes some detail of the statement of corporate intent. The objective clearly recognises stakeholder interests. For example one of the objectives of the plan is to ensure that asset strategies reflect the voices of stakeholders, customers and the market place. Top Energy is owned by a trust that exists for the benefit of consumers. It is therefore likely to be a high degree of correlation between the shareholder and consumer interests as these two groups are largely the same people. 4.2 INTERACTION WITH CORPORATE GOALS, BUSINESS PLANNING PROCESSES AND PLANS Does the AMP state the ELB s high level corporate mission or vision as it relates to asset management? Top Energy Final.doc September

10 The AMP does state Top Energy s high-level objective and relate this to asset management. Does the AMP identify the documented plans produced as outputs of the ELB s annual business planning process? The AMP states that Top Energy produce short and long term business plans. Each of these plans is submitted to the board for approval. Does the AMP show how the different documented plans relate to one another with particular reference to any plans specifically dealing with asset management? The AMP describes the process that top energy use to produce the short and long term business plans and how these relate to asset management activities. How well are the objectives of the ELB s asset management and planning processes integrated with its other business plan and goals and how well does the AMP describe this relationship? Top Energy s asset management and planning processes are well integrated. The integration is demonstrated in diagrammatic form in section 1.4 of the AMP. 4.3 PERIOD TO WHICH THE PLAN RELATES Does the AMP specifically state the period covered by the plan? The AMP does state it covers the ten-year period from 1 April 2006 until 31 March Does the AMP state the date on which the AMP was approved by the Board of Directors? Not compliant The AMP does not state that it has been approved by the directors of Top Energy. The plan does refer to authorisation that derives from approval of the annual budget by the Board but it is not clear whether the AMP is presented to the directors. 4.4 STAKEHOLDER INTERESTS Does the AMP identify the ELB s important stakeholders and indicate: The AMP identifies and groups the stakeholders into two group namely external and internal stakeholders Top Energy Final.doc September

11 how the interests of stakeholders are identified; Partially compliant The AMP does describe how the interests of electricity consumers are identified but it does not describe how the interests of all the stakeholders are identified. what these interests are; The plan contains a discussion on Top Energy s interaction with the various stakeholder groups. Included in this discussion is the interest of stakeholders. how these interests are accommodated in the ELB s asset management practices: The AMP states that stakeholder interests are achieved through the application of business management and risk management processes. and how conflicting interests are managed? Not compliant The AMP does not state how conflicts between the interests of stakeholders are managed. However, we note that there is a high degree of correlation between the shareholder and consumer interests as these two groups are largely the same people. The AMP would be improved by providing some detail of how conflicting stakeholder interests are managed in the asset management process. 4.5 ACCOUNTABILITIES AND RESPONSIBILITIES FOR ASSET MANAGEMENT At the governance level, does the AMP describe the extent of Board approval required for key asset management plans and decisions and the extent to which asset management outcomes are regularly reported to the Board? The AMP describes the asset management process and the timing and extent of board approval. Asset management outcomes are presented to the board on a monthly, sixmonthly and annual cycle. At the executive level does the AMP provide an indication of how the in-house asset management and planning organisation is structured? The AMP does describe the executive level structure that identifies the managers responsible for asset management. The AMP contains a figure showing the organisation structure which details the managers responsible for various asset management functions Top Energy Final.doc September

