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NuWatt designs, installs, and manages solar, battery, heat pump, and EV charger systems across 9 states. One company, one warranty, one point of contact.
Get a Free QuoteQuick Answer
Panasonic discontinued its original HIT (Heterojunction with Intrinsic Thin-layer) solar panel product line in 2023. Panels sold today under the "Panasonic EverVolt" brand are a license arrangement — the cells are produced by a third-party manufacturer and the Panasonic brand is applied. Warranty claims route through the license holder, not Panasonic Corporation. If you want a genuine HJT panel with stable parent-company backing, NuWatt installs REC Alpha Pure-RX 470W.
Panasonic EverVolt is a brand license, not a Panasonic product. The cells are third-party and the warranty routes through the license holder, not Panasonic Corporation. REC Alpha Pure-RX 470W is a genuine HJT panel at a similar price with a stable, identifiable warranty path back to Reliance Industries.
Panasonic Corporation (the Japanese electronics giant) discontinued its original HIT solar cell product line in 2023. The company exited in-house solar panel manufacturing.
Panels sold today under the "Panasonic EverVolt" brand are a license arrangement. The "Panasonic EverVolt" name is licensed to a partner who sources cells from third-party manufacturers and assembles/markets the panels. These are NOT the same HIT cells that Panasonic originally produced in Japan.
Warranty claims on EverVolt panels route through the license holder, not Panasonic Corporation. If you assume you’re buying a panel backed by a $70B+ Japanese conglomerate, you should know the actual warranty contract is with a much smaller US licensee.
The cell source for any given EverVolt batch is not publicly disclosed on a per-production-run basis. For commercial ITC projects, this makes FEOC (Foreign Entity of Concern) classification difficult without a written cell-origin declaration from the reseller.
REC Alpha Pure-RX 470W is a genuine HJT panel manufactured in REC’s own facilities in Singapore and Norway, backed by Reliance Industries (public since 1973, $100B+ revenue). If you want the HJT technology benefit with a clear warranty path, REC is our recommendation.
The Brand Stability Question
Brand Stability
Rebranded 3rd-party cells, not original Panasonic HIT
Our assessment
EverVolt is a brand license arrangement. The cells in EverVolt panels are not produced by Panasonic — the brand is licensed to a partner who sources cells from other manufacturers. Warranty claims route through the license holder, not Panasonic Corporation. Users assuming they are buying genuine Panasonic panels should be aware of this distinction.
Rating current as of 2026-04-09
Federal ITC & Domestic Content Adder
For commercial installs, the panel’s country of manufacture and ownership structure directly determine ITC eligibility and whether you qualify for the 10% domestic content adder. Here’s the honest assessment for Panasonic EverVolt EverVolt HK 430.
Federal ITC & Domestic Content
FEOC status unclear — verify with tax pro
Details
FEOC status depends on the actual cell source used by the license holder, which is not publicly disclosed on a per-batch basis. For commercial ITC projects, request a written cell-origin declaration from the reseller before specifying EverVolt.
Informational only, not tax advice. Federal ITC qualification and domestic content adder eligibility depend on project-level analysis by a qualified tax professional.
Do the math yourself
These tools are pre-configured to the Panasonic EverVolt panel you came to this page for. Change the state, roof config, system size, rate growth, and ownership length — then compare against our alternative.
Live calculation — your climate, your roof, your numbers
Summer peak ambient: 84°F · $0.31/kWh
Dark shingles absorb the most heat
Ridge + soffit vents keep panels cooler
Airflow behind panels matters more than people think
Your Heat Penalty
Climate grade: A+39°C
Panel temp at peak
102°F
3.6%
Peak output loss
vs STC rating
102
Annual kWh lost
per 8,000 kWh system
$32
Dollar loss/year
at $0.31/kWh
Heat loss is a minor concern here, and this panel handles it well.
Heat advantage vs baseline panel
Compared to a standard PERC panel at -0.34%/°C temperature coefficient
+31 kWh
more per year
+$10
saved per year
$243
over 25 years
Methodology
peak loss % = (panel temp − 25°C) × |temp coefficient|
STC (Standard Test Conditions) rates panels at 25°C (77°F). Every degree above that costs output at the panel’s temperature coefficient. Baseline -0.34%/°C represents an average PERC panel; HJT panels at -0.24%/°C lose roughly 30% less energy to heat. Annual kWh lost assumes an 8,000 kWh baseline system with 35% of the year spent at elevated summer panel temperatures. Based on NREL System Advisor Model (SAM) methodology for module temperature derating.
