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March 31st, 2013

COMPANHIA DE GÁS DE SÃO PAULO

Financial and Operational Results

Disclaimer

The statements contained in this report regarding the outlook on business,

estimations on financial and operational results and growth prospects for COMGÁS

are merely estimations and, as such, are based exclusively on management

expectations regarding future events and tendencies, that affect or may affect the

business. These estimations are subject to many risks and uncertainties and are

made considering the information currently available, and depend, substancially on

market conditions, the Brazilian economys performance, the business sector and

international markets, and are therefore subject to change without pior notice.

Because of these uncertainties, the investor should not make any investment

decisions based on these estimations and declarations on future operations.

Financial and Operational Results

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Highlights 1Q13

Total volume of 1,367mm³ during 1Q13, 15% above that of 1Q12;

Growth of 44% in investments compared to 1Q12, summing R$ 175mm in 1Q13;

EBITDA of R$ 314mm, variation of +43% compared to 1Q12, due to the regulatory current account;

Network extension of 300 km during the quarter, 15% above that of the same period in 2012;

Third issuance of the Company’s promissory notes in the value of R$ 400mm.

1Q12 1Q13

68%

6%

4%

3%

2%17%

66%

5%0%

20%

7%

2%

+15%

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Volume in million of m3

1,187

1,367

413.7 mi R$

1.4 bi m³

Margin

Volume

72,0%

6,8%

5,2%

3,8%

2,1%

10,0%

Industrial Cogeneration NGV Residential Commercial Thermal Generation

Meters

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Total per Segment

*UDA’s (Unidade Domiciliar Autônoma)

897,974 887,162 840,915 1.2% 6.8%

1,229,713 1,202,805 1,116,668 2.2% 10.1%

11,435 11,268 10,595 1.5% 7.9%

1,011 1,008 1,010 0.3% 0.1%

2 2 2 0.0% 0.0%

25 25 23 0.0% 8.7%

318 324 347 -1.9% -8.4%

910,765 899,789 852,892 1.22% 6.79%

1,242,504 1,215,432 1,128,645 2.2% 10.1%

1Q13 4Q12 1Q12 1Q13 x 1Q12

RESIDENTIAL

NUMBER OF UDA's*

COMMERCIAL

INDUSTRIAL

1Q13 x 4Q12

THERMAL GENERATION

COGENERATION

AUTOMOTIVE

TOTAL METERS

TOTAL CUSTOMERS

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Volume per Segment in thousands of m3

41,815 50,469 40,882 -17.1% 2.3%

25,793 28,274 26,196 -8.8% -1.5%

928,145 937,275 934,538 -1.0% -0.7%

82,659 89,344 86,034 -7.5% -3.9%

59,961 66,759 67,679 -10.2% -11.4%

1,138,373 1,172,121 1,155,329 -2.88% -1.47%

12.6 12.7 12.7

1,367,015 1,428,911 1,187,547 -4.33% 15.11%TOTAL

228,642 256,790 32,218 THERMAL GENERATION -11.0% 609.7%

COMMERCIAL

INDUSTRIAL

COGENERATION

AUTOMOTIVE

TOTAL

MMm³/day*

1Q13 x 1Q121Q13 x 4Q12

RESIDENTIAL

1Q13 4Q12 1Q12

75

129 122

1Q12 4Q12 1Q13

220258

314

1Q12 4Q12 1Q13

269 270 262

1Q12 4Q12 1Q13

110143

92

1Q12 4Q12 1Q13

22%

43%

-5%

63%

-3%

-3%

-36%

-16%

EBITDA

in million of R$

Normalized IFRS

Net Income

Financial Performance

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Current Account in million of R$

29 12

-55

-157

-230

-198

-128

-5

150

204

360 362 381

334

dec.09 mar.10 jun.10 sep.10 dec.10 mar.11 jun.11 sep.11 dec.11 mar-12 jun.12 sep.12 dec.12 mar.13

(1Q12) = +54

(1Q13) = -47

Investimentos

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Investments in million of R$

121

175

mar/12 mar/13

+44%

262300

mar/12 mar/13

Network Extension (in thousands of km)

São João da Boa Vista

Hortolândia

Monte Mor

Capivari

Taubaté

Piracicaba

Osasco II

Rio Claro

Main Projects

+15%

751

244 162 186 101 188

297

55 94 99 276 147

2013 2014 2015 2016 2017 2018 forward

Local Currency Foreign Currency

Estrutura de Endividamento

299 256 285

377 335

1,048

Debt Structure in thousands of R$

Debt Amortization Schedule (R$ mm) Debt Composition – Mar/13

*EBITDA considering the last 12 months

Short

Term40%

Long

Term60%

EIB20%

BNDES

41%

Others

38%

Debt Mar 13 Mar 12

Short Term Debt 1,048,314 708,298

Long Term Debt 1,551,233 1,437,644

Total Debt 2,599,547 2,145,942

(-) Cash 327,504 104,341

(=) Net Debt 2,272,044 2,041,601

EBITDA 1,057,385 744,082

Net Debt / EBITDA 2.15 2.74

Short Term Debt / Total Debt 0.40 0.33

INVESTOR RELATIONS

investidores@comgas.com.br

www.comgas.com.br/en/investors

ROBERTO LAGE CFO and

IRO

ANDRÉ SALGUEIRO Investor Relations

Manager

Rua Olimpíadas, nº 205, 9º floor - Vila Olímpia - CEP 04551-000 / São Paulo - SP - Brazil

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