12 At the field operations level does the AMP comment on how field operations are managed, the extent to which field work is undertaken in-house and the areas where outsourced contractors are used? The AMP does describe how field operations are managed. With the exception of specialist services all construction and maintenance work is undertaken by a contracting group. The contracting group is a division of Top Energy. 4.6 ASSET MANAGEMENT SYSTEMS AND PROCESSES Does the AMP identify the key systems used to hold data used in the asset management process? Does it describe the nature of the data held in each system and what this data is used for? The AMP identifies the key systems used to hold data used in the asset management process. The AMP does describe the use of each of these systems. The information provided includes details of the financial and revenue systems along with other systems directly used to manage assets such as the Geographical Information System (GIS). Does the AMP comment on the completeness or accuracy of the asset data and does it identify any specific areas where the data is incomplete or inaccurate? Partially compliant The AMP identifies a number of areas where additional asset data is being collected. To some extent, this provides some commentary on the accuracy of asset data. For example it is stated that the LV network is not fully captured in the rural areas. The AMP would be improved by providing some more detail of the extent of data inaccuracy, particularly the extent to which any data inaccuracy limits asset management function such as forecasting, planning and maintenance. If there is a problem with data accuracy or completeness, does the AMP disclose initiatives to improve the quality of the data? The plan describes a number of initiatives to improve the quality of data. Initiatives include the implementation of additional systems and further collection of asset data. Does the AMP describe the processes used within the business for: managing routine asset inspections and network maintenance; planning and implementation of network development processes; and measuring network performance (SAIDI, SAIFI) for disclosure purposes? Partially compliant The AMP does describe part of the processes used within the business for managing routine asset inspections and network maintenance, planning and implementation of network development processes. These processes, along with the process used to Top Energy Final.doc September

13 measure network performance for disclosure purposes are displayed in a systems diagram 4. The plan contains descriptions of the processes used to collect data but would be improved by providing some explanation of the process used to initiate maintenance and construction work. The process for logging and reporting fault information associated with network performance could also be described. 4 An information flow diagram for existing and planned future information can be found on pages 128 and 129 of the AMP Top Energy Final.doc September

14 5. DETAILS OF ASSETS COVERED 5.1 DESCRIPTION OF THE DISTRIBUTION AREA Does the high level description of the distribution area include: the distribution areas covered; The AMP contains two maps that show the distribution area. On the southern boundary Top Energy feeders appear to be located up to and possibly across the border of the adjoining ELB. It is not clear to what extent interconnection exist between the Top Energy network and the adjoining ELB. It would be worthwhile describing the southern border of the Top Energy network in further detail, particularly the extent of any electrical interconnection with other ELBs. identification of large consumers that have a significant impact on network operations or asset management priorities; Top Energy identifies four large consumers within the network area. These include a timber mill, a meat works and a prison. description of the load characteristics for different parts of the network; and The AMP contains information that describes the load at each of the zone substations and provides demand forecasts for the two GXP s. the peak demand and total electricity delivered in the previous year, broken down by geographically non-contiguous network, if any? The AMP contains a number of charts that provide existing and forecast peak demand for each zone substation and for each GXP. 5.2 DESCRIPTION OF THE NETWORK CONFIGURATION Does the AMP include a description of the network configuration which includes: identification of the bulk electricity supply points and any embedded generation with a capacity greater than 1 MW; Top Energy Final.doc September

15 The AMP describes the GXP connections at Kaitaia and Kaikohe. The plan also contains a detailed description of the Ngawha power station that is capable of generating 11 MVA. the existing firm supply capacity and current peak load at each bulk supply point; The plan provides a detailed description of the grid connection points and describes their capacity along with the items of plant that constrain supply. a description of the sub-transmission system fed from the bulk supply points, including identification and capacity of zone substations and the voltage of the sub-transmission network; The AMP contains a description of the sub-transmission network. This description includes details of the 33 kv sub-transmission system that radiates from each of the grid connection points and details of the zone substation. The AMP discusses in some detail zone substation and GXP configuration and demand but only contains a full description of the capacity of the sub-transmission lines in Appendix D. Top Energy might consider including a short description of the subtransmission line network, including the capacity of the network, in the section that details the demand forecast (section 3.2). the extent to which individual zone substations have n-x sub-transmission security; The extent of (n-1) security for each of the zone substations is disclosed in the plan. We note that Top Energy has a four-level target for security at zone substations. Two of the ten substations do not meet the target level for security in a description of the distribution system including the extent to which it is underground; The plan contains a description of the distribution system. The extent of underground is stated in the section relating to levels of service and can also be extracted from the table that show the length of overhead lines and underground cables. Top Energy might consider expanding the asset description in section 1.5 to provide details of the construction of the various network voltages and to include the extent of overhead and underground distribution. a brief description of the network s distribution substation arrangements; The AMP contains a description of the distribution substations. This description would be enhanced by providing the volume of distribution substations by capacity as well as by age Top Energy Final.doc September

