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Moscow, 19 September 2011

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  1. Maximizing production efficiency for existing and new power infrastructure:Enel experience in Russia and technologies Enrico VialeChief Executive Officer, Enel OGK-5 • Moscow, 19 September 2011

  2. Efficiency improvements in Russia: focus both on new construction and existing equipment (MW) • Major ways of efficiency improvements in Russia • Expected construction of substantial number of CCGTs (efficiency ~ 50-58%) • Still old gas and coal generation (efficiency ~ 30-40%) remain dominating with additional potential for improvement: • Modernization • Environmental improvements, especially for coal • Operational efficiency 177 175 158 Gas/oil CCGT Coal Hydro Nuclear Source:EOGK-5 company outlook

  3. Enel OGK-5 strategy for efficiency improvements Coal-fired power plants Gas – fired power plants • Konakovskaya GRES (2,5 GW): • Relatively new plant • Half capacity utilized due to competitive market and gas supply limitations Enel OGK-5 focus on efficiency • Construction of new CCGTs (Sredneuralskaya and Nevinnomysskaya PPs) • Modernization (Reftinskaya PP) • Environmental investments (Reftinskaya PP) • Operational improvements (all PPs) • ReftinskayaGRES (3,8 GW): • Important base load plant • Reliability issues • Substantial environmental impact • Sredneuralskaya GRES • (1,2 + 0,4 GW CCGT): • Oldest plant in the portfolio • Worn-out equipment • Good market position • Nevinnomysskaya GRES (1,3 + 0,4GW CCGT): • Relatively old plant • Good market position

  4. 1. Construction of new CCGTs: Sredneuralskaya Power Plant Initial situation: • Oldest plant in the portfolio – first unit commissioned in 1936 • Location – Sverdlovsk region, solid demand and good market position • Mandatory investment in CCGT supported by high capacity tariff from DPM scheme • New CCGT 410 MW: • Efficiency ~ 57% • NOx emissions: ≤ 50 mg/Nm3 • Commisioning: Q3 2011 • Cost ~380 mln EUR 4

  5. 1. Construction of new CCGTs: Nevinnomysskaya Power Plant Initial situation: • Relatively old plant– first unit commissioned in 1960 • Location – Stavropol region, good market position • Mandatory investment in CCGT supported by high capacity tariff from DPM scheme • New CCGT 410 MW: • Efficiency ~ 57% • NOx emissions: ≤ 50 mg/Nm3 • Commissioning: Q3 2011 • Cost ~ 400 mln EUR 5


  6. 2. Modernization: Reftinskaya Power Plant • Reconstruction and modernization of 5 units of 300 MW: • Investment rationale: • availability increase around 10% • Capacity increase by 8% (from 300 to 325 MW) • Specific heat consumption decrease of 15 g/kWh • Implementation: 2010 - 2021 years • Cost ~ 500-750 mln EUR Initial situation: • Largest coal power plant in Russia • Location - Sverdlovsk region, base load, high importance for Urals market, competitive fuel • Substantial problems for availability and environment RGRES unavailability, %

  7. 3. Environmental investments: Bag filters installation at Reftinskaya Power Plant • Replacement of electrostatic precipitators with bag filters: • First time in Russia • NOx emissions reduction by 30% • Ash emissions reduction of 98% • Implementation: 2010 - 2021 years • Cost included in the cost of modernization

  8. 3. Environmental investments: Dry Ash Removal System at Reftinskaya Power Plant Initial situation: • Serious pollution problems with current wet ash removal system • Substantial problems with ash storage as current ash lagoon capacity is almost exhausted • Construction of a Dry Ash Removal System • First time in Russia • Modern automated and environmentally friendly system for collection, transportation, storage and reutilization of ash • Implementation: 2010 – 2012 • Cost ~ 250 mln EUR

  9. 4. Constant improvement of operations contribute to overall efficiency improvements relevant for all PP • Project office to track existing and scan for additional initiatives • “Zenith” brand and quality program introduced for all efficiency improvements • Improvement ideas coming also from sharing “best practice” with other Enel assets Achieved improvements (2010 vs. 2008) Examples of measures implemented Heat rate reduction ~ 0,5% (1,4 gce/kWh)* • Ball cleaning system • More precise O2 meters • Energy saving lamps ~ 10% (20 m3/MWh)* Water consumption reduction • Water meters Increasing of availability ~ 5%* • Replacement of heating surfaces • SMED planning for planned outages * best result among all power plants

  10. 14 4. Enel introduced a “Zenith” brand for operational improvements worldwide • Become the benchmark in terms of operating excellence in the power and gas industry Maximum performance • In all geographies (Italia, Spain, Slovak Rep., Romania, Russia, …) • In all the divisions and staff functions In all the Group • Leveraging all possible levers (Margin, Opex, Capex, Working Capital) • Maximizing pre-tax cash flow generation Across all levers • Creating a top performance culture • Developing a group of people in charge to drive change • Fostering experience sharing, through dissemination of knowledge and of management best practices across the group Developing our people, skills and knowledge

  11. Future projects: Smart Grids Storage and Plug & Playtechnologies • Key technology effectively matching supply and demand • Already tested and/or launched in Europe by Enel • Russia – an important potential markets Multi-directional ‘flows’ management End user real time information and participation Electric Vehicles Central and distributed Intelligence Central and distributed resources integration LED Public Lighting Smart equipments and power electronics