coal:coal has lots of chemical potential energy and is burnt to release heat energy.
wind:wind turbines use kinetic energy of the wind to spin a turbine.
hydro:dams can be used to transform gravitational energy,
oil:non renewable
wind:renewable
coal:non renewable
hydro:renewable
waves:renewable
gas:Non renewable
petrol:non renewable
grass/plants:renewable
generating electrical energy
once again;generating electrical always comes back to energy transformation.
some form of energy us captured and transformed.
usually this energy is transformed into kinetic energy energy by spinning a turbine