--- title: "Renew Photovoltaics RPS3MH66BDXXX 640W Solar Panel - Specs & Review | ComparePV" description: "Renew Photovoltaics RPS3MH66BDXXX 640W solar panel. Specs: 23.69% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/renew-photovoltaics-rps3mh66bdxxx" updated: 2026-09-11 --- # Renew Photovoltaics RPS3MH66BDXXX Space saver, no clear weak spot 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Renew Photovoltaics - **Model:** RPS3MH66BDXXX - **Series:** G12R TOPCon Bifacial Module - **Rated power:** 640 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1086 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 640 W | 620 W | Strong - top 9% | | | Module efficiency | 23.69% | 22.80% | Strong - top 5% | 580 | | Power density | 236.9 | 227.7 | Strong - top 4% | 521 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 33.5 kg | 32.7 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.69% | 22.80% | Strong - top 5% | 580 | | Power density | 236.9 | 227.7 | Strong - top 4% | 521 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 52.3 | 53.1 | Typical | 5,829 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **236.9 watts per square metre** - Top 4% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 521st in the whole database. - **23.69% module efficiency** - Top 5% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 580th in the whole database. - **Best for:** Utility-scale and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 640 W - **Efficiency:** 23.69 % - **Voltage at Pmax (Vmp):** 41.70 V - **Current at Pmax (Imp):** 15.36 A - **Open-circuit voltage (Voc):** 49.60 V - **Short-circuit current (Isc):** 16.27 A ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.060 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 33.5 kg - **Area:** 2.70 m2 - **Power density:** 236.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 559 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 580 of 14005 | | Power density | 521 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 5829 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Highest efficiency in the peer group** - At 23.69% efficiency, this module outperforms direct 640 Wp competitors — Luxen LUXPOWER N5 (23.14%), Hanersun Hitouch 6N (23.30%), and REC Alpha Pro M Series (22.50%) — delivering higher energy yield per unit of roof or ground area. - **N-type TOPCon with half-cut cells** - 132 half-cut cells arranged with 16 busbars reduce shading losses and lower the risk of micro-cracks. The manufacturer states ~1% first-year degradation plus LID and PID resistance, consistent with well-engineered N-type modules. - **Dual-sided bifacial design** - The bifacial construction captures light reflected from the ground surface, potentially boosting total energy yield by several tens of percent over monofacial panels — a meaningful advantage on high-albedo ground cover or utility-scale PV farms. - **High mechanical load resistance** - The module is rated for substantial wind and snow loads (manufacturer figures of approximately 2400 Pa and 5400 Pa respectively), making it well suited for industrial rooftops and sites with variable, demanding climates. - **30-year linear power warranty** - A 30-year power warranty places the series at the premium tier of the segment, on par with leading TOPCon manufacturers, giving investors a predictable degradation profile over the system's lifetime. ## Cons - **Shorter product warranty than the segment leader** - The 12-year product warranty is notably shorter than REC Alpha Pro M Series, which offers up to 25 years on product warranty at a comparable 640 Wp power class. This may affect the module's perceived bankability in long-term financed commercial projects. - **Limited market track record** - Renew Photovoltaics (founded in 2011, India) lacks the long, globally established market history of players like REC in the TOPCon segment. The G12R series only launched in 2025, so long-term field data confirming the claimed durability is still limited. ## About this series The G12R TOPCon Bifacial Module is an industrial-grade panel series engineered for installations exposed to demanding weather conditions and for investors who expect stable energy yields over decades. At its core lies **N-type TOPCon technology** combined with **half-cut cells** arranged in a 132-cell layout, which reduces power losses under partial shading and extends the module's service life. The use of **16 busbars** minimizes the risk of micro-cracks and improves current collection across the cell surface, while the two-sided, **bifacial design** captures light reflected from the ground, boosting overall energy yield by up to several tens of percent compared to monofacial panels. The panels have been tested for resistance to high snow and wind loads, making them a suitable choice for industrial rooftops, solar farms, and sites located in regions with variable climates. A low temperature coefficient ensures stable performance during hot days, while very low first-year power degradation and excellent PID resistance translate into a predictable return on investment. Backed by a long-term product and power warranty, this series offers a reliable solution for both commercial and industrial installations with demanding reliability requirements. ## Notable figures - At 23.7% efficiency, this panel is 0.9pp above typical \*\*TOPCon 600-650W\*\* modules (median: 22.8%) - 236.9 W/m² power density - 9.2 W/m² more than \*\*TOPCon 600-650W\*\* median (227.7 W/m²), more power per roof area - At -0.29%/°C, hot weather performance is typical for \*\*TOPCon 600-650W\*\* panels - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - #580 for efficiency, #2165 for temperature performance out of 14005 panels ## Questions ### What is the maximum power output of the G12R TOPCon Bifacial Module? The panel reaches a maximum power of up to 640 Wp, placing it among high-power industrial-grade modules. This power rating reduces the number of modules needed to reach a target installation capacity, lowering costs for mounting structures, cabling, and labor in commercial and utility-scale PV installations. ### How does TOPCon technology differ from standard PERC panels? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology offering higher efficiency and lower annual degradation than common P-type PERC panels. The additional passivation layer allows TOPCon cells to capture light more effectively and lose less power over time, resulting in higher energy yield across the system's lifetime. ### What benefit does the bifacial design of the G12R module provide and how much extra yield can it deliver? The double-sided, bifacial construction allows the module to capture additional light reflected from the ground, roof, or surrounding surfaces. Depending on albedo, mounting angle, and height above ground, this can add anywhere from a few percent up to several tens of percent more energy yield compared to conventional monofacial panels, especially on bright, reflective surfaces. ### What warranty comes with the G12R TOPCon Bifacial Module series? The manufacturer provides a 12-year product warranty along with a 30-year linear power warranty. This means the module should retain a high percentage of its rated output even after three decades of operation, giving investors a predictable return on investment for commercial and industrial installations. ### Are G12R TOPCon panels suitable for industrial roofs exposed to heavy wind and snow loads? Yes, the series has been tested for resistance to high snow and wind loads, making it suitable for industrial roofs, ground-mount PV farms, and locations with variable climate conditions. The 16-busbar design further reduces the risk of microcracks under heavy mechanical stress and temperature fluctuations. ### Are G12R TOPCon panels resistant to PID and high-temperature performance loss? Yes, the module features PID resistance and a low temperature coefficient of power, ensuring stable performance even in hot climates. Combined with very low first-year power degradation, this results in high, predictable energy output throughout the entire lifespan of the installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Renew_Datasheet-G12R_TOPCon_003_Jan26-70f90da509fe.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +1.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +40 W, lighter, +1.5 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +35 W, lighter, +1.3 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +1.3 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +30 W, lighter, +1.1 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +30 W, lighter, +1.1 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +60 W, cooler, +1.3 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +55 W, cooler, +1.2 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +30 W, cooler, +1.1 pp | --- Source: https://comparepv.com/panel/renew-photovoltaics-rps3mh66bdxxx Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.