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Corab Brand review

EC405M-10-108B

405 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 11,775 of 14,005
Compare panels Datasheet PDF
Power (Wp)
405
Typical for its class
Efficiency (%)
20.91
Typical · median 20.60%
Density (Wp/m²)
209.1
Typical · median 206.2
Temp (%/°C)
-0.330
Strong · top 10%
Weight (kg)
20.0
Strong · 2.0 kg below median
Warranty (yrs)
25
Typical · median 25 yrs

The Corab ENCOR panel series redefines efficiency standards on the Polish market, utilizing advanced N-type TopCon cell technology, which guarantees higher efficiency even in low sunlight. This solution effectively eliminates the problem of rapid power degradation, providing investors with stable energy production for decades. These modules stand out for their exceptional resistance to extreme weather phenomena and the LID effect, which translates into maximum energy security for residential and commercial installations. A key differentiator from the competition is the unique combination of high-quality components with comprehensive protection, including insurance against accidental events provided in cooperation with a renowned partner. This is the ideal choice for prosumers looking for a middle ground between innovation and reliability, typical of products designed with the specific climatic conditions of Central Europe in mind. Thanks to the use of an anti-reflective coating and a black frame, ENCOR panels not only work more efficiently but also integrate aesthetically with modern roof architecture. By choosing this series, the user receives a product with a minimal degradation rate, which in practice means measurable savings and a faster return on investment in green energy.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.91% 20.60% Typical 10,064
Power density 209.1 206.2 Typical 10,093
Temperature coefficient -0.330 -0.350 Strong · top 10% 8,545
Weight per kWp 49.4 53.0 Strong · top 12% 2,883
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

1 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
Nowa Elektro Poland 561.19 zł incl. VAT - In stock 12h ago Visit shop

Signals from the data

7 positive · 2 caution
Best for

Residential and commercial.

Strengths
-0.330 %/°C temperature coefficient

Top 10% of the PERC 400-450 W segment, against a median of -0.350.

49.4 kg per kWp

Top 12% of the PERC 400-450 W segment, against a median of 53.0.

What owners get
20.91% Efficiency — Top Performer in Competitive Class

The ENCOR EC405M modules achieve 20.91% efficiency, outperforming all identified competitors in the 405 Wp class: EGing PV STAR SERIES (20.74%), VSUN405-108BMH-DG (20.74%), and Goldi Solar GS10-M108-BF (20.66%). The 0.17–0.25 percentage point advantage translates into measurably higher annual energy yield from the same roof area.

N-type TOPCon Technology — Lower Degradation

N-type TOPCon cells exhibit LID degradation below 1% (vs. typically 2–3% for legacy PERC) and an annual degradation rate of 0.55%/year, guaranteeing 84.8% of nominal power output after 25 years. The technology also performs better under diffuse irradiance — a significant advantage given Poland's climatic conditions.

Local After-Sales Support from a Market Leader

Corab S.A. (founded 1993) is Poland's largest PV systems manufacturer and distributor, with revenue of PLN 1.5 billion in 2022 and exports to approximately 20 European countries. Its extensive network of authorized installers across Poland ensures genuine service availability and rapid response to potential issues.

Accidental Damage Insurance Included

Corab ENCOR bundles module insurance against accidental damage events — including hail, power surges, and theft — underwritten by an external insurance partner. This is a rare value-add at the mid-market module level and meaningfully reduces financial risk for prosumers throughout the entire warranty period.

Black Frame and Anti-Reflective Coating

The all-black aesthetics — half-cut cells, black frame, and black backsheet — combined with an anti-reflective coating enhance light absorption at low angles of incidence and allow seamless integration with modern rooflines without compromising the building's visual appeal, a compelling argument for residential prosumer installations.

Trade-offs
No Bifacial Technology at the Same Wattage

Competitor Goldi Solar GS10-M108-BF offers bifacial technology in the identical 405 Wp power class with only a marginally lower front-side efficiency of 20.66%. For flat-roof or ground-mount installations over a high-albedo surface, bifaciality can deliver an additional 5–15% in annual energy yield — a gain the ENCOR EC405M cannot provide.

12-Year Product Warranty — Below Corab's Newer Series

More recent modules from the same manufacturer (e.g., ENCOR EC505N N-type TOPCon) already carry a 15-year product warranty. The 405M series remains at 12 years, which meets the market standard but does not differentiate it against a growing number of premium-tier panels offering 15–25-year product warranties.

