1. Corporate Presentation
July 2013

2. Light Holdings 2

3. Light in numbers Generation Distribution 1
RJ State
Concession Area %
Population¹
16 mn
11 mn
68%
Area¹
44,000 Km²
11,000 Km²
25%
GDP¹
R$ 407 bn
R$ 207 bn
66%
# Consumers
7 mn
4 mn
57%
# Municipalities 92 31
34%
1 IBGE (2010)
Generation 1
Amazônia Energia Renova Guanhães Energia 2 3 6
SHP Paracambi 4
HPP Itaocara 7
Complexo de Lajes 5
HPP Ilha dos Pombos 8
HPP Santa Branca 3

4. Rankings Among the largest players in Brazil
INTEGRATED²
Net Revenues 2012 – R$ Billion
DISTRIBUTION¹
Energy Consumption in Concession Area (GWh)
18.5
37,626
15.0
11.8
24,714
22,737
8.5
21,467
6.9
20,054
15,018
6.6
GENERATION PRIVATE-OWNED COMPANIES²
Installed Hydro-generation Capacity (MW) – 2012
5,560
2,658
2,241
1 – Source: Captive market
2 – Source: Companies reports
* Considers the 9 MW of Renova’s SHPs
2,219
2,012
877 * 4

5. Shareholders Structure
11 Board members: 8 from the controlling group, 2 independents e 1 employees nominated
A qualifying quorum of 7 members to approve relevant proposals such as: M&A and dividend policy 5

6. Corporate Governance LGSXY General Assembly Fiscal Council
Board of Directors
Finances Committee
Human Resources Committee
Auditors
Committee
Governance and Sustainability Committee
Management Committee
Chief Executive Officer
Paulo Roberto R. Pinto
Chief Financial and Investor Relations Officer
Chief Distribution Officer
Chief Energy Officer
Chief HR Officer
João B. Zolini Carneiro
Ricardo Cesar C. Rocha
Evandro L. Vasconcelos
Andreia Ribeiro Junqueira
Chief Legal Officer
Corporate Management Officer
Chief Business Officer
Chief Communications Officer
Fernando Antônio F.Reis
Paulo Carvalho Filho
Evandro L. Vasconcelos*
Luiz Otavio Ziza Valadares
Interim*
LGSXY
ADR-OTC 6

7. Energy Consumption Distribution – Quarter
TOTAL MARKET (GWh) ¹
Others 13%
+1.8%
Industrial 5%
+3.7%
Free 19%
6,291
6,407
6,087
6,180
With the consumption no longer billed by the change in criteria, the total energy consumption increase in the concession area would be 5.3% over 1Q12.
28.3ºC
Residential 35%
27.8ºC
27.0ºC
26.9ºC
Commercial 28%
1Q10
1Q11
1Q12
1Q13
1Note: To preserve comparability in the market approved by Aneel in the tariff adjustment process, the billed energy of the free customers Valesul, CSN and CSA were excluded in view of these customers’ planned migration to the Basic Network. 7

8. ELECTRICITY CONSUMPTION (GWh)
Total Market
ELECTRICITY CONSUMPTION (GWh)
TOTAL MARKET – QUARTER
+3.7%
6,407
6,180
835
+3.2%
801
+7.8%
2,423
2,348
1.877
1.748
2,091
1,939
214
5,572
191
-3.7%
+3.7%
5,379
962
927
932
966
1,877 49 53
1,748
561
568
882
913
401
359
1Q12
1Q13
1Q12
1Q13
1Q12
1Q13
1Q12
1Q13
1Q12
1Q13
RESIDENTIAL
COMMERCIAL
INDUSTRIAL
OTHERS
TOTAL
CAPTIVE
FREE 8

9. Prospects for State of Rio
Investments of R$ billion in the State of Rio de Janeiro¹
Events Schedule
Period
Confederations Cup
World Youth Day
World Cup
Olympics
Paralympics
Tourism
R$ 1.8 bn
0.9%
Oil
R$ bn
50.9%
Jun, 15 to 30/2013
Jul, 23 to 28/2013
Jun, 12 to Jul, 13/2014
Aug, 5 to 21/2016
Sep, 7 to 18/2016
Others
R$ 1.9 bn
0.9%
Olimpic Facilities
R$ 8.6 bn
4.1%
Transformation Industry
R$ 40.5 bn
19.1%
Infrastructure
R$ 51.0 bn
24.1%
¹Source: Firjan (Industry Federation of Rio de Janeiro) 9

