Self-consumption rate

The self-consumption rate shows how much of the PV energy a system produces is used on site, compared with the total it produces. It is the self-consumption divided by the PV yield for the same period. Self-consumption counts the power the household takes straight from the system (direct consumption), plus any power the system puts into the battery. SMA monitoring shows this rate for daily, monthly and yearly periods, with daily, monthly and annual yield as the divisor. Some SMA interfaces also show a live self-consumption quota, which is the current self-consumption divided by the current PV power. The same screens list it next to the self-sufficiency quota, which divides internal power supply by consumption, and the direct consumption rate, which divides direct consumption by yield. Setting both the consumption limit and the feed-in limit to 0 in SMA settings gives classic increased self-consumption of PV power, with no peak-load shaving.

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• sentence 6: support check: partial - Rates are listed together with the definitions given, but the live self-consumption quota is not shown as listed on those same screens; the monitoring tabs list the self-consumption rate, not the quota. -->