Despite regular headlines about market slowdowns, solar PV in Ireland continues to grow at pace.
2025 proved to be another strong year for installations across domestic, commercial, and agricultural sectors — and importantly, it showed that Ireland is still at an early stage of its solar rollout.
For installers, this matters. The figures show that while a lot has been achieved, the majority of potential installations are still ahead of us.
Solar PV Installations Completed in Ireland in 2025
2025 marked the highest year on record for domestic solar PV installations supported by SEAI grants.
- Over 34,000 domestic solar PV systems were installed with SEAI grant support during 2025 alone
- This represented a year-on-year increase compared to 2024
- Thousands of additional installations were completed across commercial buildings, farms, schools, and community facilities
Domestic installations continue to make up the largest share of the market, driven by:
- Rising electricity costs
- Continued grant support
- Increased homeowner awareness
- Improved system affordability
For installers, this translated into sustained demand throughout the year — particularly for standard rooftop systems requiring NC6 notifications and grant paperwork.
Total Solar PV Installed in Ireland to Date
By the end of 2025, Ireland reached several important milestones:
- Over 2 GW of total installed solar capacity nationwide
- More than 1 GW of that capacity is rooftop solar, installed on homes, farms, clubs, schools, and businesses
- Solar PV is now a mainstream technology rather than a niche renewable
This growth has been achieved in a relatively short timeframe. Just a few years ago, rooftop solar adoption was limited. Today, it is part of everyday installation work for electricians and PV installers across the country.
How Much Potential Is Still Left?
While the growth figures are strong, Ireland is still far from saturated.
Key points installers should keep in mind:
- Ireland has hundreds of thousands of suitable residential rooftops that do not yet have solar PV
- A large proportion of commercial and agricultural buildings remain untapped
- National climate and energy targets require significantly more solar capacity by 2030
Compared with other European countries, Ireland’s per-capita solar deployment remains relatively modest — meaning the runway for future installs is long, not short.
Even at the current pace, annual installation figures would need to increase substantially to meet long-term renewable electricity targets.
What This Means for Solar Installers
For installers, the message from the data is clear:
- Demand has not peaked
- Domestic installs continue to grow year-on-year
- Commercial and agricultural solar is expanding steadily
- Grant support remains in place for 2026
- Grid connection and compliance processes are becoming more important, not less
As volumes increase, so does the administrative burden around:
- SEAI grant submissions
- NC6, NC7, NC8 and NC5 ESB processes
- PV performance documentation
- Declaration of Works accuracy
- Homeowner and client documentation
Installers who can scale efficiently — without being slowed down by paperwork — are best positioned to benefit from the continued growth.
Looking Ahead
2025 showed that solar PV in Ireland is firmly established, but also that the industry is far from mature.
For installers, there is still:
- Significant domestic opportunity
- Growing commercial and farm demand
- Long-term work tied to national energy targets
The opportunity is not disappearing — it is evolving.
👉 Need help with SEAI paperwork or ESB submissions? We can help
Solar Admin Ireland supports solar installers with SEAI grant paperwork, ESB notifications, and compliance documentation — helping installations move smoothly from completion to approval.