10. Collection rate by segment
Quarter
COLLECTION RATE BY SEGMENT
QUARTER
COLLECTION RATE
12 MONTHS
104.7%
101.0%
100.2%
99.2%
100.6%
99.5%
97.7%
95.0%
97.2%
92.0%
Total
Retail
Large Clients
Public Sector
Mar/12
Mar/13
1Q12
1Q13 10

11. Losses 12 months 63% Non-Risky Area 37% Risky Area 11 45.4% 44.9%
Reflects exclusion of long term delinquent customers from the billing system, according to Resolution 414 by Aneel.
12 months
45.4%
44.9%
43.1%
42.1%
41.8%
42.2%
41.6%
41.3%
40.7%
41.2%
40.4%
32.9%
8,584
8,647
7,619
7,838
8,047
7,544
7,493
7,543
7,627
7,582
7,665
63% Non-Risky Area
5,330
5,312
5,326
5,615
6,007
6,029
5,278
5,229
5,247
5,316
5,457
37% Risky Area
63% Non-Risky Area 37% Risky Area
2,214
2,215
2,231
2,293
2,328
2,335
2,349
2,381
2,432
2,577
2,618
Sep/10
Dec/10
Mar/11
Jun/11
Sep/11
Dec/11
Mar/12
Jun/12
Sep/12
Dec/12
Mar/13
Non-technical losses GWh
Technical losses GWh
% Non-technical losses/ LV Market
% Non-technical losses /
LV Market - Regulatory 11

12. Concession Area Losses Map
Non Technical Losses
Concession Area Losses Map
PARAÍBA
VALLEY
LITORÂNEA
WEST
EAST
As March / 2013
BAIXADA
Grupo
Light
Valley
Litorânea
East
West
Baixada
# Clients
4,029,805
418,489
814,157
857,437
934,709
1,005,013
Low Voltage Market (GWh)
13,411
1,129
4,934
2,558
2,507
2,283
Non Technical Losses (GWh)
6,029 43
267
1,787
1,924
2,008
Non Technical Losses/LV Mkt (%)
44.95%
3.78%
5.40%
69.87%
76.74%
87.98% 12

13. New Technology Program
Light aims to reduce losses through investments in new technologies, integration of operational activities, increase of public awareness and institutional partnerships with interested agents.
Grid shielding projects
Technology used in regions in which conventional measures are not effective
Areas that present high levels of non-technical losses
Control room
Actual grid
Shielded grid
Centralized meter
9 m
3 m
Mechanical Meter 13
Display

14. New Technology Program
Meters Installed
(Thousands)
373
341 79 69
227 30
122 80 7
272
294 2
197
115
Monitoring, reading, cutting and reconnection of customers telemetry– MCC (Measuring Center Centralized)
Prioritization in areas of high losses and aggressiveness to the network
Technology hindering inappropriate interference in networks 78
2009
2010
2011
2012
May/13
FAVELAS
OUT OF FAVELAS 14

15. Pacified Favelas (UPPs)
State Government
Light
Present in 15 UPPs, 9 already concluded
60,000 consumers
200,000 people achieved
30 UPPs until 2014
33 UPPs established
130,000 households
40 UPPs until 2014
PARTNERSHIP
Safety, citizenship, and social inclusion 15

16. Project: “Light Legal” (APZ – Zero Losses Area)
Focused in areas with 10,000 to 20,000 clients with high level of losses and delinquency;
Fully-dedicated teams of technicians and commercial agents;
Small areas to cover, enabling higher productivity;
Constant and accurate results monitoring by Light;
Result-linked remuneration for services provided;
Fixed remuneration above market and aggressive
variable remuneration;
Police Force support, when necessary. 16

17. Losses Control Initiatives
Results until March/13
Zero Losses Area (APZ)
Favelas
Average losses reduction : 49.5 p.p.
Average Collection increase : 80.4 p.p.
Average losses reduction: 23.0 p.p.
Average Collection increase: 14,5 p.p. 17

18. Losses Reduction - Business Case
An example
NEW METER INSTALLATION
REAL CONSUMPTION
300 kWh
ENERGY SAVED
100 kWh
LOST ENERGY
200 kWh
BILLED CONSUMPTION INCREASE
BILLED CONSUMPTION
100 kWh
100 kWh
OTHER EFFECTS (BY-PRODUCTS):
BAD DEBT PROVISION REDUCTION
OPERATIONAL COSTS REDUCTION
CAPEX GOES TO THE RAB 18

