Solar Panel Brands Installed in Ireland
The Irish residential solar market is dominated by a handful of Tier 1 manufacturers. These are the brands you'll most commonly see quoted by SEAI-registered installers.
| Brand | Origin | Typical Panel | Efficiency | Product Warranty | Performance Guarantee |
|---|---|---|---|---|---|
| Trina Solar | China | Vertex S+ 440W | 21.8% | 25 years | 87.4% at 30 years |
| JA Solar | China | DeepBlue 4.0 440W | 22.0% | 25 years | 87.4% at 30 years |
| Longi | China | Hi-MO 6 440W | 22.3% | 25 years | 87.4% at 30 years |
| Canadian Solar | Canada/China | HiKu7 440W | 22.0% | 25 years | 87.4% at 30 years |
| SunPower/Maxeon | USA/Singapore | Maxeon 6 430W | 22.7% | 40 years | 88.3% at 40 years |
| Hyundai | South Korea | HiE-S 430W | 21.5% | 25 years | 86% at 25 years |
What Actually Matters When Choosing
1. Installer quality matters more than panel brand
A well-designed and properly installed system with mid-range panels will outperform a poorly installed system with premium panels. Choose your installer first, then discuss panel options with them.
2. Warranty terms
All Tier 1 brands offer 25+ year product warranties and performance guarantees. SunPower/Maxeon leads with 40 years but at a premium price. For most homeowners, the standard 25-year warranty is more than adequate.
3. Efficiency in Irish conditions
Panel efficiency matters most when roof space is limited. If you have a large south-facing roof, a slightly less efficient but cheaper panel gives better value. If your roof is small or partially shaded, higher efficiency panels extract more power from the available space.
A BER is the starting point for most energy upgrades and grant applications. Homerating.ie has been assessing Irish homes since 2009, with fast turnaround in Dublin and nationwide coverage. Book a BER with Homerating.ie →
Frequently Asked Questions
For most homeowners, the difference between top-tier brands is small. All major brands offer 25+ year warranties and similar efficiency. Your installer's quality and system design matter more than the panel brand.
Most residential panels in Ireland are now 400–450W. Larger panels mean fewer panels needed for the same output, which saves on installation time and mounting hardware.
The vast majority of solar panels installed worldwide (including in Ireland) are manufactured in China. Trina, Longi, JA Solar, and Canadian Solar are global Tier 1 manufacturers with decades of track record and bankable warranties.