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Panasonic quit the solar panel business entirely in April 2025. Their EverVolt panels were manufactured by REC Group — so if you wanted Panasonic quality, the REC Alpha Pure-RX is the same technology at a higher wattage. Here's everything you need to know.
Exited
Business Status
Apr 2025
Exit Date
25 Years
Warranty
REC Alpha
Best Alternative
From pioneering HJT solar cell technology to exiting the market entirely — a 35-year journey that ended with fierce Chinese competition making premium-priced panels unsustainable.
SANYO Electric develops the Heterojunction with Intrinsic Thin Layer (HIT) solar cell technology in Japan.
SANYO ships first commercial HIT solar modules at 170W and 14.4% efficiency — groundbreaking at the time.
Panasonic Corporation acquires SANYO Electric, inheriting HIT technology and solar manufacturing in Japan and Malaysia.
Core HJT patents expire, opening the technology to competitors including REC Group, LONGi, and others.
Panasonic ends its solar cell manufacturing partnership with Tesla at the Buffalo, NY Gigafactory. Market share begins declining.
Announces closure of Malaysia and Japan solar panel factories. Shifts to OEM model with panels manufactured by REC Group.
Rebrands everything under EverVolt name. REC Group manufactures panels to Panasonic specs using the same HJT cell technology.
Panasonic discontinues entire EverVolt line — solar panels, batteries, inverters. Joins LG (2022) and SunPower (2024) as major residential solar exits.
Final date to enroll new systems on Panasonic's Daybreak monitoring platform. Only legacy warranty support remains.
Panasonic's HIT (Heterojunction with Intrinsic Thin Layer) technology — later marketed as HJT — was genuinely ahead of its time. Developed by SANYO in 1990, it combines crystalline silicon with amorphous silicon thin films to create a cell that outperforms traditional PERC cells in three critical ways:
Temperature coefficient of -0.24%/°C vs -0.34%/°C for PERC. Produces 10-15% more energy on hot summer days.
0.25%/yr degradation vs 0.45%/yr for standard PERC. After 25 years, an EverVolt panel still produces 92% of rated power vs 86% for PERC.
Near-zero LID means HJT panels produce at full rated power from day one, unlike PERC panels that lose 1-3% in the first year.
| Spec | HK2 (Flagship) | HK Series | H Series |
|---|---|---|---|
| Wattage | 430W | 410W | 410W |
| Efficiency | 22.2% | 22.2% | 22.2% |
| Temp Coefficient | -0.24%/°C | -0.26%/°C | -0.26%/°C |
| Cell Type | 132 half-cut HJT | 132 half-cut HJT | 132 half-cut HJT |
| Degradation | 0.25%/yr | 0.25%/yr | 0.25%/yr |
| Year 25 Output | 92% | 92% | 92% |
| Aesthetic | All-black | All-black | Black on white |
After Panasonic closed its own factories in 2022, every EverVolt solar panel was manufactured by REC Group under an OEM agreement. This wasn't a rebadging of generic panels — REC used the same HJT cell technology that Panasonic pioneered, in the same production lines that produce REC's own Alpha series.
This means if you were shopping for Panasonic panels because of their quality, you were already getting REC-manufactured panels. The REC Alpha Pure-RX 470W is not just “similar” to Panasonic — it's the same technology, from the same manufacturer, at a higher wattage.
Panasonic EverVolt HK2
430W
Discontinued — April 2025
REC Alpha Pure-RX
470W
Available — Same HJT technology, +40W more power
How did Panasonic's last panels stack up against what's available today? The REC Alpha matches or exceeds Panasonic in every category. Q CELLS wins on price. Maxeon wins on efficiency.