19. GENERATION BUSINESS

20. Installed Capacity 868 MW 51% 100% 20 HPP Santa Branca 56 MW
HPP Ilha dos Pombos 187 MW
HPP Fontes Nova
132 MW
HPP Underground
Nilo Peçanha MW
HPP Pereira Passos
100 MW SP RJ
Paraiba do Sul River
HPP Ilha dos Pombos
100%
Lajes Complex
51%
SHP Paracambi
13 MW 20

21. Re-pricing of existing energy
Conventional Energy Balance
Assured energy (MW average)
2013
2014
2015
2016
2017
2018
2019
2020
2021
Average sale price to free market (R$/MWh)¹
143
147
155
164
166
167
170
Contracted Energy (Regulated)
Contracted Energy (Free)
Available Energy
Hedge
¹Database january. 2013
2Average price to Regulated Market (dec/12): R$ 88,62/MWh 21

22. Installed Capacity (MW) Assured Energy (MWaverage)
Generation Projects
Project
Installed Capacity (MW)
Assured Energy (MWaverage)
Operational Start
Stake
Renova
335 (in operation)
(contracted)
173.1 (in operation)
395 (contracted)
2008/2012
21.99%
Belo Monte
11,223
4,571
2015
2.49%
Itaocara
151 83
51%
Guanhães 44
25.03
2014
Lajes 17 16 22

23. Capacity After Expansion
Generation Projects
Investments in Renova, Belo Monte and Guanhães in line with our strategy of growing in the generation business
Installed Capacity (MW)
+ 59.8%
280 22
1,505
175 77
74*
942 9
855 13
Installed
Capacity
(+) SHP
Paracambi¹
Current
Capacity
(+) SHP
Lajes¹
(+) HPP
Itaocara¹
(+) Belo
Monte³
Capacity After Expansion
(+) Renova²
(+) Renova²
(+) Guanhães¹
¹ Considering 51% stake
² Considering 21.99% stake
³ Considering 2.49% stake 23
* 9 MW SHP + 65 MW Wind Farm (since jul/12)

24. RESULTS

25. Net Revenue NET REVENUE BY SEGMENT (1Q13)* NET REVENUE (R$MN)
Commercialization
8.6%
Generation 7.1%
+7.5
Distribution 84.0%**
2,040.0
1,898.7
157,3
137,4
* Eliminations not considered
** Construction revenue not considered
+6,9%
1,883.1
1,761.3
NET REVENUE FROM DISTRIBUTION (1Q13)
1Q12
1Q13
Network Use (TUSD) (Free + Concessionaires) %
Residential
45.1%
Construction Revenue
Others (Captive) 11.7%
Revenue w/out construction revenue
Industrial
5.5%
Commercial
29.7% 25

26. Operating Costs and Expenses
DISTRIBUTION MANAGEABLE COSTS (R$MN)
COSTS (R$MN)*
1Q13
-4.8%
333.1
317.1
Non manageable (distribution): R$ 1,261.2
(70.8%)
Generation and Commercialization: R$ 203.5
(11.4%)
1Q12
1Q13
Manageable (distribution): R$ 317.1
(17.8%)
R$ MN
1Q12
1Q13
Var.
PMSO
167.6
184.0
9.7%
Provisions
86.5
45.2
-47.7%
PCLD
61.6
29.0
210.2%
Contingencies
24.9
16.2
554.9%
Depreciation
75.7
80.6
6.5%
Other operational/
revenues expenses
3.2
7.3
127.3%
Total
333.1
317.1
-4.8%
* Eliminations not considered
** Construction revenue not considered 26

27. EBITDA CONSOLIDATED EBITDA (R$MN) EBITDA BY SEGMENT* 1Q13
433.4
-18.1%
355.1
Distribution 63.8%
(EBITDA Margin: 13.5%)
Commercialization 2.8%
(EBITDA Margin: 5.6%)
Generation 33.4%
(EBITDA Margin: 82.1%)
1Q12
1Q13
*Eliminations not considered 27

