--- title: "Resun Solar RS6S-380M Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RS6S-380M solar panel. Specs: 19.16% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs6s-380m" image: "https://comparepv.com/og/panel/resun-solar-rs6s-380m.png" updated: 2026-10-23 --- # Resun Solar RS6S-380M Middle of its segment, weak in heat 5,982 panels in the 280-480 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS6S-380M - **Series:** RS6S-M - **Rated power:** 380 W - **Cell technology:** Monocrystalline ## How it compares Compared against 280-480 W band, all technologies (5982 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 380 W | 425 W | Weak - bottom 19% | | | Module efficiency | 19.16% | 21.20% | Weak - bottom 12% | 12,979 | | Power density | 191.6 | 211.7 | Weak - bottom 12% | 12,950 | | Temperature coefficient | -0.390 | -0.310 | Weak - bottom 3% | 13,659 | | Weight (kg) | 22.5 kg | 22.0 kg | Weak - bottom 19% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.16% | 21.20% | Weak - bottom 12% | 12,979 | | Power density | 191.6 | 211.7 | Weak - bottom 12% | 12,950 | | Temperature coefficient | -0.390 | -0.310 | Weak - bottom 3% | 13,659 | | Weight per kWp | 59.2 | 53.4 | Weak - bottom 19% | 12,136 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 3% of the 280-480 W band, against a median of -0.310. Ranked 13,659th in the whole database. - **19.16% module efficiency** - Bottom 12% of the 280-480 W band, against a median of 21.20%. - **191.6 watts per square metre** - Bottom 12% of the 280-480 W band, against a median of 211.7. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 380 W - **Efficiency:** 19.16 % - **Voltage at Pmax (Vmp):** 40.50 V - **Current at Pmax (Imp):** 9.39 A - **Open-circuit voltage (Voc):** 48.90 V - **Short-circuit current (Isc):** 9.75 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:** Monocrystalline - **Cell count:** 72 ### Physical - **Length:** 1979 mm - **Width:** 1002 mm - **Thickness:** 40 mm - **Weight:** 22.5 kg - **Area:** 1.98 m2 - **Power density:** 191.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 321 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12979 of 14129 | | Power density | 12950 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 12136 of 14129 | | Warranty | 21 of 14129 | ## Pros - **5 busbars vs standard 3BB design** - The use of five busbars (5BB) improves current collection from the cell and reduces resistive losses compared to classic 3BB modules, resulting in higher efficiency (up to 20.17%) and lower risk of microcracks. - **Full PID resistance** - The modules are fully resistant to PID (Potential Induced Degradation), ensuring stable energy output in large grid-tied installations with high system voltage, without the power loss risk typical of non-resistant modules. - **30-year linear power warranty** - The power warranty covers 30 years, a growing standard in the premium segment that exceeds the typical 25-year linear warranties of older PERC generation modules with 3BB design. - **Anti-reflective, hydrophobic coating** - The coating reduces soiling buildup and improves light absorption under low-irradiance conditions (morning, evening, cloudy days), meaningfully boosting annual energy yield, especially in regions with high dust or humidity. - **Built for harsh environments** - Modules are engineered for high wind and snow loads and for operation in coastal areas, deserts, and near bodies of water, making them a solid choice for installations in extreme climate conditions. ## Cons - **No bifacial variant available** - The RS6S-M series is monofacial only, while an increasing number of competitors in the 400 Wp segment (e.g., Tier-1 bifacial modules) offer an additional 5-15% rear-side yield, limiting production potential for RS6S-M on bright surfaces or flat roofs with high albedo. - **Shorter product warranty than power warranty** - The 12-year product warranty is markedly shorter than the 30-year linear power warranty and lags behind some Tier-1 offerings, where product defect coverage reaches 15-25 years - a relevant factor when assessing total long-term service risk. - **Efficiency trails segment leader** - Maximum efficiency of 20.17% is lower than the leading peer, Heliene 108HC M10 SL All Black (20.5% at the same 400 Wp power), meaning a slightly larger module area is needed for the same power output and less optimal use of limited roof space. ## About this series The **RS6S-M** series consists of mono-crystalline photovoltaic modules built on 72 cells arranged in a 6x12 configuration, designed for grid-tied installations that require stable and predictable energy output over many years. What sets this series apart is the use of **five busbars instead of the standard three**, which improves current collection across the cell and translates into higher efficiency and reduced power losses over the long term. Thanks to an