--- title: "Resun Solar RS6K-285P Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RS6K-285P solar panel. Specs: 16.89% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs6k-285p" image: "https://comparepv.com/og/panel/resun-solar-rs6k-285p.png" updated: 2026-10-23 --- # Resun Solar RS6K-285P Warranty pick, weak in heat 1,430 panels in the 185-385 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS6K-285P - **Series:** RS6K-P - **Rated power:** 285 W - **Cell technology:** Polycrystalline ## How it compares Compared against 185-385 W band, all technologies (1430 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 285 W | 330 W | Weak - bottom 22% | | | Module efficiency | 16.89% | 18.88% | Weak - bottom 23% | 13,604 | | Power density | 168.9 | 188.2 | Weak - bottom 23% | 13,597 | | Temperature coefficient | -0.390 | -0.360 | Weak - bottom 18% | 13,659 | | Weight (kg) | 19.0 kg | 20.0 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 19% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.89% | 18.88% | Weak - bottom 23% | 13,604 | | Power density | 168.9 | 188.2 | Weak - bottom 23% | 13,597 | | Temperature coefficient | -0.390 | -0.360 | Weak - bottom 18% | 13,659 | | Weight per kWp | 66.7 | 61.8 | Typical | 13,293 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 19% | 21 | ### Strengths - **30 year performance warranty** - Top 19% of the 185-385 W band, against a median of 25 yrs. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 18% of the 185-385 W band, against a median of -0.360. - **16.89% module efficiency** - Bottom 23% of the 185-385 W band, against a median of 18.88%. - **168.9 watts per square metre** - Bottom 23% of the 185-385 W band, against a median of 188.2. - **Best for:** Residential and shaded-installations. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 285 W - **Efficiency:** 16.89 % - **Voltage at Pmax (Vmp):** 31.60 V - **Current at Pmax (Imp):** 9.02 A - **Open-circuit voltage (Voc):** 38.80 V - **Short-circuit current (Isc):** 9.42 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.390 %/degC - **Temperature coefficient of Voc:** -0.320 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Polycrystalline - **Cell count:** 120 ### Physical - **Length:** 1684 mm - **Width:** 1002 mm - **Thickness:** 35 mm - **Weight:** 19.0 kg - **Area:** 1.69 m2 - **Power density:** 168.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 241 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13604 of 14129 | | Power density | 13597 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 13293 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Half-cell cells limit microcracks** - Splitting cells in half reduces power loss from microcracks and damaged busbars, and significantly lowers susceptibility to hot-spot effects under partial shading, extending module lifespan in challenging installation conditions. - **5-busbar current collection technology** - Five busbars per cell improve current conduction and raise conversion efficiency (16.89-18.37%), while increasing resistance to microdamage propagation over years of operation. - **High resistance to PID degradation** - Stable grid power output throughout the module's service life lowers effective levelized cost of energy (LCOE) and minimizes the risk of unexpected yield drops in utility-scale installations. - **30-year linear power warranty** - A power warranty extended to 30 years exceeds the standard 25 years offered by many segment competitors (e.g., AE Solar Terra E, Selfa SV120M.3.2), improving ROI predictability for investors. - **Reinforced mechanical construction** - Anodized aluminum framing and 3.2 mm tempered anti-reflective glass, certified against wind, snow, salt mist, and ammonia exposure, make the series suitable for rooftop and ground-mount installations in demanding environments. ## Cons - **Polycrystalline tech instead of mono** - Maximum efficiency of 18.37% trails the monocrystalline peer Canadian Solar KuBlack CS3K-MS (18.7% at the same 310 Wp max power). The PV market has been shifting away from polycrystalline toward mono PERC/TOPCon for several years, which may limit future availability of service components. - **No bifacial variant available** - The series is monofacial only (is\_bifacial: false), while some competitors in the segment (including Resun's own DG variants and other manufacturers) offer bifacial modules delivering an extra 5-10% yield from ground albedo - RS6K-P does not capture this potential. - **12-year product warranty at the market floor** - The 12-year product warranty sits at the lower end of tier-1/tier-2 segment standards - many manufacturers have already moved to 15-year product warranties while keeping comparable 25-30-year linear power warranties. ## About this series The RS6K-P series consists of polycrystalline solar modules built using **half-cell technology**, which effectively reduces power losses caused by micro-cracks and damaged busbars. The use of **multi-busbar technology** with five collecting bars per cell improves current conduction and boosts conversion efficiency, while also increasing the panel's resistance to the development of micro-damage over its service life. By splitting the cells in half, the module is significantly less susceptible to the hot-spot effect caused by partial shading, which meaningfully extends its