Power companies do charge different rates depending on what electronics are used.

Energy utility rate structures are both complex and unique to the individual company, but at a high level different classes of consumer pay different rate plans, such as residential vs. commercial/industrial vs. agricultural, and which is ultimately determined by the type of and quantity of certain electronic devices installed on premise as is normal for that class.

With that said, as a residential consumer there is little chance that you could ever legally or physically install one of the devices at your home that would necessitate being charged a CI or agricultural rate.

And interestingly enough those rates are all regulated by very heavy weight local/state and federal regulatory commissions.