Translates marketing percentages into real dollars over ownership
25 years
Default 1,200 kWh/kW is typical for New England residential rooftops
Your guaranteed output over time
0.25%/yr · 92% warranty8,832
Year-25 output
92.0% of new
—
Year-30 (N/A)
Warranty ends year 25
232,936
Lifetime kWh
over 25 years
$0.14
Cost per kWh
installed, warranted
vs baseline panel (0.55%/yr, 80% year-25)
Additional lifetime production
+8,128kWh
Additional lifetime savings
+$4,404
This panel's warranty is worth $4,404 more than a baseline value-tier panel over 25 years.
Output % by year — this panel vs baseline
Calculations use 4% annual utility rate growth compounded year over year. Degradation is applied compounding: each year’s production equals the prior year multiplied by (1 − degradation). Install cost is estimated as price/watt × 2.8× to cover inverter, racking, labor, and permits. The baseline panel assumes 0.55%/year degradation and a 80% year-25 performance warranty — the industry median for value-tier modules. Sources: NREL PV degradation rates study and panel manufacturer datasheets.
NuWatt’s pick
Our premium tier. REC Alpha Pure-RX 470W is the most efficient panel we can reliably deliver with a stable 25-year warranty backing it.
Efficiency
22.6%
Wattage
470W
Temp coefficient
-0.24%/°C
Warranty
25-yr
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Frequently Asked
No. Panasonic Corporation discontinued its original HIT solar cell product line in 2023. The "Panasonic EverVolt" brand sold in the US today is a license arrangement — the Panasonic name is applied to panels that are manufactured by a third party using cells sourced from external manufacturers. The license holder, not Panasonic Corporation, administers the warranty. If this is news to you, you’re not alone — the license structure isn’t heavily marketed.
The EverVolt brand rights for the US residential solar market are held by a Panasonic subsidiary/partner in the US. The supply chain for cells and modules varies by production run and has included multiple Asian manufacturers. For a project-specific answer, we recommend requesting a written cell-origin declaration from any vendor quoting EverVolt panels — this is standard practice for commercial ITC projects that need FEOC compliance verification.
The original Panasonic HIT (Heterojunction with Intrinsic Thin-layer) panels were genuinely made by Panasonic in Japan from the mid-2000s through 2023. They were premium HJT-class panels with very low degradation (~0.25%/year) and low temperature coefficients. The discontinuation was driven by the same structural forces that drove LG Electronics out of solar in 2022: Japanese/Korean manufacturers couldn’t compete with Chinese mass production on price, and the premium segment wasn’t large enough to sustain in-house operations.
Yes — REC Alpha Pure-RX 470W is our premium HJT pick. REC Group manufactures HJT cells in its own facilities in Singapore and Norway. The technology is the same class as the original Panasonic HIT (and as SunPower/Maxeon’s IBC cells): low degradation, low temperature coefficient, excellent warm-weather performance. The warranty is backed by Reliance Industries, which has been publicly traded since 1973 and has actively invested in REC’s HJT capacity since acquiring the company in 2021.
That depends on whether you value brand recognition over verifiable manufacturer identity. The original Panasonic HIT panels were premium-priced because they were a genuinely distinctive product from a large company. EverVolt panels are priced at similar premium levels but the underlying manufacturer is not disclosed on a batch basis and the warranty is not backed by Panasonic Corporation directly. If you want to pay a premium for a panel and know exactly who built it and who backs the warranty, REC Alpha Pure-RX is a cleaner answer.
For standard federal ITC on commercial projects, yes — as long as the specific production run wasn’t sourced from a FEOC-restricted manufacturer (this requires verification per project). For the 10% domestic content adder, EverVolt does not automatically qualify because the cells are not US-manufactured and the specific cell origin is not publicly documented. For ITC-adder-dependent commercial projects, NuWatt recommends Silfab SIL-420 (Washington State) or Q CELLS Q.PEAK DUO (Georgia) — both are verifiably US-manufactured.