renstur@coopnet:~/blog$ ls -lt ./topics/solar/
solar/
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Three power meters in Home Assistant and only one gets to be the total
My three brands of power meter in Home Assistant never quite agreed. I made the solar gateway at the mains, plus the battery's output, the only total, used every clamp for breakdown, guarded the subtraction and averaged before comparing. The leftover gap is an error bar, not a hidden load.
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My solar gateway went offline every night at 3 AM, and it was a Wi-Fi channel
My Enphase Envoy dropped off Home Assistant around 03:01 six nights running. UniFi's scheduled channel optimization moved the radio and the Envoy never rejoined. I turned channel optimization off, and in the six nights after, it didn't happen once.
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A solar gateway firmware update booked 11 MWh of phantom solar
An Envoy firmware update froze production and rebased the lifetime register, and Home Assistant booked about 11,562 kWh of fake solar in one hour. The CT counter never moved, so I reloaded the integration and rebuilt the statistics from it. An alert now watches the two registers.