Hydroplane has installed a prototype of its hydrogen-electric powerplant in a Piper Cherokee. Credit: Hydroplane U.S. startup Hydroplane is working with Enstrom Helicopter and uncrewed cargo aircraft ...

Water leaking into an aging and shuttered city hydro-electric generating facility at the O'Shaughnessy Dam, near the Columbus Zoo and Aquarium and other construction issues have put a city project to ...

A multibillion-dollar hydroelectric project that would reshape a mountaintop in northeastern Alabama found a receptive audience Thursday night – including from two residents who stand to lose property ...