1. Institutional March, 2010

2. % 7 million clients 6 thousand AES People AES Brasil Group 85.4% 14.6% Others AES Brasil 97.0% 3.0% Discos Gencos Market Share ... with a 2009 result : R$ 3.2 billion (Ebitda) R$ 1.9 billion (net income) Investments 1998-2009: R$ 5.8 billion after privatization Disco Trading Co. Telecom Genco

3. Shareholding structure C 99.99 % T 99.99 % C 99.99% T 99.99% AES Com RJ C = Common Shares P = Preferred Shares T = Total C 76.46% P 7.43% T 34.80% AES Eletropaulo AES Tietê Cia. Brasiliana de Energia AES Corp BNDES C 50.00% - 1 share P 100% T 53.85% C 50.00% + 1 share P 0.00% T 46.15% C 71.35% P 32.34% T 52.55% AES EP Telecom C 98.26% T 98.26% AES Sul T 99.76% AES Uruguaiana AES Infoenergy C 100.00% T 100.00%

4. 24.2% 28.3% 39.5% 16.1% 19.2% 56.2% 7.9% 8.0% Shareholding composition 1 – Federal Government and Eletrobrás correspond to AES Eletropaulo and AES Tietê, respectively Free Float Federal Government or Eletrobras 1

5. Energy sector agents in Brazil Ministry of Mines and Energy (MME) National Council of Energy Policy (CNPE) Electric Energy Commercialization Chamber (CCEE) Pricing and clearing of energy transactions Electricity Sector Surveillance Committee (CMSE) Brazilian Electricity Regulatory Agency (ANEEL) Energy Research Enterprise (EPE) Generation companies Transmission companies Distribution companies Trading companies System Operator (ONS) Generator resources scheduling and dispatch (Monitors energy supply) (Ruling, Inspection & Auditing, Monitoring, and Mediation) (Generation & Transmission Planning) (Set Guidelines and Policies) (Formulates Policies)

10. % Ranking¹ for energy distributors Net Revenue 2007 2008 Ebitda 1 st 2 nd 1 st 1 st 1 – Source: ABRADEE (Brazilian Association of Energy Distributors); research among 48 energy distributors in Brazil. Net Revenue - R$ million AES ELETROPAULO CEMIG LIGHT CPFL PAULISTA COPEL COELBA CELESC ELEKTRO AMPLA CELPE BANDEIRANTE CPFL PIRATININGA COELCE CELG Ebitda - R$ million 200 400 600 800 1.000 1.200 1.400 1.600 1.800 AES ELETROPAULO CEMIG LIGHT COELBA CPFL PAULISTA COPEL ELEKTRO AMPLA CELPE COELCE AMAZONAS CPFL PIRATININGA CEMAR RGE 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000

11. Consumption evolution Free Clients Commercial Total Market - (GWh) 1 2009 Consumption Share - (GWh) 1 Residential Others Industrial Free Clients Captive market 1 – Own consumption not considered 2006 2007 2008 410 38,183 39,932 41,243 31,656 6,527 32,577 7,355 33,860 7,383 + 8% 34,436 6,832 41,269 2009 36% 15% 17% 26 % 6%

12. 1 – Own consumption not considered Residential - (GWh) Commercial - (GWh) Industrial - (GWh) Captive Market¹ - (GWh) Most important consumption classes 15,015 2009 1Q09 2,657 2Q09 2,625 3Q09 2,567 2008 10,301 10,752 2009 4Q09 3,801 4Q09 2,902 +4,1% +4.4% 1Q09 1,327 2Q09 1,465 3Q09 1,546 1Q09 8,118 2Q09 8,493 3Q09 8,742 2008 33,860 34,436 2009 4Q09 1,695 4Q09 9,084 - 8.0 % +1.7% 1Q09 3,494 2Q09 3,742 3Q09 3,978 2008 14,427 2008 6,559 6,032 2009

13. Investments amounted up to R$ 516 million in 2009 Paid by customers Investments Breakdown – R$ million Investments 2009 Capex 2007 2008 2009 364 410 69 433 457 47 478 37 516 2010(e) 637 54 691 44% 23% 15% 5% 6% 7% Maintenance IT Others Customer Service and System Expansion Customer Financed Loss Recovery

