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 Donegal?

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 Donegal 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 panel installers in Donegal

285 companies on SEAI's register say they do solar panels in Donegal. Only work by a registered company gets the SEAI grant.

10 are based in Donegal; the other 275 cover it from elsewhere.
The grant for a semi-detached house is €1,800. SEAI’s middle price last year was €9,500.
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.

Solar panels fitted to a dark tiled pitched roof under grey cloud, next to a red-tiled neighbour. — Solar panels on a dark tiled roof.
A roof with solar panels on it · Budget Bizar · Pexels License

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Based in Donegal

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

Efficient Renewables LtdHeat pumpHeating controlsSolar hot waterSolar panelNationwide · SEAI no. 16225Based in Donegal.
Ferm Eng LtdAttic insulationHeat pumpHeating controlsInternal wall insulationSolar hot waterSolar panelBased in Donegal · and 8 other counties · SEAI no. 10112Based in Donegal.
Grants Electrical Services LTDSolar panelBased in Donegal · Solar register no. 50128Based in Donegal.
Kelly Electrical Services LtdSolar panelBased in Donegal · Solar register no. 50591Based in Donegal.
Martin Diver Electrical LTDSolar panelBased in Donegal · Solar register no. 50538Based in Donegal.
McCaffrey Mechanical Services Ltd.Heat pumpHeating controlsSolar panelBased in Donegal · serves Connacht and Ulster · SEAI no. 17579Based in Donegal.
Paul GallagherSolar panelBased in Donegal · Solar register no. 50737Based in Donegal.
Penrose Electrical LtdHeat pumpSolar panelNationwide · SEAI no. 18140Based in Donegal.
Shaun McCauley ElectricalSolar panelBased in Donegal · Solar register no. 50642Based in Donegal.
True North Electrical LtdSolar panelBased in Donegal · Solar register no. 50526Based in Donegal.

Also cover Donegal from elsewhere (275)

