Question

how is supply of electricity maintained in a windmill when there is no wind and solar panel when there is no sun​

Answer 1

Answer:

the electricity generated is stored in a battery. This battery provides electricity when there is no wind in the case of a windmill and no sun in the case of a solar panel.

Answer 2

Answer:

In both the cases, the electricity generated is stored in a battery. This battery provides electricity when there is no wind in the case of a windmill and no sun in the case of a solar panel.