--- title: "GCL GCL-M10/72H-565 Solar Panel: Specs & Datasheet | ComparePV" description: "GCL GCL-M10/72H-565 solar panel. Specs: 21.87% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gcl-gcl-m10-72h-565" image: "https://comparepv.com/og/panel/gcl-gcl-m10-72h-565.png" updated: 2026-09-11 --- # GCL GCL-M10/72H-565 Space saver, short guarantee 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** GCL - **Model:** GCL-M10/72H-565 - **Series:** GCL-M10/72H - **Rated power:** 565 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 565 W | 560 W | Typical | | | Module efficiency | 21.87% | 21.29% | Strong - top 3% | 6,971 | | Power density | 218.7 | 212.9 | Strong - top 2% | 6,904 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight (kg) | 27.7 kg | 30.8 kg | Strong - top 12% | | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.87% | 21.29% | Strong - top 3% | 6,971 | | Power density | 218.7 | 212.9 | Strong - top 2% | 6,904 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight per kWp | 49.0 | 52.7 | Strong - top 12% | 2,702 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,912 | ### Strengths - **218.7 watts per square metre** - Top 2% of the PERC 550-600 W segment, against a median of 212.9. Ranked 6,904th in the whole database. - **21.87% module efficiency** - Top 3% of the PERC 550-600 W segment, against a median of 21.29%. Ranked 6,971st in the whole database. - **49.0 kg per kWp** - Top 12% of the PERC 550-600 W segment, against a median of 52.7. ### Watch out for - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Utility-scale, commercial and shaded-installations. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 565 W - **Efficiency:** 21.87 % - **Voltage at Pmax (Vmp):** 43.50 V - **Current at Pmax (Imp):** 12.99 A - **Open-circuit voltage (Voc):** 50.92 V - **Short-circuit current (Isc):** 13.79 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:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 27.7 kg - **Area:** 2.58 m2 - **Power density:** 218.7 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:** 464 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6971 of 14129 | | Power density | 6904 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 2702 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Gallium doping - LID resistance** - Using gallium instead of boron as the dopant effectively eliminates light-induced degradation (LID), which in conventional P-type PERC cells can consume 1-2% of rated power during the first months of operation. This represents a tangible advantage over legacy PERC modules that lack this improvement. - **Half-cut 144-cell design + MBB** - The half-cut cell architecture (144 cells) combined with a multi-busbar (MBB) interconnection scheme reduces resistive losses and improves performance under partial shading conditions - a meaningful benefit for commercial and industrial installations where uniform irradiance cannot always be guaranteed. - **GCL-SI: Tier-1 BNEF, in the market since 1990** - GCL System Integration appears on the Bloomberg NEF Tier-1 module manufacturer list, meaning it has secured financing for at least six projects exceeding 10 MW through independent commercial banks within the preceding 24 months. This status is critical when pursuing project finance for utility-scale PV plants. - **Efficiency up to 21.87% - Tier-1 class** - Peak module efficiency reaches 21.87%, placing the series directly alongside comparable Tier-1 products such as the JA Solar DeepBlue 3.0 Pro and the LONGi Hi-MO 5m G2, both rated at 21.9%. A difference of less than 0.05 percentage points is negligible in practice for utility-scale projects. - **Power range 545-565 Wp - BoS optimization** - The high per-module power rating reduces the number of panels required per installed MW, directly lowering Balance of System (BoS) costs - cabling, racking structures, and installation labor - a key input when calculating LCOE for large-scale projects. ## Cons - **Series discontinued (since approx. 2021-2022)** - The GCL-M10/72H series has discontinued status; availability of new modules is limited to distributor warehouse stock. In the event of warranty replacements or system expansion years down the line, sourcing identical modules for string matching will be difficult or impossible. - **P-type PERC technology - displaced by TOPCon** - By 2025, TOPCon surpassed PERC as the dominant market technology, accounting for approximately 49-66% of global manufacturing capacity, and offering module efficiencies of 22-24% with a lower degradation rate. Selecting a PERC module over an N-type TOPCon product for new solar farm projects now requires explicit cost justification. - **Monofacial design - limitation for ground-mounted arrays** - The series is monofacial (is\_bifacial: false), while the utility-scale segment increasingly specifies bifacial modules to maximize albedo-reflected energy gain (typical bifacial gain: 5-15% depending on ground surface). The bifacial TOPCon market for ground-mounted arrays was valued at USD 23.45 billion in 2024 and continues to grow rapidly. ## About this series Photovoltaic panels from the GCL-M10/72H series utilize large-format M10 cells, which represent the market standard in the field of high-efficiency industrial installations. A key innovation is the use of **gallium doping**, which effectively protects the modules against LID degradation and guarantees long-term stability of electrical parameters. The design based on **half-cut cell** technology and a multi-busbar (MBB) system allows for a significant reduction in resistive losses and better performance under partial shading conditions. This series addresses the cost-efficiency of large projects by offering an optimized power-to-area ratio, which effectively reduces expenditure on mounting structures and cabling. Designed primarily for **utility-scale solar farms** and commercial investments, it