--- title: "Resun Solar RS7E-230M Solar Panel: Specs & Datasheet | ComparePV" description: "Resun Solar RS7E-230M solar panel. Specs: 21.06% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs7e-230m" image: "https://comparepv.com/og/panel/resun-solar-rs7e-230m.png" updated: 2026-10-23 --- # Resun Solar RS7E-230M Space saver, weak in heat 747 panels in the 130-330 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS7E-230M - **Series:** RS7E-M - **Rated power:** 230 W - **Cell technology:** Monocrystalline ## How it compares Compared against 130-330 W band, all technologies (747 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 230 W | 275 W | Typical | | | Module efficiency | 21.06% | 17.10% | Strong - top 5% | 9,694 | | Power density | 210.6 | 169.7 | Strong - top 4% | 9,650 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 25% | 13,659 | | Weight (kg) | 12.0 kg | 18.0 kg | Strong - top 7% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 20% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.06% | 17.10% | Strong - top 5% | 9,694 | | Power density | 210.6 | 169.7 | Strong - top 4% | 9,650 | | Temperature coefficient | -0.390 | -0.370 | Weak - bottom 25% | 13,659 | | Weight per kWp | 52.2 | 66.1 | Strong - top 7% | 5,678 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 20% | 21 | ### Strengths - **210.6 watts per square metre** - Top 4% of the 130-330 W band, against a median of 169.7. Ranked 9,650th in the whole database. - **21.06% module efficiency** - Top 5% of the 130-330 W band, against a median of 17.10%. Ranked 9,694th in the whole database. - **52.2 kg per kWp** - Top 7% of the 130-330 W band, against a median of 66.1. Ranked 5,678th in the whole database. ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 25% of the 130-330 W band, against a median of -0.370. - **Best for:** Residential and BIPV. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 230 W - **Efficiency:** 21.06 % - **Voltage at Pmax (Vmp):** 20.19 V - **Current at Pmax (Imp):** 11.39 A - **Open-circuit voltage (Voc):** 24.10 V - **Short-circuit current (Isc):** 11.99 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:** 1560 mm - **Width:** 700 mm - **Thickness:** 35 mm - **Weight:** 12.0 kg - **Area:** 1.09 m2 - **Power density:** 210.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 194 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9694 of 14129 | | Power density | 9650 of 14129 | | Temperature coefficient | 13659 of 14129 | | Weight | 5678 of 14129 | | Warranty | 21 of 14129 | ## Pros - **9-busbar (9BB) cell technology** - The multi-busbar current-path grid reduces internal resistance and distributes mechanical stress across more solder points, lowering the risk of microcracks and broken current paths compared to older 3BB/5BB designs, translating into more stable power output over the panel's service life. - **Salt mist and ammonia resistance certification** - Additional IEC 61701 (salt mist) and IEC 62716 (ammonia) testing go beyond the standard certification package, enabling use in coastal and agricultural/livestock installations where frame and connector corrosion is the main lifespan-limiting factor for competing series. - **High efficiency up to 21.06%** - The upper efficiency bound of 21.06% places this series above comparable Kyocera ECONOROOTS (20.76%) and well above TPL P-54 (16.01%) and JS200W-225W (17.13%), yielding higher energy capture per unit of mounting area. - **Compact module footprint** - Small physical dimensions at 210-230 Wp enable installation on small roofs, carports, and specialty structures where standard 400+ Wp panels with larger surface areas won't fit. - **Uniform all-black aesthetic** - Full black framing, backsheet, and cells minimize visual contrast on the roof, a key selling point for facade installations and modern architecture where appearance matters as much as technical specs. ## Cons - **Low unit power per module** - The 210-230 Wp range sits well below current market standards (400-600+ Wp among competitors, including Resun's own RS7K-M series at 355-380 Wp), meaning more modules, connectors, and installation hours per kWp than with modern large-format panels. - **No bifacial technology** - The module does not use bifacial cells, so it misses out on additional yield from reflected irradiance - a feature increasingly offered even in the compact-panel segment by competing manufacturers. - **Standard, not extended product warranty** - 12 years of product warranty matches the market average of several years ago, while many tier-1 manufacturers now offer 15-25 years of product coverage alongside a comparable 30-year power warranty. ## About this series The RS7E-M series is a compact, all-black monocrystalline module line designed for installations where both aesthetics and reliability under demanding conditions matter. The cells use **multi-busbar (9BB)** technology, which lowers internal power loss while reducing the risk of microcracks and broken current paths, meaningfully extending the module's service life. Thanks to high-transmittance tempered glass, the module maintains **strong low-light performance**, a benefit installers will appreciate in regions with variable irradiance. RS7E-M also stands out for its **high