--- title: "Resun Solar RS9H-M TOPCON-735 735W Solar Panel - Specs & Review | ComparePV" description: "Resun Solar RS9H-M TOPCON-735 735W solar panel. Specs: 23.66% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/resun-solar-rs9h-m-topcon-735" updated: 2026-09-11 --- # Resun Solar RS9H-M TOPCON-735 Light for its output, weak in heat 420 panels in the segment TOPCon 700-750 W ## Identity - **Manufacturer:** Resun Solar - **Model:** RS9H-M TOPCON-735 - **Series:** RS9H-M TOPCON - **Rated power:** 735 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 700-750 W (420 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 735 W | 715 W | Strong - top 6% | | | 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 (kg) | 32.3 kg | 38.0 kg | Strong - top 3% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | ### 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 out for - **-0.300 %/°C temperature coefficient** - Bottom 22% of the TOPCon 700-750 W segment, against a median of -0.290. - **Best for:** Utility-scale, commercial and cold-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 735 W - **Efficiency:** 23.66 % - **Voltage at Pmax (Vmp):** 41.90 V - **Current at Pmax (Imp):** 17.55 A - **Open-circuit voltage (Voc):** 50.00 V - **Short-circuit current (Isc):** 18.64 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 30 mm - **Weight:** 32.3 kg - **Area:** 3.11 m2 - **Power density:** 236.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Annual degradation:** 0.50 % - **Output after 30 years:** 621 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 602 of 14005 | | Power density | 582 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 364 of 14005 | | Warranty | 21 of 14005 | ## About this series 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. ## Notable figures - 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 ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RS9H-M-TOPCON-720-735W-0716527c3c53.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | -35 W, cooler, +1.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | -40 W, cooler, +1.2 pp | | [AIKO AIKO-A690-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a690-mae78dw) | 690 W | -45 W, cooler, +1.0 pp | | [AIKO AIKO-A685-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a685-mae78dw) | 685 W | -50 W, cooler, +0.8 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | Cooler, heavier, +0.8 pp | | [AIKO AIKO-A785-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a785-grh78dw) | 785 W | +50 W, cooler, heavier | | [Gokin GK-4-78HGBD-780M](https://comparepv.com/panel/gokin-gk-4-78hgbd-780m) | 780 W | +45 W, cooler, heavier | | [AIKO AIKO-A780-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a780-grh78dw) | 780 W | +45 W, cooler, heavier | | [Jetion JT755SLk(B)](https://comparepv.com/panel/jetion-jt755slk-b) | 755 W | Cooler, heavier, +0.6 pp | | [Trina Solar TSM-NEG21C.20Q-755](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-755) | 755 W | Cooler, heavier, +0.6 pp | | [Resun Solar RS9H-M-660](https://comparepv.com/panel/resun-solar-rs9h-m-660) | 660 W | -75 W, hotter, -2.4 pp | | [Resun Solar RS9H-M-665](https://comparepv.com/panel/resun-solar-rs9h-m-665) | 665 W | -70 W, hotter, -2.2 pp | | [Resun Solar RS9H-M-670](https://comparepv.com/panel/resun-solar-rs9h-m-670) | 670 W | -65 W, hotter, -2.1 pp | | [Resun Solar RS9H-M-DG-675](https://comparepv.com/panel/resun-solar-rs9h-m-dg-675) | 675 W | -60 W, heavier, -1.9 pp | | [Resun Solar RS9H-M-DG-680](https://comparepv.com/panel/resun-solar-rs9h-m-dg-680) | 680 W | -55 W, heavier, -1.8 pp | | [Resun Solar RS9H-M-DG-685](https://comparepv.com/panel/resun-solar-rs9h-m-dg-685) | 685 W | -50 W, heavier, -1.6 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +70 W, heavier, +1.4 pp | --- Source: https://comparepv.com/panel/resun-solar-rs9h-m-topcon-735 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.