President and chief executive Chanin Chaonirattisai said the deals were done through its subsidiaries, Start Energy Group Holdings Pte. Ltd and AC Energy Holdings Inc, which acquired the stake in the two plants from a Chevron affiliate.
The Salak and Darajat geothermal power plants are located in West Java and are composed of several geothermal steam and electricity generating units. The plants have an aggregate capacity of 402 megawatts from electricity and 235 MW equivalent from steam, respectively.
The plants have long-term energy sales contracts with PT PLN, the Indonesian state-owned electricity corporation.