SEAI-Approved Solar Installers Directory Ireland 2026

This page used to be a simple directory of solar installation companies in Ireland. We rebuilt it from scratch for 2026 because the honest answer to “who should I use?” is not a static list of company names — the market reshuffles every six months, firms are bought, sold, rebranded, and overstretched, and naming names on a page that may be read 18 months from now is a fast way to mislead readers.

What you actually need is a way to navigate the Irish installer market intelligently: how it is structured, what the SEAI registration and Safe Electric registration actually mean (and do not mean), which categories of installer fit which kind of job, how to read a quote, and the seven specific questions that separate a competent installer from a salesman with a clipboard. That is what this page now is — updated for the 2026 market and the €1,800 SEAI grant landscape.

What “SEAI–registered” actually means in 2026

To claim the €1,800 SEAI Solar Electricity grant on a domestic installation, the work must be carried out by an installer on the SEAI Solar PV Registered Companies list. As of mid–2026 there are roughly 700 registered companies, ranging from one–van owner–operators to multi–county scale–ups installing 1,000+ systems a year.

Registration requires the company to:

• Hold a current Safe Electric Ireland (RECI) registration for at least one named operative
• Demonstrate insurance — public liability of at least €6.5m and employer’s liability of at least €13m
• Have a director or operative who has completed SEAI’s Solar PV installer training and re–certification
• Provide three reference installations on request
• Sign up to the SEAI Code of Practice and Quality Mark commitments

SEAI registration is necessary — without it, no grant. But registration is not a quality endorsement. Installers can be SEAI–registered and still over–promise, under–deliver, sub–contract the actual rooftop work to inexperienced teams, or close down 18 months into a 25–year panel warranty. The diligence is on you.

The five installer categories in Ireland (and which one fits your job)

Roughly speaking, the SEAI–registered installer pool sorts into five categories. Each is suited to a different kind of project. None is automatically better than the others — the question is whether the category matches your job.

Category	Typical jobs/year	Best fit	Pricing
National scale–ups	600–2,000	Straightforward 4–6 kWp jobs on tile/slate roofs anywhere in Ireland	Middle to upper
Regional mid–size	120–500	Most domestic jobs in a 60–100km radius of base	Middle
Owner–operator	15–80	Awkward roofs, ACA terraces, period properties, custom work	Variable (often best value or premium)
Specialist farm/commercial	40–200	TAMS 3 farm jobs, 30–100 kWp commercial roofs	Volume–driven, sharper
White–label / re–sellers	Variable (resells)	Avoid unless transparent about the actual installer	Upper (mark–up)

National scale–ups can deliver fast on standard jobs (4–week lead time, slick paperwork, established supply chain) but tend to sub–contract the rooftop work to two–person teams, which means the install quality varies with who turned up that morning.

Regional mid–size firms (the largest single category by share) own their installer teams, are usually within 30 minutes of your job for warranty callouts, and price competitively. They are the most common ‘best fit’ for a typical 4–6 kWp domestic job outside Dublin city.

Owner–operators are individuals or two–person firms where the company director also climbs the roof. They tend to be excellent on awkward jobs (slate roofs, low–pitch dormers, ACA streets, integrated–in–roof systems) but have small capacity, longer lead times in summer, and limited warranty–callout coverage if you move county.

Specialist farm/commercial firms install 30–200 kWp systems with three–phase inverters, ground–mount frames, and TAMS 3 grant paperwork. Most do not bother with domestic work below 10 kWp.

White–label re–sellers are the category to be careful with. They take leads, mark them up, and pass the actual installation to a contractor you have no visibility of. If the company you are quoted by cannot answer “who exactly will fit my system?” with a named installer team, you are likely talking to a re–seller.

Browsing installers by region

Our county directory lets you filter SEAI–registered installers near you. Each county page lists installer count, typical lead times, county–specific roof considerations, and pricing context for that area. The 22 counties currently covered in depth are:

• Leinster: Dublin, Kildare, Meath, Wicklow, Wexford, Carlow, Louth, Laois, Offaly, Kilkenny
• Munster: Cork, Limerick, Waterford, Kerry, Tipperary, Clare
• Connacht: Galway, Mayo, Sligo, Roscommon
• Ulster (Republic): Donegal, Cavan

If your county is not on this list, start with the main installer directory — it covers every Irish county.

Domestic install types and pricing tiers (2026)

All–in fitted price ranges below are mid–market for SEAI–registered installers in 2026, before the €1,800 grant. Premium specialists run 10–20% above; budget–tier re–sellers may quote lower but usually trim warranty, monitoring, or commissioning corners.

System	Typical use	Gross fitted	Net (after grant)
3 kWp (7–8 panels)	Small terrace, low usage	€6,500–€7,800	€4,700–€6,000
4–4.4 kWp (10–11 panels)	Standard 3–bed semi	€7,400–€9,200	€5,600–€7,400
6 kWp (15 panels) + 5 kWh battery	4–bed semi or detached	€11,400–€13,800	€9,600–€12,000
8 kWp (20 panels) + 10 kWh battery	Detached + EV + heat pump	€15,400–€18,200	€13,600–€16,400
10–11 kWp three–phase + 13.5 kWh	Large rural detached	€19,600–€23,800	€17,800–€22,000

Add 4–8% to all of the above inside the M50; subtract 4–6% in the Midlands; add 6–10% on the West Atlantic coast (marine–grade hardware, longer travel for installer teams).

The 8–question vetting checklist

Once you have two or three quotes in hand, the question is which company to actually appoint. Ask each finalist these eight questions. The competent installers will answer all eight cleanly. The weak ones dodge, deflect, or change the subject.

