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Resun Solar RS8I-M HC-540
Resun Solar Brand review

RS8I-M HC-540

540 Wp Monocrystalline
ComparePV verdict

Middle of its segment, modest efficiency

Rank 7,813 of 14,005
Compare panels Datasheet PDF
Power (Wp)
540
Typical for its class
Efficiency (%)
20.89
Weak · bottom 14%
Density (Wp/m²)
208.9
Weak · bottom 15%
Temp (%/°C)
-0.340
Weak · bottom 24%
Weight (kg)
28.6
Typical · median 27.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

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.

Ranking

8,019 panels in the 440-640 W band, all technologies
Metric This panel Median Position in segment Overall 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
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Tight roof space, roofs where every square metre has to count and hot climates.

Watch-outs
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.

Notes from the database
  • 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

Specifications

Open datasheet PDF
Nominal power (Pmax) 540 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.89 % Weak Segment median 22.27%
Vmpp · Impp 41.64 V · 12.97 A Operating point at max power
Voc · Isc 49.60 V · 13.86 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2279×1134×35 mm · 2.58 m² of roof
Weight 28.6 kg Typical Typical · median 27.5 kg
Cells 144 Monocrystalline
Coefficient Pmax -0.340 %/°C Weak bottom 24% of its segment
Coefficient Voc · Isc -0.320 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
Degradation 0.50 % Per year after the first

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.340 %/°C against a segment median of -0.300
-

Alternatives

All Resun Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Resun Solar RS8I-M HC-540 540 W 20.89% -0.340 28.6 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +4.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.9 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +3.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +3.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +3.6 pp
RS8I-M HC-535 535 W 20.70% -0.340 28.6 kg Very close match
RS8I-540M-BD 540 W 20.94% -0.390 29.0 kg Hotter
RS8I-545M-BD 545 W 21.13% -0.390 29.0 kg Hotter, +0.2 pp
RS8I-M HC-545 545 W 21.09% -0.340 28.6 kg Very close match
RS8I-M FULL BLACK 550W 550 W 21.28% -0.390 28.6 kg +10 W, hotter, +0.4 pp
RS8I-M HC-555 555 W 21.47% -0.340 28.6 kg +15 W, +0.6 pp
RS8I-555M-F30 555 W 21.50% -0.390 27.2 kg +15 W, hotter, +0.6 pp
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +110 W, cooler, +4.3 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +105 W, cooler, +4.1 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2542 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
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.
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