It's still too hot to resume doing work on my solar battery storage system, though I have been monitoring it each day.
The weather has cooled down now that we are past mid-summer. The 24-hr average temperature is now 94F (34C), and my grid consumption is only 25 kWh yesterday. Last year, at the same temperature I used 60-70 kWh off the grid.
Again, it's a combination of solar generation (about 25 kWh/day right now) and the more efficient use of the mini-split to result in the above energy saving.
The plan is still to install another mini-split for the master bedroom. I am still debating putting an additional 2kW worth of PV panels on the roof. Price is cheap, but it takes a bit of work. On the other hand, when all the other subsystems are in, the additional kWhs from the new panels have a very low marginal cost.
It has to be cool enough to take down the entire system inside the shed, and to rewire the components for neatness and to add instrumentation and automatic safety features. A small window AC needs to be installed to keep the equipment cool. Right now, the shed door has to cracked open during the day, and a fan used to exhaust the hot air. Then, the shed door is closed at night to keep out critters.
! Next September I'll have switched to my own SS record which will be an additional (drum roll) $2400! a year more than what I've been collecting since FRA as half of DH's.
