--- title: "Resun Solar RSM-100M Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RSM-100M solar panel. Specs: 15.44% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rsm-100m" image: "https://comparepv.com/og/panel/resun-solar-rsm-100m.png" updated: 2026-10-23 --- # Resun Solar RSM-100M Warranty pick, weak in heat 231 panels in the 0-200 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RSM-100M - **Series:** RSM-100M - **Rated power:** 100 W - **Cell technology:** Monocrystalline ## How it compares Compared against 0-200 W band, all technologies (231 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 100 W | 145 W | Weak - bottom 17% | | | Module efficiency | 15.44% | 15.70% | Typical | 13,853 | | Power density | 146.3 | 156.3 | Typical | 13,964 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 17% | 13,659 | | Weight (kg) | 7.0 kg | 11.2 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 18% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 15.44% | 15.70% | Typical | 13,853 | | Power density | 146.3 | 156.3 | Typical | 13,964 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 17% | 13,659 | | Weight per kWp | 70.0 | 71.9 | Typical | 13,525 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 18% | 21 | ### Strengths - **30 year performance warranty** - Top 18% of the 0-200 W band, against a median of 25 yrs. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 17% of the 0-200 W band, against a median of -0.370. - **Best for:** Off-grid and residential. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 100 W - **Efficiency:** 15.44 % - **Voltage at Pmax (Vmp):** 17.90 V - **Current at Pmax (Imp):** 5.59 A - **Open-circuit voltage (Voc):** 21.95 V - **Short-circuit current (Isc):** 5.87 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:** Monocrystalline - **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 | 13853 of 14129 | | Power density | 13964 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 13525 of 14129 | | Warranty | 21 of 14129 | ## Pros - **5-busbar cell configuration** - 36 monocrystalline cells in a 5BB layout provide more even current collection and lower resistive losses compared to older 2BB/3BB designs, translating into more stable energy yield over the panel's lifetime. - **Anti-reflective and hydrophobic coating** - An added glass coating reduces soiling buildup and improves light absorption, lowering cleaning frequency and benefiting output in low-irradiance conditions such as early morning or overcast days. - **High mechanical durability** - An anodized aluminum frame and tempered glass deliver wind load resistance of roughly 2400 Pa, allowing deployment in harsh environments such as coastal, desert, or high-humidity sites. - **30-year linear power warranty** - A 30-year power warranty exceeds the industry standard (typically 25 years from tier-1 makers such as JA Solar or Trina), giving investors a more predictable, long-term degradation curve. - **Purpose-built for niche applications** - The low power rating (100 Wp) and compact form factor make the panel well suited for RVs, boats, cabins, and off-grid systems where weight and mounting area are key constraints. ## Cons - **Below-peer efficiency** - At 15.44% efficiency, this module trails comparable 100 Wp panels - JA Solar reaches 21.29%, Easun Power 19.63%, and even TPL Solar edges ahead at 15.67%. A 4-6 percentage point gap versus tier-1 manufacturers means lower energy yield per unit of mounting area. ## About this series The RSM-100M series is a compact monocrystalline module built for small-scale installations where consistent output matters despite limited mounting space. Using 36 monocrystalline cells in a 5-busbar configuration, the panel delivers more even current collection and lower resistive losses than older 2BB or 3BB designs. It is a strong fit for owners of caravans, boats, cabins, and off-grid systems, where every watt of power at low weight counts. The module stands out with its **anti-reflective, hydrophobic coating**, which improves light absorption and reduces dust buildup on the glass surface, cutting down on maintenance and cleaning. The design delivers **strong performance under low-light conditions**, an important advantage in early mornings, evenings, and overcast days, when cheaper modules lose efficiency. An anodized aluminum frame and tempered glass provide **high resistance to wind and snow loads**, allowing the panel to perform reliably in harsh environments such as coastal areas, deserts, and humid regions. Another key advantage is the **linear power warranty**, which exceeds common industry standards and gives investors a predictable, gradual decline in output over many years of service. ## Notable figures - At 15.4% efficiency, this panel is 6.4pp below the \*\*database\*\* median of 21.8% - At 146.3 W/m², this panel generates 71.8 