Additional energy

Additional energy is energy used to complement the production of principal energy when the latter becomes insufficient.

Use of additional energies

Additional energies are generally used to:

• compensate for renewable energy sources with intermittent production (solar, wind energy);
• meet exceptional energy demands (consumption peaks);
• meet specific needs (e.g.: electric towel rails with gas fired central heating).

Wood stoves (pellets fired, for example) are very common and are a form of additional energy.