Building heating is usually the thing that a lot of people forget about when it comes to energy. If you have 45 cents a kilowatt hour electricity you're not going to be heating your home with electricity unless you're a Rockefeller. In a lot of cases, building heating causes more emissions than transportation. So if you can help people heat their homes or help businesses or factories heat their buildings using a carbon neutral energy source, that can be more impactful than taking every car off the road.