Gunkul Engineering plans to invest more than Bt12 billion over the next two years to develop wind-power plants in Thailand and gas-powered plants in Myanmar.
This is part of the company's strategy to transform itself from an importer and provider of electrical equipment into a power producer in Asean.
It aims to be producing at least 300 megawatts of electricity from both alternative energy and gas in Thailand and Myanmar by 2016, chairman Gunkul Dhumrongpiyawut told a news conference at its plant in Yangon this weekend.
The company is also looking into developing a solar power plant in Japan in a joint venture with Thailand's largest energy firm this year, who also plans to expand the investment in Japan too.
"We cannot reveal more details about the investment in Japan now but it will be finalised in the first half of this year," he said.