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Panasonic Brand review

EVPV350K

350 Wp HJT
ComparePV verdict

Middle of its segment, modest efficiency

Rank 11,922 of 14,005
Compare panels Datasheet PDF
Power (Wp)
350
Weak · bottom 2%
Efficiency (%)
20.00
Weak · bottom 8%
Density (Wp/m²)
200.2
Weak · bottom 8%
Temp (%/°C)
-0.260
Weak · bottom 9%
Weight (kg)
19.5
Typical · median 22.8 kg
Warranty (yrs)
25
Weak · bottom 19%

The Panasonic EVERVOLT Solar Module Black Series 360K/350K is designed to maximize energy generation from a limited roof area - making it ideal for situations where every square meter and the aesthetics of the installation are important. The modules are distinguished by their full black design, which ensures a consistent look on modern roofs, without any distracting frame or cell contrasts.

A key advantage is the HJT half-cut heterojunction technology, which improves light conversion and operational stability in real-world conditions. In practice, this means improved performance at high temperatures and more predictable output when the sun heats the modules more intensely. Furthermore, the design supports continuous operation even with partial shading, which is important for chimneys, skylights, or nearby trees.

This is the ideal choice for homeowners and small businesses who want high-quality premium modules and reliable operation - thanks also to the long, comprehensive warranty that covers not only the product but also its operating parameters.

Ranking

45 panels in the segment HJT 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.00% 20.90% Weak · bottom 8% 12,214
Power density 200.2 209.3 Weak · bottom 8% 12,195
Temperature coefficient -0.260 -0.259 Weak · bottom 9% 511
Weight per kWp 55.7 59.2 Typical 10,113
Performance warranty 25 yrs 30 yrs Weak · bottom 19% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Not ideal for

Tight roof space, roofs where every square metre has to count and hot climates.

Watch-outs
20.00% module efficiency

Bottom 8% of the HJT 350-400 W segment, against a median of 20.90%. Ranked 12,214th in the whole database.

200.2 watts per square metre

Bottom 8% of the HJT 350-400 W segment, against a median of 209.3. Ranked 12,195th in the whole database.

-0.260 %/°C temperature coefficient

Bottom 9% of the HJT 350-400 W segment, against a median of -0.259. Ranked 511th in the whole database.

What owners get
High module efficiency up to 20.6%

Module efficiency of 20-20.6% via HJT technology clearly outperforms comparable 360 Wp panels in the segment, such as Corab Encor EC360M-6-120FB (19.27%), Lina Energy LE MEPV 108 (18.44%), and Hansol TD-AN3 (18.05%) - a lead of 1.3-2.5 percentage points.

Very low temperature coefficient

Heterojunction (HJT) cells deliver a power temperature coefficient of 0.26%/°C, which the manufacturer describes as industry-leading. This results in less power loss during summer heat compared to typical PERC panels (usually 0.35-0.40%/°C).

Comprehensive 25-year AllGuard warranty

The warranty simultaneously covers product, power performance, and labor (AllGuard/TripleGuard program) for 25 years, with a guaranteed minimum power output of 92% after that period - a broader scope of coverage than the standard linear warranty offered by many tier-1 manufacturers.

Partial shading resilience

The half-cut cell layout combined with HJT technology limits the impact of partial shading (chimneys, dormers, trees) on the whole string's output, improving production stability under real rooftop conditions.

Full Black aesthetic design

The all-black frame, backsheet, and cell styling gives a uniform look on modern roofs, an important selection criterion for residential customers who prioritize installation aesthetics.

Trade-offs
Production discontinued, no successor series

Panasonic officially exited the solar and energy storage market in April 2025, ending the EverVolt line. Existing AllGuard warranties are still being honored, but the series is no longer available for purchase, and long-term service and spare-parts availability now depends on the post-exit support structure.

Manufacturing outsourced to REC Group since 2022

Panasonic stopped manufacturing its own cells and modules back in 2022, outsourcing production to REC Group, while its share of US solar installations fell from 35% in 2020 to just 6% by 2024. The premium brand was no longer fully backed by in-house manufacturing capacity during the series' final years on the market.

