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Founded on March 7, 2000, the Company is currently registered with Baht 14,500 million paid-up capitals. Its business is to invest in subsidiaries and joint venture companies as a holding company. Its revenues come mainly from dividends of its joint venture and subsidiaries. At present, the Company owns 99.99 per cent shares of its seven subsidiaries as follows:
| 1. |
Ratchaburi Electricity Generating Company Limited. |
| 2. |
Ratchaburi Energy Company Limited. |
| 3. |
Ratchaburi Gas Company Limited, which holds 50 per cent in Tri Energy Company Limited. |
| 4. |
Ratch Udom Power Company Limited, which holds 99.99 per cent stake in Ratchaburi Alliances Company Limited. |
| 5. |
Ratchaburi Alliances Company Limited, which holds 25 per cent stake in Ratchaburi Power Company Limited. |
| 6. |
RATCH-LAO Services Company Limited |
| 7. |
RH International Corporation Limited |
Ratchaburi Electricity Generating Holding Public Company Limited also directly invests in six associated affiliated companies as follows:
| 1. |
Holding 33.33 per cent in South East Asia Energy Company Limited which holds 75 per cent stake in Nam Ngum Electricity 2 Power Company Limited |
| 2. |
Holding 49.99 per cent stake in Chubu Ratchaburi Electric Services Company Limited |
| 3. |
Holding 40 per cent stake in Hongsa Power Company Limited |
| 4. |
Holding 37.50 per cent stake in Phu Fai Mining Company Limited |
| 5. |
Holding 30 per cent stake in Sustainable Energy Corporation Company Limited |
| 6. |
Holding 10 per cent stake in EGAT Diamond Service Company Limited |
The Company has formulated its strategies and business plans that correspond to its development and expansion goals focusing on investment in the power sector and other related business where it provides adequate seed money for investment and actively participating in the formulation and monitoring of the operations of the companies it has invested in.
Subsidiaries

Ratchaburi Electricity Generating Company Limited
| Location : |
128 Moo 6, Phikunikulthong Subdistrict, Muang District, Ratchaburi, 70000 Thailand
Tel. (66)0 2978 5111-9, 0 3236 5740 0 3236 5740 ext 3210
Fax. (66)0 2978 5110, 0 3236 5740 ext 3204 |
| Nature of business : |
Electricity generation |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 18,275 million |
| Paid registered capital : |
Baht 18,275 million |
| Status : |
Supervises the operations of Ratchaburi Power Plant. The plant comprises two units of thermal power plants, each of which has 720 735 megawatts production generating capacity, and three units blocks of Combined -Cycle power plants, each with 680 725 megawatts production generating capacity. Total production generating capacity is 3,481 645 megawatts. The Company has a 25-year Power Purchase Agreement (PPA) with the EGAT and has started commercial electricity salesoperations date (COD) since October 2000.
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Ratchaburi Gas Company Limited
| Location : |
555/1, Energy Complex, Building A, 7th Floor,
Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Tel. 0 2978 5000 0 2978 5000 Fax. 0 2978 5200 |
| Nature of business : |
Investing in electricity generating business |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 500 million |
| Paid registered capital : |
Baht 500 million |
| Status : |
Holds 50 per cent stake in Tri Energy Company Limited, whose 350 megawatts of total 700 megawatts production generating capacity are for the Company.
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Ratch Udom Power Company Limited
| Location : |
555/1, Energy Complex, Building A, 7th Floor,
Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Tel. 0 2978 5000 0 2978 5000 Fax. 0 2978 5200 |
| Nature of business : |
Investing in electricity generating business |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 420.90 million |
| Paid registered capital : |
Baht 420.90 million |
| Status : |
Holds 99.99 per cent in Ratchaburi Alliances Company Limited’s shares.
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Ratchaburi Alliances Company Limited
| Location : |
555/1, Energy Complex, Building A, 7th Floor,
Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Tel. 0 2978 5000 0 2978 5000 Fax. 0 2978 5200 |
| Nature of business : |
Investing in electricity generating business |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 420.20 million |
| Paid registered capital : |
Baht 420.20 million |
| Status : |
Holds 25 per cent in Ratchaburi Power Company Limited, whose 350 megawatts of its total 1,400 megawatts production generating capacity are for the Company.
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Ratchaburi Energy Company Limited
| Location : |
555/1, Energy Complex, Building A, 7th Floor,
Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Tel. 0 2978 5000 0 2978 5000 Fax. 0 2978 5200 |
| Nature of business : |
Investing in renewable-energy power generating business and in related businesses |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 640 million |
| Paid registered capital : |
Baht 265 million |
| Status : |
Oversees the operations of a new electricity generating project using natural associated gas which is by-product of oil refining from Pradu Thao-A Field rig, located in Baan Tham Mai Krai, Kong Subdistrict, Kong Krailat District, Sukhothai pProvince, with 1.75 megawatts production generating capacity. The project is supported by the Natural Fuel Resources Department, Ministry of Energy. It starts production operation in June 2007.Moreover, Ratchaburi Energy Company Limited also invests Sustainable Energy Corporation Company Limited, a developer of wind power project in Phetchabun, by 30 per cent stake.
