The light bulb bit IS one very good way you can help...and save money. I am doing that myself.

As to enforcement, most of us can do little but VOTE for those who promise to do the enforcement! Of course it is hard to get people to change long established habits..especially when $$$$ are in the way of sense..(pun intentional). Education will help....if enough people KNOW what needs to be done, the idiots who refuse to pay attention 'may' get out voted....if there's enough time.