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RedSolar CETC-400M(L)/108
RedSolar Brand review

CETC-400M(L)/108

400 Wp PERC
ComparePV verdict

Light for its output, no clear weak spot

Rank 11,695 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
20.50
Typical · median 20.60%
Density (Wp/m²)
205.0
Typical · median 206.2
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
11.4
Strong · 10.6 kg below median
Warranty (yrs)
25
Typical · median 25 yrs

The RedSolar P series M10-PERC Ultralight line addresses one of the most common challenges installers face - limited roof load capacity, where conventional glass-glass modules simply aren't a practical fit. The panels are built around monocrystalline PERC M10 cells arranged in a 108-cell configuration, delivering strong conversion efficiency while keeping overall module mass down. The defining advantage of this line is its ultra-light construction, which makes it possible to install these modules on low load-bearing roofs, metal industrial sheds, or carport structures, where panel weight directly affects the cost of structural reinforcement. The panels feature tempered front glass with an anti-reflective coating, improving light transmission and boosting energy yield under less favorable irradiance conditions. The manufacturer backs the series with a 25-year linear power warranty, limiting annual degradation to 0.55%, along with a 12-year product warranty, translating into predictable returns over the full lifetime of the installation. Enhanced resistance to snow and wind loads makes this series a solid choice for both residential rooftop installations and commercial projects where low weight and high reliability are top priorities.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.50% 20.60% Typical 11,308
Power density 205.0 206.2 Typical 11,353
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 28.6 53.0 Strong · top 3% 129
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 3 caution
Best for

Weight-limited structures.

Strengths
28.6 kg per kWp

Top 3% of the PERC 400-450 W segment, against a median of 53.0. Ranked 129th in the whole database.

What owners get
Ultralight design for weak-load roofs

This series is purpose-built for structures with limited load capacity - metal-clad industrial halls, carports, and older pitched roofs - where standard glass-glass modules would require costly structural reinforcement. This is a genuine niche advantage not matched by standard peer series (GCL M10/54H, Jinko JS-PERC), which target conventional mounting systems.

Competitive efficiency up to 21.52%

Efficiency of 21.52% is essentially on par with GCL-M10/54H (21.5%) and HT54-18X(PD)-F (21.5%), and only 0.18 percentage points behind Jinko JS-PERC (21.7%) - a negligible difference for a typical residential/prosumer installation.

25-year linear power warranty with 0.55%/year degradation

The 0.55% annual degradation rate is in line with industry standards for PERC cells, and combined with a 25-year warranty term provides predictable energy yield across the system's lifecycle, simplifying LCOE calculations.

Anti-reflective coated tempered glass

Higher light transmission from the AR coating improves yield under diffuse irradiance conditions (overcast days, low sun angles), which is particularly relevant in Poland's climate with lower average angles of incidence.

CETC technology backing

The manufacturer (Hunan RedSolar), founded in 2008, was incubated by CETC's 48th Research Institute, providing access to decades of semiconductor and PV know-how rather than being a generic no-name OEM brand.

Trade-offs
No BNEF Tier 1 status

Unlike some competitors (e.g., Jinko Solar), RedSolar does not appear on publicly available BNEF Tier 1 lists - this may be a limiting factor for institutional investors and bank-financed projects requiring Tier 1 sourcing.

12-year product warranty below current market trend

Many Tier-1 manufacturers are now shifting to a 15-year product warranty as the 2026 market standard - the 12 years offered here sits at the lower end of the premium segment.

No bifacial variant available

This series is monofacial only, meaning installations on light-colored roofs or elevated ground-mount structures with high albedo cannot capture the additional yield (typically 5-10%) available from bifacial modules offered by some competitors.

Notes from the database
  • Efficiency of 20.5% matches the PERC 400-450W median
  • Power density of 205.0 W/m² matches the PERC 400-450W median
  • Temperature coefficient of -0.35%/°C matches the PERC 400-450W median
  • 11.4 kg weight - 10.6 kg lighter than PERC 400-450W median (22.0 kg), reducing installation effort
  • In the top 81% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.50 % Typical Segment median 20.60%
Vmpp · Impp 30.50 V · 13.11 A Operating point at max power
Voc · Isc 36.84 V · 13.77 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1133×30 mm · 1.95 m² of roof
Weight 11.4 kg Strong Strong · 10.6 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.280 · 0.048 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 328 W guaranteed
Degradation 2.00 → 0.55 % First year, then annual

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
-0.350 %/°C against a segment median of -0.350
-

Alternatives

All RedSolar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
RedSolar CETC-400M(L)/108 400 W 20.50% -0.350 11.4 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, heavier, +2.6 pp
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, heavier, +2.6 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg Cooler, heavier, +2.5 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, heavier, +2.5 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, heavier, +2.5 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg Cooler, heavier, +2.5 pp
CETC-405M(L)/108 405 W 20.76% -0.350 11.4 kg +0.3 pp
CETC-410M(L)/108 410 W 21.01% -0.350 11.4 kg +10 W, +0.5 pp
CETC-415M(L)/108 415 W 21.27% -0.350 11.4 kg +15 W, +0.8 pp
CETC-420M(L)/108 420 W 21.52% -0.350 11.4 kg +20 W, +1.0 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, heavier, +4.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, heavier, +4.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, heavier, +4.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, heavier, +4.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, heavier, +4.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +100 W, heavier, +4.0 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Are RedSolar P M10-PERC Ultralight panels suitable for low load-bearing roofs, like a metal-sheet hall?
Yes, this is the primary purpose of this series. The ultralight construction was designed specifically for roofs with limited load-bearing capacity, industrial halls with metal sheeting, and carport structures, where panel weight directly affects the cost of structural reinforcement. Thanks to the reduced weight, installation typically does not require additional roof reinforcement.
What warranty comes with RedSolar P M10-PERC Ultralight modules?
The manufacturer provides a 12-year product warranty and a 25-year linear power warranty, with annual degradation limited to 0.55%. This means that after 25 years of operation the panel should retain a significant share of its original efficiency, resulting in a predictable, long-term return on investment.
What is the maximum power output of the RedSolar P M10-PERC Ultralight panel and how many cells does it use?
The module reaches a maximum power output of 420 Wp thanks to 108 monocrystalline PERC M10 cells. This configuration delivers high conversion efficiency while keeping the overall module mass reduced, which is essential for installations on roofs with low load-bearing capacity.
Are the panels in this series bifacial?
No, the P M10-PERC Ultralight series consists of monofacial modules built on classic PERC technology. Instead of dual-side generation, the manufacturer focused on reducing structural weight, making this model a more versatile choice where light weight matters more than maximizing rear-side irradiance gains.
Does the anti-reflective glass coating actually improve energy yield?
Yes. The tempered front glass with anti-reflective coating reduces sunlight reflection and increases light transmission to the cells, improving performance especially at low sun angles, such as early morning, evening, or winter conditions. In practice this translates to higher energy yield under more challenging irradiance conditions compared to standard glass.
Can RedSolar Ultralight modules withstand heavy snow and wind loads despite their lower weight?
Yes, despite the reduced-mass construction, this series features reinforced resistance to snow and wind loads, as confirmed by the module's mechanical specifications. The manufacturer designed the panel so that weight reduction does not compromise durability, making it suitable for both residential rooftop installations and commercial projects exposed to demanding weather conditions.
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