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 Louth?

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 Louth 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 Louth

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

10 are based in Louth; the other 141 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 Louth, and what you’d pay

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

Based in Louth

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

Aspen Eco PowerOne Stop ShopAttic insulationCavity wall insulationExternal wall insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterWindow and doorBased in Louth · serves Dublin and Leinster · SEAI no. 19984 · WebsiteBased in Louth.
Breen Heating and Plumbing LtdAttic insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterBased in Louth · serves Dublin, Leinster and Ulster · SEAI no. 10347Based in Louth.
CGPHeating controlsSolar hot waterBased in Louth · serves Leinster and Ulster · SEAI no. 10057Based in Louth.
CSC Engineering LtdHeat pumpHeating controlsSolar hot waterBased in Louth · serves Dublin and Leinster · SEAI no. 12539Based in Louth.
Gilroy Heating Services LtdHeat pumpHeating controlsSolar hot waterBased in Louth · serves Dublin, Leinster, Munster and Ulster · SEAI no. 16652Based in Louth.
Hagim Gas LtdHeat pumpHeating controlsSolar hot waterBased in Louth · serves Leinster and Ulster · SEAI no. 10036Based in Louth.
Jason Fahy HeatingHeat pumpHeating controlsSolar hot waterSolar panelNationwide · SEAI no. 15829Based in Louth.
NZEB Technologies LtdHeat pumpHeating controlsSolar hot waterSolar panelNationwide · SEAI no. 15238Based in Louth.
Shane McKenna Plumbing & HeatingHeat pumpHeating controlsSolar hot waterBased in Louth · serves Dublin and Leinster · SEAI no. 17175Based in Louth.
Vinnie Johnson Plumbing & Heating LtdHeat pumpHeating controlsSolar hot waterBased in Louth · serves Dublin and Leinster · SEAI no. 11184Based in Louth.

Also cover Louth from elsewhere (141)

These told SEAI they cover the province Louth 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.

Activ8 Energies (OSS) · 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) · Energlaze Home Energy Upgrades (OSS) · Energyfix (OSS) · Envirobead Ltd. (OSS) · Greenwatt Ltd (OSS) · Home Comfort Retrofits Ltd (OSS) · House 2 Home Retrofit Ltd (OSS) · Integrate Home Energy Upgrades Limited (OSS) · Kingdom Installation Ltd (OSS) · Kingspan Insulation Ltd (OSS) · Kore Retrofit Ltd (OSS) · Larkrock (OSS) · Lough Projects (OSS) · Moston Construction Ltd (OSS) · OHK Energy LTD (OSS) · Retrofit Design Ltd (OSS) · Retrofit Energy Ireland (OSS) · SSE Airtricity Energy Services Ltd (OSS) · Allbrite Heatpump Specialists Ltd · Alternative Energy Ireland AEI · Alternative Heating & Cooling Ltd · Andy Gahan Plumbing & Heating · Anthony Brady Plumbing Limited · Anthony Coughlan Heating & Plumbing TA C&S Construction Services · Anthony Ryan · Anthony Ryan Plumbing Limited · Arch Plumbing & Heating · Aries Mechanical Contractors Ltd · B Earley Plumbing & Maintenance Ltd · B-Warm Ltd · Ballydowd Homes Ltd · Ballyhogan Plumbing Services Ltd · Bayside Heating Ltd · bightheplumber Ltd · BPM Heat · Brian Carrick Heating And Plumbing · Brian O'Toole Heating & Plumbing Services Ltd · Broomhall Estates · Cammogue Engineering Limited · Ciocan Construction Ltd · Cloverhill Renewables Ltd · Cok Electrical & Renewables Ltd · Cowan Heating and Plumbing LTD · Craft Heating & Plumbing Services · Cunningham Mechanical Services Ltd · D Harris Heating and Plumbing · Dan Fenlon Heating & Plumbing Ltd · David Coleman Renewables Ltd. T/A DC Renewables · Decana Mechanical T/A Curran Heating & Plumbing · DT Plumbing & Heating Ltd t/a M3 Plumbing &Heating · Ecoflex Energy Ltd · Ecoliving LTD · Ecoscene · Efficient Renewables Ltd · Eirgreen · Elite heating team Ltd · Energy Efficient Mechanical Solutions Ltd · Energy Saving Technologies Ltd T/A Energlaze · Energywise Savings Ireland Ltd · Fingal Renewables · Finlay EcoFit Tullamore Ltd · Finnegan & O'Neill Limited · Flynn Heating Services · FND Heating Ltd · FP Engineering and Construction Ltd · Frank Groome T/A Speedy Plumbing & Heating Service · Frank Moore Ltd · GB Plumbing & Heating · Grange Mechanical Limited · Green Energy Heating Solutions Limited · Greentherm Ltd. · Heat Doc Ltd · Heat Service Installation & Design Ltd. · Heat Tech Solutions Ltd · Hometherm Insulation Ltd · Hydrothermsolutions · J & D O'Brien Ltd · Jackie Kenny Plumbing · James O Connor Plumbing & Heating · JFK Plumbing and Heating Ltd · JJS Plumbing & Heating Limited · Joe Dunican Plumbing And Heating Ltd · Joe Hegarty Plumbing Ltd · Justin Colgan Ltd · Justin Hopkins Heating And Plumbing Ltd · K.Fitzpatrick plumbing & heating · Keith Nevin Plumbing & Heating Services Ltd · Kieran Fitzpatrick Plumbing & Heating Ltd · Larkfield Plumbing Contractors Ltd · Leinster Heatpumps · LVP Renewables Ltd · M & C Hybrid Energy Ltd · Marron Activ 8 Energies Ltd · Maynooth Plumbing And Heating Ltd · Mc Cormack Plumbing & Construction Ltd · Mc Elligott Heating & Plumbing Limited · McManamon Mechanical Services Ltd · Michael J. O'Neill Heating & Plumbing · Midland Heating and Plumbing Ltd · MMCM Plumbing Services · Monsoon Plumbing & Heating · Mullagh Heating And Plumbing Ltd · Newbridge Heating Centre Ltd · NGS Mechanical Services Limited · Niall Smith Energy Renewables Ltd · Nigel Dungan Plumbing & Heating · O Brien Bros Plumbing & Heating Ltd · ONG Heating and Plumbing Ltd · P.F Plumbing Heating & Maintenance Ltd · Paddy Brady Heating and Plumbing Ltd · Pat Caulfield Plumbing & Heating · Pat Corrigan Plumbing & Heating · Patrick Dempsey · Patrick F. O'Connor Limited · Patrick Kavanagh Plumbing & Heating Services · Patrick Moore Renewables · Paul McGrath T/A Venturi Heat Services · PMK Mechanical Ltd. · R.P. Plumbing And Heating · Ramor Renewable Heating and Plumbing · Rem Heat Ltd · Royal Renewables Ltd · RTS Heating & Cooling Services LTD · Solaregy T/A Sola · South Dublin Heating & Plumbing Ltd · Stephen Cullen · Stephen H Heating & Plumbing Ltd · TAF Plumbing Ltd · Thompson Plumbing and Heating · TM Plumbing & Heating Ltd · Walsh & Sheehan Ltd · Western Energy Systems · White Premier Construction Ltd · Wolfe Plumbing & Heating Services 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 Louth compares

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

Figure 1Published figure

151 solar hot water installers say they work in Louth; the median county has 118

Louth is 8th of 26. The most list Kildare and Wicklow (154); the fewest, Donegal (57). 26 One Stop Shops list Louth.

Louth151
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 Louth 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 Louth?: 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 Louth 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