How much does solar cost per kW in Ireland?

Across the 18 published euro prices here it runs from €600 to €2,620 per kW. Systems of 1 mw and over came in at €600 to €790 per kW. Systems under 20 kw came in at €1,320 to €2,620. A typical home system on this site works out at €1,890 to €2,050 per kW before the grant.

Why do bigger solar systems cost less per kW?

The fixed costs are spread over more panels. Design, grid paperwork, scaffolding, the inverter and the installer's travel cost much the same for 10 panels as for 20. On a very large roof or ground array the panels themselves become most of the bill.

Are these prices before or after grants?

It differs by source, and the table says which where the source does. Most are the full project cost before any grant. Where a source gave only an after-grant figure, no cost per kW is worked out.

Can I use these prices to check a quote for my house?

Only as a rough check. Almost all of these are farms and businesses, on bigger roofs, in different years, and some include a battery. For homes, use the price tables on this site: a 10-panel system is €8,300 to €9,000 before the grant.

What solar installations really cost in Ireland

27 named Irish farms, businesses and clubs have published what their solar panels cost. The cost per kW can be worked out for 21 of them and runs from €600 to €2,620 in the euro figures. The biggest systems cost the least per kW.

Prices last reviewed October 2026

How much does solar cost per kW at each size?

System size	Published prices	Cost per kW	Middle price
Under 20 kW	5	€1,320 to €2,620	€1,640
20 kW to 100 kW	5	€900 to €1,900	€1,540
100 kW to 1 MW	5	€1,000 to €1,520	€1,070
1 MW and over	3	€600 to €790	€680

These are euro prices only, as each owner or installer reported them. They span 2015 to 2026, and some include a battery or exclude VAT, so treat each band as a range and not an average.

What did each installation cost?

Site	Size	Cost stated	Per kW	Source
Aldi Ireland stores (programme)Business, 2025	6.3 MW	€5 million44 stores	€790	pv magazine
Arrabawn Co-op, NenaghBusiness, Tipperary, 2024	5.8 MW	€3.5 million	€600	TechBuzz Ireland
Liffey Meats, BallyjamesduffBusiness, Cavan	4.5 MW	€3 million to €3.1 millionmidpoint of €3 million to €3.1 million	€680	Agriland
Bombardier wing plant, BelfastBusiness, Antrim (NI), 2014	3.6 MW	around £3.5 million	£970	Downing
Causeway Hospital, ColeraineBusiness, Londonderry (NI), 2025	1.2 MW	£1.2 million	£1,000	Northern Health and Social Care Trust
Tayto Snacks, AshbourneBusiness, Meath, 2025	772 kW	€1.17 million	€1,520	ThinkBusiness
Hickey's Home Farm (Gerard Hickey)Farm, Louth, 2022	380 kW	€380,000	€1,000	Irish Farmers Journal
O'Shea Farms, PiltownFarm, Kilkenny, 2015	250 kW	€287,500 project (Interreg Europe summary, snippet only)	€1,150	Irish Farmers Journal
The Montenotte Hotel, CorkBusiness, Cork, 2026	140 kW	€150,000	€1,070	PV Generation
Carrickboy farm (Donal and Dermot Brady), ArdaghFarm, Longford, 2018	100 kW	Over €100,000	€1,000	Irish Farmers Journal
Nigel Flynn, ClonesFarm, Monaghan, 2019	50 kW	About €45,000 in 2019; about €30,000 for the 2024 expansionthe first 50 kW, in 2019	€900	Irish Farmers Journal
John and Una Dolan, FardrumFarm, Westmeath, 2022	50 kW	€60,000 plus VAT, no grantbefore VAT, with batteries	€1,200	Teagasc

Show 9 more prices

Site	Size	Cost stated	Per kW	Source
Ted O'Sullivan, BanshaFarm, Tipperary, 2023	40 kW	About €65,000 overallwith a battery	€1,630	Agriland
Fergal and Amy Coughlan, InnishannonFarm, Cork, 2025	32.4 kW	€50,000 before grant; €15,310 after TAMS grant and accelerated capital allowancebefore grant, with a battery	€1,540	Irish Farmers Journal
John and Rory McEvoyFarm, Laois, 2022	20 kW	€38,000, paid outright	€1,900	Irish Farmers Journal
Jackie and Stephen Hamilton, ColloneFarm, Armagh (NI), 2022	15 kW	£11,500 excluding VAT, no grantbefore VAT	£770	Irish Farmers Journal
Shane Hegarty, KilcockFarm, Meath, 2024	13.8 kW	€28,000	€2,030	Irish Farmers Journal
Kilanerin Community CentreSports club, Wexford, 2023	11.2 kW	€15,000	€1,340	SEAI
Cathal Moran, SkeoughvosteenFarm, Kilkenny, 2018	11 kW	€14,500 including inverter and buried cable, no grantwith a buried cable	€1,320	Irish Farmers Journal
J & M Dairies (John and Marguerite Ryan), GortnahoeFarm, Tipperary, 2020	9.5 kW	About €25,000	€2,620	Interreg Europe
Ticey Allen, NewportFarm, Tipperary, 2020	6.1 kW	€10,000 including VAT before grant; €6,000 after grantincluding VAT, before grant	€1,640	Irish Farmers Journal

Per kW figures are rounded to the nearest 10. The full record for each site, with its saving and payback where published, is in commercial solar projects in Ireland and farm solar case studies.

Which published prices do not compare?

6 more sites published a cost that cannot fairly be divided by the system size. The cost covers only part of the system, is after grants, or the source leaves the size or the scope of the work unclear.

Eli Lilly, Kinsale9.6 MW
Business · Cork · 2021
Cost stated
$5 million (phase 1 only, snippet)
Source: Greenvolt Next
PepsiCo, Little Island1.6 MW
Business · Cork · 2024
Cost stated
€2.4 million
Source: Echo Live
Shannon Airport1.2 MW
Business · Clare · 2025
Cost stated
€3.6 million
Source: The Shannon Airport Group
Andrew and Daniel McHugh27.7 kW
Farm · Longford · 2024
Cost stated
Around €24,000 after grants
Source: Irish Farmers Journal
Richard Starrett23.5 kW
Farm · Donegal · 2019
Cost stated
€15,525 for the 18 kW panels and 10 kW storage, with TAMS at 60% and VAT at 13.5% excluded
Source: Teagasc
Douglas Kinkade6.5 kW
Farm · Cavan · 2020
Cost stated
€11,000 for the first 21 panels (search summary, not confirmed in the text opened)
Source: Agriland

What does this mean for a home?

A home system is small, so it sits at the dear end per kW. On this site's price table a typical 10-panel (4.4 kWp) system costs €8,300 to €9,000 before the grant, which is €1,890 to €2,050 per kW.

Prices here come from news reports, Teagasc, SEAI and installers' own case studies, and each row names its source. Nothing has been estimated. Data last reviewed October 2026.

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