16 a description of the low voltage network, including the extent to which it is underground; and The low voltage network is described in the plan. an overview of secondary assets such as ripple injection systems, SCADA and telecommunications systems? The AMP contains an overview of secondary systems including SCADA and communications systems. 5.3 DESCRIPTION OF THE NETWORK ASSETS Does the AMP include a description of the assets that make up the distribution system that includes, for each asset category: voltage levels; description and quantity of assets; age profiles; value of the assets in each category (which can be drawn from the ODV disclosure or other record bases kept by the ELB; and a discussion of the condition of the assets, further broken down as appropriate and including, if necessary, a discussion of systemic issues leading to premature asset replacement? The AMP includes a description of the assets primarily in the Renewal & Maintenance section. The description includes the quantity and volume of assets at each voltage level for all assets. Age profiles are by providing the number of assets in an age range and additionally, for the major classes of assets, this information is supplemented by charts. The AMP includes the asset values of each of the asset categories taken from the last audited ODV in The discussion in the Renewal & Maintenance section describes the condition of each of the asset categories and identifies a number of systemic issues. For example, a systemic issue relating to English Electric OKW3 sub-transmission circuit breakers is highlighted. 5.4 JUSTIFICATION FOR ASSETS How does the ELB justify its asset base? Comment briefly whether the AMP includes any asset justification and the nature and reasonableness of the justification provided Top Energy Final.doc September

17 The AMP contains an Appendix (Appendix D) that provides details the assets and the extent of optimisation that has occurred in each asset class. This discussion is quite detailed and provides reasons for the level of assets included in the ODV valuation along with reasons why some assets have been optimised Top Energy Final.doc September

18 6. SERVICE LEVELS 6.1 CONSUMER ORIENTED SERVICE TARGETS What consumer performance targets are included in the AMP? Are the targets objectively measurable, adequately defined and is the ELB proposing to improve the level of service over the period of the plan? To what extent are the targets consistent with the other plans set out in the AMP? The primary consumer oriented performance targets are SAIDI and SAIFI. These traditional electricity network performance measures are objectively measurable. Top Energy intends to make modest improvements in SAIDI between 2007 and These targets appear reasonably consistent with other plans in the AMP. The AMP is a little confusing concerning targets as the charts show a Government Threshold rather than the target. In the case of SAIDI, there is a significant difference between these two measures with the Government Threshold set at 465 minutes and the Top Energy target for 2007 set at 320 to 370 minutes. We note that Top Energy does not appear to have exceeded (bettered) the target level in the past four years and this raises the question whether the target is reasonably achievable 5. The AMP could also be improved by clearly stating that the target for 2007 includes planned and unplanned outages as well as the impact of outages on the transmission system. Other consumer performance measures included in the AMP are the number of customers without power for defined periods. These measures are objectively measurable. We cannot determine whether these targets are consistent with other asset management plans as no context, such as historical performance, is provided. 6.2 ASSET PERFORMANCE AND EFFICIENCY TARGETS What asset performance and efficiency targets are included in the AMP? Are the targets objectively measurable, adequately defined and is the ELB proposing to improve the level of service over the period of the plan? To what extent are the targets consistent with the other plans set out in the AMP? Partially compliant The AMP contains the following measures of asset performance and efficiency: Direct and indirect costs per km of line Loss ratio Load factor Capacity utilisation 5 We note that the log trend line shown does support a target in the range 320 to 370 minutes but the trend line might take another shape if 1999 was removed from the data Top Energy Final.doc September

