--- title: "GCL GCL-M10/54H 400 Solar Panel: Specs & Datasheet | ComparePV" description: "GCL GCL-M10/54H 400 solar panel. Specs: 20.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gcl-gcl-m10-54h-400" image: "https://comparepv.com/og/panel/gcl-gcl-m10-54h-400.png" updated: 2026-09-11 --- # GCL GCL-M10/54H 400 Solid all-round for its segment 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** GCL - **Model:** GCL-M10/54H 400 - **Series:** GCL-M10/54H - **Rated power:** 400 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.50% | 20.60% | Typical | 11,389 | | Power density | 204.8 | 206.2 | Typical | 11,450 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight (kg) | 20.5 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.50% | 20.60% | Typical | 11,389 | | Power density | 204.8 | 206.2 | Typical | 11,450 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight per kWp | 51.2 | 53.0 | Typical | 4,665 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.50 % - **Voltage at Pmax (Vmp):** 31.01 V - **Current at Pmax (Imp):** 12.90 A - **Open-circuit voltage (Voc):** 36.78 V - **Short-circuit current (Isc):** 13.52 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.5 kg - **Area:** 1.95 m2 - **Power density:** 204.8 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 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 328 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11389 of 14129 | | Power density | 11450 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 4665 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Tier 1 Manufacturer - #2 Globally per BNEF** - GCL System Integration has appeared on Bloomberg New Energy Finance's Tier 1 list since at least 2017 and has been ranked the world's second-largest module manufacturer by production capacity. Tier 1 status ensures full bankability - projects based on these modules qualify for non-recourse financing, reducing investment risk and simplifying insurance coverage for the installation. - **Up to 21.5% Efficiency - On Par with Segment Leaders** - The top variants in the series achieve 21.5% efficiency, virtually matching the Solarspace SS8-54HSB and Vikram Solar PARADEA (both at 21.51%) and outperforming the Phono Solar TWINPLUS (20.98%). For a 30 m² roof, this translates to approximately 0.15-0.45 kWp more than the segment median of ~21.0%. - **108 Half-Cut M10 Cells - Reduced Partial-Shading Losses** - Splitting the module into two independent electrical sections (split-cell design) reduces current losses under partial shading of one half by up to 50% compared to a conventional full-cell layout. The M10 format (182 mm) delivers high power density (400-420 Wp) within a 1722×1134×30 mm footprint, without the excessive weight typical of larger formats such as G12. - **Temperature Coefficient Pmax: -0.35%/°C** - A value of -0.35%/°C is competitive within the PERC class (segment standard: -0.36 to -0.38%/°C), which at Polish summer temperatures (T\_module ~60°C) limits power loss to approximately 12.3% vs. 13-14% for lower-performing PERC cells. The difference is most pronounced in July and August, when hourly energy yields are at their highest. - **IP68 Junction Box** - An IP68 rating (complete dust-tight protection and sustained submersion resistance) exceeds the standard IP65 found on budget prosumer modules. Combined with a glass-backsheet construction, this provides high moisture resistance under typical rooftop conditions, minimizing the risk of contact corrosion throughout the full warranty period. ## Cons - **PERC (P-type) Instead of N-type - Weaker Power Warranty** - PERC technology is subject to LID (Light-Induced Degradation), with a first-year power loss of ~2% vs. ~1% for N-type TOPCon. The series' linear power warranty guarantees 84.8% output after 25 years, whereas current TOPCon modules (e.g., GCL's own GCL-NT10 line) guarantee 87-90% over the same period. For a 10 kWp system, this equates to approximately 200-500 kWh/year less generation over a 20+ year horizon. - **12-Year Product Warranty - Below the 15-Year Industry Standard** - The series carries a 12-year product warranty, while the Vikram Solar PARADEA and many other Tier 1 modules in this power class standardly offer 15 years. The shorter workmanship warranty period may be a decisive factor in commercial project financing, where lenders typically require a minimum 15-year product warranty. ## About this series The GCL GCL-M10/54H series are rooftop modules based on a **108 monocrystalline cell** layout divided into sections, helping reduce losses in real working conditions when parts of the panel are intermittently shaded or soiled. The application of **PERC technology** supports stable energy production in varying sunlight conditions, while the M10 cell format facilitates high power density without the "oversize" typical of larger modules. In practice, this series addresses a common challenge for investors: how to fit more power on a roof while maintaining