top of the triangle tube tank and much plumbing. Hot water from that tank is then fed to the 52 gallon hot water tank further into the house. One mistake:
There should be a second copper run to the hot water tank, and a small circulation pump on a timer. It takes a while for the really hot water in this tank to get to the shower, kitchen sink, etc.
Solar panel installation
The other happy gauge, the solar meter.
I can ask for details on how much power and how much surplus, but it is significant.