Smart Grid. activities and projects on the National Transmission System. Ettore ELIA. TERNA RETE ELETTRICA NAZIONALE S.p.A. Rome, October 11 th 2011

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1 Smart Grid activities and projects on the National Transmission System Ettore ELIA TERNA RETE ELETTRICA NAZIONALE S.p.A. Rome, October 11 th 2011

2 The National Power System Terna: Italian Transmission System 1 st independent operatorineuropeand7 th intheworld Primary owner of the National High Voltage Electricity Transmission Grid Terna is responsible for grid planning, development and maintenance as well for energy transmission and dispatching Over62.500kmofEHVandHVlines km underground cables, 917 km subsea cables, km operated to 380 kv Over 390 transforming and switching stations Transforming capacity 122 GVA n.18 interconnection lines with France(4), Switzerland(9), Austria(1), Slovenia(2), Greece(1), Corsica(1) 326TWhthe2010energydemand(+1,8%vs2009) MWthe2010maximumpowerdemand (16 th July2010) Direzione Operations Italia Investment Planning/Grid Planning 2

3 Trend of wind and photovoltaic from 2005 to 2011 (MW) Installed Capacity (MW) X * Eolico installato Fotovoltaico installato * WIND: provisional data of August 2011 PV: provisional data September 2011 Direzione Operations Italia Investment Planning/Grid Planning 3

4 Evolution of energy demand up to 2011 Energy demand scenario redefined by the 2009 crisis TWh % TWh 326 9,5 Industry Serivices Others % 09 North -14,8% +1,4% +1,0% 55% Center -10,6% +1,1% +1,8% 19% South, Islands -12,9% +1,3% -0,4% 26% % 09 48% 30% 22% 129 3,5 4,1 5,2 2,8 0,2 1,3 5,0 2,6 2,5 4,9 5,1 4,4 3,7 2,8 2,5 2,8 3,0 3,2 2,9 3,2 2,3 1,6 2,1 1,9 1,5 1,6 2,1 0,7 0,7 0,7 1,8 1,1-0,8-0,6-0,1-5, * Oil Shocks * provisional data 2011 Direzione Operations Italia Investment Planning/Grid Planning 4

5 Development of energy demand Provisional data (Jan-Aug 2011) During the first 8 months of the 2011, the Italy experienced an Electricity Demand increase of +1,1% than the previous year. -1,6% +2,7% +2,0% +1,4% Energy demand % 2010 vs 2011 Strong differences between areas: North West and Centre experienced demand reduction. -0,8% Energy demand has been supplied by 87% with national energy production (65% thermic, 15% hydro, 7% wind, geothermic and photov.) and by 13% with import +1,3% +3,0% +0,8% Direzione Operations Italia Investment Planning/Grid Planning 5

6 7th October 2011 Local network congestions Impact of RES generation on local 150 kv grid congestions Areaswithsurplus ofgeneration respect to local loads and existing SE 380/150 kv transmission lines capacity Constraints on RES (wind) generation: Local congestion relief network security conditions Minimum reserve margins specially in insular systems 500 GWH of not generated wind energy in 2010

7 7th October 2011 Low demand and high renewable generation Risks for lack of regulating capacity margins Primary Reserve Increasing of intermittent / fluctuating RES implies an equivalent reduction of generation available for primary reserve services Tertiary Reserve RES generation increases incertaintiy in real time balancing of load and generation Increasing of RES generation raises reserve needs and at the same time reduces reserve availability

8 7th October 2011 Effects of huge amount of RES generation on Dispatching Impact on Reserve and Balancing Resources PV generation Load Load PV Not predictable RES Minimum Thermal capacity necessary for security Minimum Import Import reduction Massive use of defense systems constraints on use of regulating plants Not dispathable generation D1 D2 D3 Risks of modulating RES generation to respect technical limits of power plants

9 Current installed capacity of hydro pumping power plants 64% North NORD MFTV CNORD 4% CNorth 21% CSouth CSUD FOGN 3% Sardinia SARDEGNA SUD BRNN 0% South ROSN 8% Sicily SICILIA PRGP 9

10 Renewable capacity future scenarios (mid and long term horizon) 14 Currently installed capacity , , ,007 Eolico MW MW ,520 Wind Photov MW Fotovoltaico MW , ,945 Expected on the Mid Term horizon 2,420 2, , Wind 2, Eolico MW MW 50 Photov. Fotovoltaico 40 1, MW , ,180 4, , , , ,910 1,270 In the long term (2021) installed capacity could be: MW Photovoltaic MW Wind Direzione Operations Italia Investment Planning/Grid Planning 10

11 Energy demand scenario (mid and long term horizon) TWh 330,5 Energy demand of Development scenario +1,6% 364,0 +1,9% 400,0 CAGR Energy demand of Base scenario +0,6% +0,8% 330,5 341,6 355, Direzione Operations Italia Investment Planning/Grid Planning 11

