Investment in Thai Renewable Projects

No. EGCO 110/325 Date: August 3, 2009 Attn: President of the Stock Exchange of Thailand Subject: Investment in Thai Renewable Projects The Electricity Generating Public Company Limited ("EGCO") would like to inform the Stock Exchange of Thailand that EGCO, on July 30, 2009, joined the investment with CLP Thailand Renewables Limited ("CLP") and Diamond Generating Asia, Limited ("DGM") by acquiring newly issued shares in the Natural Energy Development Co., Ltd., ("NED") a company which is dedicated to development of renewable energy projects in Thailand. Each of the parties will hold equal 33.33% shares in NED. This investment is approved by the Executive Committee in the Meeting No.7/2009, held on July 9, 2009. The details of the transaction are as follows: July 30, 2009 1. Transfer Date 2. General Feature of the Transaction Purchase of ordinary shares of NED 3. Number of Shares 800,000 shares, equivalent to 33.33 per cent of NED registered capital. 4. Share's Price 10 baht per share 5. Value of Transaction 8,000,000 baht 6. Shareholding Structure after the Accomplishment of the Transaction NED, the developer of the renewable projects, has the registered capital of 24 million baht which is divided into 2,400,000 million ordinary shares valuing 10 baht each. The shareholders' structure is as follows. 1. EGCO 33.33% 2. CLP Thailand Renewables Limited ("CLP") 33.33% 3. Diamond Generating Asia, Limited 33.33% NED is currently pursuing a number of wind and solar energy opportunities in Thailand. Through date, NED has obtained the Power Purchase Agreements with the Provincial Electricity Authority for 13.5 MW of wind energy and 8 MW of solar energy. NED continues to develop these projects to achieve successful financial close and commercial operation.EGCO will inform the Stock Exchange of Thailand if there is any significant progress milestone on these projects. 7. Benefit from Investment This investment is in line with EGCO's business plan to invest in renewable energy which will foster growth and provide portfolio diversity and long-term value prospects. In addition,it will help promote fuel diversification in line with the government's policy for clean and sustainable energy development. Please be informed accordingly. Yours sincerely, Vinit Tangnoi President Corporate Secretary Division Tel. 0 2998 5020-4