The SEAI Solar Electricity Grant is €1,800 in 2026 — and that figure held flat only because Minister O’Brien reversed the planned cut in November 2025. It was the first time since the scheme began that the grant was not reduced year-on-year — see what changed in the 2026 grant for the full before-and-after. The government’s published plan is still to reduce it by up to €300 a year until the grant is expected to end in 2029.
So: should you install now, or wait for prices to drop?
Waiting until 2027 saves you around €125 on the install itself. Waiting until 2028 saves around €229 on the install — but costs you roughly €2,200 in electricity savings your panels would have generated in the meantime. On net, waiting to 2028 leaves you approximately €1,971 worse off.
What the Government Has Said About the Grant Step-Down
Citizens Information, in a page dated 10 March 2026, confirmed the government’s position on the grant trajectory. The exact wording: “The Government plans to reduce the grant by up to €300 every year, as the cost of solar panels reduce. The grant is due to end in 2029.”
Source: citizensinformation.ie — Grants for solar panels (page dated 10 March 2026).
The 2026 reduction was already reversed once. The plan had been to cut the grant by €300 for 2026, bringing it to €1,500. Minister O’Brien intervened in November 2025 and kept it at €1,800. Ronan Power, CEO of Solar Ireland, called the decision “simple, sensible and hugely positive,” adding that keeping the grant at €1,800 “will help thousands more families cut their energy bills.” Budget 2027 (6 October 2026) then announced no cut either, and SEAI still lists €1,800 as of 7 October 2026. No 2027 rate change has been published.
That context cuts both ways. It shows the government is willing to hold the grant flat when it decides to. It also shows the direction of travel is downward. For anyone with a roof ready now, the 2026 rate is the known quantity. Waiting for 2027 means betting the budget goes your way.
The Three-Year Break-Even Table
The table models your net install cost across three install years, then shows what waiting actually costs when you account for the electricity savings you miss while your panels are not yet running.
- Typical 4 kWp residential system
- Gross install cost: €8,500 in 2026 (mid-market estimate), falling by approximately 5% per year (modelling assumption — no official percentage has been published for Irish install cost deflation)
- Grant: €1,800 in 2026 (confirmed); €1,500 in 2027 (planned per Citizens Information 10 Mar 2026 — a scenario only: Budget 2027 announced no cut); €1,200 in 2028 (assumes continuation of step-down — not confirmed by any source)
- Annual electricity savings from a 4 kWp system: approximately €1,100/year (import offset plus export income at mid-range CEG rates — actual varies with tariff, usage, and roof orientation)
| Install year | Gross cost | Grant | Net cost | Delta vs 2026 |
|---|---|---|---|---|
| 2026 | €8,500 | €1,800 | €6,700 | Baseline |
| 2027 | €8,075 | €1,500 | €6,575 | −€125 (marginal saving) |
| 2028 | €7,671 | €1,200 | €6,471 | −€229 (modest saving) |
On install cost alone, waiting to 2028 saves €229. That is before you account for the electricity savings your panels would have generated in the meantime.
The Real Cost of Waiting: Two Years of Missed Savings
A 4 kWp solar system on an average Irish home saves roughly €1,100 a year. That covers the electricity you no longer have to buy from the grid plus the export income from surplus generation under the Clean Export Guarantee. The exact figure varies: homes with a heat pump or EV charger drawing power during the day typically land at €1,200–€1,400; homes without those loads are closer to €900–€1,000.
If you wait until 2028 rather than installing in 2026, you forgo two years of those savings:
2 years × €1,100/yr = €2,200 in missed electricity savings
| Amount | |
|---|---|
| Net install saving from waiting to 2028 | −€229 |
| Electricity savings lost (2 years at €1,100/yr) | +€2,200 |
| Net cost of waiting to 2028 | +€1,971 |
Waiting to 2028 does not save you €229. It costs you approximately €1,971 in total.
What About Waiting Just One Year — to 2027?
The 2027 case is tighter. The net install saving is only €125. Against that, you miss one year of electricity savings — approximately €1,100.
There is also a political variable. Budget 2027 announced no cut, so for now the grant is flat again. A cut could still come later, by less than €300 or the full €300. If it holds flat, the case for waiting one year gets worse. If it drops by €300, the case is exactly as modelled above.
Under the full €300 reduction scenario: net cost of waiting from 2026 to 2027 is roughly €975 worse off (€1,100 in lost savings, minus €125 install saving). Even if the budget reduces the grant by only €150 — half the planned amount — you are still worse off waiting by around €1,025.
The step-down does not compensate for the electricity savings you lose while waiting. It compensates, partially, for the falling install cost, and nothing more.
