A method of producing electrical power for delivery on an electrical power supply grid includes (a) providing a combined heat and power plant generating heat and electrical power from one or more of biomass, fossil fuel, and nuclear fuel; (b) providing a fuel producing plant for generating a carbon-based fuel and/or a nitrogen-based fuel using electrical power from the combined heat and power plant and a combination of two or more materials selected from the group consisting of carbon dioxide, hydrogen, carbonaceous gasses, carbonaceous liquids, and nitrogen; (c) determining the need for electrical power on the electrical power supply grid and delivering needed electrical power on the grid; and (d) delivering any excess electrical power to the fuel producing plant.