4.65 kWp
Where the binding cap changes
Below it the €645 per kWp cap decides your grant. Above it the €3,000 ceiling does, so a bigger system stops earning a bigger grant.
The grant, in full2026 scheme · checked 5 August
The €9,000 only appears if you fit a battery at the same time, and the regulator does not print that number anywhere. On a €6,250 system the gap between the figure you have read and the figure you will pay is about €1,700.
| Eligible cost, example | €6,250 |
|---|---|
| 65% of that would be | €4,063 |
| Grant after the caps | €3,000 |
| You pay | €3,250 |
The 3,000 euro per-system cap binds here, not the 65%. Above 4.65 kWp a larger system does not bring a larger grant.
We publish the working. We do not install anything. How this works
Two caps apply and they cross. Below 4.651 kWp your grant is decided per kilowatt. Above it, the flat ceiling takes over and extra panels add nothing to what the state pays.
| System size | €645 per kWp would give | Grant after both caps | Binding cap |
|---|---|---|---|
| 2 kWp | €1,290 | €1,290 | per kWp |
| 3 kWp | €1,935 | €1,935 | per kWp |
| 4 kWp | €2,580 | €2,580 | per kWp |
| 4.651 kWp | €3,000 | €3,000 | per kWp |
| 5 kWp | €3,225 | €3,000 | per system |
| 6 kWp | €3,870 | €3,000 | per system |
| 8 kWp | €5,160 | €3,000 | per system |
| 10 kWp | €6,450 | €3,000 | per system |
Derived from the 2026 RES scheme caps: €645 per kWp and €3,000 per system. The crossover is 3,000 divided by 645. Assumes 65% of eligible cost is not the binding constraint, which holds above roughly €4,615 of eligible cost.
4.65 kWp
Below it the €645 per kWp cap decides your grant. Above it the €3,000 ceiling does, so a bigger system stops earning a bigger grant.
The grant, in full13 July 2026
If you already have panels, you can no longer get a grant to add a battery. Support survives only bundled with a new PV system.
What changedSince 2010
If anyone in your household claimed a similar grant since 2010, nobody at that address can claim again. Not just the original applicant.
Who qualifiesWe are paid when someone asks to be introduced to an installer. Telling you that landlords cannot claim, or that your household already used its grant in 2013, reduces the number of introductions we make.
We do it because a site that only ever reaches one conclusion is an advertisement, and an advertisement is not much use to somebody making a five figure decision once in their life.