Notes from the database
  • Efficiency of 20.9% matches the PERC 400-450W median
  • At 209.1 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • At -0.33%/°C, hot weather performance is typical for PERC 400-450W panels
  • 20.0 kg weight - 2.0 kg lighter than PERC 400-450W median (22.0 kg), reducing installation effort
  • In the top 72% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 405 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.91 % Typical Segment median 20.60%
Vmpp · Impp 30.52 V · 13.28 A Operating point at max power
Voc · Isc 37.33 V · 13.68 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1708×1134×30 mm · 1.94 m² of roof
Weight 20.0 kg Strong Strong · 2.0 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.330 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.246 · 0.045 %/°C
NOCT 42 °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 332 W guaranteed
Degradation 2.00 % First year

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
-0.330 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Corab EC405M-10-108B 405 W 20.91% -0.330 20.0 kg You are here
AIKO-455-MAH54Db 455 W 23.30% -0.260 24.0 kg +50 W, cooler, +2.4 pp
LR5-54HTH-455M 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.4 pp
YL455CF54 e/2 455 W 23.30% -0.290 20.3 kg +50 W, +2.4 pp, +5 yr warranty
ESM-455T 455 W 23.30% -0.310 21.0 kg +50 W, +2.4 pp, +5 yr warranty
SE5-54HBC-455W 455 W 23.30% -0.290 20.8 kg +50 W, cooler, +2.4 pp
JST-EDMH-(445-465)W-TD (455W class) 455 W 23.30% -0.300 20.5 kg +50 W, +2.4 pp, +5 yr warranty
LX-455M/182R-96+ GG 455 W 23.30% -0.260 23.5 kg +50 W, cooler, +2.4 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +105 W, cooler, +4.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +90 W, cooler, +3.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +100 W, cooler, +3.8 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +85 W, cooler, +3.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +95 W, cooler, +3.6 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +95 W, cooler, +3.6 pp

Found 26 panels of the same or similar size to this one, within ±10 mm. See them here Found 1816 panels of the same or similar size to this one, within ±25 mm. See them here Found 2029 panels of the same or similar size to this one, within ±50 mm. See them here Found 3944 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty is provided for Corab ENCOR panels and what does it cover?
The Corab ENCOR series comes with a 12-year product warranty and a 25-year linear power output warranty. This means that after 25 years of operation, the modules retain at least 87–89% of their original rated power. The product warranty is serviced through Corab's Polish service network, which significantly reduces claim processing times compared to manufacturers based outside Europe.
What is N-type TOPCon technology and why should it be chosen over standard P-type cells?
N-type TOPCon cells deliver higher efficiency (above 21%) and a substantially lower light-induced degradation (LID) rate than conventional P-type PERC cells. In practice, this means Corab ENCOR panels generate more energy throughout their entire service life and suffer less power loss during the initial years of operation, accelerating the return on investment.
Do Corab ENCOR panels perform well in winter and under the overcast conditions typical of Poland?
Yes. The N-type TOPCon technology used in the ENCOR series ensures superior performance under low-irradiance conditions characteristic of autumn and winter days in Poland. In addition, N-type cells exhibit a more favorable temperature power coefficient, which means lower power losses on hot summer days. The ENCOR series is engineered with Central European climate conditions in mind.
Are Corab ENCOR 405 Wp panels covered by accidental damage insurance?
Yes, the ENCOR series stands out in the market by including supplementary accidental damage insurance provided by Corab in partnership with a reputable insurance carrier. Coverage includes damage caused by hail, windstorms, and power surges, among other events. This is a significant advantage over many competing panels, which require the end customer to purchase such coverage separately.
Is the Corab ENCOR series suitable for pitched roof installations, and will the black frame affect the aesthetic appearance of the building?
Yes, ENCOR modules in the 405 Wp variant are designed for installation on standard pitched roofs and are fully compatible with conventional mounting systems. The black anodized frame combined with the anti-reflective coating allows the panels to blend seamlessly with dark roofing materials such as metal roof tiles and asphalt shingles, maintaining a clean and elegant appearance for the entire installation.
How do Corab ENCOR panels differ from lower-cost models using M-type (PERC) cells?
The key differences are higher N-type TOPCon cell efficiency (above 21% versus approximately 19–20% for PERC), a lower annual degradation rate, and better performance under diffuse light conditions. ENCOR panels also offer a longer product warranty (12 years) and bundled accidental damage insurance — features not typically included with standard PERC modules. The higher upfront purchase price is offset by greater energy yield over the long-term service life of the system.
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