Renewable Energy Sources – A resource which is not diminished when it is used; it recurs and cannot be exhausted (inexhaustible) Examples of renewable energy sources are wind, tidal and solar energy
I renewed because I was able to choose a different energy source (renewable energy source) which provided me with energy that wasn't depleted when used.
A way of memorising what renewable energy sources are is to remember what the opposite is, i.e what is non-renewable. Non-renewable energy sources are easier to remember. What cannot be renewed is coal, oil and gas.
Nuclear energy is usually considered to be a non-renewable energy source. This is because, although nuclear energy itself is renewable, the material used in nuclear power plants is not.