Filed by: SUEZ

pursuant to Rule 165 and Rule 425(a)

under the Securities Act of 1933, as amended

Subject Company: SUEZ

Exchange Act File Number: 001-15232

Date: May 27, 2008

On May 24, 2008, Suez issued the following press release.

Important Information

This communication does not constitute an offer to purchase, sell, or exchange or the solicitation of an offer to sell, purchase, or exchange any securities of Suez, Suez Environment (or any company holding the Suez Environment Shares) or Gaz de France, nor shall there be any offer, solicitation, purchase, sale or exchange of securities in any jurisdiction (including the United States, Germany, Italy and Japan) in which such offer, solicitation, purchase, sale or exchange would be unlawful prior to the registration or qualification under the laws of such jurisdiction. The distribution of this communication may, in some countries, be restricted by law or regulation. Accordingly, persons who come into possession of this document should inform themselves of and observe these restrictions. To the fullest extent permitted by applicable law, Gaz de France and Suez disclaim any responsibility or liability for the violation of such restrictions by any person.

The Gaz de France ordinary shares which would be issued in connection with the proposed business combination to holders of Suez ordinary shares (including Suez ordinary shares represented by Suez American Depositary Shares) may not be offered or sold in the United States except pursuant to an effective registration statement under the United States Securities Act of 1933, as amended, or pursuant to a valid exemption from registration.

In connection with the proposed transactions, the required information document will be filed with the Autorité des marchés financiers (“AMF”) and, to the extent Gaz de France is required or otherwise decides to register the Gaz de France ordinary shares to be issued in connection with the business combination in the United States, Gaz de France may file with the United States Securities and Exchange Commission (“SEC”), a registration statement on Form F-4, which will include a prospectus. Investors are strongly advised to read the information document filed with the AMF, the registration statement and the prospectus, if and when available, and any other relevant documents filed with the SEC and/or the AMF, as well as any amendments and supplements to those documents, because they will contain important information. If and when filed, investors may obtain free copies of the registration statement, the prospectus as well as other relevant documents filed with the SEC, at the SEC’s web site at www.sec.gov and will receive information at an appropriate time on how to obtain these transaction-related documents for free from Gaz de France or its duly designated agent. Investors and holders of Suez securities may obtain free copies of documents filed with the AMF at the AMF’s website at www.amf-france.org or directly from Gaz de France on its web site at www.gazdefrance.com or directly from Suez on its website at www.suez.com, as the case may be.

Forward-Looking Statements

This communication contains forward-looking information and statements about Gaz de France, Suez, Suez Environment and their combined businesses after completion of the proposed transactions. Forward-looking statements are statements that are not historical facts. These statements include financial projections, synergies, cost-savings and estimates and their underlying assumptions, statements regarding plans, objectives, savings, expectations and benefits from the transaction and expectations with respect to future operations, products and services, and statements regarding future performance. Forward-looking statements are generally identified by the words “expect,” “anticipates,” “believes,” “intends,” “estimates” and similar expressions. Although the managements of Gaz de France and Suez believe that the expectations reflected in such forward-looking statements are reasonable, investors and holders of Gaz de France and Suez ordinary shares are cautioned that forward-looking information and statements are not guarantees of future performances and are subject to various risks and uncertainties, many of which are difficult to predict and

generally beyond the control of Gaz de France and Suez, that could cause actual results, developments, synergies, savings and benefits from the proposed transactions to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include those discussed or identified in the public filings with the Autorité des marchés financiers (“AMF”) made by Gaz de France and Suez, including those listed under “Facteurs de Risques” in the Document de Référence filed by Gaz de France with the AMF on May 15, 2008 (under no: R.08-0056) and any update thereto and in the Document de Référence filed by Suez on March 18, 2008 (under no: D.08-0122) and any update thereto, as well as documents filed by Suez with the SEC, including those listed under “Risk Factors” in the Annual Report on Form 20-F for 2006 that Suez filed with the SEC on June 29, 2007. Except as required by applicable law, neither Gaz de France nor Suez undertakes any obligation to update any forward-looking information or statements.

