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

A 4 kWp solar panel system in Longford 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. Longford sits in the north midlands with solar irradiance of roughly 900–950 kWh/m² per year — broadly average for Ireland, though slightly below the national midpoint. A 4 kWp system generates approximately 3,200–3,500 kWh per year. Payback typically runs 9–12 years. With 8 SEAI-registered installers covering the county — drawing on contractors from Athlone, Roscommon, Cavan, and Westmeath — getting two or three quotes before committing is the right move.

Solar in Longford: What to Expect

Longford is Ireland's second-smallest county by population, with around 46,000 residents. As a north midlands county, it has broadly average solar conditions — not the high irradiance of Cork or Kerry, but not the cloudier northwest conditions of Leitrim or Donegal either. The flat agricultural landscape and proximity to Lough Ree and Lough Gowna means few natural shading obstacles for most properties, which is a practical advantage.

Longford Town, Granard, Edgeworthstown (Mostrim), Ballymahon, and Lanesborough are the main population centres. The county's agricultural character is relevant for one specific reason: TAMS 3 (the Targeted Agricultural Modernisation Scheme, administered by DAFM at gov.ie) provides capital grants of 60% toward solar PV installation on farm buildings for eligible farmers, subject to a €90,000 investment ceiling. Longford farmers should consider TAMS 3 in addition to the residential SEAI grant when assessing the economics of solar.

Lanesborough, on the Longford-Roscommon border at the northern end of Lough Ree, is a useful local reference point for the energy transition in the midlands. The former ESB peat station at Lanesborough (Lough Ree Power) closed in 2020 after decades of operation — one of several midlands peat stations to close as Ireland moved away from peat generation. Solar PV is a different scale of energy infrastructure, but the shift from fossil generation to distributed renewable generation is the same story.

Solar Panel Costs in Longford — 2026

Typical installed costs for Longford 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 how much electricity you use during daylight hours and what your supplier pays for exports.

The SEAI grant is capped at €1,800 regardless of system size. A 4 kWp system attracts the maximum €1,800; a 3 kWp system attracts €1,600. 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 national cost breakdown across all system sizes, see our solar panels cost Ireland guide.

How Much Electricity Will Solar Generate in Longford?

Longford receives roughly 900–950 kWh/m² of solar irradiance per year — broadly in line with the Irish midlands average, slightly below counties further south. For comparison: Cork averages 1,050–1,100 kWh/m²; Donegal averages around 900 kWh/m². Longford sits in the middle of the national range.

For a well-sited Longford system — south- to southwest-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/year. A 4 kWp Longford system generating 3,200–3,500 kWh covers a substantial portion of that — though how much you save depends on when you use electricity. Solar produces during daylight. Electricity consumed directly from the panels avoids grid purchase at 28–34c/kWh; electricity exported earns you whatever your supplier's current CEG rate is — rates vary by supplier and have ranged from roughly 16c to 25c/kWh. The economics are best for households with meaningful daytime electricity use.

East- or west-facing roofs lose around 15–20% of output compared with south-facing. Ask any installer for a site-specific generation estimate based on your roof orientation and any shading before signing a contract.

The SEAI Solar Electricity Grant in Longford

The SEAI Solar Electricity Grant applies equally across all 26 counties. Living in Longford does not change your eligibility or grant amount. The grant is administered by the Sustainable Energy Authority of Ireland (seai.ie) and is 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. This is SEAI's exact wording.
• No pre-existing BER is required to apply. A post-works BER is required to draw down the grant after installation — your installer arranges this as part of the standard process.
• The installer must be on the SEAI registered companies list at the time the work is carried out. Verify this at mgen.seai.ie/register before any contract is signed.
• Solar PV must be a new installation. Replacement of existing panels does not qualify.

How the grant application works

The sequence matters. Apply through mgen.seai.ie and receive a Letter of Offer from SEAI before any works begin. Starting installation before receiving the Letter of Offer disqualifies you from the grant. Once you have the Letter of Offer, installation can proceed. After installation, your installer submits the Declaration of Works, Safe Electric certificate, and NC6 form. You commission a post-works BER. SEAI then pays the grant directly to your nominated bank account, typically 4–6 weeks after all documents are received. For the full step-by-step process, see our SEAI solar grant guide.

TAMS 3 for Longford farmers

For agricultural properties in Longford, the Targeted Agricultural Modernisation Scheme (TAMS 3), administered by DAFM at gov.ie, provides capital investment grants of 60% toward solar PV on farm buildings for eligible farmers, subject to a €90,000 investment ceiling. TAMS 3 applies to farm-building solar rather than the residential SEAI scheme. If you are a Longford farmer considering solar across both your home and farm buildings, these are two separate grant streams to evaluate.

Finding a Solar Installer in Longford

With 8 SEAI-registered installers covering Longford as of May 2026, the local pool is limited. In practice, Longford homeowners draw on installers based in Athlone, Roscommon, Cavan, and Westmeath who cover the county. This cross-county coverage is standard for smaller midlands counties — it does not affect your grant eligibility, and it does not mean you will pay more, but it does mean you should account for travel costs when comparing quotes and allow slightly longer lead times than in larger urban counties.

Ireland's second-smallest county by population means fewer resident installers, but Longford's central location in the midlands means it is within reasonable reach of installers from several neighbouring counties. Getting two or three quotes remains achievable and worthwhile — quote variation of 15–25% for the same system is common even within a small installer pool.

What to check before signing

• SEAI registration: Verify your installer is currently on the SEAI registered companies list at the time of quoting. Registration can lapse. Always check the live register, not just a company's own claim.
• Safe Electric / RECI certification: Solar PV involves electrical work. Your installer must hold a Safe Electric registration (RECI — Register of Electrical Contractors of Ireland). Check this at safeelectric.ie. SEAI registration and RECI certification are separate requirements — 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, and total price at 0% VAT. If any of those are missing, ask before signing.
• Site survey before signing: Any installer quoting without visiting your roof or reviewing detailed site imagery is working from assumptions. A proper site survey before contract is standard practice.
• Guarantee terms: Panels typically carry a 25-year linear performance warranty (around 80–85% output at year 25). Inverters are usually 5–10 years. Know who backs the warranty if the installer is no longer trading in year 15.

VAT on Longford solar installs

Residential solar PV supply and installation is charged at 0% VAT in Ireland since May 2023. This applies to Longford homeowners as it does everywhere in the Republic. Any quote for your home should show 0% VAT on the solar PV elements. Commercial and business installations are not covered by the 0% residential rate.