NOVELTY - Conversion of renewable energy source electricity and hydrocarbon feedstock into a liquid fuel comprises providing varying amounts of electricity from source of renewable electrical energy to power an air separation unit; providing hydrocarbon feedstock to a synthesis gas generation unit; causing partial oxidation reactions in synthesis gas generation unit in a process that converts hydrocarbon feedstock into synthesis gas; converting the synthesis gas into a liquid fuel; and adjusting the liquid fuel production level to a desired level when amount of renewable source electricity is reduced.    USE - The method is for converting renewable energy source electricity provided as wind or solar power and hydrocarbon feedstock provided as municipal waste, into a liquid fuel (claimed) including methanol, synthetic diesel, ethanol, and/or aviation fuel. The hydrocarbon-based feedstocks include industrial waste, biomass, coal, and natural gas.    ADVANTAGE - The cost of electricity used in the hydrocarbon to liquid fuel conversion facility is reduced by co-locating the facility at a wind or solar energy farm. The electricity cost is minimized by using surplus wind or solar electricity that can not be accommodated by a downstream load or by the electrical transmission system. The method can both reduce the cost of producing liquid fuels from hydrocarbon feedstocks and decrease CO2 emissions. It accommodates the variable nature of renewable electricity by optimal use of additional electricity sources and oxygen storage. The use of renewable electricity reduces the amount of greenhouse gas that is generated in the production of fuels. The amount of landfill gas based electricity can be controlled when used in combination with electricity from the grid to minimize the overall electricity cost for the liquid fuel from waste conversion facility by using a larger relative amount of electricity from the grid at times when it is available at a lower price.    DETAILED DESCRIPTION - Conversion of renewable energy source electricity and hydrocarbon feedstock into a liquid fuel comprises providing a source of renewable electrical energy; providing a synthesis gas generation unit in electrical communication with the source of renewable electrical energy; providing an air separation unit in communication with the synthesis gas generation unit; providing varying amounts of electricity from the source of renewable electrical energy to power the air separation unit; providing oxygen from the air separation unit to the synthesis gas generation unit; providing hydrocarbon feedstock to the synthesis gas generation unit; causing partial oxidation reactions in the synthesis gas generation unit in a process that converts the hydrocarbon feedstock into synthesis gas; converting the synthesis gas into a liquid fuel; and adjusting the liquid fuel production level to a desired level when the amount of renewable source electricity is reduced.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram showing a system for pyrolytic conversion of hydrocarbon feedstocks to liquid fuels, where system produces hydrogen by bubbling the hydrocarbon feedstock through a molten material and hydrogen is then reacted with carbon dioxide to produce liquid fuel.