There are various types of energy because there are various sources and forms of energy. Some types of energy include heat (thermal), light (radiant), electrical, chemical, mechanical,and nuclear energy. Energy can be broadly categorized into two types including potential energy and kinetic energy. Energy come from various sources and they can be categorized as renewable and non-renewable sources of energy. Renewable sources of energy include sun, wind, geothermal energy, ocean energy and biomass. On the other hand, non-renewable sources of energy include coal, oil etc.