Welcome to the Earth Hour global community!

According to the International Energy Agency, the power sector is responsible for 37% of the CO2 equivalent emissions worldwide. For appliances, electronics, and lighting - making up around one third of this sector - the energy efficiency savings potential is roughly 50 per cent. WWF supports Topten, an international network promoting clean technologies and energy efficient appliances, and cars . Currently, seventeen European countries, China and the USA are part of Topten.