1. What is your SEAI registration number, and your Safe Electric registration number? Both should be on the quote. Check SEAI registration at seai.ie/grants/home–energy–grants/solar–electricity–grant/registered–companies. Check Safe Electric at safeelectric.ie.
2. Will the people installing the system on my roof be your own employees or sub–contractors? Either answer is fine. The answer “I don’t know” or refusal to answer is the warning sign.
3. Exactly which panel brand and model, inverter brand and model, and battery brand and model will be installed? Make sure the answer is on the quote in writing. ‘Tier–1 monocrystalline’ is not a model.
4. What is the workmanship warranty length, and what does it cover? Industry minimum is 5 years. Strong installers offer 10. Workmanship warranty covers mounting, cabling, water–tightness, commissioning — not the panels themselves (those have manufacturer warranty separately).
5. How quickly will you respond to a fault callout? Anything beyond 5 working days is a warning sign. The strongest installers commit to 48 hours.
6. Can you send three recent reference installations within 50 km of my address? Reference installs from your area mean your jobsite conditions are familiar to them. Generic references from a different province are weaker.
7. Will the install include a structural assessment of the roof timber, particularly batten condition on slate roofs? Pre–1970 slate roofs in Ireland often have batten rot under the slates — if your installer skips the structural check and just bolts mounts to whatever they find, you risk a roof leak in year three. Reputable installers refuse jobs on roofs that won’t hold the load.
8. Who handles the ESBN NC6 paperwork and the SEAI grant claim? The installer should do both as part of the quoted price. If they pass either back to you, it is a warning sign about how much support you’ll get post–install.

How to read a solar quote

A complete domestic solar quote in 2026 should contain all of the following on a single page. If your quote is missing any item, ask before you sign.

1. Panel brand, model number, and quantity — e.g. “11 x JinkoSolar Tiger Neo 440W” rather than “11 x 440W panels”.
2. Inverter brand, model number, and rated output — e.g. “Sungrow SH5.0RT 5 kW hybrid”.
3. Battery brand, model, total usable kWh, and round–trip efficiency — if a battery is included.
4. Mounting hardware — brand (K2, Renusol, Esdec, GSE) and material grade (A2/304 inland, A4/316 marine).
5. System sizing assumptions — orientation, pitch, expected annual generation (kWh/yr), and the yield figure used (Met Éireann county or PVGIS).
6. Scaffolding — included or excluded, and for how many days.
7. Electrical works — new consumer unit if needed, DC isolator location, AC isolator, surge protection.
8. ESBN NC6 paperwork — explicitly listed as included.
9. SEAI grant handling — deducted at invoice or claimed by you afterwards.
10. Workmanship warranty — length and scope.
11. Total gross price, grant deduction, and net payable.
12. Payment schedule — deposit %, progress payment(s), final balance on commissioning.

The strongest red flag in any quote is a missing breakdown — a single line ‘solar PV system installed: €X’ is not a quote, it is a deposit collection form. Insist on the line items above.

Commercial and farm installers

Above 10 kWp the market splits. Domestic–focused installers do not have the three–phase commissioning depth or the project management for 50–200 kWp roofs. If you are installing solar for a:

• Working farm with TAMS 3 grant intent — see our Farm Solar 2026 guide. Specialists exist in Cavan, Tipperary, and Kilkenny who do farm jobs almost exclusively.
• SME with 30–100 kWp roof — see our Commercial Solar 2026 guide. ACA (Accelerated Capital Allowance) gives 100% first–year capital tax relief, which transforms the project economics.
• Large industrial 100–500 kWp roof — see our 100 kW Solar System guide. These projects involve NC7 engineering connection agreements with ESBN and project lead times of 9–14 months.

Frequently asked questions

How many SEAI–registered solar installers are there in Ireland in 2026? Approximately 700 companies are on the list, though only ~350 are actively installing month–in, month–out. The list is updated by SEAI roughly monthly — always check the live list at seai.ie before signing.

Can I use a non–SEAI–registered installer and still claim the grant? No. The €1,800 grant requires the installation to be carried out by a registered company. A non–registered installer is allowed by law to install solar (provided the AC works are done by a Safe Electric registered electrician), but you forfeit the grant.

What if my installer goes out of business mid–warranty? Workmanship warranty becomes worthless — though manufacturer warranties on panels (25–30 years) and inverters (10–12 years) remain valid because they sit with the manufacturer, not the installer. Choose larger, more established firms if 25–year warranty continuity matters to you; choose owner–operators if work quality matters more than warranty paperwork.

Should I ask for separate quotes for panels, inverter, battery, and labour? Generally no. Bundled quotes give the installer flexibility on margins between components and usually come in cheaper. But you do want each component named in writing — see the ‘how to read a quote’ section above.

Can I claim the grant if I install solar myself? No. DIY installs are not grant–eligible. The grant requires installation by an SEAI–registered company, with a registered electrician handling the AC works and the NC6 ESBN notification.

Are imported ‘balcony solar’ or ‘plug–in’ kits grant–eligible? No. The €1,800 grant applies only to permanent grid–tied installations. See our plug–in solar guide for context on those kits.

Are the cheapest quotes always worst? Not necessarily. Genuinely lean owner–operators can be cheapest and highest quality. The worst quotes tend to come from white–label re–sellers selling at the upper end of the price range — mark–up with no operational depth. Use the 8–question checklist regardless of who is quoting.

Next steps

• Browse the SEAI–registered installer directory by county
• Run the maths for your roof with the solar panel calculator
• See if you qualify for the €1,800 grant in 60 seconds
• Read the 2026 SEAI Solar PV grant guide
• Or request a quote and we’ll match you with vetted installers