19 Historical performance for these measures is included in the plan but targets are only set for loss ratio. The target for loss ratio is for a modest improvement (reduction) in losses and this target is consistent with plans set out in the AMP. We note also that Top Energy includes health and safety performance and targets in the AMP. We consider this to be entirely appropriate as the staff are a major stakeholder group and asset management systems and procedures should contribute to their wellbeing. 6.3 JUSTIFICATION FOR TARGETS Does the AMP include the basis on which each performance indicator was determined? Top Energy has surveyed customers to determine their preference for network reliability. This has provided the basis for the SAIDI and SAIFI targets. The target for loss ratio is discussed and reasons for the target are given Top Energy Final.doc September

20 7. CAPITAL WORKS PLANNING 7.1 PLANNING CRITERIA Does the AMP describe the planning criteria used for network developments? The planning criteria are detailed in section 1.7 of the AMP. The plan mentions that Top Energy is moving towards a probabilistic approach to planning. Does the AMP describe the criteria for determining the capacity of new equipment for different asset types or different parts of the network? Partially compliant The AMP does describe the standard used for zone substation transformers but does not describe the criteria for determining the capacity of other new equipment for different asset types or different parts of the network? 7.2 PRIORITISATION OF NETWORK DEVELOPMENTS Does the AMP describe the process and criteria for prioritising network developments? Not compliant The AMP does not contain details of the process and criteria for prioritising network developments. There is discussion in the AMP of nature of the AMP i.e. a planning document. This discussion goes on to state that projects will proceed based on actual changes to load and other factors. However, the discussion does not state which projects will be given priority when there is some conflict between projects. 7.3 DEMAND FORECASTS Does the AMP describe the load forecasting methodology, including all the factors used in preparing the estimates? The AMP has a good description of the load forecasting methodology and the factors that are considered in preparing load forecasts. Two models are used to forecast load. Load forecasting is carried out at a feeder level. Are load forecasts broken down to at least the zone substation level and do they cover the whole of the planning period? Load forecasts are provided for each zone substation and for each feeder on the network. The forecast covers the whole planning period Top Energy Final.doc September

21 Is there any discussion of the impact of uncertain but substantial individual projects or developments? Is the extent to which these uncertain load developments are included in the forecast clear? The AMP identifies a number of factors that are taken into consideration during development of the load forecasts. This includes uncertain developments such as subdivisions and industrial growth. Does the load forecast take into account the impact of any embedded generation or anticipated levels of distributed generation within the network? Load forecasts do take account of embedded generation. Top Energy own a significant embedded generator and this is clearly taken into account in load forecasting. Does the load forecast take into account the impact of any demand management initiatives? Top Energy s approach to demand management initiatives is clearly described. The discussion considers both hot water load control and demand management by the three largest customers. Does the AMP identify anticipated network or equipment constraints due to forecast load growth during the planning period? The plan identifies anticipated network and equipment constraints due to forecast load growth. There is significant discussion of the impact of forecast growth on the five zone substations that are likely to be constrained over the planning period. 7.4 DISTRIBUTED GENERATION Does the AMP describe the policies of the ELB in relation to the connection of distributed generation? The AMP does provide relevant information in relation to the connection of distributed generation. At the time of writing the AMP, Top Energy were in the process of releasing their own distributed generation connection policy. These policies are now available on the Top Energy web site. Does the AMP discuss the impact of distributed generation on the ELB s network development plans? The AMP does describe the impact of distributed generation. The Ngawha generator, owned by Top Energy, has a significant impact on the network and there are Top Energy Final.doc September

22 investigations underway to expand the capacity of the generator. An expansion of the Ngawha generator will have additional impact on the network. 7.5 NON-NETWORK OPTIONS Does the AMP discuss the manner in which the ELB seeks to identify and pursue economically feasible and practical alternatives to conventional network augmentation in addressing network constraints? The AMP does discuss the manner in which Top Energy identifies and pursues economically feasible and practical alternatives to conventional network augmentation. Top Energy encourages third parties to provide embedded generation alternatives. Does the AMP discuss the potential for distributed generation or other non-network solutions to address identified network problems or constraints? One of the constraints identified in the plan in the Kaitaia GXP. There are proposals to establish new wind farms in the area to relieve the constraint. Top Energy is currently considering the options for both network augmentation and distributed generation to relieve this constraint. 7.6 NETWORK DEVELOPMENT PLAN Does the AMP include an analysis of the network development options available and details of the decisions made to satisfy and meet target levels of service? The AMP includes a discussion on issues, such as security, and identifies options to improve security and therefore meet target levels of service. Does the AMP include : a detailed description of the projects currently underway or planned to start in the next twelve months; The AMP contains a detailed description of the projects currently underway or planned to start in the next twelve months. a summary description of the projects planned for the next four years; and The AMP contains a detailed description of the projects planned to start in the period 2008 to Top Energy Final.doc September

