--- title: "Sunket New Energy SKT355M10 355W Solar Panel - Specs & Review | ComparePV" description: "Sunket New Energy SKT355M10 355W solar panel. Specs: 18.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/sunket-new-energy-skt355m10" updated: 2026-09-11 --- # Sunket New Energy SKT355M10 Middle of its segment, short guarantee 112 panels in the segment TOPCon 350-400 W ## Identity - **Manufacturer:** Sunket New Energy - **Model:** SKT355M10 - **Series:** SKT345~365M10 - **Rated power:** 355 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 350-400 W (112 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 355 W | 380 W | Weak - bottom 13% | | | Module efficiency | 18.20% | 18.20% | Typical | 13,178 | | Power density | 181.8 | 181.8 | Typical | 13,162 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 20.5 kg | 26.0 kg | Typical | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 20% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 18.20% | 18.20% | Typical | 13,178 | | Power density | 181.8 | 181.8 | Typical | 13,162 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 57.7 | 68.9 | Typical | 11,391 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 20% | 9,798 | ### Watch out for - **25 year performance warranty** - Bottom 20% of the TOPCon 350-400 W segment, against a median of 30 yrs. - **Best for:** Residential, shaded-installations and cold-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 355 W - **Efficiency:** 18.20 % - **Voltage at Pmax (Vmp):** 33.37 V - **Current at Pmax (Imp):** 10.64 A - **Open-circuit voltage (Voc):** 38.68 V - **Short-circuit current (Isc):** 11.49 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 20.5 kg - **Area:** 1.95 m2 - **Power density:** 181.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 89.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 310 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13178 of 14005 | | Power density | 13162 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 11391 of 14005 | | Warranty | 9798 of 14005 | ## About this series The SKT345-365M10 series panels are based on advanced M10-type monocrystalline cells, which represent an optimal balance between modern architecture and ease of installation on standard roof surfaces. A key distinguishing feature of this line is the use of **Half-Cut Cell** technology, which significantly reduces energy losses resulting from internal resistance and improves the efficiency of the entire system in partial shading conditions. Thanks to the split cells, the modules operate at a lower temperature, which directly translates into their longer lifespan and yield stability on hot days. The use of **multi-layer Multi-Busbar (MBB) technology** significantly shortens the current flow path, which not only increases efficiency but also effectively minimizes the risk of micro-cracks in the silicon structure. This series was designed for private investors seeking an **elegant Full Black design** and high power density in limited spaces. The robust frame construction guarantees **increased resistance to extreme snow and wind loads**, which sets these products apart from less durable competitor solutions. By choosing these panels, the user receives a product highly resistant to potential-induced degradation (PID) that perfectly suits the specifics of the Polish climate, offering **maximum fire safety and reliability** for decades of operation. ## Notable figures - Efficiency of 18.2% is 2.2pp above the \*\*TOPCon 0-400W\*\* median (16.0%) - At 181.8 W/m² power density, this panel generates 22.0 W/m² more per unit area than \*\*TOPCon 0-400W\*\* median (159.8 W/m²) - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 0-400W\*\* median - Weight of 20.5 kg (3.0 kg below \*\*TOPCon 0-400W\*\* median of 23.5 kg) allows easier transport and roof mounting - In the top 94% for efficiency among all TOPCon panels ## Questions ### How does the TOPCon technology in the SKT345~365M10 series differ from standard PERC cells? TOPCon (Tunnel Oxide Passivated Contact) cells feature an ultrathin silicon oxide layer that significantly reduces carrier recombination, resulting in higher module efficiency and slower long-term degradation compared to conventional PERC cells. The SKT345~365M10 series reaches up to 365 Wp precisely because of this architecture, delivering better energy yield per square meter of roof space. ### What warranties come with the Sunket SKT345~365M10 panels? Sunket provides a 12-year product warranty covering manufacturing defects and material failures. In addition, a 25-year linear power output warranty guarantees that the module will not degrade below the specified power curve. For residential prosumer installations, this ensures predictable yield throughout the entire loan or subsidy repayment period. ### Are the SKT345~365M10 Full Black panels a good fit for sloped roofs with limited surface area? Yes, the M10 Full Black variant is particularly well suited for sloped roofs where both aesthetics and power density matter. The all-black frame and backsheet blend with most roofing materials, while the M10 cell format allows efficient use of available roof area. The half-cut cell layout also limits losses caused by partial shading from chimneys or dormers. ### How do the Sunket SKT345~365M10 panels perform during winter and in the cold climate typical of Poland? PV panels, including the TOPCon-based SKT345~365M10 series, generate electricity year-round. Low temperatures actually benefit silicon cell efficiency, since output power increases as operating temperature drops. The reinforced frame is rated for elevated snow and wind loads, meeting the structural requirements of Central European winter conditions. ### Are the SKT345~365M10 panels resistant to Potential Induced Degradation (PID), and why does it matter for Polish installations? Yes, the SKT345~365M10 series is engineered with high PID resistance. PID can reduce module output by over ten percent within a few years, especially in systems where the inverter operates with a grounded pole — a common configuration in Polish residential installations. Strong PID resistance directly protects long-term energy yield and the overall return on investment. ### Does the Multi-Busbar (MBB) technology in the SKT345~365M10 series genuinely improve panel durability? Yes. MBB technology distributes current flow across a larger number of thin conductors, shortening the electrical path and reducing mechanical stress within each cell. The result is significantly lower risk of microcracks during shipping, installation, and long-term operation. For the end user, this translates into more stable power output across the full 25-year power warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1-skt345-365m10-ral8001-83412b3ad118.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | -25 W, lighter, +4.9 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | -25 W, lighter, +4.9 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | Lighter, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +45 W, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +45 W, +4.8 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +4.8 pp, +5 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +45 W, +4.4 pp, +15 yr warranty | | [Sunket New Energy SKT345M10](https://comparepv.com/panel/sunket-new-energy-skt345m10) | 345 W | -10 W, -0.5 pp | | [Sunket New Energy SKT350M10](https://comparepv.com/panel/sunket-new-energy-skt350m10) | 350 W | -0.3 pp | | [Sunket New Energy SKT360M10](https://comparepv.com/panel/sunket-new-energy-skt360m10) | 360 W | Very close match | | [Sunket New Energy SKT365M10](https://comparepv.com/panel/sunket-new-energy-skt365m10) | 365 W | +10 W, +0.5 pp | | [Sunket New Energy SKT385M10](https://comparepv.com/panel/sunket-new-energy-skt385m10) | 385 W | Hotter, +1.6 pp, +5 yr warranty | | [Sunket New Energy SKT390M10](https://comparepv.com/panel/sunket-new-energy-skt390m10) | 390 W | Hotter, +1.8 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +155 W, +6.8 pp, +5 yr warranty | --- Source: https://comparepv.com/panel/sunket-new-energy-skt355m10 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.