I guess you are right to say that electricity is a product of energy. If so, I believe you also think of cooking oil as an energy product which is derived from crops.
Grammar Geek“Do you mean using batteries to power cars? ”
Yes. I gave two examples: electricity and cooking oil (biodiesel)
Are you still confused? Could you tell me what's bothering you. I feel that you're not comfortable with the logic of my sentences.