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RATCH-LAO Services Company Limited
| Location : |
No. 13 Unit 01 Ban Nongsangthor, Xaysetha District, Vientiane, Lao PDR |
| Nature of business : |
Performing operation and maintenance tasks, making investments and other activities that relate to the Company’s projects in Lao PDR |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
USD 500,000 |
| Paid registered capital : |
USD 100,000 |
| Status : |
RATCH-LAO Services signed operation and maintenance agreement for Nam Ngum 2’s Hydro Power Plant with Nam Ngum 2 Power Co., Ltd., which the validity contract is 27-year and total transaction value is 4,700 million baht. In order that RATCH-LAO Services signed subcontract agreement with Electricity Generating Authority of Thailand (EGAT) in purpose of performing operation and maintenance tasks.
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RH International Corporation Limited
| Location : |
555/1, Energy Complex, Building A, 7th Floor,
Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900 Thailand
Tel. 0 2794 9999 0 2794 9999 Fax. 0 2936 4000 |
| Nature of business : |
Investing in electricity generating business in aboard |
| Shareholding Equity : |
99.99 percent |
| Registered capital : |
Baht 5 million |
| Paid registered capital : |
Baht 1.25 million |
| Status : |
Established on October 28, 2009, RH International Corporation Limited mainly focuses on foreign investments regarding the power generation industry.
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Affiliated Companies

Tri Energy Company Limited
| Location : |
1550 Thanaphum Tower, 16th Fl, New Petchburi Road,
Makkasan, Ratchatavee, Bangkok 10320 Thailand
Tel. 0 (66) 2207 0307-14
Fax. 0 (66) 2207 0315-16 |
| Nature of business : |
Electricity generation |
| Shareholding Equity : |
50 percent held by Ratchaburi Gas Company Limited |
| Registered capital : |
Baht 4,100 million |
| Paid registered capital : |
Baht 3,423.80 million |
| Status : |
Located in Ratchaburi province, Tri Energy electricity generating Power pPlant operates one unit block of Combined -Cycle Power Plant with 700 megawatts production generating capacity, and has a 20-year Power Purchase AgreementPPA with EGAT. The company started commercially selling inCODcommercial operations since July 2000. Its shareholders are Chevron Thailand Energy Company 1 and Ratchaburi Gas Company Limited which holds 50 per cent of its shares each.
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Ratchaburi Power Company Limited
| Location : |
1828 Sukhumvit Road, Bang Chak, Pra Khanong, Bangkok Thailand
Tel. 0 (66) 2344 5111
Fax. 0 (66) 2332 3882 |
| Nature of business : |
Electricity generation |
| Shareholding Equity : |
25 percent held by Ratchaburi Alliances Company Limited |
| Registered capital : |
Baht 7,325 million |
| Paid registered capital : |
Baht 7,325 million |
| Status : |
Overseeas the operations of the Ratchaburi Power pPlant which is located in the same premise of Ratchaburi Electricity Generating pPlant, Ratchaburi pProvince. It has a long-term Purchasing Power AgreementPPA for 25 years. The company has two blocks of Combined -Cycle power plant, each of which generates 700 megawatts. The first block has begun its commercial operations in March 2008 and the second block in June 2008. Ratchaburi Power Company Limited’s shareholders consist of Hong Kong Electric International Power (Mauritius) Limited which holds 25 per cent of its shares, Chubu Electric Power Company International B.V. holding 15 per cent, PTT Public Company Limited holding 15 per cent, Union Energy Company Limited holding 10 per cent of its shares, Toyota Tsusho Corporation holding 10 per cent shares, and Ratchaburi Alliances Company Limited holding 25 per cent.
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SouthEast Asia Energy Limited
| Location : |
587 Viriyathavorn Bldg, 20th Fl, Sutthisarn Vinijchai Road,
Din Daeng, Din Daeng, Bangkok 10400 Thailand
Tel. 0 (66) 2275 4873
Fax. 0 (66) 2691 8307 |
| Nature of business : |
Investing in electricity generating business in Laos PDR |
| Shareholding Equity : |
33.33 percent |
| Registered capital : |
Baht 6,606.75 million |
| Paid registered capital : |
Baht 4,132.52 million |
| Status : |
SouthEast Asia Energy Limited holds 75 percent stake in Nam Ngum Electricity 2 Power Company Limited in Laos PDR. Its total production generating capacity is 615 megawatts and its production generating capacity accounts for 153.75 megawatts of the Company’s total production generating capacity. Its shareholders include Ch. Kanchang Public Company Limited holding 38 percent of its shares, Bangkok Expressway Public Company Limited holding 16.67 percent, while P.T. Construction & Irrigation holding 5.33 percent, Shalapak Development Company holding 5.33 percent, Team Consulting and Management Company Limited holding 1.34 percent and the Company holding 33.33 percent.
