Commercial Solar Panels in Mayo
Businesses in Mayo can cut electricity costs by 30–50% with commercial solar panels. The SEAI Non-Domestic Microgeneration Grant (NDMG) covers up to €162,600 for systems up to 1MWp, and Mayo generates approximately 841 kWh per kWp installed — making solar a strong investment for local businesses.
From businesses, light industry, hospitality, and retail, commercial solar panels in Mayo typically pay for themselves in 5–7 years with annual ROI of 10–15%.
Last updated March 2026
Why Mayo businesses are switching to solar
Mayo is home to businesses, light industry, hospitality, and retail. These sectors typically have high daytime electricity consumption, which aligns perfectly with solar generation patterns. Businesses that consume most of their electricity during working hours see the fastest payback on commercial solar installations.
With 1,105 sunshine hours per year and 841 kWh generated per kWp installed, Mayo offers solid conditions for commercial solar. The combination of NDMG grant funding, ACA tax relief, and rising electricity prices makes the business case compelling for businesses across Mayo.
Commercial solar panel costs in Mayo
Commercial solar panel costs in Mayo depend on system size. Prices include supply and installation. Actual costs vary by roof type, access, and installer. See our full commercial solar costs breakdown for more detail.
| System Size | Gross Cost (est.) | NDMG Grant | Net Cost (est.) | Annual Generation |
|---|---|---|---|---|
| 20 kWp | €18,000–€24,000 | €6,000 | €12,000–€18,000 | ~16,820 kWh |
| 50 kWp | €40,000–€55,000 | €12,000 | €28,000–€43,000 | ~42,050 kWh |
| 100 kWp | €70,000–€100,000 | €22,000 | €48,000–€78,000 | ~84,100 kWh |
| 200 kWp | €130,000–€180,000 | €42,400 | €88,000–€138,000 | ~168,200 kWh |
| 500 kWp | €300,000–€400,000 | €87,400 | €213,000–€313,000 | ~420,500 kWh |
Generation figures based on Mayo's local yield of 841 kWh/kWp. Costs are estimates and may vary by installer and site conditions.
NDMG grant for businesses in Mayo
The SEAI Non-Domestic Microgeneration Grant (NDMG) is available to all businesses in Mayo installing solar PV systems up to 1,000 kWp. The grant is tiered:
- €2,400 for the first 6 kWp
- €300/kWp for capacity between 6–30 kWp
- €150/kWp for capacity between 30–1,000 kWp
This means a 50 kWp system in Mayo qualifies for approximately €12,000 in grant funding, while a 200 kWp system receives around €42,400.
Read our full guide on the NDMG grant application process including eligibility, documentation, and timelines.
ROI on commercial solar in Mayo
Commercial solar installations in Mayo typically deliver a payback period of 5–7 years, with annual returns of 10–15% over the system's 25–30 year lifespan. Key factors that affect ROI for Mayo businesses:
- Self-consumption rate — businesses that use most electricity during daylight hours see faster payback
- System size vs. demand — right-sizing the system to match your usage maximises returns
- ACA tax relief — 100% Accelerated Capital Allowance lets businesses write off the full cost against tax in year one
- Export income — surplus electricity can be sold back to the grid under the Clean Export Guarantee
For a detailed breakdown including worked examples, see our commercial solar ROI analysis.
Find commercial solar installers in Mayo
Compare SEAI-registered solar installers covering Mayo on our directory. We recommend getting at least three quotes for any commercial solar project and checking that installers have experience with systems of your required size.
Commercial solar FAQs for Mayo
Commercial solar panels in Mayo cost €800–€900 per kWp installed depending on system size. A 50 kWp system for a Mayo business typically costs €40,000–€55,000 before the NDMG grant and €28,000–€43,000 after. Larger systems benefit from economies of scale, with costs per kWp decreasing for 100 kWp+ installations.
Yes. Any business in Mayo can apply for the SEAI Non-Domestic Microgeneration Grant (NDMG) for solar PV systems up to 1,000 kWp. The grant covers up to €2,400 for the first 6 kWp, then €300/kWp for 6–30 kWp, and €150/kWp for 30–1,000 kWp, to a maximum of €162,600. You must use an SEAI-registered installer.
You can find SEAI-registered commercial solar installers covering Mayo on our installer directory at solarinfo.ie/installers/mayo. We recommend getting at least three quotes and checking that the installer has experience with commercial-scale systems similar to your project size.
Commercial solar in Mayo typically delivers a 5–7 year payback and 10–15% annual ROI. Mayo generates approximately 841 kWh per kWp installed, and businesses with high daytime electricity usage see the fastest returns. The NDMG grant and ACA tax relief further improve the business case.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Sources
- SEAI — Non-Domestic Microgen Scheme (NDMG)
- SEAI — Accelerated Capital Allowance
- Revenue — Accelerated Capital Allowances
Last updated: March 2026
John Rooney is the founder of Solar Info and has been covering the Irish solar energy market since 2023. He fact-checks all content against official SEAI data and maintains relationships with SEAI-registered installers across Ireland.