News from the Directorate-General for Energy

Energy balance (sankey flow)

Why don't photovoltaic solar panels work at night?

Photovoltaic solar panels cannot operate at night because the sun does not shine at this time (no light = no solar electricity pr…

What does Wc mean in photovoltaics?

The peak watt is a unit representing the maximum electrical power delivered by a solar electrical installation for a standard sun…

What conditions must the roof of my house meet in order to carry out a photovoltaic installation?

Five (05) elements are decisive for photovoltaics: the orientation and nature of your roof, its slope, your location, the complex…

Do I need permission to install solar panels in my home?

Depending on the power of your installations, you may or may not need a permit or a prior declaration by contacting the decentral…

Are all renewables clean energy?

The effects of renewable energies on the environment are analysed during the five phases of their life cycle: construction, trans…

What is the difference between clean energy and renewable energy?

Renewable energy is characterized by its ability to replenish itself (e.g. water, solar, wind, etc.) on a human life scale, while…

What is clean energy?

Clean energy (green energy) is a source of energy whose exploitation produces only negligible amounts of pollutants with a low im…

What is Renewable Energy?

Energy sources that are renewed naturally or through the intervention of human action, in particular solar, wind and hydraulic en…