Two bar-chart plots from Home Assistant showing solar production and home power usage.

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   Jonathan Corbet (corbet@social.kernel.org)'s status on Wednesday, 01-Jan-2025 02:49:53 JST Jonathan Corbet
   Two years ago, I installed solar panels on the roof, and was rewarded with enough power to run the house, charge the car, and even run the heat pump for much of the year.
   
   Another reward was the SunPower monitoring system that lets us track the performance of the system and see how each individual panel is working. Naturally, this system only delivers its data to some proprietary cloud system run by SunPower. Just as naturally, SunPower has gone bankrupt, and the monitoring system is now just a useless brick sitting on the wall.
   
   ...or at least it would be, had I not gone through the effort of integrating it with Home Assistant — a mildly difficult task involving hooking into a maintenance port on the device itself. So now I have the data out of the monitoring box stored on a local system, under my control, and I don't need to go scrambling for alternatives. I can obsess over my post-solstice data, waiting for production to reach decent levels again — that happens faster if I stare at it, I'm convinced.
   
   Maybe there's something to this free software idea after all.