--- title: "Resun Solar RS8I575M-BD 575W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8I575M-BD 575W solar panel. Specs: 22.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8i575m-bd" updated: 2026-09-11 --- # Resun Solar RS8I575M-BD Solid all-round for its segment 1,018 panels in the segment TOPCon 550-600 W ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8I575M-BD - **Series:** RS8I-M-BD - **Rated power:** 575 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 550-600 W (1018 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 575 W | 580 W | Typical | | | Module efficiency | 22.30% | 22.44% | Typical | 5,100 | | Power density | 222.6 | 224.4 | Typical | 5,549 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 28.6 kg | 31.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.30% | 22.44% | Typical | 5,100 | | Power density | 222.6 | 224.4 | Typical | 5,549 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 49.7 | 53.8 | Typical | 3,212 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Commercial and utility-scale. ## Specification ### Electrical - **Rated power (Pmax):** 575 W - **Efficiency:** 22.30 % - **Voltage at Pmax (Vmp):** 42.92 V - **Current at Pmax (Imp):** 13.40 A - **Open-circuit voltage (Voc):** 51.50 V - **Short-circuit current (Isc):** 14.20 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:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.6 kg - **Area:** 2.58 m2 - **Power density:** 222.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 486 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 5100 of 14005 | | Power density | 5549 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 3212 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8I-M-BD series from Resun Solar is built around **N-type TOPCon cells** featuring **SMBB (multi busbar) technology**, addressing the growing demand from investors for both efficiency and long-term durability in solar installations. Thanks to these advanced silicon cells, the panels deliver reduced power loss at high temperatures and better response to low-light conditions, translating into a real gain in energy yield under Poland's typical mix of overcast days and fluctuating temperatures. The **reinforced frame** construction provides strong mechanical resistance to wind and snow loads, making the BD series a solid choice for both residential rooftop installations and larger commercial projects exposed to demanding weather conditions. What sets the RS8I-M-BD apart from many competing solutions is its combination of **high power density** with stable long-term power degradation, directly contributing to a lower LCOE for the investment. The panels carry a full set of quality certifications (TUV, IEC, VDE, CE) along with PID-free approval, giving installers and investors confidence in the product's reliability for years to come. ## Notable figures - At 22.3% efficiency, this panel is on par with typical \*\*TOPCon 550-600W\*\* modules - At 222.6 W/m² power density, roof space requirements are typical for \*\*TOPCon 550-600W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 550-600W\*\* panels - At 28.6 kg, this panel is 2.6 kg lighter than \*\*TOPCon 550-600W\*\* median (31.2 kg) - easier handling during installation - Ranked #5100 out of 14005 panels for efficiency in the database ## Questions ### How does the TOPCon technology in RS8I-M-BD panels differ from standard PERC cells? The N-type TOPCon cells used in the RS8I-M-BD series feature an additional passivating layer that reduces electron recombination and increases energy conversion efficiency compared to older P-type PERC cells. This gives the panels better performance at high temperatures and under low-light conditions, resulting in higher annual energy yield, especially in climates with frequent cloudy days like Poland. ### Does bifacial technology in RS8I-M-BD panels make sense for a pitched roof installation? In a typical pitched roof installation, where the panel sits close to the roof surface, the bifacial effect is limited because the rear side has little access to reflected light. The full bifacial potential of RS8I-M-BD is better realized in ground-mount systems, carports, or elevated flat-roof mounts, where the rear side can capture light reflected off the ground. ### What is the warranty on RS8I-M-BD panels and what does it cover? Resun Solar provides a 15-year product warranty on the RS8I-M-BD series, covering material and workmanship defects, along with a 30-year linear power output warranty. This means the manufacturer guarantees a minimum production level over three decades, which is a key factor when calculating installation payback and directly affects the system's LCOE. ### How much power does a single RS8I-M-BD panel produce, and how many are needed for a 10 kWp system? Panels in the RS8I-M-BD series reach a maximum power of up to 575 Wp. At this power rating, a 10 kWp system requires roughly 17 to 18 modules, depending on the exact power variant chosen from the series and the system losses accounted for during design. ### Do RS8I-M-BD panels perform well in low winter temperatures? Yes, TOPCon cells have a favorable power temperature coefficient, meaning smaller efficiency losses in summer heat but also stable performance in cold winter conditions. Solar panels generally achieve higher efficiency in cooler air, provided the module isn't covered in snow, so on sunny winter days output can briefly exceed the nominal rating. ### Can the reinforced frame on RS8I-M-BD panels handle heavy snow loads in Poland? Yes, the RS8I-M-BD series is built with a reinforced frame that improves mechanical resistance to wind and snow loads. This makes the panels suitable for both residential rooftop installations and larger commercial projects in Polish regions with higher snow load requirements, though the final mounting structure should always be selected according to local load standards. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8I575M-BD-frame-35mm-36c1d91040a2.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +2.5 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +2.3 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | Cooler, lighter, +2.1 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | Cooler, lighter, +2.1 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | Cooler, lighter, +2.1 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | -30 W, cooler, +2.0 pp | | [AIKO AIKO-A625-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a625-mah72dw) | 625 W | +50 W, cooler, +1.9 pp | | [Resun Solar RS8I-M HC-535](https://comparepv.com/panel/resun-solar-rs8i-m-hc-535) | 535 W | -40 W, hotter, -1.6 pp | | [Resun Solar RS8I-540M-BD](https://comparepv.com/panel/resun-solar-rs8i-540m-bd) | 540 W | -35 W, hotter, -1.4 pp | | [Resun Solar RS8I-M HC-540](https://comparepv.com/panel/resun-solar-rs8i-m-hc-540) | 540 W | -35 W, hotter, -1.4 pp | | [Resun Solar RS8I-545M-BD](https://comparepv.com/panel/resun-solar-rs8i-545m-bd) | 545 W | -30 W, hotter, -1.2 pp | | [Resun Solar RS8I-M HC-545](https://comparepv.com/panel/resun-solar-rs8i-m-hc-545) | 545 W | -30 W, hotter, -1.2 pp | | [Resun Solar RS8I-M FULL BLACK 550W](https://comparepv.com/panel/resun-solar-rs8i-m-full-black-550w) | 550 W | -25 W, hotter, -1.0 pp | | [Resun Solar RS8I-M HC-555](https://comparepv.com/panel/resun-solar-rs8i-m-hc-555) | 555 W | -20 W, hotter, -0.8 pp | | [Resun Solar RS8I-555M-F30](https://comparepv.com/panel/resun-solar-rs8i-555m-f30) | 555 W | -20 W, hotter, -0.8 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +75 W, cooler, +2.9 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8i575m-bd 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.