--- title: "Resun Solar RS8H-M-DG 535W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8H-M-DG 535W solar panel. Specs: 22.53% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8h-m-dg" updated: 2026-09-11 --- # Resun Solar RS8H-M-DG Middle of its segment, weak in heat 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8H-M-DG - **Series:** RS8H-M-DG - **Rated power:** 535 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 535 W | 510 W | Strong - top 10% | | | Module efficiency | 22.53% | 22.73% | Typical | 3,982 | | Power density | 225.3 | 227.4 | Typical | 4,206 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 28.9 kg | 27.0 kg | Weak - bottom 23% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.53% | 22.73% | Typical | 3,982 | | Power density | 225.3 | 227.4 | Typical | 4,206 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 54.0 | 52.4 | Weak - bottom 23% | 8,224 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 20% of the TOPCon 500-550 W segment, against a median of -0.290. - **54.0 kg per kWp** - Bottom 23% of the TOPCon 500-550 W segment, against a median of 52.4. - **Best for:** Commercial and utility-scale. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 535 W - **Efficiency:** 22.53 % - **Voltage at Pmax (Vmp):** 39.58 V - **Current at Pmax (Imp):** 13.52 A - **Open-circuit voltage (Voc):** 46.50 V - **Short-circuit current (Isc):** 14.42 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2094 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 28.9 kg - **Area:** 2.37 m2 - **Power density:** 225.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 452 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3982 of 14005 | | Power density | 4206 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 8224 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8H-M-DG series is a bifacial photovoltaic module built in a double-glass design, engineered for installations that aim to capture extra energy yield from the rear side of the panel. It is based on **N-type TOPCon cells** using half-cut technology, which reduces internal power loss within the module and lowers susceptibility to hot-spot effects caused by partial shading. The applied **multi-busbar (16BB) technology** reduces the risk of performance loss from micro-cracks or broken busbars, translating into higher long-term reliability. The manufacturer highlights **strong PID resistance**, which limits power degradation and helps lower the effective levelized cost of energy (LCOE). Thanks to tempered glass with enhanced light transmittance, the panel maintains solid **low-light performance**, while certifications confirm resistance to high wind and snow loads as well as salt mist and ammonia exposure. This makes it a fitting choice for investors in rooftop and ground-mount installations who value durability, stable energy output under challenging conditions, and a favorable 30-year linear power warranty. ## Notable figures - At 22.5% efficiency, this panel is on par with typical \*\*TOPCon 500-550W\*\* modules - At 225.3 W/m² power density, roof space requirements are typical for \*\*TOPCon 500-550W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 500-550W\*\* panels - Weight of 28.9 kg is 1.9 kg above \*\*TOPCon 500-550W\*\* median (27.0 kg) - verify structural support - #3982 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### How much extra power can you get from the bifacial design of the RS8H-M-DG panel? Thanks to its bifacial construction, the RS8H-M-DG module also generates energy from its rear side, capturing light reflected from the ground. Depending on the albedo of the surface beneath the array (e.g., light gravel, snow, white roofing membrane), mounting height, and tilt angle, the additional energy gain can range from a few percent up to more than ten percent compared to a monofacial module of the same 535 Wp nominal power. ### How does the TOPCon technology in the RS8H-M-DG differ from classic PERC cells? The N-type TOPCon cells used in the RS8H-M-DG have lower recombination losses and higher base efficiency than older P-type PERC cells, resulting in higher power output from the same surface area. N-type TOPCon also shows lower light-induced degradation (LID) and performs better at higher temperatures, so the panel loses less power on hot days. ### What warranty comes with the RS8H-M-DG panels, and what does it cover? Resun Solar provides a 15-year product warranty for the RS8H-M-DG series, covering material and workmanship defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees a minimum level of energy production over three decades, which is important when estimating the long-term profitability of an installation. ### Is the RS8H-M-DG suitable for harsh environments, such as coastal areas? Yes, the RS8H-M-DG module holds certifications confirming resistance to salt mist and ammonia, making it a suitable choice for coastal installations and agricultural sites exposed to ammonia fumes, such as those near livestock facilities. The panel is also tested for high wind and snow loads, confirming its durability under varying climate conditions. ### What benefit does the 16BB multi-busbar technology provide on the RS8H-M-DG panel? The 16-busbar technology increases the number of electrical connections across the cell surface, so if a microcrack or busbar break occurs, current can flow through alternative paths. This reduces power degradation over the module's operating life and increases installation reliability, especially where panels are exposed to mechanical stress such as transport or strong wind. ### Does the RS8H-M-DG perform well in low-light conditions, such as in fall or winter? Yes, thanks to tempered glass with increased light transmittance and N-type TOPCon cells, the panel maintains relatively good performance under diffuse and weaker light typical of cloudy fall and winter days. The double-glass construction further supports stable operating parameters in these conditions, though energy output will always be lower than on sunny summer days. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8H-M-DG-510-535W-9b7f32bc453e.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | -40 W, lighter, +2.3 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +2.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | -45 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.0 pp | | [Resun Solar RS8H-M-480](https://comparepv.com/panel/resun-solar-rs8h-m-480) | 480 W | -55 W, hotter, -2.3 pp | | [Resun Solar RS8H-M-485](https://comparepv.com/panel/resun-solar-rs8h-m-485) | 485 W | -50 W, hotter, -2.1 pp | | [Resun Solar RS8H-M-490](https://comparepv.com/panel/resun-solar-rs8h-m-490) | 490 W | -45 W, hotter, -1.9 pp | | [Resun Solar RS8H-M-495](https://comparepv.com/panel/resun-solar-rs8h-m-495) | 495 W | -40 W, hotter, -1.7 pp | | [Resun Solar RS8H-M-500](https://comparepv.com/panel/resun-solar-rs8h-m-500) | 500 W | -35 W, hotter, -1.5 pp | | [Resun Solar RS8H-M-505](https://comparepv.com/panel/resun-solar-rs8h-m-505) | 505 W | -30 W, hotter, -1.3 pp | | [Resun Solar RS8H-M-510](https://comparepv.com/panel/resun-solar-rs8h-m-510) | 510 W | Hotter, lighter, -1.1 pp | | [Resun Solar RS8H-M-515](https://comparepv.com/panel/resun-solar-rs8h-m-515) | 515 W | Hotter, lighter, -0.8 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +55 W, lighter, +1.3 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8h-m-dg Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.