* * * *

Press Release

May 24th, 2008

Press Department

16 Rue de la Ville l'Evêque

75008 Paris FRANCE

00 33 1 40 06 66 51/68

SUEZ grants exclusivity to ENI

with a view on the sale of Distrigas

The disposal of the 57.25 % of Distrigas, the Belgian gas company owned by SUEZ, is one of the undertakings proposed by SUEZ and Gaz de France to the European Commission in the framework of their proposed merger.

The disposal process started in November 2007 and after several rounds, three potential industrial acquirers, EDF, ENI and EON, submitted their best firm offers on May 23.

As a result of this competitive process, SUEZ has decided to enter into an exclusivity agreement with ENI, having offered the highest price for Distrigas.

This period of exclusivity, which will last until May 29th, 2008, will enable ENI to undertake final confirmatory due diligence.

SUEZ and ENI should sign a definitive sale agreement by May 29th, 2008. The agreement will be conditional on the merger of SUEZ and Gaz de France, the pre-emption right of Publigas not being exercised and the approval of the European Commission.

At the same time, SUEZ has entered into negotiations with ENI regarding the acquisition of a number of energy assets, in line with its previous announcement .

Distrigas has been selling natural gas for more than 75 years to industry, natural gas resellers and electricity producers. Based in Belgium, at the intersection of the main European gas pipelines, Distrigas enjoys a strategic position and will therefore be able to further develop its Western European activities. In 2007, Distrigas reported a turn-over of 4.7 billion euros and total sales of 177 TWH.

SUEZ, an international industrial and services Group, designs sustainable and innovative solutions in the management of public utilities as a partner of public authorities, businesses and individuals. The Group aims to answer essential needs in electricity, natural gas, energy services, water and waste management. SUEZ is listed on the Brussels, Luxembourg, Paris and Zurich stock exchanges and is represented in the major international indices: CAC 40, BEL 20, DJ STOXX 50, DJ EURO STOXX 50, Euronext 100, FTSE Eurotop 100, MSCI Europe and ASPI Eurozone. The Group employs 149,000 people worldwide and achieved revenues of €47.5 billion in 2007, 89% of which were generated in Europe and in North America.

Important Information

This communication does not constitute an offer to purchase or exchange, or the solicitation of an offer to sell or exchange, any securities of SUEZ or Gaz de France, nor shall there be any purchase, sale or exchange of securities in any jurisdiction (including the United States, Germany, Italy and Japan) in which such offer, solicitation, purchase or sale or exchange would be unlawful prior to the registration or qualification under the laws of such jurisdiction. The distribution of this communication may, in some countries, be restricted by law or regulation. Accordingly, persons who come into possession of this document should inform themselves of and observe these restrictions. To the fullest extent permitted by applicable law, SUEZ disclaims any responsibility or liability for the violation of such restrictions by any person.

The Gaz de France ordinary shares which would be issued in connection with the proposed business combination set out in the communication to holders of SUEZ ordinary shares (including SUEZ ordinary shares represented by SUEZ American Depositary Shares) may not be offered or sold in the United States except pursuant to an effective registration statement under the United States Securities Act of 1933, as amended, or pursuant to a valid exemption from registration.

In connection with the proposed business combination, the required information documents will be filed with the Autorité des marchés financiers (“AMF”) and, if applicable, the United States Securities and Exchange Commission (“SEC”).

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Forward-Looking Statements

This communication contains forward-looking information and statements. These statements include financial projections, synergies, cost-savings and estimates and their underlying assumptions, statements regarding plans, objectives, savings, expectations and benefits from the transaction and expectations with respect to future operations, products and services, and statements regarding future performance. Although the management of SUEZ believes that the expectations reflected in such forward-looking statements are reasonable, investors and holders of SUEZ ordinary shares are cautioned that forward-looking information and statements are not guarantees of future performances and are subject to various risks and uncertainties, many of which are difficult to predict and generally beyond the control of SUEZ, that could cause actual results, developments, synergies, savings and benefits from the transaction to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include those discussed or identified in the public filings made by SUEZ with the AMF, including those listed under “Facteurs de Risques” in the Document de Référence filed by SUEZ on March 18, 2008. Except as required by applicable law, SUEZ does not undertake any obligation to update any forward-looking information or statements.

Press contacts:		Analysts contacts:
France :	+331 4006 6651 / 6668		+331 4006 6489
Belgium :	+32 2 510 76 70

This release is also available on the Internet: http://www.suez.com

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