 Light divulga Resultados do 3T07 OPERATING PREVIEW

Rio de Janeiro, April 23, 2015 - Light S.A. (BMF&BOVESPA: LIGT3), holding that controls subsidiaries and related companies, discloses a preview of operating information regarding the distribution, generation and commercialization/services segments for the first quarter of 2015 (1T15).

1. Operating Highlights

OPERATING INDICATORS - DISTRIBUTION 1Q15 1Q14 Var. %



Nº of Consumers (thousand) 4,253 4,155 2.4% Nº of Employees 4,237 4,258 -0.5% Average provision tariff - R$/MWh 517 430 20.1% Average provision tariff - R$/MWh (w/out taxes) 360 296 21.5% OPERATING INDICATORS - GENERATION 1Q15 1Q14 Var. %

Installed generation capacity (MW)* 990 961 3.0% Assured energy (MW)* 703 698 0.7% Pumping and internal losses (MW) 87 87 - Available energy (Average MW)* 616 611 0.8% Net Generation (GWh) 808 1,101 -26.6% Load Factor 63.0% 61.9% 1.1 p.p.

* Incl udes proporti ona te s ha re of a s s oci a tes

2. Distribution Market

Total energy consumption in Light SESA's concession area (captive clients + transport of free clients) in 1Q15 was of

7,422 GWh, an increase of 0.6% in comparison to 1Q14, reflecting the growth in the residential (+2.0%) and commercial (+3.7%) segments.

OPERATING PREVIEW Energy Balance

DISTRIBUTION ENERGY BALANCE - GWh

Position: January - March 2015

PROINFA

Residential

122,3 2.805,8

ITAIPU (CCEE)

1.258,6

Own load

Light

Captive Billed Industrial

Energy 342,2

6.207,1

Commercial

AUCTIONS (CCEE)

Required E. (CCEE)

8.803,8 2.110,5

Losses + Non Billed

2.458,8 8.981,0 Energy (**) Others

2.596,7 948,7

NORTE FLU (CCEE)

1.566,7

OTHERS(*) (CCEE)

1.298,2

Basic netw. Losses 148,0

DIT Losses 29,1

COTAS

2.056,5

ANGRA I & II

219,8

(*) Others = Purchase in Spot - Sale in Spot. (**) Includes unbilled energy.

(***) Other transmission lines with less than 230 Kv

Note: 1) At Light S.A., there is intercompany power purchase/sale elimination.

2) Power purchase data as of 04/08/2014 (subject to change).

Energy Balance (GWh)

1Q15

1Q14

Var. %


= Grid Load 10,733 10,944 -1.9%
- Energy transported to utilities 656 614 6.7%
- Energy transported to free customers 1,273 1,284 -0.8%

= Own Load 8,804 9,046 -2.7%

- Captive market consumption 6,207 6,117 1.5% Low Vol ta ge Ma rket 4,311 4,230 1.9% Medi um Vol ta ge Ma rket 1,896 1,887 0.5%

= Losses + Non Billed Energy 2,597 2,929 -11.3%

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OPERATING PREVIEW Collection

Collection Rate per Segment

Quarter

100.2%

104.7%

98.0%

93.2% 90.6%

95.2%

97.2%

95.4%

76.7%

101.0%

94.6%

90.0%

Retail Large Costumers Public Sector Total



1Q13 1Q14 1Q15

The collection rate in 1Q15 reached 90.0% of billed consumption, 4.6 p.p. lower than 1Q14, primarily due time displacement of collection in relation to billing (mathematical effect), caused by: (i) the implementation of the Tariff Flag System (January 2015); (ii) readjustment of Tariff Flags System (March 2015); and (iii) the extraordinary tariff readjustment (March 2015).

Operating Quality


In the last 12 months, the moving average of the equivalent length of interruption indicator (DEC), expressed in time, registered a 13.25 hours.

In the last 12 months, the moving average of the equivalent frequency of interruption indicator (FEC), expressed in

occurrences, stood at 6.60 times.

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OPERATING PREVIEW 3. Generation

LIGHT ENERGIA (GWh)

1Q15

1Q14

Var. %

Free Contracting Environment Sales

1,142.6

1,131.1

1.0%

Spot Sales (CCEE)

160.0

134.5

19.0%

Total

1,302.6

1,265.6

2.9%

Light Energia sold 1,302.6 GWh in 1Q15, 2.9% higher than the 1,265.6 GWh sold in 1Q14.

4. Commercialization and Services

In the first quarter of 2015, the volume of energy sold by Light Com and Light Esco totaled 1,341.9 GWh, in line with the 1,338.0 GWh sold in 1Q14.

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OPERATING PREVIEW 5. Disclosure Program

Schedule

Teleconference

05/11/2015, Monday, at 3:00 p.m. (Brasília Time) and at 2:00 p.m. (Eastern Time), with simultaneous translation to English
Access conditions:

Webcast: link on site www.light.com.br/ri (portuguese and english)

Conference Call - Dial number: Brazil: +55 (11) 2188 0155

USA: +1 (646) 843-6054
Other countries: +1 866 890 2584
Access code: Light

IR Team

Contact e-mail Phone

Mariana da Silva Rocha mariana.rocha@light.com.br +55 21 2211-2814

Bruna Dutra Alvarenga bruna.alvarenga@light.com.br +55 21 2211-2660

Leonardo Dias Wanderley leonardo.wanderley@light.com.br +55 21 2211-2828

Forward-looking statements

The operating information disclosed herein is a preview. Statements about future events are subject to risks and uncertainties. These statements are based on beliefs and assumptions of our Management, and on information currently available to the Company. Statements about future events include information about our intentions, b eliefs or current expectations, as well as of the Company's Board of Directors and Officers. Exceptions related to statements and information about the future also include information about operating results, likely or presumed, as well as statements that are preceded by, followed by, or including words such as "believes", "might", "will", "continues", "expects", "estimates", "intends", "anticipates", or similar expressi ons. Statements and information about the future are not a guarantee of performance. The y involve risks, uncertainties and assumptions because they refer to future events, thus depending on circumstances that might or might not occur. Future resul ts and creation of value to shareholders might significantly differ from the ones expressed or s uggested by forward-looking

statements. Many of the factors that will determine these results and values are beyond LIGHT S.A.'s control or forecast capa city.

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