What do you need your token for?
In general, through blockchain peer-to-peer technology and E2C token, transactions with energy can be secure, anonymous, and decentralized.
As you skipped through my question again, I think this will be the closest of what I can get, althogh the point is not what I really looking for. Nevertheless, I would be forced to assume that your decision behind blockchain is for that three previously mentioned points.
I can understand decentralized, it'll be appealing. But secure? I would argue that a lot if fiat transaction is more secure than blockchain. And anonymous, why would a energy saving companies goes annon when such result could boost their marketing through the name of green companies?