These told SEAI they cover the province Donegal 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) · Churchfield Home Services (OSS) · OHK Energy LTD (OSS) · 1st Choice Electrical Services Limited · 3D Systems Limited · A & B = New Energy Limited · A1 Solar · AB Electrical · Abhaile Solar and Electrical Ltd · Activ8 Solar Energies · AD Electrical Services · Agri Solar Specialists Ltd · AH Electrical Services & More · AK solar · All Solar Energies Ireland · Alternative Energy · Alternative Energy Ireland · Alternative power Generation T/A SDES · Anthony Scully Solar · Apex Workforce Ltd · Armour renewables Ltd T/A Leinster Energy · BEP Energyable Limited · Bespoke Solar PV Installations Ltd · Blackwell Energy Ltd · Blue Sky Solar Ltd · Blue Solar PV Limited · Boyne Solar Ltd · Brian Leavey Electrical · BTS Renewables Ltd · Caillin Wrynn · Carraher Solar Limited · Castlegale Electrical Ltd · CC Renewables LTD · CH Services · Charles Gallagher Electrical Ltd · Circet Install Limited (KN Install Limited) · Claddagh Electrics Limited · Clear Sky Energy Ltd · CMC Electrical Contracting LTD T/A Solar 24 · CMD Electrical Ireland Ltd · Cok Electrical & Renewables Ltd · Colum Gallagher Electrical & Solar · Connex Electrical Services · Coolagh Agri Import Export Ltd · Copper Coast Renewables · CR Solar · Cremin Solar Energy · Cross Border Electrical Ltd · Cummins Electrical and Renewables · CV Electrical Ltd · CVS Electrical · D.O.C Electrical · DAC Solar Systems T/A Stephen Kennedy Electrical Ltd · Darragh Twomey Electrical LTD · David O'Mahoney Electrical Services Ltd · DC Energy Solutions · DE Electrical and Solar Ltd · Dermot McGrath Electrical Ltd · Derry Brosnan Electrical and Construction Services Ltd · Dial an Electrician Ltd · Divers Educational Supplies T/A Celtic Renewables · DML Electrical Contractors Ltd · DND Electrical T/A Doran & Durnin Electrical Ltd · DNL Electrical Ltd · DPR Solar Services Limited T/A Solar Services Ireland · DR Solar and Electrical Services Ltd · Duleek Energy Centre · Eccles Electrical Ireland Limited · Eco Home Improvements · Eco Revival Renewables · Ecoplex Energy Solution LTD · Ecosol · EGLX Ltd T/A EG Electrical · Eire renewables · Eirevolt Energy Limited · Eirinn Electrical Solutions Ltd · EKR Solar Ltd · Elecko Ltd · Element Electrical · Emmet Keeshan Electrical · Encom Energy Ireland Limited · EnergieXPro · Energy Freedom Systems · Energy Saving Technologies Ltd T/A Energlaze · Energysmart Renewables Limited · ePower · Evergreen Electrical Ltd · Evolve Eco Solutions Ltd · Fanning Electrical and Solar Ltd · FCB Ltd- ASA Solar · Fennor Developments · Fireco Alarms Ltd - C & R Renewables & Electrical · Fokearn Energy Solutions LTD · FT Energy Ltd · Fuinneamh Renewables Ltd · Future Renewables Energy Systems Limited · Gaffney Electrical Fire and Security Ltd · Gary Warde Electrical LTD · Gavin Walker Electrical Contractors LTD · Get Switched Ltd · Gilroys Green Energy LTD · Glas Energy · Glenfield Renewables Ireland LTD · GMC Electrical · Go Solar · Goodship Electrical Contractors · Gosecure Limited T/A GoKonnect Solar · Green Air Technologies Ltd · Green Energy Ireland · Green Powered Systems Limited · Greenside · Greentricity Ltd · Greenway Solar and Robotics Ltd · Grian52 Ltd · Grid Solar Limited · GTEC Sparks Ltd · Hanrahan Renewable Energy · Hardiman Electrical · Harvey Solar Services Ltd · HD Renewable Energy · HDPV Ltd · Hi-Line Energy Solutions LTD · Home Building Solutions T/A HBS Elegant build Ltd · House2home Retrofit LTD · IDEAL Solar and Electrical Ltd · Irish Energies · James Brennan Electrical Contractor Ltd · Jamie Harley Electrical Ltd · Jason Fahy Heating · JC Electrical and Security Ltd · JE Solar Ltd · Joe Sav electrical systems LTD · Joe Thompson Electrical Ltd · JWE Electrical Ltd · K+P electrical · KB Electrical NI LTD · Kell NFC t/a NFC Energy · Keogan Electrical Contractors · Kieran Doherty Electrical · Kilcock Solar · Klass Home Energy Ltd. TA Klass Solar · KM Electrical · KRDC Electrical LTD · KTB Electrical Ltd · Laltec Electrical LTD · Leinster Electrical Contracts Limited · Lennon Solar · Light Energy Ireland Ltd · Link Pro Electrical Ltd · Local Power Ltd · LS ELECTRONICS LTD · Lumen Engineering Limited T/A Lumen Solar · Lux Electrical Contractors Limited · LVP Renewables Ltd · Lynch Electrical & Renewables Ltd · Mal Property Maintenance · Marval Power Ltd · Mastertech Group Ltd · Max Renewable Energi Ltd · McLaughlin Electrical Ltd · Meade & Madden T/A Glentech Electrical · Mid West Renewable Energy Ltd · Midwest Fire & Security Ltd · Mitros Solar Ltd · MMG Electrical Ltd · Moy Solar · Mr Sparkx Electrical Services Ltd · Munster Solar · Murphy Solar PV + Electrical Contractor Ltd · Murray and McEvoy Ltd · My Power Ltd · MySolar · Nationwide Energy Solutions LTD · Netherbrook Ltd · NMK Electrical Ltd · North West PV IRL Ltd · Nualaiochtai Miotal Teoranta TA Solar Structures · Nuarc Energy Ltd · Nusolas Ltd · NZEB Technologies Ltd · O'Neill & Sons Electrical Services · O'Neill Energy LTD · OCM Energy · OFE Solar & EV · optimum ucl · Padraig Burns Electrical Services · Pawel Galarowicz · Peter Burke Electrical Limited · Peyton Electrical Ltd · Physalia Ltd Ta Ecoaer · Premier Energy · Prime Solar Ltd · PureVolt Limited · PV Generation Ltd. · PV Green · PV Solar Ireland · PV Solar Systems · QMAC Contracting Ltd T/A QMAC Electrical & Energy Solutions · R Fitzgerald Electrical Services Ltd · Raymond Carolan Electrical Limited · Real Solar Limited · Reddington Group · REenergy Electrical · Rend Master Ltd · Renewables Ireland · RER Electrical · Resolute Engineering Group LTD · Ronan McGrath Electrical · Rosa Electrical Ltd · Rosehill Renewables Ltd · Roslem Solar Energies T/A David Connellan Electrical · RTG Electrics · Saunderson PV Solar · SB Electrical · Sean Egan Electrical · Sean Gallagher · Sean Hardiman Electrical and Solar PV · Sean McCarthy Electrical · Secto Services Limited · Shane Scully Electrical · SK Green Energy Technologies · Skyline Solar Ltd · Slix Limited · Solar Elite · Solar Energy Solutions · Solar Generation LTD · Solar Green PV LTD · Solar Installers Ireland · Solar Nexus · Solar Path · Solar Power Ireland BK Ltd · Solar Precision LTD · Solar Works Electrical Contractors Ltd · Solarcraft Ltd · Solaregy T/A Sola · Solaris Green Energy · Solarise Ltd · Solarsmart Energy LTD · Solarsource.ie · SOLARspan · Solarstream Limited · SolarVolt Ltd · Solarwise Energy Ltd · Solgrid Limited · Solis Green Energy Ltd · Solmatix Ltd · Solstice Renewables Solutions LTD · SP Energy · SSP Electrical Limited · Start Solar Ireland Ltd · Stefan Callaghan Electrical · Sunergy Solar · Sunvolt limited · SwitchElectrical Ltd · T MCNally Electrical Services · Tirconaill Renewables LTD · Tirconnaill Contracts Ltd · Titan Electrical Ltd · TMC Complete Electrical Limited TA Solar Pv Energy · TRE Energy (IRL) Limited · Treacy Solar · Tungsten Engineering Ltd · Vercom Electrical T/A Solar Logic · Verde Energy Group · Verde Remediation Services Ltd · Vision Solar · Wattmasters Electrical Ltd · WattSolar · Willie Cronly Electrical · WPM Construction Limited · WRB Energy LTD · Zensol Limited · Zetta Home 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.

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The detail

How Donegal compares

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

Figure 1Published figure

285 solar panel installers say they work in Donegal; the median county has 319

Donegal is 25th of 26. The most list Dublin (363); the fewest, Monaghan (278). 5 One Stop Shops list Donegal.

Donegal285
The median county319
Most: Dublin363
Fewest: Monaghan278

Each bar counts companies on SEAI's register that list the county for solar panels. 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 Donegal ones: SEAI does not publish prices by county. SEAI rule

On a semi-detached house, SEAI's middle price of €9,500 less the grant leaves €7,700 to pay.

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 Donegal?: 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 Donegal 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