Solar Panels Laois — Costs, Grants and Local Installers in 2026

A 4 kWp solar panel system in Laois costs between €8,000 and €10,500 installed, or roughly €6,200–€8,700 after the SEAI Solar Electricity Grant of up to €1,800. Laois has 15 SEAI-registered solar installers as of May 2026. A well-sited midlands system generates 3,400–3,600 kWh per year from a 4 kWp array. Payback typically runs 8–10 years, and faster for households with high daytime electricity use.

Laois is a landlocked midlands county with solar irradiance of roughly 950–1,000 kWh/m² per year — broadly average for Ireland. Generation figures in Laois are comparable to the national midpoint, and the same SEAI grant applies here as in every other county. What makes Laois worth noting is its profile: a mix of commuter housing around Portlaoise and Portarlington, alongside a significant agricultural base across the rest of the county. Both create distinct solar scenarios, covered below.

Solar Panel Costs in Laois — 2026

Typical installed costs for Laois residential systems, May 2026. Gross figures cover supply, installation, inverter and commissioning on a standard south- or southwest-facing roof. After-grant figures apply the full SEAI Solar Electricity Grant. Annual savings assume 30% self-consumption at a blended rate of 28c/kWh plus Clean Export Guarantee payments — your actual figure depends on when you use electricity and what your supplier pays for exports.

The grant is capped at €1,800 regardless of system size. Adding a battery typically adds €2,500–€4,500 to the gross cost and is not currently covered by the SEAI Solar Electricity Grant. For a full breakdown of how system size affects cost and payback nationally, see our solar panels cost Ireland guide.

On installer pricing in Laois: With 15 SEAI-registered installers serving the county, you can still get competitive quotes — but the market is smaller than Dublin or Cork. Some Laois homeowners also receive quotes from Kildare- and Kilkenny-based installers covering the commuter belt. Getting three quotes before signing is straightforward and recommended.

How Much Electricity Will Solar Generate in Laois?

Laois records solar irradiance of approximately 950–1,000 kWh/m² per year, which is broadly average for Ireland. For context, the sunniest counties (Cork, Wexford, Carlow) reach 1,050–1,100 kWh/m²; Donegal sits closer to 900 kWh/m². Laois sits comfortably in the middle.

For a well-sited Laois system — south-facing, 30–40 degree pitch, minimal shading — expected annual generation is:

A typical three-bed semi-D in Ireland uses 4,200–5,000 kWh per year. A 4 kWp Laois system generating 3,400–3,600 kWh covers a meaningful portion of that. The critical variable is timing: solar produces during daylight, and electricity you use then is electricity you are not buying from the grid. Electricity you do not use goes to the grid and earns you a Clean Export Guarantee payment from your supplier.

East- or west-facing roofs produce around 15–20% less than a south-facing equivalent. Properties near the Slieve Bloom Mountains on the Laois–Offaly border may have shading considerations from elevated terrain or nearby trees — your installer should assess this during a site survey.

Portlaoise and Portarlington: The Commuter Case for Solar

Portlaoise is on the main Dublin–Cork InterCity rail line, roughly 75 minutes from Dublin Heuston. Portarlington, which straddles the Laois–Offaly border, is also a significant commuter town served by both rail and road. A substantial share of households in both towns have one or more occupants commuting to Dublin daily.

That matters for solar payback, and not in the way you might expect. Commuter households are typically out during peak solar production hours (roughly 9am–4pm). This means more of the electricity generated is exported to the grid rather than consumed directly in the home. Export earns a Clean Export Guarantee payment from your supplier — currently around 18.5–19.5c/kWh depending on which supplier you are with — but self-consumption at 28c/kWh is worth more per unit. The upshot: payback for a commuter household with no daytime use will be slower than for a household with someone at home.

The counterweight is weekend and evening use. Households in Portlaoise or Portarlington with an EV charger, a home office used at weekends, or a heat pump running on a time-of-use tariff can improve their self-consumption significantly. If you are working from home a few days a week — even two days — the numbers shift materially. Ask your installer to model both scenarios before you size the system.

The SEAI Solar Electricity Grant in Laois

The SEAI Solar Electricity Grant works the same in Laois as it does in every other county. It is administered by the Sustainable Energy Authority of Ireland (seai.ie) and is currently worth up to €1,800.

Grant tiers (verified against seai.ie, May 2026)

• First 2 kWp: €700 per kWp (€1,400 for 2 kWp)
• Next 2 kWp: €200 per kWp
• Maximum: €1,800 (reached at 4 kWp and above)

A 3 kWp system attracts €1,600. A 4 kWp or larger system attracts the maximum €1,800.

Eligibility conditions

• Your home must have been built and occupied before 2021.
• No pre-existing BER is required to apply. A post-works BER is required to draw down the grant payment.
• You must apply at mgen.seai.ie and receive a Letter of Offer before any installation work begins. Work started before the Letter of Offer is issued does not qualify for the grant.
• The installer must be on the SEAI registered companies list at the time the work is carried out. Verify your installer at mgen.seai.ie/register.