| Spec | Panasonic EverVoltDiscontinued | REC AlphaRecommended | Q CELLS | Maxeon 7 | Canadian Solar |
|---|---|---|---|---|---|
| Wattage | 430W | 470W | 415W | 475W | 435W |
| Efficiency | 22.2% | 22.6% | 20.9% | 24.1% | 22.0% |
| Temp Coefficient | -0.24%/°C | -0.26%/°C | -0.34%/°C | -0.27%/°C | -0.30%/°C |
| Cell Type | HJT half-cut | HJT gapless | PERC half-cut | IBC | TOPCon n-type |
| Degradation | 0.25%/yr | 0.25%/yr | 0.45%/yr | 0.25%/yr | 0.40%/yr |
| Year 25 Output | 92% | 92% | 86% | 92% | 87.4% |
| Warranty | 25-yr product + labor | 25-yr product + labor | 25-yr product, 12-yr labor | 40-yr product + power | 25-yr product, 12-yr labor |
| Price/Watt | N/A (discontinued) | $1.30-$1.50/W | $0.90-$1.10/W | $1.50-$1.80/W | $0.85-$1.05/W |
| Status | DISCONTINUED | Available | Available | Available | Available |
NuWatt installs all three of these alternatives. Each is compatible with Enphase IQ8 microinverters, which we use exclusively.
REC literally manufactured Panasonic's EverVolt panels. The Alpha Pure-RX uses the same HJT cell architecture but with a higher wattage (470W vs 430W) and gapless cell connections. Same 0.25%/yr degradation, same 25-year warranty coverage. If you wanted Panasonic quality, this is Panasonic quality.
Q CELLS delivers solid 20.9% efficiency at 30-40% lower cost per watt than Panasonic priced. The trade-off is higher degradation (0.45%/yr vs 0.25%/yr) and a less comprehensive warranty. Excellent choice for larger systems where budget matters more than per-panel output.
Maxeon 7 uses IBC (interdigitated back contact) cells for 24.1% efficiency — the highest in residential solar. With a 40-year warranty and 0.25%/yr degradation, it's the ultimate premium pick. Priced higher than Panasonic was, but delivers more watts per square foot.
Panasonic's 25-year AllGuard warranty covers product defects, performance guarantees (92% at year 25), parts, and labor. Panasonic Corporation is a $60B+ conglomerate — they have the financial capacity to honor these warranties for the full 25-year term. Claims can be filed at solar.na.panasonic.com/support.
Since Panasonic no longer manufactures panels, warranty claims requiring a panel replacement may result in an equivalent third-party panel or cash-value equivalent rather than an identical EverVolt unit. This is standard practice when manufacturers exit (LG followed the same approach in 2022). Consider adding third-party warranty protection (like Solar Insure) for extra security.
Panasonic's Daybreak monitoring platform stopped enrolling new systems after December 31, 2025. If you have an existing Panasonic system without monitoring, NuWatt can set up independent monitoring through Enphase Enlighten or a third-party platform.
$0 Federal Credit
Section 25D expired December 31, 2025. Homeowners who purchase solar with cash or a loan receive zero federal tax credit in 2026. State rebates still apply.
30% ITC Available
The financing company (not you) claims Section 48/48E at 30% for projects beginning construction before July 4, 2026. Savings are passed to you as lower monthly payments.
NuWatt Propel: Our third-party ownership program lets you go solar with $0 down and access the 30% commercial ITC through our financing partner. You get premium panels (REC Alpha, Q CELLS) installed by NuWatt's crew with predictable monthly payments lower than your current electric bill. Learn more about Propel
NuWatt exclusively installs Enphase IQ8 microinverters. Every panel we recommend as a Panasonic alternative is fully compatible:
REC Alpha Pure-RX 470W
Paired with: Enphase IQ8HC
None — IQ8HC handles 470W cleanly
Q CELLS Q.PEAK DUO 415W
Paired with: Enphase IQ8M / IQ8HC
None — well within IQ8M/HC range
Maxeon 7 475W
Paired with: Enphase IQ8HC
Minimal — <2% clipping at peak
Canadian Solar 435W
Paired with: Enphase IQ8HC
None — excellent pairing
Jinko Tiger Neo 435W
Paired with: Enphase IQ8HC
None — optimized match
Silfab Elite 420W
Paired with: Enphase IQ8M / IQ8HC
None — clean pairing
NuWatt installs REC Alpha, Q CELLS, Canadian Solar, Jinko, Silfab, and Maxeon — all paired with Enphase IQ8 microinverters. Get a free quote with transparent pricing and no hidden fees. We install in MA, CT, RI, NH, ME, VT, NJ, PA, and TX.