# Bury the garbage. Let it decompose. It will generate methane gas. Capture the methane and use it to run an engine or gas turbine. Use the engine or turbine to turn the generator. # If the garbage is wood, grass, or other material that can be burned, then burn it. Use the heat to boil water into steam in a boiler. Use the steam to turn a steam turbine. Use the steam turbine to turn the generator. Both of these methods (and there are more) are already used world-wide to generate power.