--- title: "Resun Solar RS6S-345P Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RS6S-345P solar panel. Specs: 17.78% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs6s-345p" image: "https://comparepv.com/og/panel/resun-solar-rs6s-345p.png" updated: 2026-10-23 --- # Resun Solar RS6S-345P Middle of its segment, weak in heat 4,187 panels in the 245-445 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS6S-345P - **Series:** RS6S-P - **Rated power:** 345 W - **Cell technology:** Polycrystalline ## How it compares Compared against 245-445 W band, all technologies (4187 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 345 W | 405 W | Weak - bottom 17% | | | Module efficiency | 17.78% | 20.63% | Weak - bottom 11% | 13,392 | | Power density | 177.8 | 206.3 | Weak - bottom 12% | 13,368 | | Temperature coefficient | -0.390 | -0.340 | Weak - bottom 6% | 13,659 | | Weight (kg) | 22.0 kg | 21.5 kg | Weak - bottom 16% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 17.78% | 20.63% | Weak - bottom 11% | 13,392 | | Power density | 177.8 | 206.3 | Weak - bottom 12% | 13,368 | | Temperature coefficient | -0.390 | -0.340 | Weak - bottom 6% | 13,659 | | Weight per kWp | 63.8 | 54.7 | Weak - bottom 16% | 13,027 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 6% of the 245-445 W band, against a median of -0.340. Ranked 13,659th in the whole database. - **17.78% module efficiency** - Bottom 11% of the 245-445 W band, against a median of 20.63%. - **177.8 watts per square metre** - Bottom 12% of the 245-445 W band, against a median of 206.3. - **Best for:** Residential. - **Not ideal for:** Hot climates, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 345 W - **Efficiency:** 17.78 % - **Voltage at Pmax (Vmp):** 38.60 V - **Current at Pmax (Imp):** 8.94 A - **Open-circuit voltage (Voc):** 47.00 V - **Short-circuit current (Isc):** 9.43 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:** 72 ### Physical - **Length:** 1956 mm - **Width:** 992 mm - **Thickness:** 40 mm - **Weight:** 22.0 kg - **Area:** 1.94 m2 - **Power density:** 177.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 292 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13392 of 14129 | | Power density | 13368 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 13027 of 14129 | | Warranty | 21 of 14129 | ## Pros - **Five-busbar cell technology** - Using five busbars instead of the standard three improves current collection from the cell and reduces resistive losses, resulting in more stable module performance over the system's operating life. - **30-year linear power warranty** - The power warranty covers 30 years, exceeding the typical 25-year terms offered by competitors in the polycrystalline segment (e.g., Jinko Solar 72 Series), lowering long-term investment risk. - **PID-free degradation resistance** - The panels are PID-free, eliminating the power loss risk associated with potential-induced degradation - a common issue in lower-cost polycrystalline modules of this generation (2016-2021). - **Better low-irradiance performance** - The anti-reflective, hydrophobic coating improves light absorption and self-cleaning, translating into higher energy yield at dawn, dusk, and on overcast days compared to modules without such coating. - **Reinforced wind and snow load rating** - The mechanical design is built for high wind and snow loads, making the series well suited to challenging climates - coastal areas, deserts, and lakeside regions. ## Cons - **Discontinued production (2021)** - The RS6S-P series was discontinued in 2021, meaning limited availability of warranty service, replacement parts, and identical-spec replacement panels for claims arising later during the 30-year warranty period. - **Below-market efficiency** - At 17.01% efficiency, the module is close to the older Jinko Solar 72 Series Polycrystalline (17%) but notably trails monocrystalline 330 Wp peers - Waaree ARKA (19.81%) and JA Solar Monocrystalline80 (23.15%) - requiring more roof area for the same output power. ## About this series The RS6S-P series consists of 72-cell polycrystalline modules engineered for on-grid installations where predictable performance over decades of operation matters most. Instead of the standard three, the panels feature **five busbars**, which improves current collection from each cell and reduces resistive losses, translating into more stable module output over time. The cells are manufactured using a junction formation technology adopted from semiconductor manufacturing, delivering longer minority carrier lifetimes and a very tight distribution of production parameters - which in turn minimizes mismatch losses across a string of panels. The panels are **PID-free**, eliminating the risk of power loss from potential-induced degradation, a common issue in cheaper alternatives. An anti-reflective, hydrophobic coating improves light absorption and helps the surface self-clean from dust, resulting in **better yield under low-light conditions** - mornings, evenings, and cloudy days. The construction withstands high wind and snow loads, making it well suited to coastal areas, deserts, and lakeside sites. The RS6S-P series is backed by a **linear power warranty** covering 30 years, along with a 12-year product warranty, making it a