23 a high level description of the projects being considered for the remainder of the planning period? The AMP contains a description of the projects planned to start in the period 2012 to Does the AMP discuss the reasons for choosing the selected option for those major network development projects for which decisions have been made? The AMP contains a comprehensive discussion on each zone substation, the constraints associated with the zone substations, and options for relieving constraints. For other projects that are planned to start in the next five years does the AMP discuss alternative options, including the potential for non-network alternatives to be more cost effective than network augmentations? For projects planned to start in the next five years the AMP contains a discussion on alternative options, including non-network alternatives. For example, to relieve a constraint on the Taipa zone substation, Top Energy investigated the alternative of providing local generation. Does the AMP include a capital expenditure budget, broken down sufficiently to allow an understanding of expenditure on all main types of development projects? The AMP does include a capital expenditure forecast broken into categories that reflect the reason for undertaking the expenditure. The budget is provided in each section of the plan and is broken down to an appropriate level that enables the reader to understand the level of expenditure on the various asset categories Top Energy Final.doc September

24 8. MAINTENANCE PLANNING 8.1 MAINTENANCE PLANNING CRITERIA Does the AMP include a description of the ELB s maintenance planning criteria and assumptions? The AMP does include a description of the maintenance planning criteria and assumptions for each class of asset. 8.2 INSPECTION, CONDITION MONITORING AND ROUTINE MAINTENANCE Does the AMP provide a description of its planned inspection, testing and condition monitoring practices, the different asset categories, and the intervals with which these are carried out? The AMP provides a description of planned inspection, testing and condition monitoring practices of each of the main asset categories which includes the intervals with which they are carried out. The Top Energy AMP contains a very comprehensive discussion of the maintenance strategy and risks of each of the main asset classes. This includes a full description of the monitoring practices and, where asset condition is not known, the action being taken to collect data. Does the AMP describe the process by which defects identified by its inspection and condition monitoring programme are rectified? Partially compliant The AMP contains a diagram 6 that provides some detail of the processes used in maintaining the assets. Additionally there is some description, in the discussion of the renewal and maintenance of each of the asset classes, that describes some actions that will be taken when assets are found to be in specific conditions. The AMP would be improved by including a description of the process that flows from the identification of a defective asset. Does the AMP highlight systemic problems for particular asset types and the actions being taken to address these? Where systemic problems exist these are identified in the relevant asset categories and details of actions, or planned actions, to correct the problems are disclosed. 6 Information flow diagram, page Top Energy Final.doc September

25 Does the AMP provide budgets for routine maintenance activities, broken down by asset category, for the whole planning period? Partially compliant The AMP provides a budget for each asset category for refurbishment and a total all asset categories for planned and reactive maintenance. All budget information is presented for the full ten years covered by the plan. The AMP would be improved by providing a breakdown of planned and reactive maintenance by asset category. The AMP includes details of the approach taken to manage vegetation and includes forecast expenditure for each year of the plan. 8.3 ASSET RENEWAL AND REFURBISHMENT Does the AMP provide a description of the ELB s asset renewal and refurbishment policies, including the basis on which refurbishment or renewal decisions are made? In the discussion on each asset class Top Energy provides a description of the asset renewal and refurbishment program. For some asset classes, such as distribution transformers, this includes a detailed description of the basis for renewal or refurbishment. Does the AMP discuss the planned asset renewal and refurbishment programmes for each asset category including: The AMP does discuss the planned asset renewal and refurbishment programmes for each asset category. a detailed description of the projects currently underway and planned for the next twelve months; For each asset category, there is a description of the projects planned for year 2006/07. The AMP could be improved by including a table or summary of the larger projects and/or programmes planned for the current year. a summary description of the projects planned for the next four years; and The AMP contains a brief description of each of the projects planned for the period 2007/08 to 2010/11 for each asset category. a high level description of the other work being considered for the remainder of the planning period? Top Energy Final.doc September

