There is no SEAI solar grant for a new build in Ireland. The €1,800 Solar Electricity Grant is restricted to existing homes — specifically, homes first connected to the electricity grid before 1 January 2021. A new build connected from that date on is not eligible. What you do still get: 0% VAT on the install, microgeneration payments for the electricity you export, and — in most cases — a roof that already has solar panels fitted to meet the building regulations.
- No SEAI grant — new builds (grid connection on/after 1 Jan 2021) are excluded.
- 0% VAT applies — worth roughly €1,080–€1,485 on a typical 4 kWp system, available to everyone.
- Microgeneration payments apply — you can sell excess electricity to the grid, regardless of your home's age.
- Your new build probably already has solar — Part L building regs require new homes to hit a 20% renewable energy ratio, and solar PV is the most common way developers do it.
Why a New Build Doesn't Get the SEAI Grant
The SEAI Solar Electricity Grant exists to retrofit renewables onto Ireland's older, less efficient housing stock. SEAI defines an eligible "existing home" as a dwelling first connected to the electricity grid before 1 January 2021. New builds are deliberately outside the scheme, because the building regulations already force them to include renewable energy at construction (more on that below).
SEAI checks eligibility using your MPRN connection date — the date your Meter Point Reference Number was first registered with ESB Networks — not your planning permission or BER cert. If your home sits right on the 2020–2021 boundary, the exact date matters and is worth checking before you do anything else. We cover how to look that up on our SEAI grant building-age rule page.
What You Do Get (1): 0% VAT
Since 1 May 2023, the supply and installation of solar panels on a private home carries a 0% VAT rate, down from 13.5%. This still applies in 2026 and it applies to a new build exactly as it does to an older home — it is not tied to the SEAI grant. Revenue confirms the zero rate covers the panels plus ancillary equipment installed with them (inverter, wiring, and a battery if fitted in the same job), as long as it's a single supply-and-install contract. (revenue.ie)
That matters more than people assume. A 4 kWp system costs €8,000–€11,000 installed — and those figures already include the 0% rate. If VAT were still 13.5%, the same install would cost roughly €9,080–€12,485. So the zero rate is worth about €1,080–€1,485 on a typical install. You lose the €1,800 grant, but you keep a VAT saving of broadly similar size that an older home gets on top of its grant.
What You Do Get (2): Your New Build Likely Already Has Solar
This is the part most new-build owners miss. Under Part L of the Building Regulations (the nearly zero energy building, or nZEB, standard), every new dwelling in Ireland must meet a Renewable Energy Ratio of 20% — at least a fifth of the home's energy demand has to come from renewables. (gov.ie, Technical Guidance Document L)
This is the "20% rule" people search for in connection with solar panels — though strictly it's a renewable energy requirement, not a solar-specific one. It can be met with a heat pump, biomass or solar PV; in practice developers usually combine a heat pump with a small solar array. So if you've bought a new home in the last few years, walk out and look at the roof — there's a good chance a small solar array is already up there. The question for most new-build owners isn't "how do I get solar?" — it's "should I expand what I already have?"
What You Do Get (3): Microgeneration Payments
The Clean Export Guarantee (CEG) pays you for the surplus solar electricity you send back to the grid. It is open to all microgenerators — there's no home-age restriction, so a new build qualifies just like any other property. You'll need your installer to complete the NC6 form to register the system with ESB Networks, after which your supplier pays you a per-kWh rate for everything you export. Rates and how to claim are on our microgeneration guide.
Putting It Together: New Build vs Existing Home
| Benefit | Existing home (pre-2021) | New build (2021+) |
|---|---|---|
| SEAI Solar Electricity Grant (up to €1,800) | ✓ Yes | ✗ No |
| 0% VAT on supply & install | ✓ Yes | ✓ Yes |
| Clean Export Guarantee (sell to grid) | ✓ Yes | ✓ Yes |
| Solar already fitted to meet Part L | ✗ No (retrofit) | ✓ Usually |
The honest summary: a new build is around €1,800 worse off than an older home of the same size, because it can't claim the grant. But it starts ahead in two ways — it usually already has a working solar array, and the install was done at construction when access and wiring are cheapest. Expanding an existing array on a new build is often a smaller, cheaper job than a full retrofit.
What to Do If You Want More Solar on a New Build
- Find out what you already have. Check your home's BER assessment or ask the developer for the solar array size (in kWp). Many new builds have only a small array — enough to pass Part L, not enough to cover a family's usage.
- Confirm whether it exports. If the system isn't registered for microgeneration, your installer can submit the NC6 form so you start getting paid for exports.
- Get quotes to expand it. Adding panels to an existing array — or adding a battery to store what you generate — is a quick job for a registered installer, and it's still 0% VAT.
Solar Quotes Ireland matches you with SEAI-registered, Safe Electric / RECI-certified installers in your county. Tell us your home details and what's already on the roof, and you'll get quotes tailored to expanding — not starting from scratch. No grant paperwork, no obligation.
Get free solar quotes →Frequently Asked Questions
No. The €1,800 SEAI Solar Electricity Grant is only available to existing homes — those first connected to the electricity grid before 1 January 2021. A new build connected from that date on is not eligible. You still get 0% VAT on the install and microgeneration export payments, and most new builds already have solar fitted to meet the building regulations.
Only if the house was first connected to the grid before 1 January 2021. SEAI checks this using your MPRN connection date, not your planning permission or move-in date. If your home was built around 2020–2021, the exact connection date decides it — check it before contacting an installer.
In Ireland it refers to the Renewable Energy Ratio in Part L of the Building Regulations: every new dwelling must meet at least 20% of its energy demand from renewable sources. Developers usually hit this with a heat pump plus a small solar PV array, which is why most new builds come with solar already installed.
Usually, yes. Because new homes must meet the Part L nZEB 20% renewable energy requirement, developers commonly fit a small solar PV array alongside a heat pump. It's typically sized to pass the regulations rather than to cover a household's full usage, so many owners later expand it.
Yes. The 0% VAT rate on the supply and installation of solar panels on a private home (in place since 1 May 2023) applies to a new build the same as any other home. It's separate from the SEAI grant and isn't restricted by the home's age. On a typical 4 kWp system it's worth roughly €1,080–€1,485 versus the old 13.5% rate.
Yes. The Clean Export Guarantee pays microgenerators for surplus electricity exported to the grid, with no restriction on the home's age. Your installer registers the system with ESB Networks using the NC6 form, after which your electricity supplier pays you a per-kWh rate for everything you export.
Published: 5 June 2026. Author: Neil Russell. SEAI eligibility rule (existing homes connected before 1 January 2021) per seai.ie. 0% VAT treatment verified against revenue.ie on 5 June 2026. Part L 20% Renewable Energy Ratio per the Department of Housing's Technical Guidance Document L. Cost figures from our 4 kWp cost guide.