How the grant is paid

You pay the installer the full invoice amount. Once installation is complete and the documentation is submitted — Declaration of Works, Safe Electric certificate, NC6 form, post-works BER — SEAI transfers the grant to your nominated bank account. The grant is not deducted at point of sale. SEAI states 4–6 weeks to process payment once all documents are received.

For the complete step-by-step process, see our full SEAI solar grant guide.

Solar for Laois Farms: TAMS 3 Capital Investment Scheme

Laois has a significant agricultural base across the county — tillage, beef and dairy farming are all present. If you are a farmer, the SEAI residential grant is not your route. Agricultural solar is funded through the TAMS 3 Solar Capital Investment Scheme, administered by the Department of Agriculture, Food and the Marine (DAFM).

Key TAMS 3 figures for Laois farmers:

• Grant rate: 60% of eligible investment for eligible farmers
• Investment ceiling: €90,000 per holding
• Administered by: Department of Agriculture, Food and the Marine — scheme details at gov.ie

TAMS and the SEAI residential Solar Electricity Grant cannot be combined for the same installation. If you are a farmer with a farmhouse, the residential grant applies to the house; TAMS applies to farm buildings. They cover separate premises and do not overlap.

Planning Permission for Solar Panels in Laois

Most rooftop solar installations on houses in Laois do not require planning permission. Under SI 493/2022 (Planning and Development Act 2000 (Exempted Development) (No. 3) Regulations 2022), solar panels on a house roof are exempt from planning permission provided they meet the exemption conditions:

• Panels must not project more than 15cm from the roof surface
• A 50cm setback from any external edge of the roof is required
• There is no area cap for rooftop solar on a house under this exemption
• Free-standing ground-mounted systems are subject to a separate 25m² cap
• Wall-mounted solar panels are NOT covered by this exemption and require planning permission

Exceptions apply to protected structures and architectural conservation areas. If your property is a protected structure or is in an ACA, check with Laois County Council before proceeding. Your installer will confirm whether your property falls within the exemption before installation.

Selling Excess Electricity Back to the Grid from Laois

Once your system is connected and registered under the Microgeneration Support Scheme, your supplier pays you for units you export to the grid under the Clean Export Guarantee (CEG). Export rates are set by individual suppliers. The CRU's enduring CEG framework sets the floor rate at zero — there is no government-mandated minimum above 0c/kWh. As of early 2026, indicative supplier rates include approximately 18.5c/kWh (Energia, Bord Gáis, Flogas) and approximately 19.5c/kWh (Electric Ireland). Rates change; check current terms with your supplier before assuming a figure.

The tax treatment is clear. Under Section 216D of the Taxes Consolidation Act 1997, the first €400 per year of income from microgeneration — selling electricity back to the grid — is exempt from Income Tax, USC and PRSI. This exemption runs to 31 December 2028 and was extended by Finance Act 2025. You do not need to do anything to claim it; Revenue does not require you to declare the exempt portion in a tax return. Income above €400 in a year is taxable in the normal way. The exemption applies at your sole or main residence — it is a personal tax relief, not a property scheme. See the Revenue Tax and Duty Manual Part 07-01-44 for details.

You will need a smart meter for export to be measured accurately. ESB Networks handles smart meter installation. Your installer submits the NC6 grid connection notification to ESB Networks as part of the commissioning process.

For full detail on how the CEG works nationally, see the Commission for Regulation of Utilities (cru.ie).

Choosing a Solar Installer in Laois

There are 15 SEAI-registered solar installers serving Laois as of May 2026. That is a smaller pool than Dublin (112 registered) or Cork (72), but sufficient to get competitive quotes. Some installers based in neighbouring Kildare, Kilkenny and Carlow also cover Laois, so your effective market may be wider than the county figure suggests.

What to check before signing

• SEAI registration: Verify your installer is currently on the SEAI registered companies list at mgen.seai.ie/register. Registration can lapse; check it is current at the time of signing, not just that the company was registered at some point.
• Safe Electric / RECI certification: Solar PV involves electrical work. Your installer must hold a Safe Electric registration — the consumer-facing name for the Register of Electrical Contractors of Ireland (RECI). Check at safeelectric.ie. SEAI registration and Safe Electric certification are two separate registers; an installer needs both.
• Written quotation: The quote should specify system size in kWp, panel brand and model, inverter brand, estimated annual generation for your specific roof orientation, and the total price at 0% VAT. If any of those elements are missing, ask for them.
• Site survey before signing: No installer should quote a fixed price without seeing your roof — or at minimum reviewing satellite imagery and asking about shading. A physical site survey before contract is standard practice.
• Warranty terms: Panels typically carry a 25-year linear performance warranty. Inverters are usually 5–10 years. Know who backs the warranty if the installer is not trading in year 15.

VAT on Laois solar installs

Residential solar PV supply and installation is charged at 0% VAT in Ireland since May 2023. This applies in Laois as everywhere in the Republic. Any quote for your home should show 0% VAT.