1. Wind Development Strategies: environmental acceptance and critical aspects Luigi La Pegna Head of Projects – Renewable Energies Business Unit luigi.lapegna@enel.it EWEC 2007 – Milan, 2007 May 9th

2. Use: public May 9th, 2007 2 EWEC 2007 – Luigi La Pegna Summary Overview on Enel’s Renewables Wind Investment Strategies and Targets Wind Environmental acceptance and critical aspects

3. Use: public May 9th, 2007 3 EWEC 2007 – Luigi La Pegna A brief overview of Enel Enel aims to be the most efficient, market driven, quality focused provider of power and gas, creating value for customers, shareholders and people *as of 28 th March 2007 **21,4% directly and 10,2% indirectly through state-run lender Cassa Depositi e Prestiti Enel is the third * largest listed utility in Europe with a market capitalisation of EUR 50 billion. The Italian Economy Ministry owns 31.6 % ** of the company, leaving a free-float of some 70%, with 2.3 million shareholders. Its 58.548 employees work in 16 countries, producing and distributing power and gas in Europe, North & Latin America. Thanks to the strong commitment to Corporate Social Respon- sibility, Enel has been included in the world’s most selective ethical indexes, such as the Dow Jones Sustainability Index.

4. Use: public May 9th, 2007 4 EWEC 2007 – Luigi La Pegna European players 2006 Generation capacity (GW)Customers (mn)EBITDA (€bn) 1.FY_05 2.Include Energy Only Source: company reports. Data refer to 2006 unless otherwise stated. (1) 1 (2) (1) (1) ()2 One of the leading players in Europe

5. Use: public May 9th, 2007 5 EWEC 2007 – Luigi La Pegna Worldwide renewables portfolio Canada 22 MW Hydro, biomass USA 380 MW Hydro, wind Guatemala 69 MW - Hydro Costa Rica 55 MW - Hydro, wind Chile 100 MW - Hydro Italy 15,358 MW Hydro, geothermal, wind, solar Spain 900 MW Hydro, wind, cogeneration Slovakia 2.329 MW Hydro Brazil 97 MW - Hydro Panama 300 MW - Hydro 20.000 MW worldwide, 600 MW wind farms

6. Use: public May 9th, 2007 6 EWEC 2007 – Luigi La Pegna Enel Wind Farms in Italy ALTANURRA 12.3 MW MONTEARCI 10.9 MW COLLARMELE 9 MW CAMPOLIETO I e II 5.6 MW ACQUASPRUZZA 2.45 MW SERRA CORTINA 2.6 MW CARLENTINI 7.3 MW SERRA MARROCCO 46.7 MW CONTRADA CORVO-COZZO MITURRO 38.3 MW CALTABELLOTTA 7.5 MW SCLAFANI BAGNI I e II 15.8 MW TULA 23.8 MW MONTE ZIMMARA 27,2 MW COZZO VALLEFONDI 10,2 MW LITTIGHEDDU 27+27 MW MONTARONE I 4.3 MW 20 wind farms, 309 MW Domestic Generation & Energy Management

7. Use: public May 9th, 2007 7 EWEC 2007 – Luigi La Pegna Kyoto objectives and RES directive 20 (*) 9,2 In operation In project Wind 11,4 TWh Biomass 2,2 TWh Hydro 1,4TWh 15,0 24,6 (**) New producibility for Green Certificates (*) additional to reach Directive UE 01/77 for 75 TWh (**) GSE: plants qualified at 30/06/2006; includes also revamping Renewables development in Italy Domestic Generation & Energy Management

8. Use: public May 9th, 2007 8 EWEC 2007 – Luigi La Pegna Enel’s Production Mix Domestic Generation & Energy Management (1)Environmental impact Assessment <1%