Budget 2027 and How the Rate Is Set
Update, 7 October 2026: Budget 2027 (6 October 2026) announced no cut to the solar PV grant, and the government's 29 September package kept it at €1,800 while widening eligibility to homes built before 2025.
SEAI pays the grant amount in effect when you apply, not when the Letter of Offer arrives or the panels go up. Once approved, you have 8 months to complete the works. If you cancel and reapply, you get the rate in effect on the day of the new application.
So the date that matters is the day your application goes in on mgen.seai.ie. With no cut announced, there is no deadline to beat right now.
What If Solar Costs Fall Faster Than 5% a Year?
The 5% annual cost reduction in the table above is a modelling assumption, not a published government figure. If Irish install costs fall faster, the case for waiting improves.
At 10% annual cost deflation:
- 2027 gross cost: approximately €7,650, grant €1,500, net approximately €6,150 (saving vs 2026: approximately €550)
- 2028 gross cost: approximately €6,885, grant €1,200, net approximately €5,685 (saving vs 2026: approximately €1,015)
Even at 10% deflation per year, waiting to 2028 only pays off if your electricity savings from panels would be below €500 a year. For any home saving €900 or more — which covers most Irish homes with moderate usage — waiting still costs more than installing now.
Key Facts
- The 2026 SEAI Solar Electricity Grant is confirmed at €1,800 — 2026 is the first year since the scheme began that it was not reduced
- Grant tiers: €700 per kWp for the first 2 kWp, €200 per kWp for the next 2 kWp — maximum €1,800 for a 4 kWp or larger system
- The government’s published plan is to reduce the grant by up to €300 per year until it is expected to end in 2029, per Citizens Information (10 March 2026)
- The planned 2026 cut was reversed by Minister O’Brien in November 2025 — and Budget 2027 (6 October 2026) announced no cut for 2027
- 0% VAT applies to the supply and installation of solar panels on private dwellings since 1 May 2023
- You get the grant amount in effect on the day you apply; once approved you have 8 months to complete the works
- A 4 kWp system saves approximately €900–€1,400/yr in electricity costs; €1,100 is a mid-range estimate for a home without a heat pump or EV charger
For the full grant tier maths and how the €700/€200 per kWp formula works, see the SEAI solar grant tier calculation guide. For current installed system costs across different system sizes, see the solar panels cost Ireland guide.
If you are ready to move forward, the practical next step is getting quotes from SEAI-registered installers in your county. Quotes are free. Your Letter of Offer from SEAI must be in hand before any install work starts — and the rate you get is the one in force on the day you apply.
Get Quotes From SEAI-Registered Installers →Frequently Asked Questions
The government’s published plan is to reduce the grant by up to €300 per year until it is expected to end in 2029, per Citizens Information (page dated 10 March 2026). The planned 2026 reduction was reversed by Minister O’Brien — making 2026 the first year the grant held flat since the scheme began. Budget 2027 (6 October 2026) announced no cut, and SEAI still lists €1,800. Whether a cut comes later is not known.
No change has been announced. Budget 2027 (6 October 2026) announced no cut and SEAI still lists €1,800. The government’s stated trajectory would put it at €1,500, but the same planned reduction was dropped for 2026.
Not for most homes. Even if the grant drops by the full €300, the net install saving from waiting to 2027 is only around €125 on a typical 4 kWp system. That saving is wiped out in about six weeks of electricity savings from panels already running. For any home saving €900 or more per year from solar, waiting one year costs more than installing now.
SEAI says applicants get the grant amounts in effect at the time of application — not when the Letter of Offer arrives and not when the panels are fitted. If you apply in 2026, you receive that rate even if the install and post-works BER complete in early 2027, as long as you finish within the 8-month window. Cancel and reapply, and the rate on the new application date applies.
There is no published cutoff date, and Budget 2027 announced no cut. Because the rate is set on the day you apply, the only thing to beat is an announced change, and none has been made as of 7 October 2026.
The published plan is a phased reduction, expected to reach zero by 2029 — not an immediate abolition. Citizens Information (10 March 2026) states: “The grant is due to end in 2029.” Whether that timeline holds or is extended depends on future budgets.
Published: 18 May 2026. Updated: 7 October 2026. Author: Neil Russell. Sources: Citizens Information (10 March 2026), Solar Ireland press release (18 November 2025), gov.ie press release (0% VAT, May 2023), Revenue (VAT on solar panels — see revenue.ie for current guidance), energyefficiency.ie (November 2025 grant freeze article).
Note: the €300/yr reduction schedule is based on SEAI’s published roadmap as reported by Citizens Information; verify the current grant trajectory at seai.ie before acting on this timeline.