12 7th October 2011 Italian Transmission Network Development Plan 2011 Energy National Action Plan: 10y network investment for renewable energy Projects completed and in service 2010/11 SA.PE.I. 380 kv Ittiri-Codrongianos S/E 380/150 kv Bisaccia, Deliceto, Completati nel 2010 Maida,Troia others ~ 900 M Main projects in construction Sorgente-Rizziconi Benevento II - Foggia S/E 380/150 kv Spinazzola, Castellaneta, Montesano M., Rotello, Tuscania, Aliano, PST Foggia Development on existing S/E 380/150 kv (Scandale, Foggia, Galatina, Brindisi, Feroleto, ) S/E Villanova (PST) others > 600 M Main projets in permitting phase Montecorv.-Avellino N. Paternò-Priolo Foggia-Gissi others 1 At completion total cost 2 Connection projects of new power plant in permitting not included HVDC interconnection Sardinia-Continent Intervento per rinnovabile > 600 M Intervento per rinnovabile 380/150 Tuscania 380 kv Foggia- Benevento II 380 kv Deliceto-Bisaccia 380 kv Calabria-Basilicata-Campania Partinico-Fulgatore 380 kv ring of Sicily 380/150 kv Marcellana Adriatic backbone Laino-Altomonte 380/150 kv Feroleto (existing) 380/150 kv Larino (existing) 380/150 kv Rotello 380/150 kv S.Severo (existing) 380/150 kv Foggia (existing) 380/150 kv Spinazzola 380/150 kv Aliano 380 kv Sorgente-Rizziconi 380/150 kv Mineo Calabria Crossbone 380/150 kv Sorgente 2 380/150 kv P. del Colle (existing) 380/150 kv Brindisi S. (existing) 380/150 kv Galatina (existing) 380/150 kv Castellaneta 380/150 kv Scandale (existing) 380/150 kv Belcastro

13 Progress of main development projects Reinforcements Valcamonica-Valtellina Completed in 2010/2011 Under construction In authorization Reinforcements of Milan Area Trino Lacchiarella Reinforcements of Turin Area HVDC Grand Ile-Piossasco La Casella Caorso Colunga Calenzano S.Barbara Casellina Isola d Elba Continente S. Teresa Buddusò Ittiri-Codrongianos SACOI 3 SAPEI In service from decembrer2010 Udine Ovest Okroglo Redipuglia Udine Ovest Line across Veneto Reinforcements Verona (Bussolengo) Dolo Camin -Fusina Fano Teramo and S.E. Macerata HVDC Italia -Montenegro Villanova-Gissi Foggia Benevento Deliceto - Bisaccia Reinrforcements of Napoli Area Chiaramonte Gulfi - Ciminna Montecorvino Benevento Reinforcements Nord Calabria Feroleto-Maida Sorgente Rizziconi Paternò Priolo Direzione Operations Italia Investment Planning/Grid Planning 13

14 Entso-e system Transmission needs the highways perspective of a Supergrid

15 Smart grid Developments Smart Systems already in operation and furthers planned in the next years Prediction of RES generation Wide Area Monitoring Systems (WAMS) Automatic tripping devices and real-time configuration changes Adjustment of wind farms to Annex. A.17 NC Capacitors and reactors (>3.000 MVAr) for reactive power control PSTs to control active power flows HVDCto transport and control power flow from two nodes/poles Capacitors AT Reactors AAT PST HVDC Under study: Reactive power control by using equipments (SVC, STATCOM, ) for energy reactive flows optimization Dynamic rating on EHV South grid for real time managing of transport capacity Direzione Operations Italia Investment Planning/Grid Planning 15

16 Smart projects for full integration of RES Storage Systems Regulatory Framework DM 15 th December 2010 about the concession for the transmission and dispatching activity of electricity in Italy (art.7, letter k.): Terna can build and manage plants for energy storage and conversion into electricity in order to ensure the safety of the system and the proper functioning and maximum utilization of power from renewable sources and the supply of resources for dispatching services D.Lgs.3 rd March2011,n.28(ImplementationofDirective2009/28/EConthepromotionofenergyfromrenewable sources, and subsequent repeal of amending Directives 2001/77/EC and 2003/30/EC) in the art. 17, comma 3: in the developments projects planned by Terna can be included electrical energy storage systems designed to facilitate the dispatching of non-programmable sources. Inclusion of smart projects for Distributed Electricity Storage Devices in the National Grid Development Plan 16

17 Smart projects for full integration of RES Zonal and Distributed Electricity Storage Systems Advantages of storage systems: - network congestion reducing - additional reserve for the electrical system - providing of primary frequency/power control - providing of further resources for the balancing of power system - peak and consumption shaving Distributed Storage Systems (batteries) High energy density required Modular, flexible and removable structure Realization timing could be short Localization close to the RES connection nodes Zonal Storage Systems (pump storage) High dynamic performance (high ramps) Ready reserve guaranteed High capacity to store electrical energy Direzione Operations Italia Investment Planning/Grid Planning 17

18 Smart projects for full integration of RES Congestion management by Electricity Storage Distributed Systems Maximum Limit on the grid Prod. non programmabile Pot. immessa in rete Non-production WITHOUT STORAGE SYSTEMS High Capacity Installed Renevable CONNECTION NODE Rome, October 11 th 2011 Low transmission capacity of the grid National Electricity System Pot. immessa in rete Pot. immessa in rete (Storage) Accumulo (Storage) WITH STORAGE SYSTEMS Increasing of RES exploitation Direzione Operations Italia Investment Planning/Grid Planning 18

19 Smart RES generation in a Smart Electricity System Rules for integration of RES generation on electrical system Annex A17 for WIND Transmission Grid Code Annex A68 for PV (in consultation) Fast restoration of the injected power before the fault power plants have to maintain the grid connection in the following range of frequency and voltage: 85% Vn V 115% Vn 47,5 Hz f 51,5 Hz Power plants measurements must be provided to the TSO by connected users Power plants must provide services in case of emergency conditions PV must provide the down power regulation in over frequency condition Others The smart system concept should be applied also on generation embedded at medium and low voltage levels, in order to provide the best service to guarantee security and reliability margins Direzione Operations Italia Investment Planning/Grid Planning 19

20 Distributed Generation Real-time management of wind generation Error of wind production prediction Peak production on RTN (ex. Sicily) 27 % 22 % 55% 62% 18 % 34% maggio 2008 (22 nov 03:00) 2009 (24 ott 03:00) 2010 (5 nov 05:00) Necessary less measurements Higher production could be managed Direzione Operations Italia Investment Planning/Grid Planning 20