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Resun Solar RS9H-M TOPCON-735
Resun Solar Brand review

RS9H-M TOPCON-735

735 Wp TOPCon
ComparePV verdict

Light for its output, weak in heat

Rank 149 of 14,005
Compare panels Datasheet PDF
Power (Wp)
735
Strong · top 6%
Efficiency (%)
23.66
Strong · top 7%
Density (Wp/m²)
236.6
Strong · top 6%
Temp (%/°C)
-0.300
Weak · bottom 22%
Weight (kg)
32.3
Strong · 5.7 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The RS9H-M TOPCON series is built for installers and investors looking for modules that combine high efficiency with real resilience in demanding operating conditions. The panel is based on N-type TOPCon technology paired with half-cut cells and a multi-busbar grid, which reduces internal power losses and lowers the risk of damage from micro-cracks or broken busbars. Thanks to 3.2mm tempered glass with enhanced transmittance and anti-reflective properties, the series maintains stable energy output even under diffuse, low-light conditions, translating into higher yield on cloudy days or during early morning and dusk hours. The design stands out for its high mechanical strength, certified for wind and snow load, making it a solid fit both for roofs exposed to strong gusts and for regions with heavy snowfall. The panels also show strong PID resistance along with resistance to salt mist and ammonia exposure, making them a good choice for coastal and agricultural installations. The whole package is backed by a 30-year linear power warranty with low annual degradation, giving investors a predictable return and a lower LCOE over the system's lifetime.

Ranking

420 panels in the segment TOPCon 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.66% 23.00% Strong · top 7% 602
Power density 236.6 230.2 Strong · top 6% 582
Temperature coefficient -0.300 -0.290 Weak · bottom 22% 6,093
Weight per kWp 43.9 52.9 Strong · top 3% 364
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 1 caution
Best for

Utility-scale, commercial and cold-climate.

Not ideal for

Hot climates.

Strengths
43.9 kg per kWp

Top 3% of the TOPCon 700-750 W segment, against a median of 52.9. Ranked 364th in the whole database.

236.6 watts per square metre

Top 6% of the TOPCon 700-750 W segment, against a median of 230.2. Ranked 582nd in the whole database.

23.66% module efficiency

Top 7% of the TOPCon 700-750 W segment, against a median of 23.00%. Ranked 602nd in the whole database.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 22% of the TOPCon 700-750 W segment, against a median of -0.290.

Notes from the database
  • 23.7% module efficiency - 0.7pp better than the TOPCon 700-750W median of 23.0%
  • 236.6 W/m² power density - 6.4 W/m² more than TOPCon 700-750W median (230.2 W/m²), more power per roof area
  • Temperature coefficient of -0.30%/°C matches the TOPCon 700-750W median
  • Weight of 32.3 kg (5.7 kg below TOPCon 700-750W median of 38.0 kg) allows easier transport and roof mounting
  • In the top 4% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 735 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.66 % Strong Segment median 23.00%
Vmpp · Impp 41.90 V · 17.55 A Operating point at max power
Voc · Isc 50.00 V · 18.64 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×30 mm · 3.11 m² of roof
Weight 32.3 kg Strong Strong · 5.7 kg below median
Cells 132 · TOPCon Monocrystalline
Coefficient Pmax -0.300 %/°C Weak bottom 22% 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 735 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 RS9H-M TOPCON-735 735 W 23.66% -0.300 32.3 kg You are here
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg -35 W, cooler, +1.3 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg -40 W, cooler, +1.2 pp
AIKO-A690-MAE78Dw 690 W 24.70% -0.260 34.5 kg -45 W, cooler, +1.0 pp
AIKO-A685-MAE78Dw 685 W 24.50% -0.260 34.5 kg -50 W, cooler, +0.8 pp
TSM-NEG21C.20Q-760 760 W 24.50% -0.260 38.3 kg Cooler, heavier, +0.8 pp
AIKO-A785-GRH78Dw 785 W 24.40% -0.260 39.8 kg +50 W, cooler, heavier
GK-4-78HGBD-780M 780 W 24.30% -0.260 38.7 kg +45 W, cooler, heavier
AIKO-A780-GRH78Dw 780 W 24.30% -0.260 39.8 kg +45 W, cooler, heavier
JT755SLk(B) 755 W 24.30% -0.240 36.4 kg Cooler, heavier, +0.6 pp
TSM-NEG21C.20Q-755 755 W 24.30% -0.260 38.3 kg Cooler, heavier, +0.6 pp
RS9H-M-660 660 W 21.25% -0.350 33.6 kg -75 W, hotter, -2.4 pp
RS9H-M-665 665 W 21.41% -0.350 33.6 kg -70 W, hotter, -2.2 pp
RS9H-M-670 670 W 21.57% -0.350 33.6 kg -65 W, hotter, -2.1 pp
RS9H-M-DG-675 675 W 21.73% -0.300 38.5 kg -60 W, heavier, -1.9 pp
RS9H-M-DG-680 680 W 21.89% -0.300 38.5 kg -55 W, heavier, -1.8 pp
RS9H-M-DG-685 685 W 22.05% -0.300 38.5 kg -50 W, heavier, -1.6 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +70 W, heavier, +1.4 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 N-type TOPCon technology used in the RS9H-M TOPCON series, and how does it differ from classic PERC?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology with an added passivation layer that reduces carrier recombination and boosts efficiency over older P-type PERC cells. In practice this means higher output from the same module footprint, better high-temperature performance, and lower annual degradation. In the RS9H-M TOPCON, this technology is combined with half-cell design and a multi-busbar grid, further cutting current losses and improving resistance to microcracks.
What is the maximum power output of the RS9H-M TOPCON, and how much energy yield can I expect?
The top variant of the RS9H-M TOPCON series reaches a maximum power of 735 Wp. Thanks to 3.2 mm tempered glass with enhanced transmittance and anti-reflective properties, the panel maintains stable energy production even under weak, diffuse light, resulting in better yield in the early morning, evening, and on overcast days compared to older P-type designs.
Are RS9H-M TOPCON panels suitable for coastal or agricultural installations?
Yes, the RS9H-M TOPCON series is certified for resistance to salt mist and ammonia exposure, making it a suitable choice for sites near the coast and for farms where panels may be exposed to ammonia fumes from livestock. The modules are also PID-resistant, preventing power loss caused by leakage current under high humidity and high system voltage conditions.
What warranty comes with the RS9H-M TOPCON panels, and what does it cover?
Resun Solar provides a 15-year product warranty on the RS9H-M TOPCON series, covering material and workmanship defects, along with a 30-year linear power warranty featuring low annual degradation. This means the manufacturer guarantees a minimum power output level over three decades of operation, delivering a predictable return on investment and lower energy costs across the system's lifetime.
Can the RS9H-M TOPCON withstand strong wind and heavy snow loads on a roof?
Yes, the RS9H-M TOPCON series has been tested for enhanced mechanical loads and holds certifications confirming resistance to high wind and snow loads. This makes the panels suitable both for roofs in locations exposed to strong gusts and for regions with heavy winter snowfall, without risking cell microcracks or frame damage.
Are RS9H-M TOPCON panels bifacial, generating power from the rear side too?
No, the RS9H-M TOPCON series consists of monofacial modules, generating power only from the front surface. If you want extra yield from reflected light — for example, from a bright roof or ground surface — consider a bifacial series from Resun Solar instead. The RS9H-M TOPCON compensates for this with high N-type cell efficiency and strong performance under diffuse light.
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