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - 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 - #13853 for efficiency, #13659 for temperature performance out of 14129 panels ## Questions ### What is the Resun RSM-100M 100 Wp panel best suited for? The RSM-100M is a compact monocrystalline module designed for small off-grid applications: campervans, boats, cabins, control cabinets, and battery charging setups. At 100 Wp and a low weight, it is easy to transport and install in limited space, such as the roof of a camper, where the power-to-weight ratio matters more than maximizing total output for a whole-home system. ### How does the 5-busbar design in the RSM-100M differ from older 2BB/3BB panels? In 5BB technology, current from the cell is collected through five parallel metallization strips instead of two or three as in older designs. This shortens the current path, reduces resistive losses, and lowers the risk of microcracks in the cell. In practice, this results in more stable long-term performance and a smaller power drop under partial shading. ### What warranty comes with the Resun RSM-100M panel? Resun provides a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power warranty, meaning a predictable, gradual power decline over time rather than a stepped guarantee. For the end user, this means the panel should still deliver a significant share of its original rated output after three decades of operation. ### Is the RSM-100M panel resistant to high wind and snow loads despite its small size? Yes, despite its compact size, the frame is made of anodized aluminum and the glass is tempered, providing resistance to typical wind and snow loads for this panel class. This allows it to be used not only in cabins but also in more demanding environments, such as coastal areas or high-humidity regions, without a risk of rapid structural degradation. ### Does the anti-reflective coating on the RSM-100M actually reduce cleaning frequency? The anti-reflective, hydrophobic glass coating reduces dust, dirt, and water buildup on the surface, meaning less frequent cleaning is needed, which is especially useful for mobile installations like boats or campervans where panel access can be limited. The coating also improves light absorption, partially offsetting power losses from a dirty or wet surface. ### Does the RSM-100M perform well under low-light conditions, such as early morning or cloudy days? Yes, the panel's design is optimized for performance under low irradiance, which matters during early morning, evening, and overcast days. Unlike cheaper modules that lose efficiency in these conditions, the RSM-100M maintains more stable energy output, which is important in off-grid systems where every watt counts. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RSM-100M_MONO_100W-b2d8b4443b59.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Gamko New Energy GKA182M150W](https://comparepv.com/panel/gamko-new-energy-gka182m150w) | 150 W | +50 W, heavier, +7.6 pp | | [Gamko New Energy GKA182M120W](https://comparepv.com/panel/gamko-new-energy-gka182m120w) | 120 W | +20 W, +7.6 pp | | [Gamko New Energy GKA182M135W](https://comparepv.com/panel/gamko-new-energy-gka182m135w) | 135 W | +35 W, +7.6 pp | | [Gamko New Energy GKA182M100W](https://comparepv.com/panel/gamko-new-energy-gka182m100w) | 100 W | +7.6 pp | | [Gamko New Energy GKA182M110W](https://comparepv.com/panel/gamko-new-energy-gka182m110w) | 110 W | +10 W, +7.6 pp | | [JA Solar NS-100MH-36](https://comparepv.com/panel/ja-solar-ns-100mh-36) | 100 W | Cooler, +5.8 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-100MH-36](https://comparepv.com/panel/polycrown-solar-tech-ns-100mh-36) | 100 W | Cooler, +5.8 pp, -5 yr warranty | | [Renesola YH120W-18M](https://comparepv.com/panel/renesola-yh120w-18m) | 120 W | +20 W, cooler, +4.2 pp | | [Easun Power YH100W-12M](https://comparepv.com/panel/easun-power-yh100w-12m) | 100 W | Hotter, lighter, +4.2 pp | | [Isola New Energy YH120W-18M](https://comparepv.com/panel/isola-new-energy-yh120w-18m) | 120 W | +20 W, cooler, +4.2 pp | | [Gamko New Energy GKA182M160W](https://comparepv.com/panel/gamko-new-energy-gka182m160w) | 160 W | +60 W, heavier, +7.6 pp | | [SunEvo Solar SE5-150M](https://comparepv.com/panel/sunevo-solar-se5-150m) | 150 W | +50 W, +3.5 pp, -5 yr warranty | | [LinkSol LKS-5M-115](https://comparepv.com/panel/linksol-lks-5m-115) | 115 W | +15 W, +1.8 pp | | [Longi Solar DLXN-M10-100W](https://comparepv.com/panel/longi-solar-dlxn-m10-100w) | 100 W | Hotter, lighter, +1.6 pp | | [Wanze Energy DLXN-M10-100W](https://comparepv.com/panel/wanze-energy-dlxn-m10-100w) | 100 W | Hotter, +1.6 pp, -20 yr warranty | | [LinkSol LKS-5M-110](https://comparepv.com/panel/linksol-lks-5m-110) | 110 W | +10 W, +1.1 pp | --- Source: https://comparepv.com/panel/resun-solar-rsm-100m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.