--- title: "Resun Solar RS7I-450M-BD 450W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS7I-450M-BD 450W solar panel. Specs: 20.70% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs7i-450m-bd" updated: 2026-09-11 --- # Resun Solar RS7I-450M-BD Middle of its segment, weak in heat 7,463 panels in the 350-550 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS7I-450M-BD - **Series:** RS7I-450~455M-BD - **Rated power:** 450 W - **Cell technology:** Monocrystalline - **Bifacial:** yes ## How it compares Compared against 350-550 W band, all technologies (7463 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 450 W | 445 W | Typical | | | Module efficiency | 20.70% | 21.48% | Typical | 10,764 | | Power density | 207.0 | 214.3 | Typical | 10,824 | | Temperature coefficient | -0.390 | -0.300 | Weak - bottom 1% | 13,579 | | Weight (kg) | 25.5 kg | 23.5 kg | Weak - bottom 21% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.70% | 21.48% | Typical | 10,764 | | Power density | 207.0 | 214.3 | Typical | 10,824 | | Temperature coefficient | -0.390 | -0.300 | Weak - bottom 1% | 13,579 | | Weight per kWp | 56.7 | 52.7 | Weak - bottom 21% | 10,792 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.390 %/°C temperature coefficient** - Bottom 1% of the 350-550 W band, against a median of -0.300. Ranked 13,579th in the whole database. - **56.7 kg per kWp** - Bottom 21% of the 350-550 W band, against a median of 52.7. - **Best for:** Residential and commercial. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 450 W - **Efficiency:** 20.70 % - **Voltage at Pmax (Vmp):** 41.50 V - **Current at Pmax (Imp):** 10.85 A - **Open-circuit voltage (Voc):** 49.30 V - **Short-circuit current (Isc):** 11.60 A - **Max system voltage:** 1500 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:** 144 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2094 mm - **Width:** 1038 mm - **Thickness:** 35 mm - **Weight:** 25.5 kg - **Area:** 2.17 m2 - **Power density:** 207.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 380 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10764 of 14005 | | Power density | 10824 of 14005 | | Temperature coefficient | 13579 of 14005 | | Weight | 10792 of 14005 | | Warranty | 21 of 14005 | ## About this series RS7I-450~455M-BD is a bifacial photovoltaic module built on monocrystalline **half-cut cells** based on 166 mm wafers, arranged in a 144-cell (6x24) configuration, which translates into high energy yield even under partial shading. Thanks to **bifacial technology**, the panel captures light reflected from the ground, generating additional energy gain from the rear side of the module - a solution that is particularly cost-effective in installations over bright or reflective surfaces, such as gravel, sand, or membrane-covered roofs. The applied **anti-reflective, hydrophobic coating** reduces dust accumulation and improves light absorption, resulting in more stable energy production during mornings, evenings, and cloudy conditions. The module's construction ensures **resistance to harsh operating conditions** - the panels perform well in coastal areas, deserts, and near bodies of water, withstanding high wind and snow loads. An additional advantage is the **positive power tolerance** of 0 to +5W, guaranteeing consistent production parameters and minimizing the risk of underestimating installation output. The RS7I-BD series is a solid choice for commercial and industrial investors seeking long-term, predictable performance and a low levelized cost of energy (LCOE) throughout the system's life cycle. ## Notable figures - Efficiency of 20.7% is 1.1pp below the \*\*database\*\* median (21.8%) - 207.0 W/m² power density is 11.1 W/m² below \*\*database\*\* median (218.1 W/m²) - requires larger installation area - Temperature coefficient of -0.39%/°C is 0.09pp worse than \*\*database\*\* median (-0.30%/°C) - higher losses in summer heat - At 25.5 kg, weight matches the \*\*database\*\* median - In the top 77% for efficiency among all N-type panels ## Questions ### Is the Resun Solar RS7I-450~455M-BD series still available for purchase? The RS7I-450~455M-BD series has been discontinued by Resun Solar. Panels may still be available through distributor stock as clearance offers, but the manufacturer is no longer producing new batches of this model. Buyers should check current stock availability with local distributors and consider Resun Solar's current lineup for direct replacements. ### What is the maximum power output of the RS7I-BD series panels and what does it depend on? Panels in the RS7I-450~455M-BD series reach a maximum power of up to 455 Wp. The exact value within this range depends on the module's binning class and STC test conditions. Thanks to a positive power tolerance of 0 to +5W, the actual output of a purchased panel never falls below its rated nominal value, simplifying precise system sizing. ### What is the warranty on RS7I-450~455M-BD panels? The manufacturer provides a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means that after 30 years of operation, the panel should still deliver the manufacturer's guaranteed percentage of its initial power, making this series attractive for long-term return-on-investment projects. ### What does bifacial technology offer in RS7I-BD panels and where does it perform best? Bifacial technology allows the module to capture sunlight reflected off the ground surface with its rear side, generating additional energy yield without increasing the installation's footprint. This solution performs best on light-colored or reflective surfaces, such as gravel, sand, white roofing membranes, or near bodies of water, where light reflection is greatest. ### Are RS7I-450~455M-BD panels suitable for harsh climate installations, such as coastal areas? Yes, the RS7I-BD series is engineered for resilience in demanding operating conditions, including coastal, desert, and high-humidity environments. The panels offer strong resistance to wind and snow loads, and the anti-reflective, hydrophobic coating further reduces dust and dirt buildup, contributing to stable performance in harsh environments. ### How do the half-cut cells in this series differ from standard full-size cells? The half-cut cells used in the RS7I-BD series are monocrystalline cells cut in half from 166 mm wafers, arranged in a 144-cell (6x24) configuration. This design reduces resistive losses and improves the panel's tolerance to partial shading, since shading on one half of a cell has a smaller impact on overall module output compared to conventional full-size cells. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS7I450-455M-BD-d5740cd152f3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +45 W, cooler, +4.1 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +50 W, cooler, +3.8 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +50 W, cooler, +3.8 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +50 W, cooler, +3.8 pp | | [GCL GCL-NR10R/54BGDF](https://comparepv.com/panel/gcl-gcl-nr10r-54bgdf) | 500 W | +50 W, cooler, +3.8 pp | | [Resun Solar RS7I-425M](https://comparepv.com/panel/resun-solar-rs7i-425m) | 425 W | -25 W, cooler, -1.5 pp | | [Resun Solar RS7I-430M](https://comparepv.com/panel/resun-solar-rs7i-430m) | 430 W | -20 W, cooler, -1.2 pp | | [Resun Solar RS7I-435M](https://comparepv.com/panel/resun-solar-rs7i-435m) | 435 W | -15 W, cooler, -1.0 pp | | [Resun Solar RS7I-440M](https://comparepv.com/panel/resun-solar-rs7i-440m) | 440 W | -10 W, cooler, -0.8 pp | | [Resun Solar RS7I-445M](https://comparepv.com/panel/resun-solar-rs7i-445m) | 445 W | Cooler, -0.6 pp | | [Resun Solar RS7I-455M](https://comparepv.com/panel/resun-solar-rs7i-455m) | 455 W | Cooler, +0.2 pp | | [Resun Solar RS7I-460M](https://comparepv.com/panel/resun-solar-rs7i-460m) | 460 W | +10 W, cooler, +0.5 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +140 W, cooler, +3.1 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +135 W, cooler, +2.9 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +130 W, cooler, +2.8 pp | --- Source: https://comparepv.com/panel/resun-solar-rs7i-450m-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.