Billionaire Warren Buffett says the electric utility energy arm of his conglomerate Berkshire Hathaway has a “huge appetite” for both wind and solar energy projects, hinting that its heavy investment in both sectors will continue next decade.

He told the company’s annual meeting in Omaha on Saturday that he’d be “surprised if 10 years from now” Berkshire Hathaway Energy (BHE) doesn’t have significantly more money in not only wind and solar,” but also ownership of more “utility systems than we own now.”