--- title: "RedSolar M10R-620TR 620W Solar Panel - Specs & Review | ComparePV" description: "RedSolar M10R-620TR 620W solar panel. Specs: 22.95% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/redsolar-m10r-620tr" updated: 2026-09-11 --- # RedSolar M10R-620TR Middle of its segment, weak in heat 1,086 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** RedSolar - **Model:** M10R-620TR - **Series:** M10R-TR - **Rated power:** 620 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) | 620 W | 620 W | Typical | | | Module efficiency | 22.95% | 22.80% | Typical | 2,268 | | Power density | 229.5 | 227.7 | Typical | 2,191 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 19% | 6,093 | | Weight (kg) | 32.5 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 | 22.95% | 22.80% | Typical | 2,268 | | Power density | 229.5 | 227.7 | Typical | 2,191 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 19% | 6,093 | | Weight per kWp | 52.4 | 53.1 | Typical | 5,893 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 19% of the TOPCon 600-650 W segment, against a median of -0.290. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 620 W - **Efficiency:** 22.95 % - **Voltage at Pmax (Vmp):** 40.05 V - **Current at Pmax (Imp):** 15.48 A - **Open-circuit voltage (Voc):** 47.85 V - **Short-circuit current (Isc):** 16.32 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:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2382 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 32.5 kg - **Area:** 2.70 m2 - **Power density:** 229.5 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:** 542 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 2268 of 14005 | | Power density | 2191 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 5893 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon technology with MBB cells** - 132 half-cut cells in a multi-busbar layout reduce resistive losses and improve partial-shading tolerance, translating into higher and more stable energy yield compared to older PERC technology. - **30-year linear power warranty** - The manufacturer offers a 30-year linear power warranty with low annual degradation and resistance to LID and PID - a term comparable to leading peer comparables such as HT-SAAE HT66-18X(ND)-F and Weran LR7-72HTH. - **Bifacial design boosting energy yield** - The double-sided module construction captures reflected light from the ground, potentially increasing total energy yield by double-digit percentages versus classic monofacial panels - a significant advantage for PV farms and installations over bright, reflective surfaces. - **High efficiency at premium-segment level** - Efficiency of up to 22.95% at power up to 620 Wp places the series near the top of its peer comparables (HT-SAAE 23%, MY Solar 22.95%, Weran Solar 23%), making it competitive within the high-power TOPCon module segment. - **Experienced manufacturer with in-house production line** - Hunan RedSolar has operated since 2008 and was the first in China to launch a fully localized, intelligent PV cell production line, with over 30 GW of products delivered - evidence of a mature manufacturing process. ## Cons - **Model discontinued from production** - According to independent sources (ENF Solar), the M10R-MBB CETC-600-620TR model is no longer commercially manufactured by Hunan RedSolar, which may limit availability of warranty service, replacement parts, and the ability to source identical modules for system expansion. - **Efficiency slightly below segment leaders** - Maximum efficiency of 22.95% is marginally lower than the best comparable models - HT-SAAE HT66-18X(ND)-F and Weran LR7-72HTH achieve 23% at the same 620 Wp maximum power - a small but real gap that matters in large-scale installations totaling hundreds of kW. ## About this series The M10R-TR series comprises monocrystalline modules built on **N-type TOPCon technology**, engineered for installations that need to maximize energy yield on limited roof or ground area. The use of 132 **half-cut cells in an MBB (multi-busbar) layout** reduces resistive losses and improves the module's tolerance to partial shading, resulting in more stable performance under real-world operating conditions. The bifacial design captures light reflected off the ground surface, boosting total energy harvest by as much as several percent compared to conventional monofacial panels - making this an especially attractive option for utility-scale PV farms and installations on bright, reflective surfaces. The rectangular cell design lowers open-circuit voltage while maintaining high current output, which cuts BoS costs and simplifies inverter matching. The manufacturer backs the series with a **30-year linear power warranty**, low annual degradation, and resistance to LID and PID effects, while the module's appearance (available with a black frame) can be customized to meet the aesthetic requirements of the investor. The M10R-TR series is well suited to both commercial projects and larger prosumer installations where long-term reliability and strong return on investment are priorities. ## Notable figures - At 22.9% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - At 229.5 W/m² power density, roof space requirements are typical for \*\*TOPCon 600-650W\*\* panels - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 600-650W\*\* median - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - In the top 16% for efficiency among all TOPCon panels ## Questions ### How does TOPCon technology in RedSolar M10R-TR panels differ from classic PERC cells? TOPCon (Tunnel Oxide Passivated Contact) uses an additional N-type passivation layer that reduces carrier recombination at the cell surface. This gives M10R-TR modules higher efficiency and better power stability over time compared to traditional P-type PERC cells. In practice, this means higher energy yield from the same roof area and slower degradation over years of operation. ### How much extra energy do you actually get from the bifacial design of the M10R-TR panel? The extra rear-side yield depends on ground albedo and mounting configuration, but for typical ground-mounted installations on light-colored soil or gravel it usually adds several to over a dozen percent more energy than a monofacial module. The greatest gains come from elevated mounting structures with good light circulation beneath the panel, such as PV farms or solar carports. ### What warranty does RedSolar offer on M10R-TR panels and what does it cover? The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing limited annual output degradation. The panels are also resistant to LID and PID degradation, reducing the risk of sudden power drops in the early years of operation and under the high system voltages found in large installations. ### Does the 620 Wp M10R-TR panel require a special inverter? No dedicated inverter is required, but given the high unit power, it's worth choosing an inverter with an appropriate MPPT current range and string count matched to the panel's open-circuit voltage. The rectangular cell shape used in the M10R-TR lowers Voc while keeping current high, which simplifies inverter selection and helps reduce BoS costs compared to modules with standard cell geometry. ### Is the M10R-TR series suited for large solar farms or is it better for residential rooftops? Thanks to its high unit power of 620 Wp and bifacial technology, the M10R-TR series is best suited for commercial projects and larger prosumer installations where maximizing yield from limited space matters. It also performs well in ground-mounted PV farms, where the bifacial effect delivers real benefits, though it works equally well on large commercial rooftops. ### Do the half-cut cells in the M10R-TR panels handle partial shading better? Yes, the 132 half-cut cells arranged in a multi-busbar (MBB) layout divide the panel into smaller electrical segments, so shading part of the module, for example from leaves or a chimney, causes a smaller overall power drop than in designs with full-size cells. This also lowers the risk of hotspots in shaded areas and extends the module's operating lifespan. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1724139010868dakd9-5d50d6b09ee9.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.2 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +50 W, lighter, +1.9 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +50 W, lighter, +1.9 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +1.9 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +50 W, cooler, +1.9 pp | | [RedSolar CETC-600TR(GDF)/132](https://comparepv.com/panel/redsolar-cetc-600tr-gdf-132) | 600 W | -20 W, cooler, -0.8 pp | | [RedSolar CETC-605TR(GDF)/132](https://comparepv.com/panel/redsolar-cetc-605tr-gdf-132) | 605 W | -15 W, cooler, -0.6 pp | | [RedSolar CETC-610TR(GDF)/132](https://comparepv.com/panel/redsolar-cetc-610tr-gdf-132) | 610 W | -10 W, cooler, -0.3 pp | | [RedSolar CETC-615TR(GDF)/132](https://comparepv.com/panel/redsolar-cetc-615tr-gdf-132) | 615 W | Cooler | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +60 W, cooler, +2.2 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +55 W, cooler, +2.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +80 W, cooler, +2.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +75 W, cooler, +1.9 pp | --- Source: https://comparepv.com/panel/redsolar-m10r-620tr 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.