HOUSTON--(BUSINESS WIRE)--Waste Management, Inc. (NYSE:WM), Ventech Engineers International LLC, NRG Energy, Inc. (NYSE: NRG) and Velocys plc (LSE:VLS) today announced the formation of a joint venture to produce renewable fuels and chemicals from biogas and natural gas using smaller-scale gas-to-liquids (“GTL”) technology. The joint venture, comprised of WM Organic Growth, Inc., NRG GTL Holdings, LLC, VPI LF-GTL, LLC, and Velocys, Inc., brings together the right parties, the right assets and th