Can solar power be stored as kinetic energy?

Question by I. C. Warming: Can solar power be stored as kinetic energy?
For instance, if a solar powered winch lifted a weight, could the subsequent downward motion of that weight drive an electric generator that operated after dark?
Or is there some other efficient way to store solar power that is not about a battery, or about just storing heat?

Best answer:

Answer by Joheye
You could use a capacitor but that is just about as inefficient as a battery. Storing energy is really tricky because it is so inefficient. You could heat up a substance to a extremely high temperature and use that to boil water to convert it to steam to power a generator. That would be better than a gigantic battery.

Know better? Leave your own answer in the comments!

7 Responses to “Can solar power be stored as kinetic energy?”

Leave a Reply

Security Code:

Solar for Home

This site uses the WP Chameleon WordPress plugin to rewrite articles