Equatorial Energia reported its operating and financial results for the second quarter of 2010. Key highlights include: 1) CEMAR's total energy sales increased 29% compared to the second quarter of 2009, reaching 1,020 GWh. CEMAR's energy losses over the last 12 months decreased to 22.2% from 28.1% in the second quarter of 2009. 2) Equatorial Energia's consolidated net operating revenues increased 20.3% compared to the second quarter of 2009, totaling R$315.8 million. EBITDA increased 22.5% to R$113.4 million. 3) Net income increased 30.5% to R$44.

1. 2Q10
Resultados
Operating and Financial
Operacionais
Results e Financeiros
2Q10
1T08
August 12, 2010
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2. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
2

3. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
3

4. 2Q10
Introduction
Presentation of Operating and Financial Information
► The financial information contained herein is presented in consolidated figures, pursuant to Brazilian
Corporate Law, based on revised financial information. The consolidated financial information
represents: i) 100% of CEMAR’s results, excluding 34.86% related to minority interests, ii) 25% of
Geramar’s results and iii) 100% of Equatorial Soluções Results. In view of Equatorial’s partial spin-off, as
from this quarter, we no longer consolidate Light’s figures.
► The operating information presented herein consolidates 100% of CEMAR’s results and 25% of
Geramar’s results. Since this quarter, we are no longer consolidating Light’s operating results.
► In order to facilitate comparisons between quarters and semesters, the operating and financial
information of 2Q09, 1Q10, 1S09 and 1S10 is pro forma, so that the interest held by Equatorial in RME is
not being considered.
► The following information was not reviewed by the independent auditors: i) non-financial information
relating to CEMAR, Light and the PLPT (Programa Luz para Todos - Light for All Program); ii) pro forma
information and its comparison with the results presented in the period; and iii) management
expectations regarding the future performance of the Companies.
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5. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
5

6. 2Q10
Operating Highlights
► Starting this quarter, due to Equatorial’s partial spin-off, we are no longer consolidating Light’s
financial and operating results.
► CEMAR’s total energy volume amounted to 1,020 GWh in 2Q10, 29.0% greater than in 2Q09.
► CEMAR’s last-12-month energy losses totaled 22.2% of required energy by the end of 2Q10, 5.9 p.p.
less than in 2Q09.
► CEMAR’s last-12-month 2Q10 DEC index improved 12.2%, dropping to 23.0 hours, while last-12-month
FEC index improved 5.7%, to 15.0 times, in comparison with 2Q09.
► On August 09, 2010, Redentor Energia, a company resulting from Equatorial Energia’s spin-off,
received the authorization to be registered as publicly-traded company by the Brazilian Securities and
Exchange Commission (CVM). We note that the shares issued by Equatorial, EQTL3, are still traded
“cum rights” to the spin-off until the conclusion of the process of listing and admission of trading of
Redentor shares in the Novo Mercado segment.
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7. 2Q10
Financial Highlights
► Net operating revenues (NOR) reached R$315.8 million in 2Q10, 20.3% up over 2Q09.
► 2Q10 EBITDA reached R$113.4 million, up by 22.5% over 2Q09 adjusted EBITDA.
► Net income came to R$44.1 million in 2Q10, reflecting a 30.5% increase over 2Q09 adjusted
Net income.
► In 2Q10, Equatorial’s consolidated investments totaled R$96.5 million, 20.0% lower in
comparison with 2Q09. CEMAR’s investments (excluding direct investments in the PLPT
program) totaled R$43.4 million in 2Q10. PLPT investments reached R$45.7 million.
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8. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
8