predictable yields during transitional seasons and with partial shading. The modules feature a **glass-backsheet** construction with a **connector housing rated IP68**, enhancing moisture and dust resistance for both residential and commercial standard installations. The GCL-M10/54H is ideal for residential roofs, commercial buildings, and small sheds - especially where the balance between power, weight, ease of installation, and equipment reliability matters. ## Notable figures - Efficiency of 20.5% matches the \*\*PERC 400-450W\*\* median - Power density of 204.8 W/m² matches the \*\*PERC 400-450W\*\* median - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - At 20.5 kg, this panel is 1.5 kg lighter than \*\*PERC 400-450W\*\* median (22.0 kg) - easier handling during installation - Ranked #11389 out of 14129 panels for efficiency in the database ## Questions ### What warranty is provided for the GCL-M10/54H series panels? GCL offers a 12-year product warranty covering material and manufacturing defects, as well as a 25-year linear power output warranty for the GCL-M10/54H series. This means the manufacturer guarantees that the module will retain a specified percentage of its nominal power output for a quarter of a century. GCL is a Tier 1 manufacturer, which provides additional assurance that warranty claims will be honored. ### Are the GCL-M10/54H panels suitable for rooftops with partial shading? Yes, the GCL-M10/54H series is a strong choice for installations with partial shading. The half-cut cell configuration - 108 cells divided into independent sections - minimizes losses caused by shadows from chimneys, dormers, or antennas, as shading one section does not shut down the entire module. The PERC technology further improves efficiency under diffuse light conditions, which are typical in Poland during the spring and autumn seasons. ### What is the maximum power output and module efficiency of the GCL-M10/54H? The highest-rated variant in the GCL-M10/54H series delivers a peak power output of 420 Wp at a module efficiency of up to 21.5%. With dimensions of 1722×1134×30 mm, the panel achieves high power density without requiring oversized, difficult-to-handle modules. This makes it a practical choice for residential rooftop installations as well as commercial applications. ### Is the GCL-M10/54H a bifacial panel? No, the GCL-M10/54H series is a monofacial module with a glass-backsheet construction. Power is generated exclusively by the front side of the cells. This results in a lower purchase price and simpler installation compared to bifacial panels, while still delivering strong efficiency thanks to PERC technology. The panel is well suited for standard rooftop installations where there is no high-albedo surface beneath the array to reflect additional light onto the rear side. ### Is the junction box on the GCL-M10/54H weatherproof? Yes, the junction box on the GCL-M10/54H series carries an IP68 ingress protection rating - the highest available class for protection against water and dust ingress. This means the junction box is fully protected even under prolonged submersion in water. This is particularly relevant in the Polish climate, where modules are regularly exposed to precipitation, snow, and condensation. The panel has also passed resistance tests for salt mist, ammonia, and sand. ### Is GCL a reliable photovoltaic panel manufacturer? GCL System Integration (GCLSI) is a Chinese manufacturer classified as Tier 1 by BloombergNEF, meaning it meets stringent financial stability and quality criteria. The company holds TUV, CE, and ISO certifications, among other international accreditations. For investors, Tier 1 status is significant when seeking project financing from banks and provides a realistic assurance that warranty claims will be serviced over the full 25-year warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/6969942376892b3a0bda10-7519a0fab668.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | Cooler, +2.6 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, +2.6 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.5 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.5 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.5 pp | | [GCL GCL-M10/54BH-385W](https://comparepv.com/panel/gcl-gcl-saturn-gcl-m10-54bh-385w) | 385 W | -15 W, hotter, -0.8 pp | | [GCL GCL-M10/54BH-390W](https://comparepv.com/panel/gcl-gcl-saturn-gcl-m10-54bh-390w) | 390 W | -10 W, hotter, -0.5 pp | | [GCL GCL-M10/54BH-395W](https://comparepv.com/panel/gcl-gcl-saturn-gcl-m10-54bh-395w) | 395 W | Hotter, -0.3 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.2 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +105 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +4.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +4.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +100 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/gcl-gcl-m10-54h-400 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.