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Installed solar one month, have question about the utility bill

Former Community Member
Former Community Member

Admin, if I posted in the wrong forum, please remove to the right one.

Tesla installed solar and turned on 4/1/2021. According to Tesla, the system will produce more than my usage (140%). April last year (4/2020) usage was 525kWh.

In month of April, it produced close to 1000 kWh (I keep recording every day). Today, I got the bill from SCE (period 4/1 – 4/29), the usage on the bill in April is 279kWh x $0.23/kWh = $66 - $29 (CA climate credit) = $36 (the amount I am owe).

I was assuming with the amount should be negative or at least zero. Would someone kindly explain it to me? I had hear about NEM but there was nothing like that in the bill. I am so confused at this point.

I am in S.Cal. Tried to upload attachment of the bill but couldn't "error uploading image".

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  • It really all depends on your electricity meter, and the rules that apply in the state where you live.  Don't assume you have net metering, where the price per unit exported equals the price per unit imported.

    Most electronic meters, and many “spinning disk” meters, simply won't record exported electricity.  So unless you have an export meter, or a modern smart meter that can measure exports, then what you're exporting may not be being measured at all.

    Even if your exports are metered, you may well be paying retail prices for what you import, but get paid wholesale prices for what you export.

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  • It really all depends on your electricity meter, and the rules that apply in the state where you live.  Don't assume you have net metering, where the price per unit exported equals the price per unit imported.

    Most electronic meters, and many “spinning disk” meters, simply won't record exported electricity.  So unless you have an export meter, or a modern smart meter that can measure exports, then what you're exporting may not be being measured at all.

    Even if your exports are metered, you may well be paying retail prices for what you import, but get paid wholesale prices for what you export.

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