lifespan in demanding installation conditions. These panels also stand out for their strong **PID resistance**, ensuring stable energy output throughout the operating period and helping to lower the levelized cost of energy (LCOE). The 3.2mm tempered glass with an anti-reflective coating delivers solid **low-light performance**, which matters on overcast days and during early morning or dusk hours. An anodized aluminum frame provides **high mechanical strength**, certified for resistance to wind and snow loads as well as salt mist and ammonia exposure. This makes the series a solid choice for installers and investors looking for reliable, durable panels for rooftop and ground-mount applications, backed by a long-term linear power warranty. ## Notable figures - Module efficiency of 16.9% is 4.9pp below average for \*\*database\*\* panels (median: 21.8%) - 168.9 W/m² power density is 49.2 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - Temperature coefficient of -0.39%/°C is 0.09pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - 19.0 kg weight - 7.5 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - Ranked #13604 out of 14129 panels for efficiency in the database ## Questions ### What is the maximum power output of the RS6K-P series panels? RS6K-P series panels reach a maximum power output of up to 310 Wp. This is achieved through half-cell technology combined with five busbars per cell, which together improve current conduction and reduce power losses. For a typical residential installation, this translates into stable performance within a relatively compact module footprint. ### How does half-cell technology in RS6K-P differ from standard full-size cells? In half-cell technology, each silicon cell is cut in half, so the current flowing through each segment is lower, reducing resistive and thermal losses. In practice this results in higher conversion efficiency and greater resistance to microcracks and hot-spot effects caused by partial shading, extending the panel's lifespan in challenging installation conditions. ### What warranty does Resun Solar offer on the RS6K-P panels? Resun Solar provides a 12-year product warranty and a 30-year linear power output warranty. This means the panel maintains its declared percentage of rated power throughout this period, with annual degradation contractually limited, which improves the predictability of return on investment. ### Are RS6K-P panels suitable for installations in dusty areas or near the coast? Yes, RS6K-P modules are certified for resistance to salt mist and ammonia vapor, making them suitable for both coastal installations and agricultural settings, such as near livestock farms. Additionally, the anodized aluminum frame and 3.2 mm tempered glass provide strong mechanical resistance to wind and snow loads. ### Do RS6K-P panels perform well in low-light conditions, such as winter or dusk? Yes, thanks to the 3.2 mm tempered glass with an anti-reflective coating, RS6K-P modules deliver good performance under low irradiance. This matters on cloudy days, early mornings, and late afternoons, when light is diffused or hits the panel at an unfavorable angle. ### Is the RS6K-P series susceptible to PID degradation, and what does that mean for investors? No, RS6K-P panels are engineered with high resistance to PID (potential induced degradation), a phenomenon where leakage current at high string voltage causes power loss over time. As a result, energy output to the grid remains stable throughout the system's lifetime, lowering effective LCOE and increasing confidence in projected installation revenues. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS6K-P_HC_285-310W-9b1106174e97.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | +45 W, +3.0 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | +50 W, heavier, +3.0 pp | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | +50 W, +2.9 pp, -5 yr warranty | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | +40 W, +2.7 pp, -5 yr warranty | | [SunLink LNSK-330M](https://comparepv.com/panel/sunlink-lnsk-330m) | 330 W | +45 W, +2.6 pp, -5 yr warranty | | [Canadian Solar CS3K-320P](https://comparepv.com/panel/canadian-solar-cs3k-320p) | 320 W | +35 W, +2.4 pp, -5 yr warranty | | [SunLink LNSK-325M](https://comparepv.com/panel/sunlink-lnsk-325m) | 325 W | +40 W, +2.3 pp, -5 yr warranty | | [Resun Solar RS6K-290P](https://comparepv.com/panel/resun-solar-rs6k-290p) | 290 W | +0.3 pp | | [Resun Solar RS6K-295P](https://comparepv.com/panel/resun-solar-rs6k-295p) | 295 W | +10 W, +0.6 pp | | [Resun Solar RS6K-300P](https://comparepv.com/panel/resun-solar-rs6k-300p) | 300 W | +15 W, +0.9 pp | | [Resun Solar RS6K-305P](https://comparepv.com/panel/resun-solar-rs6k-305p) | 305 W | +20 W, +1.2 pp | | [Resun Solar RS6K-310P](https://comparepv.com/panel/resun-solar-rs6k-310p) | 310 W | +25 W, +1.5 pp | | [Resun Solar RS6K-325M](https://comparepv.com/panel/resun-solar-rs6k-325m) | 325 W | +40 W, cooler, +2.4 pp | | [Resun Solar RS6K-330M](https://comparepv.com/panel/resun-solar-rs6k-330m) | 330 W | +45 W, cooler, +2.7 pp | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +155 W, cooler, +6.0 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +150 W, cooler, +5.8 pp | --- Source: https://comparepv.com/panel/resun-solar-rs6k-285p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.