Sorry for the tangent, but it sounds like you're somewhat up on current pricing...
How much does the additional equipment (batteries, inverters, tie-ins to existing house power) and installation labor tend to cost?
How much does the additional equipment (batteries, inverters, tie-ins to existing house power) and installation labor tend to cost?
But modern houses just plan those in anyway and the battery storage i'm aware of, they are only 10kWh which costs not that much anyway.