My very extensive solar power project that I have been working on for about 5 years (on and off, as time and money permits), is now partly operational.
Temperatures here are in Centigrade:
As you can see, the annual geo solar heat storage, as well as the 3 x 375 USG buffer tanks are NOT yet online (gray lines). Even so, massive amounts of heat is captured and sent into the foundation of the house, as well as into the 375 USG main heat buffer.
I hope to have the system fully operational by this summer.