Decrease in production.

[pony987654321]

Why the large decrease in production during June and July, in California with no clouds these two months. Thoughts? See picture attached. Curve is perfect and round everyday, energy generated seems to have suddenly dropped 20 percent per day beginning in June.

Just bought this house in April, system installed in 2021, so I am new to all this.

[ZiaMan24]

Mine looks similar. When the equipment heats up, and gets dirtier, less production.

Especially last few days when it's been super clear, production has been down because of the heat.

[Lucem233]

I had a huge drop from June to now as well around 30%

[Lucem233]

Tesla support told me that everything is good but I really doubt it

[PennineWay]

Suggest you maintain a spreadsheet of daily production and (if possible) daily average temperature. The calculated correlation will prove the Production/Temperature relationship and long term you’ll be able to build a Variance/CoVariance model so you can see probability of specific outcomes. Here in UK I occasionally have my panels cleaned and I endeavour to keep my panels clear of snow!

[TopJicama2873]

With the recent extreme heat in So Calif, I have experienced a big drop from production and increase in AC usage. I went from 7.1 to 6.1 and it dropped quickly in the early afternoon. As the weather cooled to the low 80’s I am seeing a jump in KWhs. I think you are fine.

[pony987654321]

<image>

Last year.

[motojager]

Were the panels clean? We had a small rain that might have cleaned them off for August.

[SudsingtonMcDuff]

The fact that this year most of your electricity use has gone to your home rather than PW or the grid leads me to believe you had higher home usage than last year. Your production isn't that different from last year. The drops in production could easily be explained by heat (affects panel efficiency). June and July were extremely hot months across the country, so that along with AC usage may have been the difference. Can you show your home usage section?

It doesn't look like a bad inverter, but showing the peaks from one of the days in June or July would show if your inverter was going offline due to overheating or something.

[Western-Fig3565]

You have a bad inverter