EGCO categorizes its business into 3 groups, namely, power business, service business and water business.
Rayong Power Plant
Khanom Electricity Generating Co., Ltd.
BLCP Power Limited
Gulf Power Generation Co., Ltd.
EGCO Cogeneration Co., Ltd.
Roi-Et Green Co., Ltd.
Gulf Cogeneration Co., Ltd.
Nong Khae Cogeneration Co., Ltd.
Samutpakarn Cogeneration Co., Ltd.
Gulf Yala Green Co., Ltd.
Natural Energy Development Co., Ltd.
SPP4 Co., Ltd.
TJ Cogen Co., Ltd.
TP Cogen Co., Ltd.
SK Cogen Co., Ltd.
Nam Thuen 2 Power Co., Ltd.
Western Mindanao Power Corporation
Southern Phillipines Power Corporation
Quezon Power