28. EBITDA EBITDA – 1Q12 / 1Q13 (R$ MN) + 5.8% - 18.1% 122 433 101 456 43142
355
(2)
(175)
(19)
(7)
(1)
Adjusted EBITDA 1Q12
Regulatory Assets and Liabilities
EBITDA 1Q12
Net Revenue
Non-Manageable Costs
Manageable Costs (PMSO)
Other operational/
revenues
Provisions
Equity Pick-up
EBITDA 1Q13
Regulatory Assets and Liabilities
Adjusted EBITDA 1Q13 28

29. Net Income ADJUESTED NET INCOME 1Q12 / 1Q13 (R$ MN) + 4.8% - 43.8% 67
145
139
140
(1) 30 79
(4)
(78)
(9)
Adjusted Net Income 1Q12
Regulatory Assets and Liabilities
1Q12
EBITDA
Financial Result
Taxes
Others
1Q13
Regulatory Assets and Liabilities
Adjusted Net Income 1Q13 29

30. *Based on Net Income of the year. before IFRS adjustments
Dividends *
*Based on Net Income of the year. before IFRS adjustments 30

31. Indebtedness NET DEBT AMORTIZATION SCHEDULE* (R$ MN)
Without Pension Fund
AMORTIZATION SCHEDULE* (R$ MN)
Average Term: 4.7 years 3,
4,031.4
982
792
759
616
2.83
2.73
357
394
176
194 42 42 42
Dec/12
Mar/13
Net Debt / EBITDA for covenants
Others 2.0%
* Principal only
COST OF DEBT
11.08%
11.03%
TJLP 24.3%
8.21%
7.73%
4.87%
4.25%
2.24%
1.07%
US$/Euro 0.4%
2010
2011
2012
Mar/13
CDI/Selic 73.3%
Nominal Cost
Real Cost
*ConsideringHedge 31
1 Reclassified to reflect the deconsolidation results of jointly controlled companies.

32. Investments CAPEX BREAKDOWN (R$ MN) CAPEX (R$ MN) 1Q13 32
Develop. of Distribution System
51.6
928.6
796.8
700.6
153.8
102.7
Commerc./ Energy Eficiency 26.1
563.8
116.9
181.8
Losses Combat
44.7
774.8
694.1
+13.9%
518.8
142.9
162.7
446.9
Generation Projects
26.9
11.7
35.8
131.2
127.0
Quality Improvement
13.4
2009
2010
2011
2012
1Q12
1Q13
Generation Maintenance
3.1
Investments in Electric Assets (Distribution)
Others
17.2 32

33. Why invest in Light? Economic Transformation in the Concession Area
Major upcoming events
Integration of favelas
Pro-business environment
New plants investments
Expansion of the existing ones
Market growth
Repricing of Existing Energy
New PPAs starting in 2013 and 2014
Revenues increase with no aditional costs.
Very active trading subsidiary
Energy
Losses Reduction
Progress in the Technology Program
New network and meters in the pacified favelas
Smart metering development
“Zero Losses Area” Program
Best-in-Class Corporate Governance
Listed in “Novo Mercado” of Bovespa;
Board Committees very active
Included in the Sustainability Index (ISE) of Bovespa for the sixth year.
Growth in the Generation Business
Investment in Renova, Belo Monte and Guanhães (total of 477 MW)
SHP Lajes under construction.
HPP Itaocara
Dividend track Record
Sound Dividend Policy: minimum 50% of net income;
Average payout since 2007: 91% 33

34. Regulatory Framework
The Provisional Measure 579 was enacted on September 11, 2012 and thereafter converted into Law 12,783 providing for electric power concessions, reduction of sector charges and reasonable tariffs which although these have not directly affected Light, as its concessions will expire only in 2026, resulted in the following developments:
on January 24, 2013, Resolution issued by Aneel approved an average reduction of 19.63% in Light SESA’s tariffs. For residential consumers (low voltage), the reduction was 18.10%. The measure will have no impact on the company’s result or cash flow since it reflects an equal reduction in costs.
on the same date, the distribution of power plants energy quotas was ratified, which had their concession renewed:
(i) but lower to the distribution companies’ contracting needs, thus, causing an involuntary exposure, and only for Light it accounted for average 156 MW; and
(ii) made distribution companies to start sharing the hydrological risks, which before was only supported by generation companies
As of October 2012, an adverse hydrological situation was characterized in Brazil’s electricity sector, the basis of which is mainly hydric, enforcing the System National Operator to dispatch all the thermal power plants available in the system, thus significantly rising the costs of distribution companies by increasing fuel expenditures in availability agreements, increasing System Service Charges due to energy security and acquisitions on the spot market in order to answer that involuntary exposure. 34

