--- title: "Resun Solar RS6C-275P Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RS6C-275P solar panel. Specs: 16.80% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs6c-275p" image: "https://comparepv.com/og/panel/resun-solar-rs6c-275p.png" updated: 2026-10-23 --- # Resun Solar RS6C-275P Warranty pick, weak in heat 1,267 panels in the 175-375 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS6C-275P - **Series:** RS6C-P - **Rated power:** 275 W - **Cell technology:** Polycrystalline ## How it compares Compared against 175-375 W band, all technologies (1267 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 275 W | 325 W | Weak - bottom 22% | | | Module efficiency | 16.80% | 18.40% | Weak - bottom 25% | 13,614 | | Power density | 169.0 | 183.2 | Typical | 13,577 | | Temperature coefficient | -0.390 | -0.360 | Weak - bottom 20% | 13,659 | | Weight (kg) | 19.0 kg | 19.3 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 19% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 16.80% | 18.40% | Weak - bottom 25% | 13,614 | | Power density | 169.0 | 183.2 | Typical | 13,577 | | Temperature coefficient | -0.390 | -0.360 | Weak - bottom 20% | 13,659 | | Weight per kWp | 69.1 | 62.7 | Typical | 13,481 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 19% | 21 | ### Strengths - **30 year performance warranty** - Top 19% of the 175-375 W band, against a median of 25 yrs. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 20% of the 175-375 W band, against a median of -0.360. - **16.80% module efficiency** - Bottom 25% of the 175-375 W band, against a median of 18.40%. - **Best for:** Residential. - **Not ideal for:** Hot climates and tight roof space. ## Specification ### Electrical - **Rated power (Pmax):** 275 W - **Efficiency:** 16.80 % - **Voltage at Pmax (Vmp):** 31.10 V - **Current at Pmax (Imp):** 8.84 A - **Open-circuit voltage (Voc):** 38.10 V - **Short-circuit current (Isc):** 9.32 A - **Max system voltage:** 1000 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:** 60 ### Physical - **Length:** 1640 mm - **Width:** 992 mm - **Thickness:** 35 mm - **Weight:** 19.0 kg - **Area:** 1.63 m2 - **Power density:** 169.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 232 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13614 of 14129 | | Power density | 13577 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 13481 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Higher efficiency than comparable poly modules** - At 16.7% efficiency, the RS6C-P outperforms direct peers in the same power class, such as Kyocera KK270P (16.4%) and KU-60 1000V series (16.41%), making it one of the stronger results among classic polycrystalline 270 Wp modules. - **PID-free certification** - The module is certified free from potential-induced degradation (PID), eliminating power losses caused by leakage current to the frame/ground and ensuring more stable operation in large grid-tied systems with high system voltage. - **5 busbars reducing resistive losses** - The 5-busbar design (versus the standard 3 busbars on older poly modules) reduces resistive losses and improves current collection from the cell, resulting in genuinely higher daily energy yield. - **30-year linear power warranty** - The manufacturer guarantees a minimum of 80% nominal power output after 30 years (90% after 12 years), which was competitive versus the typical 25-year linear warranties offered by tier-1 manufacturers at the time of release. - **Anti-reflective, hydrophobic coating** - The additional coating limits soiling buildup and improves absorption of diffuse light, giving more stable energy production under low-irradiance conditions (early morning, dusk, overcast days). ## Cons - **Discontinued product line** - The RS6C-P series has been discontinued, meaning limited availability of identical replacement modules for warranty claims or system expansion, and potential difficulties fulfilling the long-term product warranty. - **Efficiency well below modern mono modules** - At 16.7% efficiency, the module trails a comparable DMEGC DMxxxM10T-B32HBT (22.9%) of the same 270 Wp power class by roughly 6.2 percentage points - for the same energy output, the RS6C-P requires significantly more roof area, limiting its appeal where mounting space is constrained. - **Shorter product warranty than current market leaders** - The 12-year product warranty is shorter than the 15-25 year standard now offered by tier-1 manufacturers using TOPCon/HJT technology, providing investors with less long-term protection against material and workmanship defects. ## About this series The RS6C-P series is a proven solution for grid-connected installations, built on classic 156x156 mm polycrystalline cells arranged 60 per module (6x10), split by **five busbars** for better current collection and lower resistive losses. The module stands out with its **anti-reflective, hydrophobic coating**, which improves light absorption and reduces surface dust buildup, resulting in more stable output even during morning and evening diffuse light or on cloudy days. The design was engineered for **harsh operating conditions** - coastal areas, deserts and lakeside sites - thanks to high resistance to wind and snow loads. The panel carries **PID-free** certification, eliminating