NOVELTY - Method for providing energy supply using renewable energy source involves: providing first source of renewable energy (100), where first source of renewable energy is intermittent or does not provide sufficient amount of energy; providing energy from first source of renewable energy to electrolyzer to produce energy carrier through electrolysis; selectably reversing electrolyzer for use as fuel cell; and providing energy carrier to electrolyzer for production of energy.    USE - For providing energy supply using renewable energy source (claimed).    ADVANTAGE - The method for providing energy supply using renewable energy source provides sustainable economic development through integrated full spectrum production of renewable energy, which can include use of electrochemical or electrolytic cell, and its use for separated production of gases, including pressurized hydrogen and oxygen, that tolerates impurities and products of operation and is reversible, to address problem(s) with current methods. Production of hydrogen with reduced energy expenditure is particularly advantageous for improving economics of hydrogen extraction from energy crops and organic feedstocks including wastes. The method greatly increases storage efficiency, net electricity and/or fuel energy conversion capacity, rate, and efficiency as measured by total amount of electricity, hydrogen and/or methane fuel and/or hydrocarbon production. Production of electricity, particularly peak power to meet quickly developing demands is readily provided by utilization of hydrogen and/or methane as fuel for piston, rotary or turbine ICE engine(s). In each instance it is of great advantage to utilize heat rejected by such engines to improve overall energy utilization efficiency by increasing temperature of expansive gas to drive motor-generators and to deliver heat for agricultural, industrial, or domestic applications such as combined heat and power applications shown. It is also advantageous to provide heat gain from natural geothermal sources and/or from subterranean heat storage and exchange at depth of heat exchanger. Because dissociation process is endothermic, it is advantageous to add solar energy and/or waste heat from other processes. Such heat addition is particularly advantageous if it elevates temperature of electrolysis because it reduces amount of Gibbs free energy that must be provided as electrical work. The storage of energy as potential energy of various forms such as thermal, chemical, pressure, and height in suitable geological formation can provide numerous advantages including interaction with formation to increase temperature, pressure, and chemical potential of stored substances. This enables energy conversion system that subjects more substance(s) of fluid to geological formation for purposes including storage of chemical potential energy, storage of pressure potential energy, storage of chemical and pressure potential energy, heat transfer from formation to such fluid, transfer of substances from formation to such fluid, and production of substances from formation as result of presence of fluid.    DETAILED DESCRIPTION - Method for providing energy supply using renewable energy source involves: providing first source of renewable energy (100), where first source of renewable energy is intermittent or does not provide sufficient amount of energy; providing energy from first source of renewable energy to electrolyzer to produce energy carrier through electrolysis; selectably reversing electrolyzer for use as fuel cell; and providing energy carrier to electrolyzer for production of energy. The first source of renewable energy is selected from solar, wind, moving water, organic or geothermal sources of energy (preferably first source of renewable energy is solar energy and steps of reversing electrolyzer for use as fuel cell and providing energy carrier to electrolyzer for production of energy are performed when first source of renewable energy is not sufficiently available). Further, first heat source is selected from geothermal, solar, or other heat engine; and first heat source comprises second source of renewable energy (preferably second source of renewable energy comprises geological formation). The energy carrier comprises hydrogen, carbon-based material, or nitrogen-based material. The first source of renewable energy, electrolyzer or energy carrier receives supplemental heat from first heat source. The method further involves storing energy carrier prior to providing energy carrier to electrolyzer, by storing energy carrier in geological formation, which further involves energy carrier receiving supplemental heat from geological formation. The method further involves providing expander configured to capture work from expansion, where expander is coupled to electrolyzer or energy carrier storage; providing energy carrier to expander under pressure; and capturing work from expansion of energy carrier. The energy carrier storage transfers heat to energy carrier prior to capturing work from expansion of energy carrier. The energy carrier storage comprises geological formation. The energy value of energy carrier is increased during energy carrier storage, by adding heat to energy carrier from geological formation; or by adding hydrocarbons or other compounds having energy value to energy carrier flushed from geological formation. The method further involves providing source of organic materials (preferably biomass or biowaste) (300) to electrolyzer for electrolysis of organic materials.    DESCRIPTION OF DRAWING(S) - The figure shows block diagram illustrating system of integrated energy, agribusiness and industrial sustainable economic development.    Full spectrum integrated production system/first source of renewable energy (100)    Full spectrum energy park for renewable energy production and materials resource extraction including electrolyzer (200)    Full spectrum agribusiness network for renewable nutrient regimes and energy feedstock production (300)    Full spectrum industrial park for sustainable materials resource production and zero emissions manufacturing (400)