General Motors on Wednesday said it plans to expand its hydrogen fuel cell business beyond vehicles by supplying hydrogen-powered generators for uses including at construction sites, music festivals, data centers and the military. The wider application of hydrogen fuel cells will allow GM to leverage and scale existing hydrogen investments and refine the technology, GM executives said. “Think of places where you don’t have a permanent installation for power generation, but you need clean power sources,” Charlie Freese, executive director of GM’s Hydrotec business, said on a call with journalists. The company declined to say what revenue it expects from the new business, and said an availability date and price for the generators would be announced at a later time. The hydrogen fuel-cell systems will be assembled by GM’s joint venture with Honda in Brownstown, Michigan. Utah-based Renewable Innovations will build the generators, with production slated to start next year, …