Could we power the world with solar energy alone?
More energy from the Sun hits the world in a single hour than humanity uses in an entire year, so yes, we could theoretically power the whole world with solar energy alone. However, we’d first need to make some changes and build new infrastructure. We’d need better batteries to store power, so solar could be used in vehicles and when the Sun wasn’t shining. New electricity lines would also be needed to carry power from sunny places to dark places. Experts estimate that we’d need between 100,000 and 500,000 square kilometres of solar panels (the latter being an area as big as Spain) to power the Earth.
Powering the world with solar would need up to 500,000km2 of solar panels