Fuel cells, especially hydrogen types, offer a promising clean alternative with high energy density and rapid refueling, but their slow dynamic response necessitates integration with lithium batteries (energy storage) and supercapacitors (power storage). . FuelCell Energy is an American clean technology and manufacturing company providing large-scale, always-on, power solutions and emissions management. If playback doesn't begin shortly, try restarting your device. An error occurred while retrieving sharing information. Trigeneration with biogas is carbon neutral and can even be carbon negative. Our solid oxide platform has. .