Notes from the database
  • Module efficiency of 20.0% is 0.6pp below average for HJT 0-400W panels (median: 20.6%)
  • At 200.2 W/m², this panel generates 6.2 W/m² less per unit area than HJT 0-400W median (206.4 W/m²)
  • At -0.26%/°C, hot weather performance is typical for HJT 0-400W panels
  • 19.5 kg weight - 2.0 kg lighter than HJT 0-400W median (21.5 kg), reducing installation effort
  • In the top 87% for efficiency among all HJT panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 350 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.00 % Weak Segment median 20.90%
Vmpp · Impp 36.00 V · 9.73 A Operating point at max power
Voc · Isc 43.20 V · 10.44 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1721×1016×30 mm · 1.75 m² of roof
Weight 19.5 kg Typical Typical · median 22.8 kg
Cells 120 · HJT Monocrystalline
Coefficient Pmax -0.260 %/°C Weak bottom 9% of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Weak bottom 19% · median 30 yrs
End-of-warranty output 92.0 % Equals 318 W guaranteed
Degradation 2.00 → 0.25 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Panasonic in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 350 Wp appear here. The rest cover the whole series.

Performance Warranty Performance Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.260 %/°C against a segment median of -0.259
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Panasonic EVPV350K 350 W 20.00% -0.260 19.5 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg -50 W, lighter, +3.3 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg -50 W, lighter, +3.3 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Hotter, lighter, +3.1 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Hotter, lighter, +3.1 pp
GKA182M300W 300 W 23.00% - 16.2 kg -50 W, +3.0 pp, +5 yr warranty
GKA210M320W 320 W 23.00% - 16.2 kg Lighter, +3.0 pp, +5 yr warranty
GKA210M340W 340 W 23.00% - 16.2 kg Lighter, +3.0 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +3.0 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg +30 W, +3.0 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +50 W, +3.0 pp, +5 yr warranty
EVPV360 360 W 20.60% -0.260 19.5 kg +10 W, +0.6 pp
EVPV370 370 W 21.20% -0.260 19.5 kg +20 W, +1.2 pp
EVPV380 380 W 21.70% -0.260 19.5 kg +30 W, +1.7 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +90 W, +2.9 pp, +5 yr warranty
MS440N-DHBA 440 W 22.73% -0.290 22.0 kg +90 W, +2.7 pp, +5 yr warranty
JT435SYk(B) 435 W 22.70% -0.240 23.0 kg +85 W, +2.7 pp, +5 yr warranty

Found 6 panels of the same or similar size to this one, within ±10 mm. See them here Found 65 panels of the same or similar size to this one, within ±25 mm. See them here Found 443 panels of the same or similar size to this one, within ±50 mm. See them here Found 865 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Panasonic EVERVOLT Black Series 360K/350K still available for purchase?
The EVERVOLT Black Series 360K/350K has been discontinued by Panasonic and is no longer in active production. Availability depends entirely on remaining distributor stock. If you need a similar all-black aesthetic with HJT technology, Panasonic's newer EVERVOLT PK Black Series 370/360W is the direct successor and is worth considering.
What warranty does the Panasonic EVERVOLT Black Series 360K/350K come with?
Panasonic provides a 25-year product warranty and a 25-year power output warranty. After 25 years of operation, at least 92% of the rated power output is guaranteed. This is among the most comprehensive warranties in the premium module segment and supports predictable energy yield calculations over the full system lifetime.
How does HJT half-cut cell technology in the EVERVOLT Black 360K work in real-world conditions?
HJT (heterojunction) technology stacks thin amorphous silicon layers onto crystalline cells, achieving a temperature coefficient of approximately -0.26%/°C. In practice, this means output losses on hot summer days are significantly lower than with standard PERC modules. The half-cut cell layout reduces resistive losses and improves performance under partial shading from chimneys, dormers, or nearby trees.
What are the dimensions and weight of the EVERVOLT 360K panel, and is it manageable for a rooftop install?
The EVERVOLT 360K measures 1721×1016×30 mm and weighs 19.5 kg. For a premium 360 W module, these are compact and manageable specs. A two-person rooftop installation on a pitched roof is physically feasible, but for warranty compliance and electrical safety, the work should always be performed by a certified PV installer.
Does the all-black design of the Black 360K/350K series affect module efficiency?
A black backsheet and black frame do marginally raise operating temperature compared to standard white-backsheet modules. In the EVERVOLT Black series, this effect is largely offset by the excellent HJT temperature coefficient of -0.26%/°C. The aesthetic benefit of a uniform rooftop appearance therefore comes at a minimal efficiency cost, making it a rational choice for design-conscious homeowners.
Are the Panasonic EVERVOLT Black 360K/350K modules a good fit for a small roof with limited space?
Yes, maximizing output from a limited roof area is a core use case for this series. The 360K module achieves approximately 20.6% efficiency, placing it at the top of its format class. Compared to standard PERC modules at 19–20% efficiency, this can translate to one or more additional watts per square meter across the array, which matters significantly on constrained roof sections.
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