To make people aware about environmental issues and as a symol for commitment to the planet, Earth Hour started as a call to turn all (non essential) lights off for an hour, one evening in March, each year.
It has since grown into a global environmental movement ‘beyond the hour’ that has achieved climate action and legislative changes across a broad range of environmental issues. It inspires people to use their power to change climate change.
More than 7 000 cities and towns worldwide are involved each year.
Note that it is not about saving electricity for that ONE hour. It is a symbolic event to raise consciousness on a broader range of issues. However, the one hour event remains the key driver of the movement.