sound choice for investors who value low lifecycle cost over simple upfront price. ## Notable figures - Module efficiency of 17.8% is 4.0pp below average for \*\*database\*\* panels (median: 21.8%) - 177.8 W/m² power density is 40.3 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - -0.39%/°C temperature coefficient - 0.09pp worse than \*\*database\*\* median (-0.30%/°C), expect higher hot weather losses - 22.0 kg weight - 4.5 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - Ranked #13392 out of 14129 panels for efficiency in the database ## Questions ### Is the Resun Solar RS6S-P series still available for purchase? The RS6S-P series has been discontinued from Resun Solar's current production lineup. New installations should generally be based on the manufacturer's current models, though RS6S-P panels may still be available through distributors as remaining stock. Buyers should check the production date and warranty status with the seller before purchasing, as service support for discontinued models can be limited. ### What is the maximum power output of the RS6S-P panel and what installations is it suited for? RS6S-P series panels reach a maximum power output of up to 330 Wp. This is typical for classic 72-cell polycrystalline modules and works well for on-grid installations of medium to large capacity, such as single-family home roofs, outbuildings, or smaller solar farms where stable, predictable energy production matters most. ### How does the 5-busbar design differ from standard 3-busbar panels? Five busbars instead of three provide more current collection paths per cell, reducing resistive losses and shortening the electron travel distance within the cell. This results in more stable long-term performance and lower risk of micro-crack-related power loss. In practice, it translates into slightly higher and more consistent energy yield over the panel's service life. ### Are RS6S-P panels resistant to PID degradation? Yes, the RS6S-P series is PID-free, meaning it does not suffer from power loss caused by voltage-induced polarization between the cell and frame. This is a common issue in cheaper modules, especially in large installations with long panel strings. PID resistance ensures the module maintains its rated output throughout the warranty period without a sudden drop in performance after a few years. ### How well do RS6S-P panels perform in low-light and cloudy conditions? An anti-reflective, hydrophobic coating improves light absorption and helps the surface self-clean from dust and debris. As a result, RS6S-P panels deliver better output in the morning, evening, and on overcast days compared to modules without such coating. This is a significant advantage for locations with variable sunlight, such as Poland, where fully sunny days are not the norm year-round. ### What warranty comes with the Resun Solar RS6S-P series and what does it cover? The manufacturer backs the RS6S-P series with a 12-year product warranty and a 30-year linear power warranty. The product warranty covers material and workmanship defects, while the power warranty guarantees a minimum performance level throughout that period. This combination makes the series a solid choice for long-term life-cycle cost, even though the panel itself has been discontinued from current production. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS6S-P_325-345W-9ab07b301c01.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [SunLink LNSK-340M](https://comparepv.com/panel/sunlink-lnsk-340m) | 340 W | Cooler, +2.3 pp, -5 yr warranty | | [Canadian Solar CS3K-330P](https://comparepv.com/panel/canadian-solar-cs3k-330p) | 330 W | Lighter, +2.1 pp, -5 yr warranty | | [Canadian Solar CS3K-335MB-AG](https://comparepv.com/panel/canadian-solar-cs3k-335mb-ag) | 335 W | -10 W, cooler, +2.1 pp | | [Canadian Solar CS3U-395P](https://comparepv.com/panel/canadian-solar-cs3u-395p) | 395 W | +50 W, +2.1 pp, -5 yr warranty | | [SunLink LNSK-335M](https://comparepv.com/panel/sunlink-lnsk-335m) | 335 W | Cooler, +2.0 pp, -5 yr warranty | | [Canadian Solar CS3L-365P](https://comparepv.com/panel/canadian-solar-cs3l-365p) | 365 W | Cooler, +1.9 pp, -5 yr warranty | | [Canadian Solar CS3U-390P](https://comparepv.com/panel/canadian-solar-cs3u-390p) | 390 W | +45 W, +1.9 pp, -5 yr warranty | | [Resun Solar RS6S-325P](https://comparepv.com/panel/resun-solar-rs6s-325p) | 325 W | -20 W, -1.0 pp | | [Resun Solar RS6S330P](https://comparepv.com/panel/resun-solar-rs6s330p) | 330 W | -15 W, -0.8 pp | | [Resun Solar RS6S-335P](https://comparepv.com/panel/resun-solar-rs6s-335p) | 335 W | -10 W, -0.5 pp | | [Resun Solar RS6S-340P](https://comparepv.com/panel/resun-solar-rs6s-340p) | 340 W | -0.2 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +130 W, cooler, +6.2 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +125 W, cooler, +5.9 pp | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | +120 W, cooler, +5.7 pp | | [Maxeon SPR-MAX6-440](https://comparepv.com/panel/maxeon-spr-max6-440) | 440 W | Cooler, +5.0 pp, +10 yr warranty | | [Maxeon SPR-MAX6-435](https://comparepv.com/panel/maxeon-spr-max6-435) | 435 W | Cooler, +4.7 pp, +10 yr warranty | --- Source: https://comparepv.com/panel/resun-solar-rs6s-345p Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.