35. ENERGY PURCHASE (R$ MN) CHARGES AND TRANSPORT (R$ MN)
Regulatory Framework
On March 8, 2013, the federal government issued the Decree 7,945 preventing the coverage of part of the non-manageable costs not covered by the 2013 tariff, through the resources transferred from the Energetic Development Accout (CDE) for the following costs:
System Service Charge (ESS) – The monthly transfer will be determined by the amounts settled in the CCEE.
Involuntary Exposure associated with the quotas – The monthly CDE transfer will cover the difference between the difference settlement price (PLD) and the tariff of the repositioning amount recognized in Light’s last tariff adjustment.
Hydrological Risk - The net monthly amount settled in the CCEE will be transferred directly via the CDE.
It is worth mentioning that the amounts approved for Light reflect the methodology approved by Aneel on May 6th, 2013.
ENERGY PURCHASE (R$ MN)
CHARGES AND TRANSPORT (R$ MN)
1,370.9
314.2
+ 31.9%
1,079.9
291.9
362.2
-12.8%
70.4
818.2
203.9
136.3
177.9
144.9
144.9
27.2
215.3
23.5
267.1
267.1
122.8
235.4
79.0
371.0
371.0
130.9
362.1
52.8
52.8
225.7
225.7
70.7
46.1
46.1
49.5
1Q13 without Decree
CDE
transfer
1Q13
1Q12
1Q13 Without Decree
CDE
transfer
1Q13
1Q12
Spot
Itaipu
Norte Fluminense
ESS
Transport
Other Charges 35
Other Auctions
Availability Contracts

36. 2013 Tariff Review Critical Issues
Remuneration Asset Base
Non-Technical Losses
R$ 2.7 billion (nominal terms) invested during the current cycle ( )
Capitalization improvement driven by simulations
Physical-accounting assets concilliation
Constant interactions with Aneel staff, including site visits
Intensive training of teams for correct accounting records
Accounting system blocked against input errors
Aiming the flexibility of the regulatory target, based on Aneel’s excepcionality criteria:
large gap between actual and regulatory level of losses;
social and economic conditions hindered the achievement of the target; and
there are no comparable peer companies with lower level of losses. 36

37. 2013 Tariff Review Schedule
Date
Event
July 16
Aneel forwards first proposal (without remuneration and depreciation) to the concessionary and to the consumers representatives
August 01
Internet presentation of the Tariff Review Proposal prepared by Aneel
From Aug/5 to Aug/16
Regulatory Asset Base fiscalization
September 05
Public Hearing
October 03
Aneel forwards new proposal consolidated to the concessionary and to the consumers representatives
October 24
Aneel Board Meeting
November 07
Periodic Tariff Review Date 37

38. Important Notice
This presentation may include declarations that represent forward-looking statements according to Brazilian regulations and international movable values. These declarations are based on certain assumptions and analyses made by the Company in accordance with its experience, the economic environment, market conditions and future events expected, many of which are out of the Company’s control. Important factors that can lead to significant differences between the real results and the future declarations of expectations on events or business-oriented results include the Company’s strategy, the Brazilian and international economic conditions, technology, financial strategy, developments of the public service industry, hydrological conditions, conditions of the financial market, uncertainty regarding the results of its future operations, plain, goals, expectations and intentions, among others. Because of these factors, the Company’s actual results may significantly differ from those indicated or implicit in the declarations of expectations on events or future results.
The information and opinions herein do not have to be understood as recommendation to potential investors, and no investment decision must be based on the veracity, the updated or completeness of this information or opinions. None of the Company’s assessors or parts related to them or its representatives will have any responsibility for any losses that can elapse from the use or the contents of this presentation.
This material includes declarations on future events submitted to risks and uncertainties, which are based on current expectations and projections on future events and trends that can affect the Company’s businesses. These declarations include projections of economic growth and demand and supply of energy, in addition to information on competitive position, regulatory environment, potential growth opportunities and other subjects. Various factors can adversely affect the estimates and assumptions on which these declarations are based on. 38

39. Contacts João Batista Zolini Carneiro CFO and IRO
Luiz Felipe Negreiros de Sá Superintendent of Finance and Investor Relations
Gustavo Werneck IR Manager 39