APR Energy has extended its 102MW project in Myanmar through next year.
The deal was one the first agreed in the area after sanctions were lifted.
The Kyaukse power plant is located south of Mandalay, the second-largest city in a country where nearly 42 million people are without access to electricity.
The development provides enough power for up to 6,000 people.
“We are excited by the continued opportunity to help power the development of one of Southeast Asia’s fast-growing economies,” said Laurence Anderson, chief executive.
“As the first US power company to do business in Myanmar in recent years, we have been fortunate to have exceptional business partners in Myanma Electric Power Enterprise and the national government. They have been fully committed to the success of this project and the role it is playing to enhance the quality of life for people in Myanmar.”
Earlier this year, APR Energy installed an additional 20MW to help offset the reduction of hydropower during the annual dry season in spring.