Question

What is the importance of batteries in using renewable energy such as solar and wind power?

Batteries are very energy dense.

Batteries provide energy even when it's dark and the wind is not blowing.

Batteries can be charged when energy is abundant and discharged when energy is not.

Batteries can keep electricity flowing even when a cloud passes over head and reduces electricity production from solar panels.

Batteries last forever (or at least a long time).

Answer 1

Solution:

Battery is a renewal source because it keep electricity flowing even a cloud passes head and reduces electricity production from solar panels.