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Can PowerCO signal to produce less?

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Apologies if this has been discussed in the past...

I have a:
- SolarRoof 15.4KW
- 2 x PW+
- BGW 2

As we get into summer months I'm trying to troubleshoot a production issue on my system. We've had 14+ days of sunny weather (no clouds).

For the first 6-7 days my system was producing 70KWH days (with ~40-45KWH to the grid). Then it dropped to ~50-55KWH days, but the days were just as sunny (if not more and of course longer). What made me suspicious were the solar production graphs. On a good production day (~70-80), they are typical smooth, on a ~50-55KWH day they are erratic (and shouldn't be since there are no clouds). I was suspicious and restarted my PW's and Gateway one day, and the next day I produced 79KWH. But the day after that it dropped back down to ~58.9KWH (with erratic graph).

My suspicion is something is signaling back to the inverters to lower production (so instead of sending ~10KWH to the Grid, it's ~6-7KWH). I know it's possible (functionaly at least) since it's no different than self power mode when I was waiting on PTO (to avoid sending to the grid at all).

What I'm wondering is:
  • Is this possible tat PG&E and/or Tesla are signing the system to produce less for any reason? If so, what reason?
  • How can I go ahead and prove this?
    • Tesla said my system is working "at capacity and fine" but 2 reboots seems to restore max capacity for 24 hours before it goes back to this ~75% of what I know to be max.
Would appreciate any insights.

Thx.
 

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TL;DR Call Tesla, and insist that you have a problem.

Your utility does not have a way to curtail production (yet). Those graphs looks like a Tesla issue, either an MCI/wiring problem or inverter issue to me. My bet would be wiring or MCI issues. Look at the recent MCI threads. (MCI=mid circuit interrupter) It may be as simple as a loose connection somewhere, but I would certainly get it addressed.

So call Tesla, be nice, and keep calling back until you get a representative who moves things forward. I have called representatives three times in a row until I got someone who acknowledged that there was an issue. (And when they do move things forward, call back again to monitor the progress every couple of days.)

Good luck!

BG
 
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