--- title: "Corab EC405M-10-108B 405W Solar Panel - Specs & Review | ComparePV" description: "Corab EC405M-10-108B 405W solar panel: 1 shop offer from 561.19 zł. Specs: 20.91% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/corab-ec405m-10-108b" updated: 2026-10-04 --- # Corab EC405M-10-108B Strong in heat, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Corab - **Model:** EC405M-10-108B - **Series:** ENCOR - **Rated power:** 405 W - **Cell technology:** PERC ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [Nowa Elektro](https://comparepv.com/go/2223) | Poland | 561.19 zł incl. VAT | | In stock | Last read 4 Oct 02:12 | ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 405 W | 410 W | Typical | | | 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 (kg) | 20.0 kg | 22.0 kg | Strong - top 12% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | ### 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. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 405 W - **Efficiency:** 20.91 % - **Voltage at Pmax (Vmp):** 30.52 V - **Current at Pmax (Imp):** 13.28 A - **Open-circuit voltage (Voc):** 37.33 V - **Short-circuit current (Isc):** 13.68 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.330 %/degC - **Temperature coefficient of Voc:** -0.246 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1708 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.0 kg - **Area:** 1.94 m2 - **Power density:** 209.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Output after 30 years:** 332 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10064 of 14005 | | Power density | 10093 of 14005 | | Temperature coefficient | 8545 of 14005 | | Weight | 2883 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **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. ## Cons - **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. ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Corab-Encor-EC405M-10-108B-Karta-produktu-pl-1879ad671f8a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-455-MAH54Db](https://comparepv.com/panel/aiko-aiko-455-mah54db) | 455 W | +50 W, cooler, +2.4 pp | | [Longi Solar LR5-54HTH-455M](https://comparepv.com/panel/longi-lr5-54hth-455m) | 455 W | +50 W, cooler, +2.4 pp | | [Yingli YL455CF54 e/2](https://comparepv.com/panel/yingli-yl455cf54-e-2) | 455 W | +50 W, +2.4 pp, +5 yr warranty | | [Einnova Solarline ESM-455T](https://comparepv.com/panel/einnova-solarline-esm-455t) | 455 W | +50 W, +2.4 pp, +5 yr warranty | | [SunEvo Solar SE5-54HBC-455W](https://comparepv.com/panel/sunevo-solar-se5-54hbc-455w) | 455 W | +50 W, cooler, +2.4 pp | | [Just Solar JST-EDMH-(445-465)W-TD (455W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-455w-class) | 455 W | +50 W, +2.4 pp, +5 yr warranty | | [Luxor Solar LX-455M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-455m-182r-96-gg) | 455 W | +50 W, cooler, +2.4 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +105 W, cooler, +4.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +90 W, cooler, +3.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +100 W, cooler, +3.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +85 W, cooler, +3.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +95 W, cooler, +3.6 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +95 W, cooler, +3.6 pp | --- Source: https://comparepv.com/panel/corab-ec405m-10-108b Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.