Light for its output, no clear weak spot
The Gamko New Energy GKA210M108 (530W-550W) series is designed for installations where maximizing power output per square meter and stable performance under varying conditions are crucial. The use of monocrystalline cells in the PERC technology allows for efficient utilization of solar radiation even when weather conditions in Poland are less than ideal - such as during cloudy days or early and late in the day. The 108-cell configuration and refined module architecture make it easy to build chains with predictable parameters, leading to a more efficient choice of inverter and fewer compromises in the design.
Compared to many competing modules, it stands out due to its long linear power warranty, which gives investors greater confidence in the long-term profitability of their investment. This is the ideal choice for installers and investors seeking a solution for commercial rooftops, larger prosumer installations, and PV farms, where repeatability and predictable energy production are essential.
Ranking
Signals from the data
Residential, commercial, utility-scale and shaded-installations.
Top 4% of the PERC 500-550 W segment, against a median of 53.0. Ranked 1,588th in the whole database.
Top 9% of the PERC 500-550 W segment, against a median of 209.0. Ranked 9,204th in the whole database.
Top 10% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 9,235th in the whole database.
The module's peak efficiency of 21.54% outperforms direct competitors in the same power class: Goldi Solar GS10-B144-TF at 21.3%, IBC Solar 182M Half Cell at 21.28%, and S-Energy SL65-72BGJ at 21.3%. The 0.20–0.24 percentage-point advantage translates into higher energy yield per unit of constrained roof area.
The manufacturer provides a 30-year linear power warranty, compared to the 25-year industry standard in the mid-tier segment. The extended warranty horizon directly improves IRR metrics in financial models for commercial installations and utility-scale PV projects.
The bifacial construction enables energy generation from the rear side of the module, with a typical bifacial gain of 5–15% depending on ground albedo and mounting angle. In ground-mounted systems with light-colored gravel ballast or on flat roofs with white TPO/PVC membranes, the bifacial effect delivers a measurable increase in annual energy yield.
The 108 half-cut cell format provides consistent, repeatable Voc and Isc values across strings, simplifying inverter sizing and minimizing MPPT mismatch risk in larger prosumer and commercial installations.
The series carries IEC 61215 (performance) and IEC 61730 (safety) certification, which is required by project finance banks and insurers for systems above 50 kWp. The certification also covers the manufacturer's declared mechanical load ratings of 2,400 Pa for wind and 5,400 Pa for snow.
PERC technology exhibits an annual degradation rate of 0.6–0.8%, whereas newer TOPCon cells degrade at 0.4–0.5%/year (sources: thegrewsolar.com, solarnplus.com). TOPCon captured approximately 66% of global manufacturing capacity in 2024, and Gamko itself has already launched the N-type GKA210N108 series — suggesting that the PERC lineup is being technologically superseded even within the manufacturer's own product portfolio.
Gamko New Energy, with an annual production capacity of approximately 1.2 GW (2023), does not appear on the BNEF Tier 1 list, which requires participation in at least six projects exceeding 10 MW financed by independent commercial banks within a 24-month period. This may limit the series' bankability when securing project finance for PV farms above 1 MWp.
- Efficiency of 21.1% matches the PERC 500-550W median
- At 211.4 W/m² power density, roof space requirements are typical for PERC 500-550W panels
- At -0.34%/°C, hot weather performance is typical for PERC 500-550W panels
- At 25.5 kg, this panel is 2.9 kg lighter than PERC 500-550W median (28.4 kg) - easier handling during installation
- Ranked #9235 out of 14005 panels for efficiency in the database
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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