Startup Idea : Green Users

I would like to cut the energy bills in an innovative way: playning!My idea is based on the direct involvement of every person who use energy:I would like to develop an app where people can get some points for every action that allow save energy ( so save money!) and for every green- action. When the green-user has a give number of points can recive a prize ( discounts in supermarket, bus tickets ecc...).My idea it is not just for family, but also for the office! Can you immagine workers that the more save energy in their workplace, the more they earning? it would be advantages for employees and employers! If you have some doubts about my idea, or if you are just courious, don't hesitate to contact me!