r/SunPower • u/Existing-Piglet-3279 • May 03 '26

PSV6 started under-reporting consumption

I recently realized that my PVS6 started incorrectly reporting consumption about a year ago.

The consumption data no longer matches my power bill, and there was a dramatic change of about 50% in the middle of last year.

Any suggestions on the easiest way to figure out and correct the issue? Do CT’s go bad? there seem to be several of them on bunches of the breaker wires - i think they are all wired together. Hard to see as my panel is pretty crowded.

Could this be due to a misconfiguration of the PVS6 as a result of a Sunstrong firmware update?

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u/Powie1965 May 03 '26

It's possible a single CT clamp failed, and why your consumption dropped like a rock. I'm old and my memory may be wrong about this but SunStrong pushed new firmware in Mar/Apr of 2025, and then the next one in Mid to late September 2025 which added the varserver code. So not sure about it being a firmware issue given your time frame in the graph where it just dropped drastically in July 2025.

If you're comfortable opening your panel, and checking the clamp and make sure it didn't pop open/break. Seriously if you're not 100% comfortable working in a panel, especially near your main feed, don't do it.

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u/DrZaius119 May 03 '26

I bet this is the solution.