Most people are paying a lot more than they need to. In particular, Home Depot or Lowes, or typical solar installers, will charge 4x wholesale for a panel. You

Most people are paying a lot more than they need to. In particular, Home Depot or Lowes, or typical solar installers, will charge 4x wholesale for a panel. You can get a pallet-load of 400W panels for well under $200 each, now, so 45 for well under $9000, generating up to 18 kW, but rarely less than 5 kW on a winter day. Putting up brackets has become quite cheap. The above does not count electrical work, and (optional) batteries.