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Best Solar Installers in Mayo (2026)

Data compiled by Solar Info editorial teamUpdated 8 May 2026

10 SEAI-registered solar panel installers featured for Mayo. Selection is based on SEAI registration, Google reviews, home-county presence, word of mouth, and the feeling amongst Irish solar Facebook groups. 10 have their head office in Mayo. The list below is randomised, not ranked 1-10. Every one of these 10 has earned its place. A typical 4 kWp system in Mayo generates around 3,364 kWh per year.

Fact-checked by John Rooney, Solar Energy Editor. Editorial policy

How we selected these installers

  • SEAI registration is required. Only installers on the public SEAI register are eligible. homeowners need this to claim the €1,800 grant.
  • Home-county presence first. Installers headquartered in Mayo fill the list before installers from neighbouring counties.
  • Google reviews rating and volume. Score = average rating × log10(review count + 1). This rewards consistent ratings across many jobs over a single perfect review.
  • Word of mouth and Facebook groups. We monitor the major Irish solar PV Facebook communities for which installers homeowners actually recommend, and which ones come up for the wrong reasons.
D

Donoghue and O'Neill Electrical Ltd

5.0(4 Google reviews)
SEAI RegisteredDomesticCommercial

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All Mayo installers

The full directory of every solar installer serving Mayo.

SEAI grant in Mayo

How the €1,800 SEAI solar PV grant works in Mayo.

Solar panel costs in Mayo

2026 pricing, output, and payback for Mayo.

This page is maintained editorially by Solar Info. We update the list quarterly as new review data and SEAI registrations come in. Spotted an error? Let us know.