--- title: "Gamko New Energy GKA182M300W 300W Solar Panel - Specs & Review | ComparePV" description: "Gamko New Energy GKA182M300W 300W solar panel. Specs: 23.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/gamko-new-energy-gka182m300w" updated: 2026-09-11 --- # Gamko New Energy GKA182M300W Efficiency leader, needs the roof space 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Gamko New Energy - **Model:** GKA182M300W - **Series:** GKA182/210M - **Rated power:** 300 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 300 W | 325 W | Weak - bottom 3% | | | Module efficiency | 23.00% | 19.00% | Strong - top 1% | 1,919 | | Power density | 173.1 | 190.0 | Weak - bottom 23% | 13,373 | | Temperature coefficient | - | -0.360 | | | | Weight (kg) | 16.2 kg | 19.0 kg | Strong - top 3% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.00% | 19.00% | Strong - top 1% | 1,919 | | Power density | 173.1 | 190.0 | Weak - bottom 23% | 13,373 | | Temperature coefficient | - | -0.360 | | | | Weight per kWp | 54.0 | 60.0 | Strong - top 3% | 8,183 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Strengths - **23.00% module efficiency** - Top 1% of the PERC 300-350 W segment, against a median of 19.00%. Ranked 1,919th in the whole database. - **54.0 kg per kWp** - Top 3% of the PERC 300-350 W segment, against a median of 60.0. Ranked 8,183rd in the whole database. - **30 year performance warranty** - Top 15% of the PERC 300-350 W segment, against a median of 25 yrs. ### Watch out for - **173.1 watts per square metre** - Bottom 23% of the PERC 300-350 W segment, against a median of 190.0. - **Best for:** Residential and commercial. - **Not ideal for:** Roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 300 W - **Efficiency:** 23.00 % - **Voltage at Pmax (Vmp):** 43.15 V - **Current at Pmax (Imp):** 6.95 A - **Open-circuit voltage (Voc):** 49.62 V - **Short-circuit current (Isc):** 7.30 A - **Max system voltage:** 1000 V ### Temperature - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Bifacial:** yes ### Physical - **Length:** 1970 mm - **Width:** 880 mm - **Thickness:** 30 mm - **Weight:** 16.2 kg - **Area:** 1.73 m2 - **Power density:** 173.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1919 of 14005 | | Power density | 13373 of 14005 | | Temperature coefficient | 13924 of 14005 | | Weight | 8183 of 14005 | | Warranty | 21 of 14005 | ## Pros - **23% Efficiency – a Clear Advantage Over Comparable Series** - The GKA182/210M series modules achieve 23% efficiency, while directly comparable series in a similar power range (up to 360 Wp) post significantly lower values: Corab Encor 19.27%, Lina Energy LE MEPV 18.44%, Bisol Spectrum 18.0%. A gap of more than 3.5–5 percentage points translates into a noticeably smaller footprint required to achieve the same installed peak power. - **30-Year Warranty – Above the Industry Standard** - The manufacturer provides a 30-year warranty covering both the product and linear power output, whereas the industry standard for this price segment is 25 years. The extended coverage reduces financial risk for prosumer installations, which typically reach payback within 8–15 years. - **Bifacial Design in PERC Technology** - The bifacial variant harvests energy from irradiance reflected off the ground or rooftop surface, delivering 5–15% additional yield in practice on high-albedo substrates (white gravel, light-colored metal roofing, concrete). The combination of bifacial and PERC in this power class (up to 360 Wp) is uncommon among the competing series evaluated. - **Multi-Busbar – Lower Losses and Improved Resistance to Microcracks** - The multi-busbar design shortens current path length within the cell, reducing internal resistance and shading losses. It simultaneously increases tolerance to microcracks induced during transport and installation, which is particularly relevant under Polish winter conditions involving cyclic snow loading. - **Full-Black Variant for Premium Installations** - The availability of a full-black version (black frame + black backsheet) extends the application scope to the premium market: single-family homes with aesthetic requirements, contemporary architecture, and street-facing installations. Bisol Spectrum and Corab Encor do not offer a full all-black variant in this power class based on available datasheets. ## Cons - **PERC Instead of TOPCon – Higher LID Rate** - By 2026, N-type TOPCon technology has become the standard for modules rated ≥23% efficiency. P-type PERC cells exhibit a Light-Induced Degradation (LID) effect of approximately 1.5–2% in the first year of operation, compared to typically \<0.5% for TOPCon. Over a 30-year warranty period, this difference results in meaningfully lower cumulative energy yield than STC efficiency figures alone would suggest. - **Power Range of 300–360 Wp Below the 2026 Market Standard** - Current residential and commercial products from Tier-1 manufacturers (Jinko, LONGi, Trina) standardly cover 415–580 Wp per module. The maximum 360 Wp variant requires installing a larger number of modules to achieve the same system peak power, which can increase labor and wiring costs for projects ≥10 kWp. - **No Confirmed BNEF Tier 1 Status** - Gamko New Energy (capacity ~1.2 GW/year in 2023) does not appear on available BNEF Tier 1 lists for Q1 2026, unlike dominant manufacturers such as Jinko, LONGi, Trina, and JA Solar. For installations financed through bank loans or leasing, this may create difficulties in module acceptance by financing institutions that require a bankable manufacturer. ## About this series The Gamko New Energy GKA182/210M series has been designed for maximum energy yield in situations where every square meter and long-term stability are