If you have septic do you pay for sewage? If you do it is through taxes. The real goal should be roof top solar on you home with batteries. You have a reliable dependable energy crop. We should also be resisting the grid tie even as a back-up and seeking to cut it and refusing to allow tax increases to keep for profit local monopoly (almost always petrol captured) utilities from being able to raise rates or taxes to stay in business- they need to be made to go under and replaced with roof top and municipal collaborative the for profit piece is beyond unacceptable. This is one crucial way you can really take control of your carbon foot print and cut down on rent seeking and attention theft against you and your family.