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Resun Solar Brand review

RS8H-M-BD

535 Wp TOPCon Bifacial 2500%
ComparePV verdict

Light for its output, weak in heat

Rank 5,216 of 14,005
Compare panels Datasheet PDF
Power (Wp)
535
Strong · top 10%
Efficiency (%)
22.53
Typical · median 22.73%
Density (Wp/m²)
225.3
Typical · median 227.4
Temp (%/°C)
-0.300
Weak · bottom 20%
Weight (kg)
25.0
Strong · 2.0 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The RS8H-M-BD series combines N-type TOPCon cell technology with a half-cut design, creating a module well suited for both residential rooftops and large-scale commercial installations. Thanks to N-type TOPCon technology, the panel delivers lower internal power losses and more stable performance at higher temperatures, translating into higher real-world energy yield rather than just improved lab-test numbers. The use of half-cut cells with multi-busbar technology reduces the risk of failures caused by microcracks and broken busbars, while also increasing resistance to hot-spot effects triggered by partial shading - a common issue in installations near trees, chimneys, or neighboring buildings. As a bifacial module, the RS8H-M-BD captures light reflected from the ground, boosting energy output without increasing the installation footprint - an attractive advantage for investors seeking a higher return per square meter of roof or land. The panel also stands out for its high PID resistance, limiting power degradation over time and lowering the installation's LCOE over its lifetime. Additionally, its reinforced mechanical structure allows it to withstand harsh climate conditions - strong winds, heavy snow loads, and environments with elevated salt and ammonia exposure - making the series a solid choice for coastal and agricultural installations.

Ranking

432 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall 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 46.7 52.4 Strong · top 18% 1,319
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 1 caution
Best for

Commercial and utility-scale.

Not ideal for

Hot climates.

Strengths
46.7 kg per kWp

Top 18% of the TOPCon 500-550 W segment, against a median of 52.4.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 20% of the TOPCon 500-550 W segment, against a median of -0.290.

Notes from the database
  • At 22.5% efficiency, this panel is on par with typical TOPCon 500-550W modules
  • Power density of 225.3 W/m² matches the TOPCon 500-550W median
  • Temperature coefficient of -0.30%/°C matches the TOPCon 500-550W median
  • At 25.0 kg, this panel is 2.0 kg lighter than TOPCon 500-550W median (27.0 kg) - easier handling during installation
  • In the top 28% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 535 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.53 % Typical Segment median 22.73%
Vmpp · Impp 39.58 V · 13.52 A Operating point at max power
Voc · Isc 46.50 V · 14.42 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2094×1134×30 mm · 2.37 m² of roof
Weight 25.0 kg Strong Strong · 2.0 kg below median
Cells 132 · TOPCon Monocrystalline
Bifaciality 2500 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 20% of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 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
-
With bifacial gain
-

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

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All Resun Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Resun Solar RS8H-M-BD 535 W 22.53% -0.300 25.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg -25 W, cooler, +2.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg -40 W, lighter, +2.3 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +25 W, cooler, +2.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg -30 W, cooler, +2.2 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +20 W, cooler, +2.1 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg -45 W, lighter, +2.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg -35 W, cooler, +2.0 pp
RS8H-M-480 480 W 20.21% -0.350 26.3 kg -55 W, hotter, -2.3 pp
RS8H-M-485 485 W 20.42% -0.350 26.3 kg -50 W, hotter, -2.1 pp
RS8H-M-490 490 W 20.64% -0.350 26.3 kg -45 W, hotter, -1.9 pp
RS8H-M-495 495 W 20.85% -0.350 26.3 kg -40 W, hotter, -1.7 pp
RS8H-M-500 500 W 21.06% -0.350 26.3 kg -35 W, hotter, -1.5 pp
RS8H-M-505 505 W 21.27% -0.350 26.3 kg -30 W, hotter, -1.3 pp
RS8H-M-510 510 W 21.48% -0.350 26.3 kg -25 W, hotter, -1.1 pp
RS8H-M-515 515 W 21.69% -0.350 26.3 kg -20 W, hotter, -0.8 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +55 W, heavier, +1.3 pp

Found 397 panels of the same or similar size to this one, within ±10 mm. See them here Found 408 panels of the same or similar size to this one, within ±25 mm. See them here Found 425 panels of the same or similar size to this one, within ±50 mm. See them here Found 953 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How much power does the RS8H-M-BD panel actually deliver and what affects its energy yield?
The RS8H-M-BD series reaches up to 535 Wp of maximum power. Thanks to N-type TOPCon technology, the module has lower internal power losses and performs better at high temperatures than conventional PERC panels, resulting in higher real-world energy yield, especially during summer when panels heat up on the roof.
How does the bifacial RS8H-M-BD panel differ from a standard monofacial panel?
The bifacial RS8H-M-BD panel generates energy from both sides of the module, capturing light reflected from the ground, roof, or light-colored surfaces. This increases energy output from the same installation area without additional mounting costs. The effect is especially noticeable on light gravel, a white roof, or snow during winter.
What warranty comes with the RS8H-M-BD panels?
Manufacturer Resun Solar provides a 15-year product warranty and a 30-year linear power warranty. This covers both manufacturing defects and guarantees a minimum energy output level over the long term, directly affecting the profitability of the investment.
Are RS8H-M-BD panels suitable for coastal installations or agricultural farms?
Yes, the RS8H-M-BD series features a reinforced mechanical frame resistant to strong wind and heavy snow loads, along with increased resistance to environments with elevated salinity and ammonia concentration. This makes the panel well suited for coastal installations as well as roofs on livestock buildings or areas near crop farming.
Does the half-cut and multi-busbar technology in the RS8H-M-BD panel reduce the risk of failure under partial shading?
Yes, half-cut cells with multi-busbar technology reduce the risk of microcracks and busbar breakage, while also increasing resistance to hot-spot effects caused by partial shading, for example from a chimney, tree, or neighboring building. This helps the installation perform more stably even when part of the module is not fully sunlit.
What does PID resistance mean in RS8H-M-BD panels and why does it matter?
PID resistance (Potential Induced Degradation) means the panel loses less power due to electrochemical effects caused by voltage within the installation. High PID resistance in the RS8H-M-BD series limits power degradation over time, lowering the levelized cost of energy (LCOE) throughout the system's long-term operation.
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