'of' or 'by' renewable energy sources

I have the following sentence:

"The volatile electricity generation of renewable energy sources like wind turbines is a challenge for the electricity grid"

Is it correct to use 'of' here? Or do I have to use 'by' (or anything else)?

I'd appreciate every comment.

Solution 1:

By means ‘as a means of’ something or someone. This preposition often comes in a passive sentence.

While Of expresses the relationship of a part of something to its whole.

In the passive voice, “by” indicates WHO is doing the action. For example:- "David is cleaning the kitchen."

The above sentence in passive voice would be

"The kitchen is being cleaned by David."

Therefore., "The volatile electricity generation by renewable energy sources like wind turbines is a challenge for the electricity grid"