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Resun Solar RS8K-M-470
Resun Solar Brand review

RS8K-M-470

470 Wp TOPCon
ComparePV verdict

Middle of its segment, modest efficiency

Rank 8,614 of 14,005
Compare panels Datasheet PDF
Power (Wp)
470
Typical for its class
Efficiency (%)
21.78
Weak · bottom 11%
Density (Wp/m²)
217.8
Weak · bottom 11%
Temp (%/°C)
-0.300
Weak · bottom 20%
Weight (kg)
23.9
Typical · median 24.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Resun Solar RS8K-M series are advanced photovoltaic modules that redefine performance standards through the use of large-format 210 mm silicon cells. The use of Half-cut and Multi-busbar (MBB) technology allows for a significant reduction in resistive losses, which directly translates into higher energy production even in conditions of low sunlight or partial shading. These panels effectively solve the problem of limited installation space by offering above-average power density, making them an excellent choice for utility-scale solar farms and large industrial facilities. What sets the RS8K-M series apart from the competition is its exceptionally low temperature coefficient and minimized light-induced degradation effect, ensuring yield stability for decades. Investors choosing this solution can count on a significantly reduced Levelized Cost of Energy (LCOE) and a faster return on investment. The robust frame construction and the use of high-transmission tempered glass ensure full safety and resistance to extreme weather conditions, such as strong winds or heavy snow loads. This is a professional response to the needs of the modern energy sector, combining innovative engineering with economic operational efficiency.

Ranking

1,089 panels in the segment TOPCon 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.78% 22.52% Weak · bottom 11% 7,206
Power density 217.8 225.2 Weak · bottom 11% 7,046
Temperature coefficient -0.300 -0.290 Weak · bottom 20% 6,093
Weight per kWp 50.9 52.2 Typical 4,244
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

Commercial, shaded-installations and hot-climate.

Not ideal for

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

Watch-outs
21.78% module efficiency

Bottom 11% of the TOPCon 450-500 W segment, against a median of 22.52%.

217.8 watts per square metre

Bottom 11% of the TOPCon 450-500 W segment, against a median of 225.2.

-0.300 %/°C temperature coefficient

Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290.

Notes from the database
  • Efficiency of 21.8% is 0.7pp below the TOPCon 450-500W median (22.5%)
  • At 217.8 W/m², this panel generates 7.4 W/m² less per unit area than TOPCon 450-500W median (225.2 W/m²)
  • At -0.30%/°C, hot weather performance is typical for TOPCon 450-500W panels
  • In the top 51% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 470 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.78 % Weak Segment median 22.52%
Vmpp · Impp 34.49 V · 13.63 A Operating point at max power
Voc · Isc 41.78 V · 14.17 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1903×1134×35 mm · 2.16 m² of roof
Weight 23.9 kg Typical Typical · median 24.0 kg
Cells 132 · TOPCon Monocrystalline
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

Datasheet charts

Open datasheet PDF

Measured curves published by Resun Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 470 Wp appear here. The rest cover the whole series.

0.5% Annual Degradation over 30 years 0.5% Annual Degradation over 30 years Whole series

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
-0.300 %/°C against a segment median of -0.290
-

Alternatives

All Resun Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Resun Solar RS8K-M-470 470 W 21.78% -0.300 23.9 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +40 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +35 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +30 W, cooler, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +30 W, cooler, +2.7 pp
RS8K-M-475W 475 W 22.01% -0.300 23.6 kg +0.2 pp
RS8K-M-480W 480 W 22.24% -0.300 23.6 kg +10 W, +0.5 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +90 W, cooler, +3.0 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +85 W, cooler, +2.8 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +80 W, lighter, +2.6 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +70 W, cooler, +2.6 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +70 W, cooler, +2.6 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +75 W, cooler, +2.5 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +75 W, cooler, +2.4 pp

Found 725 panels of the same or similar size to this one, within ±10 mm. See them here Found 751 panels of the same or similar size to this one, within ±25 mm. See them here Found 870 panels of the same or similar size to this one, within ±50 mm. See them here Found 1499 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Resun Solar RS8K-M series come with?
The RS8K-M series includes a 15-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty. Resun Solar guarantees that after 30 years of operation the module will retain at least 87.4% of its nominal power output. The TOPCon cell technology and minimized light-induced degradation (LID) effect mean real-world performance often exceeds these minimum thresholds.
Is the Resun Solar RS8K-M suitable only for utility-scale farms, or can it be installed on a residential rooftop?
The RS8K-M series, with modules rated up to 495 W and 210 mm large-format cells, is optimized for utility-scale solar farms and large industrial facilities. The physical dimensions can make rooftop transport and mounting challenging for a typical single-family home. For residential prosumer systems, smaller modules from Resun Solar's residential-focused series are generally a better fit.
What is TOPCon technology and why is it better than PERC in the RS8K-M series?
TOPCon (Tunnel Oxide Passivated Contact) is an n-type cell technology that applies an ultra-thin silicon oxide layer to the rear cell surface, dramatically reducing carrier recombination. Compared to standard p-type PERC cells, this results in higher efficiency up to 22.9%, a lower temperature coefficient (around -0.30%/°C), and slower long-term degradation across the full 30-year warranty period.
How does the RS8K-M series perform in high temperatures during summer?
Thanks to TOPCon technology, the power temperature coefficient is approximately -0.30%/°C, meaning at a module temperature of 65°C (typical on a hot summer day) the panel loses about 12.5% of its nominal power. This outperforms standard PERC cells, which typically show a coefficient of -0.35%/°C. The result is measurably higher energy yields during peak summer months, a critical advantage at the scale of utility solar farms.
Are the RS8K-M modules rated for rain, snow loads, and high wind?
Yes. The RS8K-M series features a robust aluminum alloy frame and high-transmittance tempered glass, certified to IEC 61215 and IEC 61730 standards. The modules are rated for snow loads up to 5,400 Pa and wind pressure up to 2,400 Pa, meeting the structural requirements for most Central European locations, including areas with heavy snowfall or strong seasonal winds.
How does the RS8K-M differ from bifacial modules and is the monofacial version worth choosing?
The RS8K-M is a monofacial module and does not generate power from reflected rear-side irradiance. On a ground-mounted farm with a high-albedo surface, a bifacial module can produce 5–15% additional energy. However, the RS8K-M offers a lower unit cost and simpler mounting logistics, making it the economically optimal choice for installations on dark or vegetated ground surfaces, industrial rooftops, or any site where rear-side gain would be negligible.
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