9. 2Q10
CEMAR – Electricity Market
► CEMAR: 2Q10 energy sales moved up by 29.0%, reaching 1,020 GWh.
Electricity Consumption per Segment (GWh)
CONSUMPTION CLASS (GWh) 2Q09 1Q10 2Q10 Chg. 1S09 1S10 Chg.
Residential 363.7 449.4 474.6 30.5% 746.7 924.0 23.7%
Industrial 80.7 97.3 105.6 30.9% 171.2 202.9 18.5%
Commercial 160.4 190.4 200.5 25.0% 321.7 390.9 21.5%
Others 186.6 222.8 239.9 28.6% 368.3 462.7 25.6%
TOTAL 791.2 959.9 1,020.5 29.0% 1,608.0 1,980.4 23.2%
Energy Balance (GWh)
ENERGY BALANCE (GWh) 2Q09 1Q10 2Q10 Chg. 1S09 1S10 Chg.
Required Energy 1,119 1,240 1,286 14.8% 2,235 2,526 13.0%
Sales (*) 793 960 1,022 29.0% 1,611 1,982 23.1%
Losses 327 280 264 -19.4% 624 544 -12.8%
(*) Includes sales to the market, own consumption and sales to CEPISA.
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10. 2Q10
Distribution – Energy Losses in CEMAR
Total Losses over Required Energy
(last 12 months)
28.7% 28.9% 28.6% 28.9%
28.5% 28.1%
28.1%
26.4%
25.6%
24.2%
25.2%
22.2%
4Q07 1Q08 2Q08 3Q08 4Q08 1Q09 2Q09 3Q09 4Q09 1Q10 2Q10
Regulatory Target
Total Losses (from Aug-09 until Jul-10)
Non-technical Losses over Low-Voltage Market
(last 12 months)
30.4% 30.6% 30.0%
29.9%
29.0% 28.7%
27.3%
24.2%
21.5%
23.7%
19.8%
15.9%
4Q07 1Q08 2Q08 3Q08 4Q08 1Q09 2Q09 3Q09 4Q09 1Q10 2Q10
Regulatory Target
Non-technical Losses (from Aug-09 until Jul-10)
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11. 2Q10
Distribution – DEC and FEC (Last 12 months)
► CEMAR: The DEC index improved 12.2% compared with 2Q09 and the FEC index improved 5.7% in the same period.
DEC (hours) FEC (times)
-12.2%
26.2
23.0 -5.7%
15.9 15.0
2Q09 2Q10 2Q09 2Q10
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12. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
12

13. 2Q10
Consolidated Performance
Net Operating Revenues* EBITDA*
2 0 .3 % 3 15 .8 2.9%
0.9%
2 6 2 .6 113 .4 5.2%
2 1.7 %
9 3 .2 1.8%
96.2%
100.0% 93.0%
100.0%
2T09 2T10 2T09 2T10
CEM A R EQTL So luçõ es Geramar CEM A R EQTL So luçõ es Geramar
Net Income*
5 4 .5 - 19 .1%
0.3% 4 4 .1 2.6%
3.6%
99.7%
93.8%
2T09 2T10
CEM A R EQTL So luçõ es Geramar
*Only operating companies are being considered in these graphs.
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14. 2Q10
Pro-forma EBITDA
Pro-forma EBITDA
22.5%
0.6
113.4
93.2 92.6
2Q09 EBITDA BT Security 2Q09 Adjusted 2Q10 EBITDA
EBITDA
► BT Security: R$0.6 million recognized in NOR, arising from the principal amount of the collateral offered by CEMAR to take
out a loan with the Brazilian Treasury in prior years
► Like in 1Q10, 2Q10 EBITDA was also negatively affected by the R$10.6 million amortization of the Low Income Subsidy to the
extent this asset was already recognized in 3Q09’s result when it was defined as a Financial Component of CEMAR’s Periodic
Tariff Review. If the previous accounting rule were applied in 2Q10, its EBITDA would be R$124.1 million, which represents a
34.0% increase over 2Q09 (instead of the 22.5% increase reported above).
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15. 2Q10
CEMAR’s EBITDA: Low Income Subsidy Accounting
CEMAR’s EBITDA Evolution
-7
-10
32
-11
-10
107 105
96 130 107
89
1Q09 2Q09 3Q09 4Q09 1Q10 2Q10 3Q10*
Reported EBITDA Asset Constitution Asset Amortization
* Hypothetical example of 3Q10 EBITDA’s behavior. It does not represent a value forecast.
► We highlight the change in accounting standards related to the Low Income Asset occurred in the Tariff Revision of August, 2009. Though
treated as a Financial Component in the review process, said grant will be determined and granted to the company in each annual
readjustment, always in August, and shall be effective for the subsequent 12 months being monthly amortized.
► Always in the 3Q of each year, the amount granted by ANEEL relating to the Low Income Subsidy will be booked in CEMAR’s EBITDA. In all
other quarters, this value will be amortized meaning a reduction of EBITDA under the new accounting standards.
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16. 2Q10
Consolidated Performance
Adjusted Net Income
2.9
30.5%
17.8
44.1
54.5
33.8
2Q09 Net BT Security Fiscal Asset Adjusted 2Q09 2Q10 Net
Income Net Income Income
► BT Security: In 2Q09, the subsidiary CEMAR recorded R$2.9 million due to monetary corrections and exchange level variations of a
collateral used as a guarantee for operations with the Brazilian Treasury in past quarters.
► CEMAR’s 2Q09 net income was extraordinarily affected by the recognition of a positive adjustment of R$17.8 million of Deferred Tax
Assets related to fiscal losses, negative bases and temporary differences of past quarters.
► Like in 1Q10, 2Q10 Net Income was also negatively affected by R$6.3 million related to the amortization of the Low Income Subsidy to the
extent this asset was already recognized in 3Q09’s result when it was defined as a Financial Component of CEMAR’s Periodic Tariff Review.
If the previous accounting rule were applied in 2Q10, its Net Income would be R$50.4 million, which represents a 49.1% increase over 2Q09
(instead of the 30.5% increase reported above).
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17. 2Q10
Debt: Schedule of Gross Debt Maturities
Consolidated Gross Debt
(100% CEMAR + 25% Geramar)
108.7 65.2
Geramar
188.7
-
63.3
-
170.6
-
282.9
1,187.2
-
106.5 43.5
CEMAR
375.2
Gross Debt Short Term 2011 2012 2013 2014 After 2014
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18. 2Q10
Net Debt - Consolidated
100% CEMAR + 25% Geramar
Net Debt (R$MM)(*) and Net Debt/ EBITDA Net Debt Reconciliation (R$MM)
(Last 12 months)
2.1
1.9
1.7 1.7 1.7 29.4
857.9 804.7 490.8
768.7 754.3 775.7
1,295.9
775.7
2Q09 3Q09 4Q09 1Q10 2Q10 Debt Regulatory Cash and Net Debt
Assets Equivalents
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19. 2Q10
Net Debt – Pro-Rata
65.12% CEMAR + 25% Geramar
Net Debt (R$MM)(*) and Net Debt/ EBITDA Net Debt Reconciliation (R$MM)
(Last 12 months)
2.0
1.9 1.7
1.7 1.7
19.1
542.0 519.6 350.0
500.7 494.7 512.7
881.8
512.7
2Q09 3Q09 4Q09 1Q10 2Q10 Debt Regulatory Cash and Net Debt
Assets Equivalents
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20. 2Q10
Capex - Equatorial
► CEMAR: In the 2Q10, total capex reached R$89.1 million, of which R$43.4 million are own capex and R$45.7 million regarding the
Light for All Program (PLPT).
► Geramar invested R$7.4 million in the final steps of its plants’ construction.
INVESTMENTS (R$MM) 2Q09 1Q10 2Q10 Chg. 1H09 1H10 Chg.
CEMAR
Own (*) 70.1 38.3 43.4 -38.1% 113.3 81.7 -27.9%
PLPT 28.6 33.1 45.7 59.7% 64.4 78.8 22.3%
Total 98.7 71.4 89.1 -9.8% 177.7 160.5 -9.7%
Geramar
Generation 21.9 6.3 7.4 -66.3% 29.7 13.7 -54.1%
TOTAL EQUATORIAL 120.6 77.6 96.5 -20.0% 207.4 174.1 -16.1%
(*) Includes indirect PLPT investments.
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21. 2Q10
Agenda
► Introduction
► Highlights
► Operating Results
► Financial Results
► Redentor
21

