--- title: "Resun Solar RSM-100P-EX 100W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RSM-100P-EX 100W solar panel. Specs: 14.70% efficiency, Polycrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rsm-100p-ex" updated: 2026-09-11 --- # Resun Solar RSM-100P-EX Warranty pick, weak in heat 223 panels in the 0-200 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RSM-100P-EX - **Series:** RSM-100P - **Rated power:** 100 W - **Cell technology:** Polycrystalline ## How it compares Compared against 0-200 W band, all technologies (223 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 100 W | 140 W | Weak - bottom 17% | | | Module efficiency | 14.70% | 15.70% | Typical | 13,858 | | Power density | 146.3 | 156.3 | Typical | 13,842 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 16% | 13,579 | | Weight (kg) | 7.0 kg | 11.2 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 16% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 14.70% | 15.70% | Typical | 13,858 | | Power density | 146.3 | 156.3 | Typical | 13,842 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 16% | 13,579 | | Weight per kWp | 70.0 | 72.0 | Typical | 13,406 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 16% | 21 | ### Strengths - **30 year performance warranty** - Top 16% of the 0-200 W band, against a median of 25 yrs. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 16% of the 0-200 W band, against a median of -0.370. - **Best for:** Off-grid. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 100 W - **Efficiency:** 14.70 % - **Voltage at Pmax (Vmp):** 18.92 V - **Current at Pmax (Imp):** 5.29 A - **Open-circuit voltage (Voc):** 22.70 V - **Short-circuit current (Isc):** 5.78 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:** 36 ### Physical - **Length:** 1020 mm - **Width:** 670 mm - **Thickness:** 30 mm - **Weight:** 7.0 kg - **Area:** 0.68 m2 - **Power density:** 146.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 85 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13858 of 14005 | | Power density | 13842 of 14005 | | Temperature coefficient | 13579 of 14005 | | Weight | 13406 of 14005 | | Warranty | 21 of 14005 | ## About this series The RSM-100P-EX series consists of compact 100W polycrystalline modules designed for small on-grid installations, mobile systems, and applications where predictable output matters within limited mounting space. The panels feature an **anti-reflective, hydrophobic coating** that improves light absorption and reduces dust buildup on the surface, helping the module maintain high efficiency without frequent cleaning. Built on 36 cells with 5 busbars, the construction delivers stable electrical parameters, and the manufacturer guarantees a **positive power output tolerance of 0/+5W**, removing the risk of underestimating actual energy yield. The series delivers **strong performance in low-light conditions**, translating into real energy gains during mornings, evenings, and overcast days. A reinforced anodized aluminum frame and 3.2mm tempered glass provide **resistance to high wind and snow loads**, making the panels suitable for demanding climates, including coastal, desert, and lakeside environments. An additional advantage is the **30-year linear power warranty** with an annual degradation rate of just 0.5%, contributing to a lower LCOE over the full lifetime of the installation. ## Notable figures - Efficiency of 14.7% is 7.1pp below the \*\*database\*\* median (21.8%) - 146.3 W/m² power density is 71.8 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - At -0.39%/°C, loses 0.09pp more power per degree than \*\*database\*\* median (-0.30%/°C) - 7.0 kg weight - 19.5 kg lighter than \*\*database\*\* median (26.5 kg), reducing installation effort - #13858 for efficiency, #13579 for temperature performance out of 14005 panels ## Questions ### What installations is the Resun Solar RSM-100P-EX 100W panel suitable for? The RSM-100P-EX panel is primarily designed for small on-grid installations, mobile systems (RVs, boats, trailers), and off-grid applications with limited mounting space, such as garage roofs, carports, or measurement stations. Its compact size and 100W power rating allow easy system scaling by combining multiple modules where predictable performance is needed on a small footprint. ### What does the positive power tolerance of 0/+5W mean for RSM-100P panels? A power tolerance of 0/+5W guarantees that the actual output of the delivered panel is never lower than the rated 100W, and may even be up to 5W higher. This gives installers confidence that a system design based on nominal power won't underperform in practice, eliminating the risk of underestimated energy yield and simplifying inverter and cabling selection. ### What warranty do Resun Solar RSM-100P panels come with, and how does power degrade over time? The manufacturer provides a 12-year product warranty along with a 30-year linear power warranty, with annual degradation as low as 0.5%. This means the panel should retain a significant portion of its original output even after 30 years of operation, directly lowering LCOE and improving the long-term profitability of the investment. ### Do RSM-100P panels require frequent cleaning from dust and debris? Not under normal conditions. The anti-reflective, hydrophobic coating on the glass surface reduces dust accumulation and helps rainwater run off more easily, naturally self-cleaning the panel. As a result, the module maintains high efficiency for longer, and cleaning is only needed occasionally, especially in dusty regions. ### Can RSM-100P panels withstand strong wind loads and heavy snow? Yes, the reinforced anodized aluminum frame combined with 3.2 mm tempered glass gives the panel high mechanical resistance to wind and snow loads. This makes the module well-suited for demanding climates, including coastal areas, waterfront locations, and desert environments where extreme weather conditions are common. ### Does the RSM-100P panel perform well on cloudy days or in low-light conditions? Yes, the RSM-100P series is engineered for strong low-irradiance performance, delivering real energy gains during morning and evening hours as well as on overcast days. This is a key advantage in temperate climates where full sun isn't available all day, ensuring the system still generates meaningful output under suboptimal conditions. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RSM100P-EX-3160b871ab24.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Waaree WS-135 /12V](https://comparepv.com/panel/waaree-ws-135-12v) | 135 W | Heavier, +1.2 pp, -20 yr warranty | | [Waaree WS-110 /12V](https://comparepv.com/panel/waaree-ws-110-12v) | 110 W | Heavier, +1.1 pp, -20 yr warranty | | [Resun Solar RSM080P](https://comparepv.com/panel/resun-solar-rsm080p) | 80 W | -20 W, lighter, +0.8 pp | | [Waaree WS-130 /12V](https://comparepv.com/panel/waaree-ws-130-12v) | 130 W | +30 W, heavier, -20 yr warranty | | [Resun Solar RS6E-150P](https://comparepv.com/panel/resun-solar-rs6e-150p) | 150 W | +50 W, +0.5 pp | | [Gamko New Energy GKA182M150W](https://comparepv.com/panel/gamko-new-energy-gka182m150w) | 150 W | +50 W, heavier, +8.3 pp | | [Gamko New Energy GKA182M160W](https://comparepv.com/panel/gamko-new-energy-gka182m160w) | 160 W | +60 W, heavier, +8.3 pp | | [SunEvo Solar SE5-150M](https://comparepv.com/panel/sunevo-solar-se5-150m) | 150 W | +50 W, +4.2 pp, -5 yr warranty | | [LinkSol LKS-5M-115](https://comparepv.com/panel/linksol-lks-5m-115) | 115 W | +15 W, +2.5 pp | | [Longi Solar DLXN-M10-100W](https://comparepv.com/panel/longi-solar-dlxn-m10-100w) | 100 W | Hotter, lighter, +2.3 pp | | [Wanze Energy DLXN-M10-100W](https://comparepv.com/panel/wanze-energy-dlxn-m10-100w) | 100 W | Hotter, +2.3 pp, -20 yr warranty | | [LinkSol LKS-5M-110](https://comparepv.com/panel/linksol-lks-5m-110) | 110 W | +10 W, +1.8 pp | | [Runtech China RT120WM](https://comparepv.com/panel/runtech-china-rt120wm) | 120 W | +20 W, cooler, +1.2 pp | --- Source: https://comparepv.com/panel/resun-solar-rsm-100p-ex Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.