Light for its output, weak in heat
The GKA182M120 series of photovoltaic panels is an advanced solution based on M10 cell technology, which significantly increases the energy efficiency of the installation while maintaining optimal module dimensions. Thanks to the use of Half-Cut design and Multi-busbar technology, these panels perform excellently in difficult lighting conditions, effectively minimizing power losses resulting from partial shading or surface contamination. This solution also reduces internal material stress, which directly translates into a reduced risk of micro-cracks and a longer lifespan for the entire system. GKA182M120 is a series designed for investors seeking a balance between high performance and mechanical durability in variable climates. It stands out from the competition with a low temperature coefficient, which allows for the generation of stable energy yields even during record summer heat. It is an ideal choice for both individual prosumers and businesses looking for a fast return on investment while maintaining a high safety standard. The use of advanced anti-reflective coatings further supports maximum absorption of diffused light, making this series one of the most reliable and cost-effective solutions currently available on the photovoltaic market.
Ranking
Signals from the data
Weight-limited structures.
Hot climates, tight roof space and roofs where every square metre has to count.
Top 11% of the TOPCon 450-500 W segment, against a median of 52.2.
Bottom 1% of the TOPCon 450-500 W segment, against a median of -0.290. Ranked 12,425th in the whole database.
Bottom 3% of the TOPCon 450-500 W segment, against a median of 22.52%. Ranked 9,103rd in the whole database.
Bottom 3% of the TOPCon 450-500 W segment, against a median of 225.2. Ranked 9,006th in the whole database.
The combination of half-cut cell architecture, multi-busbar technology, and bifacial PERC cells reduces resistive losses and improves tolerance to partial shading. Under Polish climatic conditions - where diffuse irradiance accounts for approximately 50-60% of total yield - this translates into measurably higher annual energy production compared to standard monofacial modules.
The manufacturer offers a 30-year linear power output warranty, matching peer-comparable Risen (RSM96-11 series) and exceeding the industry baseline of 25 years. The product warranty stands at 12 years, which is the market standard for modules in this class.
The 182 mm cell format is currently the dominant industrial standard (>60% of global module production in 2024-2025), ensuring stable component availability, compatibility with mainstream mounting structures, and continuity of the manufacturer's product roadmap.
The modules carry IEC 61215 and IEC 61730 certifications and are rated for wind loads of 2,400 Pa and snow loads of 5,400 Pa - values appropriate for Poland's climatic zone per PN-EN 1991-1-3 - eliminating the need for more costly reinforced racking systems.
A maximum module efficiency of 21.24% places the top variant of this series on par with the Zonergy ZPM MH3-72 (21.16%) and above the typical average for bifacial PERC modules available on the European market (~20.5-21.0%).
Peer-comparable modules - Risen RSM96-11 (23.0%) and SunKean SKT460M12 (23.02%) - achieve approximately 1.8 percentage points higher efficiency through N-type TOPCon technology. On an equivalent roof area, this translates to roughly 8% lower annual energy yield. TOPCon also offers a lower annual degradation rate (0.4-0.5% vs. 0.6-0.8% for PERC), a difference that compounds materially over the 30-year warranty period.
Bifacial PERC cells carry a bifaciality factor of approximately 70%, whereas N-type TOPCon modules - such as those from Risen or SunKean in the same peer group - reach approximately 85%. On installations with a high-albedo surface beneath the array (light gravel, concrete, white roofing membrane), this difference translates to a 3-5% annual yield disadvantage for the GKA182M120.
Nantong Gamko New Energy, with a manufacturing capacity of approximately 1.2 GW in 2023, does not appear on Bloomberg NEF's Tier-1 module manufacturer lists, which typically require production capacity of 3-5 GW or above. For commercially financed projects, this may complicate debt financing or adversely affect portfolio risk assessment by banks and leasing institutions.
- Module efficiency of 21.2% is 1.3pp below average for TOPCon 450-500W panels (median: 22.5%)
- 212.5 W/m² power density is 12.7 W/m² below TOPCon 450-500W median (225.2 W/m²) - requires larger installation area
- At -0.36%/°C, loses 0.07pp more power per degree than TOPCon 450-500W median (-0.29%/°C)
- Weight of 21.0 kg (3.0 kg below TOPCon 450-500W median of 24.0 kg) allows easier transport and roof mounting
- #9103 for efficiency, #12425 for temperature performance out of 14129 panels
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.
Alternatives
Found 751 panels of the same or similar size to this one, within ±10 mm. See them here Found 760 panels of the same or similar size to this one, within ±25 mm. See them here Found 917 panels of the same or similar size to this one, within ±50 mm. See them here Found 1508 panels of the same or similar size to this one, within ±100 mm. See them here
About the GKA182M120 series
These answers cover the whole series. Where a figure differs, the specification above is this module's own.