stands out from the competition with excellent resistance to potential-induced degradation (PID) and high mechanical strength. By choosing these modules, investors ensure high yields even in difficult weather conditions, as confirmed by their low **temperature coefficient of power**. This is a professional solution for experts focused on maximizing the LCOE ratio and long-term energy security of the system. ## Notable figures - 21.9% module efficiency - 0.6pp better than the \*\*PERC 550-600W\*\* median of 21.3% - 218.7 W/m² power density - 5.8 W/m² more than \*\*PERC 550-600W\*\* median (212.9 W/m²), more power per roof area - Temperature coefficient of -0.35%/°C matches the \*\*PERC 550-600W\*\* median - Weight of 27.7 kg (3.1 kg below \*\*PERC 550-600W\*\* median of 30.8 kg) allows easier transport and roof mounting - Ranked #6971 out of 14129 panels for efficiency in the database ## Questions ### Is the GCL-M10/72H series still available for purchase? The GCL-M10/72H series has been discontinued and is no longer available as new stock through regular distribution channels. Limited inventory may still exist with select distributors; however, new projects should not be planned with the assumption of continued supply from this series. For large-scale commercial and utility installations, GCL offers newer series based on N-type cell technology, delivering higher efficiencies and updated warranty terms. ### What warranty does GCL offer on the GCL-M10/72H series panels? The manufacturer provides a 12-year product warranty covering defects in materials and workmanship, along with a 25-year linear power output warranty. In practice, this means the module is guaranteed to retain at least the minimum percentage of its nominal power output as declared in the warranty documentation throughout the 25-year period. As a Tier 1 manufacturer, GCL maintains the financial standing required to honor these obligations for the full duration of the warranty. ### What types of installations are the GCL-M10/72H panels - rated up to 565 Wp - best suited for? The GCL-M10/72H series, with a peak power output of up to 565 Wp and large-format M10 cells, is designed primarily for utility-scale solar farms and commercial ground-mounted installations. The modules' large physical dimensions (approximately 2,278 × 1,134 mm) and high per-unit power rating reduce balance-of-system (BoS) costs - including racking structures and cabling - on a per-megawatt basis, resulting in a more favorable LCOE for projects exceeding 1 MW. These panels are not recommended for typical residential rooftop applications. ### What is gallium doping in the GCL-M10/72H panels and why does it matter? Gallium doping is a PERC cell manufacturing method in which the silicon base material is doped with gallium instead of the standard boron. This approach effectively eliminates Light-Induced Degradation (LID) - the power loss that occurs during the first hours of light exposure, which in conventional boron-doped cells can reach 1-3%. As a result, GCL-M10/72H panels deliver their rated electrical parameters from day one of operation and maintain stable power output throughout the entire service life. ### Do the half-cut cell and MBB technologies in the GCL-M10/72H series actually improve energy yield under partial shading? Yes, and the improvement is measurable. Half-cut cells split each cell into two independent sections, which limits the impact of shading on one portion of the module on its overall power output. The multi-busbar (MBB) design shortens current flow paths, reducing resistive losses. As a result, the GCL-M10/72H series outperforms standard full-cell modules under partial shading conditions - for example, from nearby structures or the variable cloud cover typical of the Polish climate. ### Are the GCL-M10/72H panels resistant to PID degradation and harsh weather conditions? Yes, the GCL-M10/72H series has passed Potential Induced Degradation (PID) resistance testing, which is particularly important for utility-scale installations operating at high system voltages. The modules also hold certified test results for resistance to salt mist, ammonia, and sand, confirming their suitability for environmentally demanding locations. Low-emission glass with a self-cleaning coating and a moisture-resistant aluminum frame ensure long-term durability under Polish climatic conditions throughout the full 25-year warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/207726166890b77911bb8-ad4e6123eb28.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +2.9 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +2.7 pp, +5 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +2.5 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, +2.5 pp, +5 yr warranty | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, +2.5 pp, +5 yr warranty | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | Cooler, +2.4 pp, +5 yr warranty | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | Cooler, +2.3 pp, +5 yr warranty | | [GCL GCL-M10/72GDF-540](https://comparepv.com/panel/gcl-gcl-m10-72gdf-540) | 540 W | Heavier, -1.0 pp, +5 yr warranty | | [GCL GCL-M10/72GDF-545](https://comparepv.com/panel/gcl-gcl-m10-72gdf-545) | 545 W | Heavier, -0.8 pp, +5 yr warranty | | [GCL GCL-M10/72GDF-550](https://comparepv.com/panel/gcl-gcl-m10-72gdf-550) | 550 W | Heavier, -0.6 pp, +5 yr warranty | | [GCL GCL-M10/72GDF-555](https://comparepv.com/panel/gcl-gcl-m10-72gdf-555) | 555 W | Heavier, -0.4 pp, +5 yr warranty | | [GCL GCL-M10/72H-560](https://comparepv.com/panel/gcl-gcl-m10-72h-560) | 560 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +80 W, cooler, +3.1 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +75 W, cooler, +2.9 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +70 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/gcl-gcl-m10-72h-565 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.