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Nam Ngum 2 Electricity Power Company Limited
| Location : |
Laos PDR
Tel. (007) 856 21 223 215
Fax. (007) 856 21 21 5500 |
| Nature of business : |
Electricity generating |
| Shareholding Equity : |
75 percent owned by SouthEast Energy Company Limited |
| Registered capital : |
Baht 8,809 million |
| Paid registered capital : |
Baht 5,148.67 million |
| Status : |
Operating Nam Ngum 2 Hydroelectric Power Plant, with 615 megawatts production generating capacity in Laos PDR. Nam Ngum 2 Electricity Power Company Limited signed a long-term power purchase agreementPPA with EGAT for 27 years from the initial operation date (IOD) and expected to commercially sell electricitystart commercial operations COD in 2013. Its shareholders include SouthEast Asia Energy and Lao PDR holding 75 and 25 percent respectively.
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Chubu Ratchaburi Electric Services Company Limited
| Location : |
128 Moo 6, Pikulthong Phikunthong Subdistrict, Muang District,
Ratchaburi 70000 Thailand
Tel. 0 2978 5180 0 2978 5180 , 0 3236 5740 0 3236 5740 ext 3210
Fax. 0 2978 5126, 0 3236 5740 ext 3204 |
| Nature of business : |
Operate and maintain power plants |
| Shareholding Equity : |
49.99 percent |
| Registered capital : |
Baht 40 million |
| Paid registered capital : |
Baht 20 million |
| Status : |
Chubu Ratchaburi Electric Services Company Limited signed a deal to run and maintain power plants for the Operation and Maintenance Agreement with Ratchaburi Power Company Limited (“RPCL”) for a total period of 14 years, effective from since the commercial operations of RPCL’s plants in June 2008 from initial operation date-IOD, and to maintain power plants for Ratchaburi Power Company Limited. Its major shareholders are Chubu Electric Power (Thailand) Company Limited and the Company, which holds 49.99 percent each, and other minor shareholders holding 0.02 percent stake in the company.
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Hongsa Power Company Limited
| Location : |
Lao PDR |
| Nature of business : |
Electricity Generation by coal mine |
| Shareholding Equity : |
40 percent |
| Registered capital : |
USD 100,000 |
| Paid registered capital : |
USD 100,000 |
| Status : |
Hongsa Power Company Limited was set for the electricity generation concession from Lao PDR. in order to develop Hongsa Thermal Power Plant project, which is expected to start the commercial operation in 2015.
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Phu Fai Mining Company Limited
| Location : |
Lao PDR |
| Nature of business : |
Coal Mining |
| Shareholding Equity : |
37.50 percent |
| Registered capital : |
USD 50,000 |
| Paid registered capital : |
USD 50,000 |
| Status : |
Phu Fai Mining Company Limited was set for the lignite mining concession in Lao PDR, which will supply lignite for power generation in Hongsa Thermal Power Plant.
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Sustainable Energy Corporation Company Limited
| Location : |
199 Soi Soon Vi Jai, New Phetchaburi Rd.,
Bangkapi, Huaykwang, Bangkok |
| Nature of business : |
Electricity Generation by sustainable energy |
| Shareholding Equity : |
30 percent |
| Registered capital : |
Baht 300 million |
| Paid registered capital : |
Baht 75 million |
| Status : |
Wind Power Project in Phetchabun has its total installed capacity of 60 megawatts operating as a wind farm. At present, the project is under progress of construction plan and expected to start its commercial operation date in 2011 as scheduled. So it is considering as the nation first wind power project developed by Independent Power Producers. The shareholding structure of Sustainable Energy Corporation Co., Ltd. comprising 60% stake holding from Wind Energy Holding Co., Ltd., 30% stake from Ratchaburi Energy Company Limited and another 10% stake from individual shareholders.
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EGAT Diamond Service Company Limited
| Nature of business : |
Repair and Maintenance Service |
| Shareholding Equity : |
10 percent |
| Project Value : |
Baht 830 million |
| Status : |
EGAT Diamond Service Company Limited was set to provide repair and maintenance services for Hot Gas Path Parts in support of power generation in Thailand, aiming to strengthen the Thai power industry.
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