Basic principles of energy conversion -- Thermodynamic engine cycles -- Direct thermoelectric conversion -- Engine conversion of solar energy -- Heat pumps geothermal and ocean-thermal energy conversion -- Basic description of flow-driven converters -- Propeller-type converters -- Cross-wind and other alternative converter concepts -- Hydro and tidal energy conversion -- Magneto hydrodynamic converters -- Wave energy converters -- Photovoltaic conversion -- Photo-electrochemical conversion -- Solar thermal conversion -- Solar thermal conversion -- Solar thermal electricity generators -- Solar cooling and other application -- Fuel cells -- Other electrochemical energy conversion -- Combustion -- Biological conversion into gaseous fuels -- Biological conversion into liquid fuels -- Thermochemical conversion into gaseous and other fuels -- Heat transmission -- Power transmission -- Fuel transmission -- Heat capacity storage -- Latent heat and chemical transformation storage -- Pumped hydro storage -- Flywheels -- Compressed gas storage -- Battery storage -- Other storage forms.