NOVELTY - Generating energy involves providing a tank or well containing two columns of the same fluid. A chemical having a critical temperature less than that of the column fluid in a liquid phase is injected near the base of one column. The temperature of the well fluid is allowed to cause the chemical to change from the liquid phase to a gas phase. The gas is allowed to rise in the column to elevate the column of the fluid with the gas above the column of well fluid without the gas to create potential energy, and the energy is captured.    USE - Used for generating energy of falling water, for an electrical power generation system utilized for hydrogeneration, hydropower and hydroelectric power generation that are used in an electrical power industry.    ADVANTAGE - The method allows for the design of smaller, localized, electrical power generation facilities, providing an electrical power supply closer to the end user to reduce the line loss inherent in long power transmission systems and to reduce overall pollutants associated with the electrical power generation systems. The method significantly advances the reduction of greenhouse gases and other pollutants, and reduces capital expenditure for the design and construction of new power generation facilities, maintenance expenses as documented by comparative analysis of various schemes with hydroelectric power generation unit maintenance costs being orders of magnitude less than gas, nuclear, coal or others, and operational expenditures for personnel, fuel, insurance, and overhead required for contemporary power generation. The method reduces production loss of electrical energy by long distance transmission. The method provides an economical and environmentally compatible way to re-gasify liquidized natural gas, and provides a use for water heated in cooling certain refinery and heavy manufacturing operations and a way to cool the water for use in the operations.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a system for generating energy using a chemical which changes from liquid phase to gas phase.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view schematically representing an apparatus provided for the gaslifting of a fluid such as water.    Gas/water mixture separation vessel (22)    Gas compressor (24)    Heat exchanger (26)    Gas condenser (28)    Fluid liquid delivery tubular (30)    Upper reservoir (40)    Lower reservoir (42)    Hydrogeneration equipment (44)    Production column (52)    Closed well casing (55)