9. Use: public May 9th, 2007 9 EWEC 2007 – Luigi La Pegna Environment and innovation An ambitious plan built on material projects 1,500 MW in wind 100 MW in hydro 100 MW in geo 1,500 MW in wind 100 MW in hydro 100 MW in geo Growth in renewables Innovation projects Innovative solution for renewable energy Energy efficiency and distributed generation Toward “zero emissions” and the hydrogen frontier Innovative solution for renewable energy Energy efficiency and distributed generation Toward “zero emissions” and the hydrogen frontier € 3.3 bn € 0.8 bn Growth in renewables – Italy and International

10. Use: public May 9th, 2007 10 EWEC 2007 – Luigi La Pegna Growth in renewables Investments (€bn) 2003-20062007-2011 Delivering Enel ’ s strategy in renewables 13 plants started up in 2006 44 MW additional renewable capacity achieved in 2006 400 MW of additional domestic capacity in 2007-2011 ITALY - Domestic Generation & Energy Management

11. Use: public May 9th, 2007 11 EWEC 2007 – Luigi La Pegna Off Shore Wind Farms ITALY - Domestic Generation & Energy Management Present situation: rapid development of technology in Northern Seas and no installation in Mediterranean Sea Off-shore wind farm in Italy defined as part of Enel Business Plan Design and execution plan started in 2005 and undergoing. Site definition within 2007, environmental studies and authorization within 2009. Realization of 1 or 2 off-shore wind farms in Italy (50 to 200MW) within 2011

12. Use: public May 9th, 2007 12 EWEC 2007 – Luigi La Pegna Critical to wind development Public opinion opposition 12 december 2006, four different Italian regions

13. Use: public May 9th, 2007 13 EWEC 2007 – Luigi La Pegna Critical to wind development Bureaucracy 11 stamps !! Authorization 16 months from presentation (dec 04 – may 06) Replacement of 8 old WTGs (not working) with new WTGs. Same number, same dimensions, same power

14. Use: public May 9th, 2007 14 EWEC 2007 – Luigi La Pegna Installed capacity at 2006 (MW) Wind Energy percentage on national consumption Forecast installed capacity at 2010 Wind Energy percentage on national consumption Germany20.6618%45.00018% Spain11.6157%25.00016% Denmark3.12216%4.00019% Italy2.1231%7.100 (?)4% European Union40.8903%80.0005% Wind installation in Europe New installations 2006 Germany2,233 MW+ 12% Spain1,587 MW+ 16 % Denmark 22 MW- Italy 421 MW+ 24%

15. Use: public May 9th, 2007 15 EWEC 2007 – Luigi La Pegna As commonly reported Visual impact Noise Impacts on birds and wildlife Electromagnetic pollution Critical to wind development Main items Mainly prejudices, few real criticalities

16. Use: public May 9th, 2007 16 EWEC 2007 – Luigi La Pegna Visual impact: the past

17. Use: public May 9th, 2007 17 EWEC 2007 – Luigi La Pegna Tula wind farm (Sardinia) “Sa Turrina Manna” Visual impact Enel project advise in lay-out definition Avoid “forest” effect Underground paths for power cables Accurate definition of plant internal roads and finitures through condivision with local population Specific attention to maintenance of wind farms through operational period

18. Use: public May 9th, 2007 18 EWEC 2007 – Luigi La Pegna Spring Wind Farm Sclafani Bagni (Sicily) “Incatena Cugno” Fall Advanced WTGs design and study of colours effect in different seasons WTGs transformer internal at supporting tower Visual impact Colours

19. Use: public May 9th, 2007 19 EWEC 2007 – Luigi La Pegna Accurate study to minimize impact and reduce service infrastructures at minimum essential Fast and efficient restoring of ‘ante operam’ conditions after erection and in final plant dismountling phase. Visual impact Transportation and erection

20. Use: public May 9th, 2007 20 EWEC 2007 – Luigi La Pegna U.S. Desert Utah California Sardinia, Enel Plant

21. Use: public May 9th, 2007 21 EWEC 2007 – Luigi La Pegna