26 For each asset category, there is a description of the projects planned for the period 2011/12 to 2015/16. Does the AMP include a budget for renewal and refurbishments, broken down by major asset category, and covering the whole of the planning period? The AMP does contain a budget for renewal and refurbishment that covers the whole of the planning period. The discussion of each asset category includes the budget for renewal and refurbishment Top Energy Final.doc September

27 9. RISK MANAGEMENT Does the AMP include details of the ELB s risks policies and assessment and mitigation practices including: The AMP contains a section on risk management. This includes details of Top Energy s risk management policy, risk management process and risk assessment technique. methods, details and conclusions of risk analysis; The plan provides details of the risk management method, details and conclusions of risk analysis. the main risks identified; Partially compliant The AMP contains a sample page of the risk register that provides details of some of the risks. The plan would be improved by the inclusion of a consolidated list of the top five or ten risks that affect asset management. details of emergency response and contingency plans? Details of plans prepared to cover emergency situations and other contingency plans are included in the AMP. Does the AMP identify specific development projects or maintenance programmes with the objective of managing risk? Are these projects discussed and linked back to the development plan or maintenance programmes? The plan provides the example of a mobile substation that was purchased as the result of risk assessment. In future AMP s, Top Energy might include details of projects or programmes that are being undertaken to reduce risk in specific areas Top Energy Final.doc September

28 10. PERFORMANCE EVALUATION 10.1 FINANCIAL AND PHYSICAL PROGRESS Is the actual capital expenditure for the previous year compared with that presented in the previous AMP and are significant differences discussed? Capital expenditure for the previous year is compared with expenditure presented in the previous AMP. Actual expenditure was approximately 10% less than budget and a brief explanation was provided. Is the progress of development projects against plan (as presented in the previous AMP) assessed and are the reasons for substantial variances highlighted? Are any construction or other problems experienced discussed? Progress of development projects is reported at a detailed level. Discussion of the progress of each proposed project is included. Is the actual maintenance expenditure compared with that planned in the previous AMP and the reasons for significant differences discussed? Maintenance expenditure for the previous year is compared with expenditure presented in the previous AMP. Actual expenditure was approximately 30% less than budget and a reason provided. The reason given was a budgeting error. Is progress and maintenance initiatives and programmes assessed and discussed and is the effectiveness of these programmes noted? The AMP does discuss the progress of maintenance plans and renewal projects. The plan contains discussion of the outcome of these programmes and refers to changed plans that have resulted from the outcome of planned maintenance tests SERVICE LEVEL AND ASSET PERFORMANCE Is the measured service level and asset performance for the previous year presented for all the targets discussed under the Service Levels section of the AMP? Service level performance for the previous year is discussed in Levels of Service section of the AMP. Historical performance over a number of years is shown for each of the key measures Top Energy Final.doc September

29 Is there a comparison between actual and target performance for the preceding year with an explanation for any significant variances? The AMP contains a comparison between actual and target performance for the preceding year with an explanation of variances. Top Energy s network performance was significantly influenced by the impact of two severe weather events in 2005/ GAP ANALYSIS Does the AMP identify significant gaps between targeted and actual performance. If so, does it describe the action to be taken to address the situation (if not caused by one-off factors)? The AMP identifies a gap between actual and target SAIDI and SAIFI. There is an explanation of the reasons for the gap and action to be taken to address the situation. Does the AMP review the overall quality of asset management and planning within the ELB and discuss any initiatives for improvement? The plan includes some discussion of the limitations of current asset management and planning and describes a number of initiatives that are or will be undertaken to improve aspects of asset management and planning Top Energy Final.doc September

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