Do I have to use one of these companies to get the grant?

Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.

How many quotes should I get in Sligo?

Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.

Is this list in any order of merit?

No. Companies based in Sligo come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Solar hot water installers in Sligo

89 companies on SEAI's register say they do solar hot water in Sligo. Only work by a registered company gets the SEAI grant.

4 are based in Sligo; the other 85 cover it from elsewhere.
The grant for a semi-detached house is €1,200.
Get SEAI’s grant approval before any work starts. SEAI does not pay for work that began first.
Get three written quotes for the same job. This list is not a ranking.

Five evacuated-tube solar water-heating panels in a row on the concrete-tiled roof of a pebble-dashed semi-detached house. — Solar water-heating tubes on a semi-detached house in South Dublin.
Solar Hot Water Panels On Suburban House Roof South Dublin Sep2012 · Terence wiki · CC BY-SA 3.0

See your grants in Sligo, and what you’d pay

Check my home

About 10 seconds. See your numbers first, then get quotes if you want them.

Based in Sligo

4 of them, from SEAI's register (read 25 September 2026). Not an order of merit. Published figure

AMS Plumbing & Heating Specialists LtdHeat pumpHeating controlsSolar hot waterBased in Sligo · serves Connacht · SEAI no. 10343Based in Sligo.
Brusna Energy Solutions LtdAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and doorBased in Sligo · serves Connacht · SEAI no. 10066Based in Sligo.
James Lynch Plumbing & Heating LtdHeat pumpHeating controlsSolar hot waterBased in Sligo · serves Connacht · SEAI no. 15315Based in Sligo.
Sean Gallagher Plumbing + Heating LtdHeat pumpHeating controlsSolar hot waterBased in Sligo · serves Connacht · SEAI no. 11291Based in Sligo.

Also cover Sligo from elsewhere (85)

These told SEAI they cover the province Sligo is in, or listed it among the counties they serve. Ask how far they travel before you go any further. Names only here; each one’s full register row is on its own county’s page. OSS = One Stop Shop.

Ashgrove Engineering Ltd T/A Ashgrove Renewables (OSS) · Bayview Contracts Ltd (OSS) · Bord Gais Energy Ltd (OSS) · Breffni Insulation Ltd (OSS) · Churchfield Home Services (OSS) · Cooper Insulation Ltd. (OSS) · Electric Ireland Superhomes (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · Airsol Renewable Solutions Ltd · Allbrite Heatpump Specialists Ltd · Alternative Energy Ireland AEI · Alternative Heating & Cooling Ltd · Anthony Brady Plumbing Limited · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Ballyhogan Plumbing Services Ltd · Bayside Heating Ltd · Blackstrand Retrofit Ltd. · Ciocan Construction Ltd · Cloverhill Renewables Ltd · Cok Electrical & Renewables Ltd · Cowan Heating and Plumbing LTD · Craft Heating & Plumbing Services · Damian Grehan Plumbing & Heating · David Coleman Renewables Ltd. T/A DC Renewables · Ecoflex Energy Ltd · Ecoscene · Efficient Renewables Ltd · Energy Saving Technologies Ltd T/A Energlaze · Energywise Savings Ireland Ltd · Eoin Hanniffy Trades 365 Ltd · Feeney Plumbing And Heating Ltd. · Ferm Eng Ltd · Finlay EcoFit Tullamore Ltd · Finnegan & O'Neill Limited · FND Heating Ltd · Free-Flo Heating + Gas Services Ltd · G. Traynor & Sons Ltd · Greentherm Ltd. · Homergy Ltd T/AComfort Solutions Retrofit · Horan Plumbing Ltd · J & D O'Brien Ltd · James Heneghan Electrical Plumbing And Heating · James Kane Energy Solutions LTD · James O Connor Plumbing & Heating · Jason Fahy Heating · JJS Plumbing & Heating Limited · Jobryte · Joe Dunican Plumbing And Heating Ltd · Joe Gavin Ltd · Joe Hegarty Plumbing Ltd · Joseph Sheridan · Kevin Durkin Heating And Plumbing Services · Killco Renewables Ltd · Larkfield Plumbing Contractors Ltd · LVP Renewables Ltd · Marron Activ 8 Energies Ltd · Martin Fahy Heating & Plumbing Ltd · Mc Cormack Plumbing & Construction Ltd · Mc Elligott Heating & Plumbing Limited · McHugh Heating & Plumbing Ltd · McManamon Mechanical Services Ltd · NZEB Technologies Ltd · O Brien Bros Plumbing & Heating Ltd · Paul Folan Plumbing & Heating Contractor · PC Plumbing And Heating Ltd · R O'Donnell Plumbing Ltd · Royal Renewables Ltd · RTS Heating & Cooling Services LTD · Solaregy T/A Sola · TAF Plumbing Ltd · Terence Mc Donagh · Thermax Ltd · VKG Trading Ltd · Western Energy Systems · White Premier Construction Ltd

See your grants and what you’d pay

Four questions about your home, then your numbers. Get quotes from registered contractors if you want them.

Check my home

The detail

How Sligo compares

Solar hot water installers who say they work in each county, from SEAI's register. Published figure

Figure 1Published figure

89 solar hot water installers say they work in Sligo; the median county has 118

Sligo is 20th of 26. The most list Kildare and Wicklow (154); the fewest, Donegal (57). 18 One Stop Shops list Sligo.

Sligo89
The median county118
Most: Kildare and Wicklow154
Fewest: Donegal57

Each bar counts companies on SEAI's register that list the county for solar hot water. Many firms tick a whole province, so counts move in regional steps. A count is choice, not capacity. Registration is paperwork, not a review of their work.

Sources: SEAI home energy, One Stop Shop and solar registers, read 25 Sep 2026

What it costs, and what the grant pays

National figures, not Sligo ones: SEAI does not publish prices by county. SEAI rule

Before you sign

Four things SEAI tells homeowners to do.

Wait for your grant approval email before any work starts. SEAI does not pay for work that began before it was approved.
Get at least three quotes, and check each one covers the same job. The cheapest quote is often the one that leaves something out.
Check the company is on the register on the day you sign. Companies join and leave it, and this page is a copy taken on one day.
Get it in writing: what is being done, what it costs, when it starts and when it is finished.

How the application works →

Questions people ask

Do I have to use one of these companies to get the grant?: Yes. SEAI only pays a grant on work done by a company on its register, and the company claims it on your behalf. Work done by anyone else is not covered, however good it is.
How many quotes should I get in Sligo?: Three, from companies registered for the same job, and ask each for a written breakdown. Quotes for the same house often differ by thousands because they include different work, not because one is dearer.
Is this list in any order of merit?: No. Companies based in Sligo come first, then the ones that travel to it, then One Stop Shops, then alphabetical. Being on the register means the paperwork is in order, not that the work is good.

Listed on SEAI’s public registers on 25 September 2026. Being registered is not an endorsement by SEAI or by us. Check the current register on seai.ie before you sign anything. Not affiliated with SEAI. On this list? Get homeowner plans to quote for

Updated 5 October 2026 · grants checked 10 Oct 2026 · register read 25 Sep 2026 · How we know · Corrections