Continuing to expand my power instrumentation, beginning to plumb into the APIs on my solar gateway.

My lab power consumption is extremely stable throughout the day. The house, on the other hand, not so much. Massive spikes from the main house heat pump running then stopping. The max in my current dataset is 71.5A which on a 2-phase 120/240V system is about 17.2 kW.

I wonder how much more efficiency I would see if I switched to variable speed mini-splits or something. (this is independent of the gains I hope to see from lab energy harvesting)