--- title: "Resun Solar RS8I-M HC-540 540W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS8I-M HC-540 540W solar panel. Specs: 20.89% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs8i-m-hc-540" updated: 2026-09-11 --- # Resun Solar RS8I-M HC-540 Middle of its segment, modest efficiency 8,019 panels in the 440-640 W band, all technologies ## Identity - **Manufacturer:** Resun Solar - **Model:** RS8I-M HC-540 - **Series:** RS8I-M HC - **Rated power:** 540 W - **Cell technology:** Monocrystalline ## How it compares Compared against 440-640 W band, all technologies (8019 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 540 W | 535 W | Typical | | | Module efficiency | 20.89% | 22.27% | Weak - bottom 14% | 10,294 | | Power density | 208.9 | 222.6 | Weak - bottom 15% | 10,202 | | Temperature coefficient | -0.340 | -0.300 | Weak - bottom 24% | 8,778 | | Weight (kg) | 28.6 kg | 27.5 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.89% | 22.27% | Weak - bottom 14% | 10,294 | | Power density | 208.9 | 222.6 | Weak - bottom 15% | 10,202 | | Temperature coefficient | -0.340 | -0.300 | Weak - bottom 24% | 8,778 | | Weight per kWp | 53.0 | 52.7 | Typical | 6,682 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **20.89% module efficiency** - Bottom 14% of the 440-640 W band, against a median of 22.27%. - **208.9 watts per square metre** - Bottom 15% of the 440-640 W band, against a median of 222.6. - **-0.340 %/°C temperature coefficient** - Bottom 24% of the 440-640 W band, against a median of -0.300. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 540 W - **Efficiency:** 20.89 % - **Voltage at Pmax (Vmp):** 41.64 V - **Current at Pmax (Imp):** 12.97 A - **Open-circuit voltage (Voc):** 49.60 V - **Short-circuit current (Isc):** 13.86 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/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 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.6 kg - **Area:** 2.58 m2 - **Power density:** 208.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 456 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10294 of 14005 | | Power density | 10202 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 6682 of 14005 | | Warranty | 21 of 14005 | ## About this series The RS8I-M HC series consists of monocrystalline photovoltaic modules built on large 182 mm silicon wafers using **half-cut** cell technology, combined with **PERC** passivation and a multi-busbar layout. This combination reduces resistive losses, improves the fill factor, and results in higher module efficiency while keeping a compact footprint - a strong fit for installations where every square meter of roof space matters. Available in **Full Black** and silver-frame versions, the panels address both the aesthetic expectations of residential projects and the cost-efficiency demands of commercial installations. The construction has been tested for resilience under demanding conditions, including high wind loads, heavy snow loads, and exposure to coastal, desert, and humid lakeside environments. Thanks to half-cut cell design, the risk of power loss from partial shading is significantly reduced, translating into more stable energy output under real-world operating conditions. The modules carry TÜV, IEC61215, and IEC61730 certifications, along with confirmed PID-free performance, making them a dependable choice for installers and investors who expect a long-term, trouble-free operation of their solar array. ## Notable figures - Module efficiency of 20.9% is 0.9pp below average for \*\*database\*\* panels (median: 21.8%) - At 208.9 W/m², this panel generates 9.2 W/m² less per unit area than \*\*database\*\* median (218.1 W/m²) - At -0.34%/°C, loses 0.04pp more power per degree than \*\*database\*\* median (-0.30%/°C) - Weight of 28.6 kg is 2.1 kg above \*\*database\*\* median (26.5 kg) - verify structural support - Ranked #10294 out of 14005 panels for efficiency in the database ## Questions ### What is the maximum power output of Resun Solar RS8I-M HC panels? The most powerful variants of the RS8I-M HC series reach up to 560 Wp. This output is achieved thanks to large 182 mm monocrystalline half-cut cells combined with PERC coating and a multi-busbar layout, delivering high efficiency in a relatively compact module footprint. ### What warranty comes with RS8I-M HC panels? Resun Solar backs the RS8I-M HC series with a 12-year product warranty and a 30-year linear power output warranty. This means the manufacturer guarantees a defined energy yield level over three decades of operation, an important factor when calculating return on investment for a solar installation. ### How does half-cut technology in the RS8I-M HC differ from standard panels? Half-cut technology splits cells in two, reducing resistive losses and improving the module's fill factor. In practice this means higher module efficiency and lower sensitivity to partial shading - if part of the panel is shaded, for example by a chimney or leaves, the resulting power drop is significantly smaller than in conventional full-cell modules. ### Are RS8I-M HC panels suitable for installations in harsh climate conditions? Yes, the RS8I-M HC series has been tested for resistance to strong wind loads, snow loads, and aggressive environments including coastal, desert, and humid areas near bodies of water. The panels hold IEC61215 and IEC61730 certifications, confirming compliance with international mechanical durability and safety standards. ### Are RS8I-M HC panels PID-resistant and suitable for large commercial installations? The panels carry confirmed resistance to potential-induced degradation (PID-free), which is critical for large installations with high system voltage across module strings. Availability in silver-frame and Full Black versions lets buyers match the aesthetic to both cost-driven commercial projects and residential installations. ### Is the RS8I-M HC series a bifacial module? No, the RS8I-M HC is a monofacial panel, not bifacial. It generates energy only from the front side, making it simpler to install on standard roof mounting structures without requiring the special elevated mounting needed to expose the rear side of a bifacial panel to reflected light. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS8I-M-MONO-535-560W-min-a8c2d90aa2d2.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +3.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.6 pp | | [Resun Solar RS8I-M HC-535](https://comparepv.com/panel/resun-solar-rs8i-m-hc-535) | 535 W | Very close match | | [Resun Solar RS8I-540M-BD](https://comparepv.com/panel/resun-solar-rs8i-540m-bd) | 540 W | Hotter | | [Resun Solar RS8I-545M-BD](https://comparepv.com/panel/resun-solar-rs8i-545m-bd) | 545 W | Hotter, +0.2 pp | | [Resun Solar RS8I-M HC-545](https://comparepv.com/panel/resun-solar-rs8i-m-hc-545) | 545 W | Very close match | | [Resun Solar RS8I-M FULL BLACK 550W](https://comparepv.com/panel/resun-solar-rs8i-m-full-black-550w) | 550 W | +10 W, hotter, +0.4 pp | | [Resun Solar RS8I-M HC-555](https://comparepv.com/panel/resun-solar-rs8i-m-hc-555) | 555 W | +15 W, +0.6 pp | | [Resun Solar RS8I-555M-F30](https://comparepv.com/panel/resun-solar-rs8i-555m-f30) | 555 W | +15 W, hotter, +0.6 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +110 W, cooler, +4.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +105 W, cooler, +4.1 pp | --- Source: https://comparepv.com/panel/resun-solar-rs8i-m-hc-540 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.