I have just received my first quarterly electricity bill after switching to a 21c solar feed-in tariff with a new supplier.
Comparing what the bills says with what the Tesla PW2 downloaded 5-minute data reckons over the same period shows this:
According to PW2 data, about 7% of my grid consumption is missing. Why the Shoulder period is out by so much is a bit of a mystery - if the PW2 measurements are out, I don't know why it would depend on the time of day.
I suppose the good news is that measurement of solar export is basically spot on.
Comparing what the bills says with what the Tesla PW2 downloaded 5-minute data reckons over the same period shows this:
According to PW2 data, about 7% of my grid consumption is missing. Why the Shoulder period is out by so much is a bit of a mystery - if the PW2 measurements are out, I don't know why it would depend on the time of day.
I suppose the good news is that measurement of solar export is basically spot on.
