There are a number of different ways in which energy can be stored. Energy can be transferred from one to another by working and heating.
Some examples of everyday energy stores are:
- gravitational potential ‐ the energy stored in water at the top of a mountain is used for
- kinetic ‐ the energy stored in a flywheel is used as an alternative to traditional batteries in a hybrid car
- thermal ‐ the energy stored in the concrete blocks of a night storage heater is released during the day
- nuclear ‐ the energy stored in the nucleus of an atom of uranium is released when the atom undergoes nuclear fission
- chemical ‐ the energy stored in the chemicals of a battery or in the fuel at a power station is transferred as an electric current to do work on domestic appliances