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Resun Solar RS8L-M-DG-625
Resun Solar Brand review

RS8L-M-DG-625

625 Wp TOPCon Bifacial 10%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 2,499 of 14,005
Compare panels Datasheet PDF
Power (Wp)
625
Typical for its class
Efficiency (%)
22.36
Weak · bottom 18%
Density (Wp/m²)
223.6
Weak · bottom 18%
Temp (%/°C)
-0.300
Weak · bottom 19%
Weight (kg)
32.9
Typical · median 32.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The RS8L-M-DG series consists of dual-glass bifacial modules designed for installations where long-term energy production stability matters most. N-type TOPCon cells arranged in a half-cell layout with multi-busbar (MBB) technology reduce internal power losses and increase resistance to micro-cracks and busbar breakage, lowering the risk of failure over the module's service life. The bifacial design with a double tempered glass structure captures reflected radiation from the ground surface, boosting energy yield without expanding the installation footprint. The panels stand out for their PID resistance, which limits power degradation over time and translates into a lower LCOE across the entire operating period. High-transmittance, anti-reflective glass ensures solid performance even in low-light conditions, such as on cloudy days or during early morning and evening hours. Robust mechanical construction, certified for wind and snow loads, along with resistance to salt mist and ammonia exposure, make the RS8L-M-DG series a strong choice for both rooftop installations and ground-mount farms in demanding climates. It is a solution for investors seeking high reliability, stable output, and a predictable return on investment for years to come.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.36% 22.80% Weak · bottom 18% 5,007
Power density 223.6 227.7 Weak · bottom 18% 4,955
Temperature coefficient -0.300 -0.290 Weak · bottom 19% 6,093
Weight per kWp 52.6 53.1 Typical 6,275
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

Utility-scale and commercial.

Not ideal for

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

Watch-outs
22.36% module efficiency

Bottom 18% of the TOPCon 600-650 W segment, against a median of 22.80%.

223.6 watts per square metre

Bottom 18% of the TOPCon 600-650 W segment, against a median of 227.7.

-0.300 %/°C temperature coefficient

Bottom 19% of the TOPCon 600-650 W segment, against a median of -0.290.

Notes from the database
  • At 22.4% efficiency, this panel is on par with typical TOPCon 600-650W modules
  • At 223.6 W/m², this panel generates 4.1 W/m² less per unit area than TOPCon 600-650W median (227.7 W/m²)
  • Temperature coefficient of -0.30%/°C matches the TOPCon 600-650W median
  • Bifaciality factor of 10% can add 0-2% extra yield with reflective mounting surface
  • #5007 for efficiency, #6093 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 625 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.36 % Weak Segment median 22.80%
Vmpp · Impp 46.61 V · 13.41 A Operating point at max power
Voc · Isc 55.80 V · 14.22 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×35 mm · 2.80 m² of roof
Weight 32.9 kg Typical Typical · median 32.7 kg
Cells 156 · TOPCon Monocrystalline
Bifaciality 10 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 19% 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 625 Wp appear here. The rest cover the whole series.

I-V Curves of PV Module I-V Curves of PV Module Whole series P-V Curves of PV Module P-V Curves of PV Module 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
-
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 RS8L-M-DG-625 625 W 22.36% -0.300 32.9 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.8 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +50 W, cooler, +2.6 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +2.6 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +45 W, lighter, +2.4 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +45 W, lighter, +2.4 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +2.4 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +45 W, cooler, +2.4 pp
RS8L-M-DG-595 595 W 21.29% -0.300 32.9 kg -30 W, -1.1 pp
RS8L-M-DG-600 600 W 21.46% -0.300 32.9 kg -25 W, -0.9 pp
RS8L-M-DG-605 605 W 21.64% -0.300 32.9 kg -20 W, -0.7 pp
RS8L-M-DG-610 610 W 21.82% -0.300 32.9 kg -15 W, -0.5 pp
RS8L-M-DG-615 615 W 22.00% -0.300 32.9 kg -10 W, -0.4 pp
RS8L-M-DG-620 620 W 22.18% -0.300 32.9 kg Very close match
RS8L-M-DG-630 630 W 22.54% -0.300 32.9 kg Very close match
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +55 W, cooler, +2.8 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +75 W, cooler, +2.6 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 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 RS8L-M-DG panels and what determines it?
The RS8L-M-DG series reaches a maximum power output of up to 630 Wp. This is achieved through N-type TOPCon half-cell technology combined with multi-busbar (MBB) design, which reduces current losses and increases conversion efficiency compared to older technologies such as PERC.
How does TOPCon technology differ from PERC in the RS8L-M-DG panels?
TOPCon (Tunnel Oxide Passivated Contact) is a newer generation of N-type cells that, compared to PERC, offers higher efficiency, lower power degradation over time, and better resistance to temperature and microcracks. As a result, RS8L-M-DG panels maintain more stable energy output throughout their lifespan, which lowers the levelized cost of energy (LCOE).
Does the bifacial design of RS8L-M-DG panels actually increase energy yield?
Yes. The bifacial construction with dual tempered glass captures light reflected off the ground surface, such as a light-colored roof, gravel, or snow, generating additional energy from the rear side of the module without increasing the installation footprint. Actual gains depend on ground albedo and mounting height but typically range from a few to over ten percent more annual energy.
What is the warranty on Resun Solar RS8L-M-DG panels?
The manufacturer provides a 15-year product warranty and a 30-year power output warranty. This means long-term protection for both mechanical integrity and guaranteed performance levels, giving investors a predictable return on investment over the panel's lifespan.
Are RS8L-M-DG panels suitable for ground-mounted farms in demanding climate conditions?
Yes, the RS8L-M-DG series features a robust mechanical structure certified for wind and snow loads, as well as resistance to salt mist and ammonia. These characteristics make the panels well-suited for both rooftop and large-scale ground-mounted installations, including coastal and agricultural regions.
Are RS8L-M-DG panels resistant to PID degradation and what does that mean in practice?
Yes, the modules have certified PID (Potential Induced Degradation) resistance, which prevents power loss caused by voltage potential differences within the array. This resistance helps the panel maintain its rated performance over time, reducing energy output decline and lowering the real cost of energy produced over the system's lifetime.
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