Power plants

Primary energy

In the energy industry, the term “primary energy” refers to the energy form or energy source as found in nature that is available for conversion into electrical energy. Examples of the primary energy sources used in conventional power plants are fuels such as coal and natural gas as well as renewables such as sun, wind and water. Primary energy is transformed into secondary energy in a conversion process that results in a loss of energy. Transmission results in further losses before the end-use energy reaches the consumer.