MTU Friedrichshafen
Manufacturers of gas engines include Hyundai Heavy Industries, Rolls-Royce with the Bergen-Engines AS, Kawasaki Heavy Industries, Liebherr, MTU Friedrichshafen, GE Jenbacher, Caterpillar Inc., Perkins Engines, MWM, Cummins, Wärtsilä, GE Energy Waukesha, Guascor Power, Deutz, MTU, MAN, Fairbanks-Morse, Doosan, and Yanmar. Output ranges from about micro combined heat and power (CHP) to . Generally speaking, the modern high-speed gas engine is very competitive with gas turbines up to about depending on circumstances, and the best ones are much more fuel efficient than the gas turbines. Rolls-Royce with the Bergen Engines, Caterpillar and many other manufacturers base their products on a Diesel engine block and crankshaft. GE Jenbacher and Waukesha are the only two companies whose engines are designed and dedicated to gas alone.