What is there not to agree with anything I said?
The electricity market is an interstate commercial system.
Electricity is sold across state lines.
Electricity futures are traded across state lines.
Fuel for power plants is purchased and transported across state lines.
There is a cost to removing waste products from power plants, and there are commercial entities that service that market.
There is a cost to treating the negative health and environmental impacts of these waste products (i.e. pollution) and there are commercial entities that service those markets.
If I'm a coal-fired power plant and you're a neighboring state, and I want you to process my industrial waste, I could do one of two things:
I could hire you to do it, or
I could force you to do it by dumping it on you.
The first is obviously commerce, but the second is, too, since there is still a good or commodity being exchanged. The only differences are that you didn't agree to participate in the transaction, and I cheated you out of payment. Either way, I still get the good/service of having my waste processed.
Additionally, even if you don't want to consider my freedom from waste products a "good", my commercial activity (which is itself interstate) would still compel you to engage in further commercial activities of dealing with my commercial waste products. Commerce in one state triggering commerce in another state is interstate commerce.