btu

I know this is heavily debated around here with the usual consensus that professional solar panels give you more bang for the buck but that isn't what I'm seeing now that prices are skyrocketing. Cheapest panels I see on ebay are $130 for 2'x20'. There is only one company offering that price...

Our county requires us to offset 100% of our BTU usage with either an air source heat pump, solar thermal or solar PV. We're going with a heat pump but they want a "worksheet prepared by the system supplier with system specification necessary to offset the required BTUs per year." We're getting...