Panasonic Solar Panels Ireland: EverVolt HJT Review & What Happened
Panasonic was one of the most respected names in solar — a heritage Japanese maker whose heterojunction (HJT) panels set the benchmark for premium quality. But in April 2025 Panasonic announced it was leaving the solar business entirely. This is our independent, honest look at what the Panasonic EverVolt range was, what existing Irish owners should know, and the HJT alternatives worth considering. If you are shopping new, see our solar panel brands hub or compare current options like LONGi and Jinko.
Quick Answer
Panasonic no longer sells solar panels. On 28 April 2025 it announced it was discontinuing its solar panel and battery business worldwide. The heritage EverVolt HJT range was a premium product — around 22.2% efficiency, 420–430W, and a 25-year warranty. You cannot buy Panasonic panels new, but Panasonic has committed to honouring existing warranties. Owners should keep their paperwork and consider HJT alternatives like REC Alpha.
What Happened to Panasonic Solar Panels?
Panasonic was a heritage premium Japanese panel maker. For years its heterojunction (HJT) technology — sold first under the legacy HIT line and later as EverVolt — was regarded as one of the best residential modules money could buy, prized for its low temperature coefficient, strong low-light yield, and long-term reliability.
On 28 April 2025, Panasonic announced it was discontinuing its solar panel and battery business. That means Panasonic no longer manufactures or sells new solar panels. We do not recommend trying to source new Panasonic panels, and this page is an editorial heritage reference rather than a buying recommendation. Panasonic has stated it will continue to support existing installations and honour product warranties — so Irish owners with Panasonic panels on the roof should keep their installation and warranty paperwork safe.
2025
Solar exit announced
HJT
Cell technology
Japan
Heritage brand
25 yr
Warranty support
The Panasonic EverVolt & HIT Range
Across its solar history Panasonic built its reputation on heterojunction cells, which layer thin amorphous silicon onto an N-type crystalline wafer. The result was a panel that ran cooler and held output better in real-world conditions. Below are the lines Irish owners are most likely to have on their roofs.
EverVolt HK2 (final series)
Panasonic's last flagship HJT module. Around 22.2% efficiency and roughly 420–430W, with a 25-year product, performance, parts and labour warranty.
EverVolt (earlier HJT)
The mid-life EverVolt range that replaced the HIT name. Still HJT-based with a low temperature coefficient and strong warranty terms.
HIT (legacy line)
The original Panasonic heterojunction panels. Many older Irish installs use HIT modules — reliable performers but now long out of production.
Panasonic EverVolt HK2 Specifications
These figures describe the final EverVolt HK2 series. They are listed here for reference only — the panels are no longer manufactured.
| Specification | Value |
|---|---|
| Series | EverVolt HK2 |
| Wattage | Around 420–430W |
| Cell Technology | Heterojunction (HJT), N-type wafer |
| Efficiency | Up to ~22.2% |
| Degradation Rate | ~0.25% per year (after year 1) |
| Year-25 Output | ~92% of rated power |
| Product Warranty | 25 years |
| Performance Warranty | 25 years |
| Parts & Labour Warranty | 25 years (where applicable) |
| Temperature Behaviour | Low temperature coefficient (typical of HJT) |
| Availability | Discontinued — not sold new |
HJT Alternatives: LONGi & REC Alpha
With Panasonic gone, Irish buyers who want the qualities the EverVolt was known for — cool running, strong low-light yield, premium warranties — should look at current HJT and high-tier panels. REC Alpha is the closest like-for-like HJT option, while LONGi offers a strong high-efficiency alternative at better value.
| Feature | Panasonic EverVolt (heritage) | REC Alpha (HJT) | LONGi |
|---|---|---|---|
| Cell technology | HJT heterojunction | HJT heterojunction | N-type / TOPCon |
| Efficiency | Up to ~22.2% | Around 22%+ | Around 22%+ |
| Temperature behaviour | Very low coefficient | Very low coefficient | Low coefficient |
| Warranty | 25 years (legacy support) | Long product & performance terms | Long product & performance terms |
| Availability in Ireland | Discontinued — not sold new | Available via installers | Widely available |
| Positioning | Premium heritage | Premium HJT | High-efficiency value |
Verdict: Panasonic EverVolt is no longer a buying option — it has been discontinued. If you specifically want HJT, REC Alpha is the natural successor and retains the cool-running, low-light strengths Panasonic was admired for. If you care more about efficiency-per-euro than the HJT badge, LONGi is the better-value choice. Costs vary by system size — see our solar panels cost guide for Irish pricing.
Panasonic Solar Panels: Frequently Asked Questions
Can you still buy Panasonic solar panels in Ireland?
No. Panasonic announced on 28 April 2025 that it was discontinuing its solar panel and battery business worldwide. It no longer manufactures or sells new panels, so you cannot buy Panasonic solar panels new in Ireland. If you want a similar premium HJT panel, look at REC Alpha.
Why did Panasonic stop making solar panels?
Panasonic exited the solar business in April 2025 as part of a wider restructuring, stepping back from manufacturing and selling its own-brand panels and home batteries. It was a strategic business decision rather than a fault with the panels, which were widely regarded as high quality.
Are my existing Panasonic solar panels still under warranty?
Yes. Panasonic has committed to continuing support for existing installations and honouring product warranties. The final EverVolt HK2 series carried a 25-year product and performance warranty with around 92% output at year 25. Keep your installation and warranty paperwork safe and contact your installer if you have a claim.
What is HJT solar cell technology?
HJT, or heterojunction, layers thin amorphous silicon on top of an N-type crystalline silicon wafer. This gives a very low temperature coefficient and good low-light yield, meaning the panels run cooler and hold output well in real-world conditions. Panasonic's EverVolt and legacy HIT panels used HJT cells.
What should Irish owners replace Panasonic panels with?
If a panel fails outside warranty or you are expanding a system, REC Alpha is the closest HJT alternative and keeps the cool-running, low-light strengths Panasonic was known for. LONGi and Jinko are strong high-efficiency options at better value if you do not need HJT specifically.
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Jinko Solar Panels Review
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Mono, poly, bifacial, TOPCon, HJT, IBC and more compared.
Sources
- Panasonic Solar — Product Information — solar.na.panasonic.com
- SEAI — Solar Energy for the Home — seai.ie
Last updated: June 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
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.
Looking for a Panasonic Alternative?
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