What Happens to Excess Solar Electricity?

By Home Solar Guide Team||question
Independently written | Plain-English guide
Excess solar electricity flows to the grid
Surplus solar has 4 destinations — prioritise by value: battery > hot water > EV > grid export.

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Export
Battery
Priority flow
EV charging

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Where does excess solar electricity go?

Excess solar electricity goes to (in priority order): (1) Battery storage — stores at 26.32p/kWh value for evening self-use. (2) Hot water cylinder — via solar diverter, heats water at 26.32p value. (3) EV charging — via smart charger, provides free driving. (4) Grid export — earns SEG at 4-15p/kWh. Without battery, diverter, or EV charger: all surplus exports to the grid at the lowest value. The optimal setup captures surplus at the highest value before it reaches the grid.

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