14. SAIDI & SAIFI SAIDI - System Average Interruption Duration Index Source: ABRADEE, ANEEL e AES Eletropaulo SAIFI - System Average Interruption Frequency Index SAIDI (hours) SAIFI (times) SAIDI Aneel Target SAIFI Aneel Target ABRADEE ranking position between 28 distributors with over 500 thousand consumers 11.81 11.34 10.92 3 o 3 o 5 o 11.86 2009 10.09 8.61 8.49 8.41 3 o 1 o 1 o 2007 5.64 2008 5.20 2006 5.52 2009 6.17 7.87 7.87 2006 8.90 2007 9.20 2008

16. Regulatory WACC (%) 2007 2003 EMBI+ BR 4.63% 2.21% Selic target 16.50% 11.25% Net revenue of R$ 8.0 billion in 2009 Net Revenue – R$ million Ebitda – R$ million 2007 2008 7,529 7,193 2006 6,852 + 17.5% 2009 8,050 2007 2008 2006 1,766 1,696 1,566 17.1 15.1 2009 1,573

18. R$ 993 million paid as dividends in 2009 Managerial Cash Flow – R$ million Initial Cash Operating Cash Flow Investments Net Financial Expenses Net Amortizations CESP Foundation Income Tax Dividends Free Cash Flow Final Cash 2008 1,334 2,019 (374) (285) (94) (192) (295) (577) 201 1,536 2009 1,536 2,332 (482) (291) (320) (224) (309) (286) 1,249 (993)

23. Energy Generation – MW average Billed Energy – GWh AES Eletropaulo MRE 2 Spot Market 13,421 1,740 11,108 13,148 330 1,680 11,138 2006 2007 2008 12,774 536 1,130 11,108 573 Operational Performance 1 - Generated energy divided by the amount of period hours 2 - Energy Reallocation Mechanism Generation – MW Avg. Generation / Physical Guarantee 1 130% 1,424 1,543 1,510 112% 121% 118% 1,662 2006 2007 2008 2009 2009 11,108 2,372 14,436 956 2010 Prices (R$ / MWh) AES Eletropaulo 152.00 MRE 8.51 Spot (2009 avg.) 38.74

24. Investments – R$ million 2009 Investments 1- Small Hydro Power Plants Jaguari Mirim and Piabanha Investments New SHPPs 1 Investments 2007 2008 8 51 59 39 43 20 2009 13 57 44 2010(e) 67 1 68 2006 12 47 35 Equip. and Maint. Environment IT New SHPPs 54% 24% 20% 2%

27. Net Revenue – R$ million Ebitda – R$ million Net revenue of R$ 1.7 billion in 2009 + 20% + 15% 1,254 1,099 1,097 2007 2008 2006 1,260 2009 2007 2008 1,605 1,449 2006 1,366 2009 1,670

29. Managerial Cash Flow – R$ million Strong cash flow 2008 634 1.219 (52) (49) (194) (67) (656) 202 836 5 840 2009 836 1.241 (55) (48) (224) (308) (829) (223) 613 2 615 Initial Cash Operating Cash Flow Investments Net Financial Expenses Net Amortization Income Tax Dividends and Interest on Equity Free Cash Flow Final Cash – Parent Company Final Cash of Subs. And Assoc. Comp. Final Cash

31. Daily Average Volume - R$ thousand Capital market Preferred (GETI4) Common (GETI3) 5,760 9,067 2006 2007 2008 2009 2,101 1,572 2,692 10,187 8,160 5,468 8,086 3,566 4,188 5,531 AES Tietê 1 X Ibovespa X IEE IBOV IEE GETI4 1 – Shares were adjusted by declared dividend of the period under analysis 2 – Data Base: 12/30/08 = 100 2009 2 + 83% + 59% + 41% 70 90 110 130 150 170 190 Dec-08 Mar-09 Jun-09 Sep-09 Dec-09

32. Social Responsibility and Environmental Actions

36. The statements contained in this document with regard to the business prospects, projected operating and financial results, and growth potential are merely forecasts based on the expectations of the Company’s Management in relation to its future performance. Such estimates are highly dependent on market behavior and on the conditions affecting Brazil’s macroeconomic performance as well as the electric sector and international market, and they are therefore subject to changes. Contacts: [email_address] [email_address] + 55 11 2195 7048