Japanese natural gas company Tokyo Gas Co. Ltd has made a bet that the future of renewable power will be floating at sea. The more than $22 million investment in developers of floating platforms for wind turbines Principle Power Inc. is a sign that fossil fuel companies are continuing to invest to prepare their businesses for a low-carbon future. Tokyo Gas joins existing shareholders including EDP – Energias de Portugal SA, Repsol SA and Aker Solutions ASA.

“It shows that this is not a fly by night sector,” Joao Metelo, Principle Power’s Chief Executive Officer said. “It’s here to stay and floating wind presents a great opportunity.”

Technology that allows wind farms to float could vastly increase the reach of offshore wind farms, one of the most efficient forms of renewable energy. Potential major markets like Japan, South Korea and the west coast of the U.S. have seabed that is too deep for conventional offshore wind turbines that sit atop large underwater structures fixed to the seabed.

The investment from Tokyo Gas will help Principle Power advance into markets in Asia as well as scale-up to industrialize its production process to prepare for utility-scale floating wind farms, Metelo said.