Still not enough, each tenant needs to have a stationary bike hooked to a generator. When they need electricity they peddle the bike. When they need heat they peddle the bike. Very easy system which I shall use when I campaign for office.
Reporter 'is it true you own a bike manufacturer?'
Answer 'have you seen my campaign app which has all my answers?
oh and it tracks the users!
The bike won't do much good if they sell it.