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Resun Solar RS9H-M-DG-680
Resun Solar Brand review

RS9H-M-DG-680

680 Wp TOPCon Bifacial
ComparePV verdict

Middle of its segment, heavy for its output

Rank 1,598 of 14,005
Compare panels Datasheet PDF
Power (Wp)
680
Typical for its class
Efficiency (%)
21.89
Weak · bottom 19%
Density (Wp/m²)
218.9
Weak · bottom 19%
Temp (%/°C)
-0.300
Typical · median -0.290
Weight (kg)
38.5
Weak · 3.9 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The RS9H-M-DG series is a bifacial dual-glass photovoltaic module designed for projects where every extra kilowatt-hour of yield matters. The panel is built on N-type TOPCon cells with multi-busbar (MBB) technology, which reduces internal power loss and boosts conversion efficiency compared to conventional PERC designs. The half-cell construction further lowers the risk of failures caused by microcracks and busbar breakage, while effectively mitigating hot-spot issues triggered by partial shading. Thanks to its bifacial dual-glass design, the module captures irradiance from both sides, delivering higher energy yield, especially in ground-mount installations over reflective surfaces. The panel also stands out for its high mechanical load resistance, certified for wind loads up to 2400 Pa and snow loads up to 5400 Pa, and it withstands salt mist and ammonia exposure, making it a solid choice for coastal and agricultural installations. Anti-PID performance combined with low annual power degradation ensures stable energy output throughout the module's service life, backed by a 30-year linear power warranty. This makes the series a strong fit for investors seeking high reliability and reduced LCOE in commercial and industrial-scale projects.

Ranking

249 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.89% 22.40% Weak · bottom 19% 6,882
Power density 218.9 223.7 Weak · bottom 19% 6,804
Temperature coefficient -0.300 -0.290 Typical 6,093
Weight per kWp 56.6 53.2 Weak · bottom 14% 10,746
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, commercial and agrivoltaic.

Not ideal for

Weight-limited structures, tight roof space and roofs where every square metre has to count.

Watch-outs
56.6 kg per kWp

Bottom 14% of the TOPCon 650-700 W segment, against a median of 53.2.

21.89% module efficiency

Bottom 19% of the TOPCon 650-700 W segment, against a median of 22.40%.

218.9 watts per square metre

Bottom 19% of the TOPCon 650-700 W segment, against a median of 223.7.

Notes from the database
  • At 21.9% efficiency, this panel is 0.5pp below the TOPCon 650-700W median of 22.4%
  • 218.9 W/m² power density is 4.8 W/m² below TOPCon 650-700W median (223.7 W/m²) - requires larger installation area
  • Temperature coefficient of -0.30%/°C matches the TOPCon 650-700W median
  • At 38.5 kg (3.9 kg above TOPCon 650-700W median of 34.6 kg), requires checking roof load capacity
  • #6882 for efficiency, #6093 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 680 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.89 % Weak Segment median 22.40%
Vmpp · Impp 39.70 V · 17.13 A Operating point at max power
Voc · Isc 47.70 V · 18.16 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×35 mm · 3.11 m² of roof
Weight 38.5 kg Weak Weak · 3.9 kg above median
Cells 132 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Typical median -0.290 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
-

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 RS9H-M-DG-680 680 W 21.89% -0.300 38.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +3.3 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +3.3 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +3.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +3.1 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +3.1 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +3.0 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +2.9 pp
RS9H-M-660 660 W 21.25% -0.350 33.6 kg Hotter, lighter, -0.6 pp
RS9H-M-665 665 W 21.41% -0.350 33.6 kg Hotter, lighter, -0.5 pp
RS9H-M-670 670 W 21.57% -0.350 33.6 kg Hotter, lighter, -0.3 pp
RS9H-M-DG-675 675 W 21.73% -0.300 38.5 kg Very close match
RS9H-M-DG-685 685 W 22.05% -0.300 38.5 kg Very close match
RS9H-M-DG-690 690 W 22.21% -0.300 38.5 kg +10 W, +0.3 pp
RS9H-M-DG-695 695 W 22.37% -0.300 38.5 kg +15 W, +0.5 pp
RS9H-M-DG 700 W 22.53% -0.300 38.5 kg +20 W, +0.6 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +125 W, cooler, +3.2 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 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 the Resun Solar RS9H-M-DG panel?
The RS9H-M-DG series reaches a maximum power of up to 720 Wp, with a conversion efficiency above 22%. This is achieved through N-type TOPCon cells with multi-busbar (MBB) technology, which reduce current losses and deliver higher power from the same module surface compared to classic PERC panels.
How does TOPCon technology in the RS9H-M-DG differ from classic PERC panels?
The N-type TOPCon cells used in the RS9H-M-DG feature an additional passivation layer that reduces electron recombination and limits internal power losses. In practice, this means higher efficiency, lower degradation over time, and better performance at high temperatures compared to standard PERC modules, resulting in a higher annual energy yield.
Does the bifacial RS9H-M-DG panel require special mounting to benefit from rear-side light capture?
To fully exploit the bifacial dual-glass design, the panel should ideally be mounted on ground-mount structures or trackers with sufficient clearance beneath the module and over a reflective surface (e.g., white gravel, snow). On a typical sloped roof the rear-side gain will be smaller, but the panel still operates normally and generates power from its front side.
What warranty comes with the RS9H-M-DG solar panels?
Resun Solar provides a 15-year product warranty and a 30-year linear power warranty, meaning a guaranteed, gradual performance decline spread across three decades. This exceeds the market standard of roughly 10-12 years product and 25 years power warranty, reflecting the low annual degradation of the TOPCon cells.
Are RS9H-M-DG panels suitable for agricultural and coastal installations?
Yes, panels in this series are certified resistant to salt mist and ammonia exposure. This makes the RS9H-M-DG well suited for agrivoltaic projects, livestock farms, and coastal installations, where standard panels tend to corrode or degrade faster due to chemical exposure.
What wind and snow loads can the RS9H-M-DG panels withstand?
The panels are certified for wind loads up to 2400 Pa and snow loads up to 5400 Pa, meeting the requirements for demanding climates, including mountainous regions with heavy snowfall. The dual tempered glass construction further increases mechanical strength compared to standard back-sheet designs.
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