advanced junction formation technology, standard in semiconductor manufacturing, the cells achieve longer minority carrier lifetimes and a very tight distribution of performance parameters, lowering the risk of underperforming modules within a batch. The panels are fully **PID-free**, and an **anti-reflective, hydrophobic coating** reduces dust buildup and improves light absorption, particularly in low-light conditions such as mornings, evenings, and cloudy days. The robust construction makes these modules well suited to **harsh environmental conditions**, including coastal areas, deserts, and lakeside sites, withstanding high wind and snow loads. This makes the RS6S-M a solid choice for installers and investors looking for a module that combines mechanical durability with a long-term linear power warranty. ## Notable figures - At 19.2% efficiency, this panel is 2.7pp below the \*\*database\*\* median of 21.8% - Power density of 191.6 W/m² is 26.5 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 22.5 kg (4.0 kg below \*\*database\*\* median of 26.5 kg) allows easier transport and roof mounting - Ranked #12979 out of 14129 panels for efficiency in the database ## Questions ### What is the maximum power output of the RS6S-M series panels? RS6S-M series modules reach a maximum power output of up to 400 Wp. This is achieved through 72 monocrystalline cells arranged in a 6x12 layout combined with 5-busbar technology, which improves current collection from the cell and reduces power losses compared to standard 3-busbar modules. ### How does the 5-busbar technology in RS6S-M differ from standard 3-busbar modules? Five busbars instead of three provide more current-collection paths on a single cell, shortening the electron travel distance and reducing resistive losses. In practice, this translates into higher conversion efficiency and lower power degradation over time, which matters for long-term performance in grid-connected installations. ### What warranty comes with Resun Solar RS6S-M panels? Resun Solar provides a 12-year product warranty and a 30-year linear power output warranty. This means the module is guaranteed to maintain a specified power output level even after 30 years, giving investors predictable energy yield and revenue over the long operating life of the installation. ### Are RS6S-M panels resistant to PID degradation? Yes, RS6S-M modules are fully PID-resistant, meaning they are protected against power loss caused by potential differences between the cells and the module frame. This ensures stable energy production even in high-voltage systems, without the need for additional PID-compensation devices. ### Is the RS6S-M a bifacial solar panel? No, the RS6S-M series consists of monofacial modules, generating power only from the front side of the panel. However, thanks to its anti-reflective and hydrophobic coating, the module efficiently captures diffuse light, which is beneficial in low-irradiance conditions such as early morning, evening, or overcast days. ### Are RS6S-M panels suitable for harsh climate installations, such as coastal areas? Yes, the RS6S-M series features a rugged construction designed for deployment in coastal regions, deserts, and near bodies of water. The modules withstand high wind and snow loads, while the hydrophobic coating reduces dirt buildup and corrosion in environments with high humidity and salt exposure. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS6S-M_380-400W-3b59e0cf8d7c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +4.0 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +4.0 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -40 W, lighter, +3.8 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | -20 W, lighter, +3.8 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +3.8 pp | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +20 W, lighter, +3.8 pp | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +20 W, lighter, +3.8 pp | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +3.8 pp | | [Maxeon SPR-MAX3-430-R](https://comparepv.com/panel/maxeon-spr-max3-430-r) | 430 W | Cooler, +3.5 pp, +10 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +3.4 pp, +10 yr warranty | | [Resun Solar RS6S-385M](https://comparepv.com/panel/resun-solar-rs6s-385m) | 385 W | +0.3 pp | | [Resun Solar RS6S-390M](https://comparepv.com/panel/resun-solar-rs6s-390m) | 390 W | +10 W, +0.5 pp | | [Resun Solar RS6S-395M](https://comparepv.com/panel/resun-solar-rs6s-395m) | 395 W | +15 W, +0.8 pp | | [Resun Solar RS6S-400M](https://comparepv.com/panel/resun-solar-rs6s-400m) | 400 W | +20 W, +1.0 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | Cooler, +4.8 pp, +10 yr warranty | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | Cooler, +4.5 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/resun-solar-rs6s-380m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.