How does solar export work in Singapore?

Power your panels make but you do not use flows back to the grid, and SP currently pays around S$0.22 per kWh for it. That is the second way solar pays you.

See what you could earn

Where your power goes

Every unit takes one of two paths.

Solar your home uses straight away is worth more than solar you export, because you avoid buying it. Both still pay.

Used at home

~S$0.30

per kWh, saved

Solar you use the moment it is made replaces power you would have bought from the grid. This is the bigger saving.

Sent to the grid

~S$0.22

per kWh, earned

Surplus you do not use is exported and credited by SP. Less than you save by using it, but still real income from your roof.

For a typical landed home, roughly a quarter is self-consumed and the rest exported, blending out to around S$0.24 of value for every unit your panels produce.

What moves it

What grows your export, what shrinks it.

More export income

A bigger system relative to your usage, leaving more surplus to export
Three-phase supply, which unlocks larger systems and more spare capacity
Daytime hours when usage is low, so more solar exports automatically

Less export income

A system sized just to your bill, leaving little surplus to export
High midday usage, such as always-on air-con, which self-consumes most output
Heavy shading, which lowers total production and leaves less to export

Why it pays to fill the roof

Bigger than your bill, on purpose.

Because export still pays around S$0.22, extra panels keep earning even once your own usage is covered. That is why most landed homes install 12 to 20 kWp, not just enough to zero the bill. The calculator shows where the sweet spot sits for your home.

Find your sweet spot How export affects your payback period

Common questions

Export, answered.

Around S$0.22 per kWh under the SP 2025 Q2 SCT Scheme. It is less than the roughly S$0.30 you pay to buy power, but it is still real money for energy you would otherwise waste.

Because export still pays well, it often makes sense to fill the roof rather than just cover your usage. The extra panels export their surplus and keep earning, which is why typical landed installs run 12 to 20 kWp.

Your installer arranges the metering and the SP application as part of the connection. You do not need to set anything up yourself.

The Solar Capacity Tariff (SCT) Scheme is SP Group's framework for buying surplus solar power from small generators, including landed home systems. Excess electricity your panels produce but do not consume is credited at the prevailing wholesale rate, approximately S$0.22 per kWh for Q2 2025. The rate is set quarterly and can change.

SP credits your export earnings against your monthly electricity charges. If your export income in a given month exceeds your consumption bill, the balance carries forward as a credit. It does not appear as a cash payment unless you close your account.

Export is effectively capped by your approved system size. SP Group approves your system capacity during the grid connection process, and you export up to that approved level. A single-phase connection is approved up to roughly 13 kWp; three-phase allows more. Ask your installer what your specific approval covers.

Yes. A battery stores surplus generation that would otherwise export, and discharges it in the evening when your panels are idle. This raises your self-consumption rate and reduces export. Since self-consumed power is worth S$0.297 versus S$0.22 for export, a battery shifts the economics in your favour if your evening usage is high enough to use what it stores.

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