Abstract: A method is disclosed for accelerating growth of plants in a controlled environment, such as a greenhouse or an algae pond. The method comprises reversibly adsorbing carbon dioxide from a carbon dioxide containing gas, such as ambient air or a flue gas; desorbing the adsorbed carbon dioxide; and releasing the desorbed carbon dioxide into the controlled environment. In a preferred embodiment water vapor is also adsorbed from the carbon dioxide containing gas and recovered as liquid water. The liquid water can be used in the plant growing process.

Abstract: A system is disclosed for energy supply and storage. The system is self-contained. It comprises a means for generating solar electric power. Electric power can be converted to a liquid fuel, such as methanol, in a reversible liquid fuel cell. The liquid fuel is stored. When demand for electric power exceeds the supply of solar power, electric power is generated in the liquid fuel cell using stored liquid fuel.