crucial. The use of monocrystalline cells in the **PERC** technology helps to better utilize radiation under typical Polish conditions, even in cloudy weather and during early mornings. The **bifacial** version allows for "collecting" light from both sides - which effectively supports production on bright roofs, ground-mounted structures, and carport structures. Another advantage of this series is the availability of **full black** versions, which are often chosen for modern homes where a consistent aesthetic is desired. The modules use a **multi-busbar** design, which helps to reduce losses and improve resistance to microcracks during transport and installation. This is a good choice for home and small business installations when you are looking for high efficiency, flexibility in choosing a version, and long-term warranty protection. ## Notable figures - Efficiency of 23.0% is 3.6pp above the \*\*PERC 0-400W\*\* median (19.4%) - 173.1 W/m² power density is 21.3 W/m² below \*\*PERC 0-400W\*\* median (194.4 W/m²) - requires larger installation area - Weight of 16.2 kg (4.3 kg below \*\*PERC 0-400W\*\* median of 20.5 kg) allows easier transport and roof mounting - In the top 14% for efficiency among all PERC panels ## Questions ### What warranty does the Gamko New Energy GKA182/210M series carry and what does it cover? The GKA182/210M series comes with a 30-year product warranty and a 30-year power output warranty. This means that over three decades the manufacturer is responsible for both physical defects in the module and for maintaining a specified energy yield level. It is one of the longest warranty packages available on the market, providing genuine protection of the investment throughout the full lifecycle of the installation. ### What does bifacial technology offer in the GKA182/210M panels and is the premium worth paying? The bifacial variant of the GKA182/210M series captures irradiance not only from the front face but also from the rear face of the module, utilizing light reflected from surfaces such as light-colored roofing, gravel, or grass. In practice, this can increase annual energy production by several to over ten percent without requiring additional roof area. The gain is most pronounced in ground-mounted systems, carports, and installations on light-colored roof surfaces. On a typical dark-colored pitched roof the benefit is more modest. ### Do the GKA182/210M panels in the full black variant suffer any efficiency loss compared to the standard version? The full black variant differs primarily in aesthetics: a black frame, black backsheet, and dark cells create a uniform appearance that is highly valued in modern architecture. The efficiency difference relative to the standard module is marginal and should not be a decisive selection criterion. More relevant considerations are compatibility with the roof's visual design and the architect's preferences. Peak power in this series reaches 360 Wp regardless of the color variant. ### Do the PERC cells in the GKA182/210M series perform well under Polish weather conditions, particularly in overcast skies? The PERC technology used in the GKA182/210M series responds more effectively to diffuse irradiance than older conventional cells, which is especially important in Poland, where cloud cover and a low solar angle are common for a significant portion of the year. The reflective layer within the PERC cell allows more efficient utilization of photons that would otherwise be absorbed without generating current. This translates into higher energy yield during morning and evening hours as well as on overcast days. ### Are the Gamko New Energy GKA182/210M panels suitable for ground-mounted installations or carports? Yes, the GKA182/210M series is well suited for ground-mounted structures and carports, particularly in the bifacial version. In such installations the rear face of the module can capture irradiance reflected from the ground surface, increasing energy production. Certified resistance to wind loads (2400 Pa) and snow loads (5400 Pa) confirms that the modules are capable of withstanding conditions typical of Central Europe. The multi-busbar design additionally reduces the risk of damage during transportation and field installation. ### How many GKA182/210M panels rated at 360 Wp do I need for a typical residential 6 kWp system? With a peak power of 360 Wp per module, a target system size of 6 kWp requires approximately 17 GKA182/210M panels (17 × 360 Wp = 6,120 Wp). In practice, the exact number of modules depends on the household's annual energy consumption, the available roof area, and the orientation of the roof surface. For a typical single-family home consuming 4,000–6,000 kWh per year, a system of this size will fully cover energy needs. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/GKA182M210M-300-360W-8a9ffb6e2008.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Lighter, +0.3 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Lighter, +0.3 pp, -5 yr warranty | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | -20 W, lighter, +0.3 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | +30 W, lighter, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | +30 W, lighter, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -15 W, lighter | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | -40 W, lighter | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | -30 W, lighter | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | +20 W | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | +40 W | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | +60 W | --- Source: https://comparepv.com/panel/gamko-new-energy-gka182m300w Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.