@ArcturusSaDiablo do they charge you anything
@Horrrflmlvr
No, but they will restrict energy use / temperatures for those who participate. For me, any excess I put into the grid works as energy credit for me. So for 6-7 months of the year, I'm only paying utility lines fees for my bill. Winter is usually higher use with less return.
@Horrrflmlvr
About $15 total.