the risk of potential-induced degradation and ensuring long-term power stability. An additional advantage is the **linear power warranty** with a very low annual efficiency drop, making the RS6C-P a solid choice for investors expecting predictable returns from their installation over many years. It is a fitting option for anyone looking for proven, robust poly technology without compromising on durability or build quality. ## Notable figures - Module efficiency of 16.8% is 5.0pp below average for \*\*database\*\* panels (median: 21.8%) - Power density of 169.0 W/m² is 49.1 W/m² below \*\*database\*\* median (218.1 W/m²) - needs more roof space - -0.39%/°C temperature coefficient - 0.09pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - Weight of 19.0 kg (7.5 kg below \*\*database\*\* median of 26.5 kg) allows easier transport and roof mounting - #13614 for efficiency, #13659 for temperature performance out of 14129 panels ## Questions ### Is the Resun Solar RS6C-P 270 Wp panel still available for purchase? The RS6C-P series has been discontinued and is no longer manufactured by Resun Solar. It may still be found through distributors clearing remaining stock or on the secondary market. Anyone planning to expand an existing installation built on this module should expect limited availability and consider comparable replacement models. ### What warranty comes with Resun Solar RS6C-P panels? The manufacturer backs the RS6C-P series with a 12-year product warranty and a 30-year linear power warranty. This means the output degradation of the 156x156 mm poly cells is contractually limited over that entire period, giving investors a predictable and stable energy yield from the 270 Wp module across three decades of operation. ### What do the five busbars in the RS6C-P panel provide, and is this better than standard 3BB? Five busbars (5BB) conduct current from the cell more efficiently than older 3BB layouts, reducing resistive losses and improving module efficiency. The shorter path electrons travel to the metallization grid lowers the impact of micro-cracks on output, making the RS6C-P more stable even with minor cell-level mechanical damage. ### Is the RS6C-P panel suitable for harsh environments such as coastal installations? Yes, the RS6C-P was engineered for demanding locations - coastal areas, desert regions, and sites near bodies of water. The module offers high resistance to wind and snow loads, and its anti-reflective, hydrophobic coating reduces soiling buildup, which matters under heavy moisture and salt exposure. ### What does the PID-free certification on the RS6C-P mean and why does it matter? PID-free means the RS6C-P panel resists potential-induced degradation, a phenomenon where voltage differences between cells and the grounded frame cause power loss. This certification helps the module maintain stable performance throughout its lifetime, even in large grid-tied arrays with high string voltages. ### Is the RS6C-P a bifacial panel, and how does that affect its use? No, the RS6C-P series is a monofacial panel built on classic polycrystalline cells. It generates energy only from light hitting its front surface, making it best suited for standard rooftop and ground-mount installations that don't rely on reflected light from the ground surface. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS6C-P_270-290W-efa58bf5cb4f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Canadian Solar CS3K-325P](https://comparepv.com/panel/canadian-solar-cs3k-325p) | 325 W | +50 W, +2.8 pp, -5 yr warranty | | [Canadian Solar CS3K-320P](https://comparepv.com/panel/canadian-solar-cs3k-320p) | 320 W | +45 W, +2.5 pp, -5 yr warranty | | [SunLink LNSK-325M](https://comparepv.com/panel/sunlink-lnsk-325m) | 325 W | +50 W, +2.4 pp, -5 yr warranty | | [Canadian Solar CS3K-315P](https://comparepv.com/panel/canadian-solar-cs3k-315p) | 315 W | +40 W, +2.2 pp, -5 yr warranty | | [SunLink LNSK-320M](https://comparepv.com/panel/sunlink-lnsk-320m) | 320 W | +45 W, +2.1 pp, -5 yr warranty | | [Canadian Solar CS3K-310P-AG](https://comparepv.com/panel/canadian-solar-cs3k-310p-ag) | 310 W | +35 W, heavier, +1.9 pp | | [Resun Solar RS6C270P](https://comparepv.com/panel/resun-solar-rs6c270p) | 270 W | Very close match | | [Resun Solar RS6C-280P](https://comparepv.com/panel/resun-solar-rs6c-280p) | 280 W | +0.3 pp | | [Resun Solar RS6C-285P](https://comparepv.com/panel/resun-solar-rs6c-285p) | 285 W | +10 W, +0.6 pp | | [Resun Solar RS6C-290P](https://comparepv.com/panel/resun-solar-rs6c-290p) | 290 W | +15 W, +1.0 pp | | [Resun Solar RS6C-300M](https://comparepv.com/panel/resun-solar-rs6c-300m) | 300 W | +25 W, +1.6 pp | | [Resun Solar RS6C-305M](https://comparepv.com/panel/resun-solar-rs6c-305m) | 305 W | +30 W, +1.9 pp | | [Resun Solar RS6C-310M](https://comparepv.com/panel/resun-solar-rs6c-310m) | 310 W | +35 W, +2.2 pp | | [Resun Solar RS6C-315M](https://comparepv.com/panel/resun-solar-rs6c-315m) | 315 W | +40 W, +2.6 pp | | [Resun Solar RS6C-320M](https://comparepv.com/panel/resun-solar-rs6c-320m) | 320 W | +45 W, +2.9 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +125 W, cooler, +5.8 pp | --- Source: https://comparepv.com/panel/resun-solar-rs6c-275p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.