@AskTheDevil My late dad, an architect, started promoting and using clean energy plus other ideas (cool tubes, heat pumps) in his clients' buildings (if they agreed to it) back after the 70's oil crisis. A lot of the time he was laughed at for promoting "tree hugger / crunchy granola" attitudes. Those attitudes did start to change (slowly), but a lot more needs to change, and faster. But, it can be done.