Prometheus Energy is one of the largest and fastest growing suppliers of liquefied natural gas (LNG) to the industrial sector in North America.Prometheus Energy is one of the largest and fastest growing suppliers of liquefied natural gas (LNG) to the industrial sector in North America. Prometheus provides turnkey fuel solutions to convert industrial users of diesel, propane and other crude-derived fuels to clean, domestic, secure LNG, resulting in reduced fuel cost and environmental footprint. The company is vertically integrated from LNG production through distribution, onsite storage, and vaporization. A pioneer in the industrial LNG market, Prometheus developed first-of-their-kind conversions of industrial fuel consumers to LNG in numerous sectors.Prometheus Energy is privately held by Shell Technology Ventures Fund 1 B.V. and Black River Asset Management LLC, a wholly owned but independently managed subsidiary of Cargill.