mechanical strength** against wind and snow loads, and it is additionally certified for resistance to salt mist and ammonia, making it a solid choice for coastal, agricultural, or livestock-facility installations. The uniform all-black housing gives the panel a sleek look that blends naturally into modern building architecture and facades where visual appearance counts. Its compact dimensions make it a practical solution wherever standard-size modules don't fit, such as small roofs, carports, or specialty structures. This series is aimed at installers seeking a combination of **high reliability**, aesthetics, and stable, predictable power output over the long term. ## Notable figures - Module efficiency of 21.1% is 0.8pp below average for \*\*database\*\* panels (median: 21.8%) - Power density of 210.6 W/m² is 7.5 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 - At 12.0 kg, this panel is 14.5 kg lighter than \*\*database\*\* median (26.5 kg) - easier handling during installation - In the top 69% for efficiency among all N-type panels ## Questions ### What is the maximum power output of the Resun Solar RS7E-M panel? The RS7E-M series reaches a maximum power output of up to 230 Wp. Due to its compact size, this is a low unit power compared to standard 400-600 Wp panels, but the module is designed for small surfaces where power density on limited space matters more than maximizing total system output. ### Is the RS7E-M suitable for small roofs or carports where standard panels don't fit? Yes, this is one of the series' main applications. The module's compact dimensions allow it to fit on small roofs, carports, garages, or specialized structures where standard, larger solar panels simply won't fit or can't efficiently use the available space. ### What warranty comes with Resun Solar RS7E-M panels? The manufacturer provides a 12-year product warranty along with a 30-year linear power output warranty. This means the module maintains its declared, predictable performance throughout that period, giving long-term investment security for specialized and aesthetic installations. ### What does 9BB technology do in the RS7E-M and does it matter in practice? Multi-busbar (9BB) technology reduces internal power losses within the cell and lowers the risk of microcracks and current path interruptions. In practice, this translates to a longer panel lifespan and reduced performance degradation over time, even under less-than-ideal handling or mounting conditions. ### Is the RS7E-M corrosion-resistant and suitable for coastal or agricultural installations? Yes, the module is certified for salt mist and ammonia resistance, confirming its durability in aggressive environments. This makes the RS7E-M a good fit for coastal installations, agricultural sites, and livestock buildings, where standard panels would corrode faster. ### Does the RS7E-M look good on a facade with its all-black housing? Yes, the module features a uniform, all-black housing with no visible contrasting frame elements. This appearance blends well with modern building architecture and facades, where the aesthetics of a solar installation are just as important as its technical specifications. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS7E-M_MONO_9BB_210-230W-2c3245122f3f.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | +50 W, cooler, +2.2 pp | | [Gamko New Energy GKA182M180W](https://comparepv.com/panel/gamko-new-energy-gka182m180w) | 180 W | -50 W, lighter, +1.9 pp | | [Gamko New Energy GKA182M200W](https://comparepv.com/panel/gamko-new-energy-gka182m200w) | 200 W | -30 W, lighter, +1.9 pp | | [Gamko New Energy GKA182M240W](https://comparepv.com/panel/gamko-new-energy-gka182m240w) | 240 W | +10 W, lighter, +1.9 pp | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | +30 W, lighter, +1.9 pp | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | +40 W, lighter, +1.9 pp | | [DMEGC DM270M10T-B32HBT](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-dm270m10t-b32hbt) | 270 W | +40 W, cooler, +1.8 pp | | [Heckert Solar ZEUS 1.2 FullBlack 275W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-275w) | 275 W | +45 W, cooler, +1.8 pp | | [Resun Solar RS7E-185P](https://comparepv.com/panel/resun-solar-rs7e-185p) | 185 W | -45 W, -4.1 pp | | [Resun Solar RS7E-190P](https://comparepv.com/panel/resun-solar-rs7e-190p) | 190 W | -40 W, -3.7 pp | | [Resun Solar RS7E-195P](https://comparepv.com/panel/resun-solar-rs7e-195p) | 195 W | -35 W, -3.2 pp | | [Resun Solar RS7E-200P](https://comparepv.com/panel/resun-solar-rs7e-200p) | 200 W | -30 W, -2.7 pp | | [Resun Solar RS7E-205P](https://comparepv.com/panel/resun-solar-rs7e-205p) | 205 W | -25 W, -2.3 pp | | [Resun Solar RS7E-210M](https://comparepv.com/panel/resun-solar-rs7e-210m) | 210 W | -20 W, -1.8 pp | | [Resun Solar RS7E-215M](https://comparepv.com/panel/resun-solar-rs7e-215m) | 215 W | -15 W, -1.4 pp | | [Resun Solar RS7E-220M](https://comparepv.com/panel/resun-solar-rs7e-220m) | 220 W | -10 W, -0.9 pp | | [Heckert Solar ZEUS 3.2 285WP FullBlack](https://comparepv.com/panel/heckert-solar-zeus-3-2-285wp-fullblack) | 285 W | +55 W, cooler, +2.1 pp | --- Source: https://comparepv.com/panel/resun-solar-rs7e-230m Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.