22. 2Q10
Spin-off
► Since Equatorial’s partial spin-off approved by the Annual and Extraordinary General Meeting, held on
04/29/2010, the company’s corporate structure is as presented below:
PCP Minorities
54.1% 45.9%
Redentor Equatorial
Energia S.A. Energia S.A.
100% 65.1% 25% 100%
RME Equatorial
CEMAR Geramar
Rio Minas Energia Soluções
13.03%
Light S.A.
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23. 2Q10
Contacts
Eduardo Haiama
CFO and IRO
Thomas Newlands
Investor Relations
Telephone 1: +0 55 (21) 3206-6635
Telephone 2: +0 55 (21) 3217-6607
Email: ir@equatorialenergia.com.br
Website: http://www.equatorialenergia.com.br/ir
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24. 2Q10
Disclaimer
• This presentation may contain forward-looking statements, which are subject to risks and uncertainties, as they were based on the
expectations of Company’s management and on available information. These prospects include statements concerning the Company’s
current intentions or expectations for our clients; this presentation will also be available at our website www.equatorialenergia.com.br/ir and
in the IPE system of the Brazilian Securities and Exchange Commission (CVM).
• Forward-looking statements refer to future events which may or may not occur. Our future financial situation, operating results, market share
and competitive positioning may differ substantially from those expressed or suggested by said forward-looking statements. Many factors
and values that can establish these results are outside Company’s control or expectation. The reader/investor is advised not to completely
rely on the information above.
• The words “believe", “can", “predict", “estimate", “continue", “anticipate", “intend", “forecast" and similar words, are intended to identify
estimates, which refer only to the date on which they were expressed. Hence, the Company has no obligation to update said statements.
• This presentation does not constitute any offering, invitation or request of subscription offer or purchase of any marketable securities. And,
this statement or any other information herein, does not constitute the basis for any contract or commitment of any kind.
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