I've decided to play the game, as they do.
I declare, and promise, that by 2050 I will no longer use any type of power for heating, lighting and cooking. I will no longer leave electrical appliances plugged in overnight, and will no longer use transport of any mode to travel around. I will also no longer eat meat, fish, vegetables or drink the water that will (by then) probably be in short supply.
There, I think that's covered it . . go me