--- title: "Risen RSM132-8-650BMDG 650W Solar Panel - Specs & Review | ComparePV" description: "Risen RSM132-8-650BMDG 650W solar panel. Specs: 20.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-650bmdg" updated: 2026-09-11 --- # Risen RSM132-8-650BMDG Middle of its segment, modest efficiency 320 panels in the segment PERC 650-700 W ## Identity - **Manufacturer:** Risen - **Model:** RSM132-8-650BMDG - **Series:** TITAN HIGH PERFORMANCE BIFACIAL PERC MONOCRYSTALLINE MODULE - **Rated power:** 650 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 650-700 W (320 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 650 W | 660 W | Weak - bottom 7% | | | Module efficiency | 20.90% | 21.25% | Weak - bottom 3% | 10,072 | | Power density | 209.2 | 212.5 | Weak - bottom 7% | 10,011 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight (kg) | 38.3 kg | 34.5 kg | Weak - bottom 8% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.90% | 21.25% | Weak - bottom 3% | 10,072 | | Power density | 209.2 | 212.5 | Weak - bottom 7% | 10,011 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight per kWp | 58.9 | 52.3 | Weak - bottom 8% | 11,952 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **20.90% module efficiency** - Bottom 3% of the PERC 650-700 W segment, against a median of 21.25%. Ranked 10,072nd in the whole database. - **209.2 watts per square metre** - Bottom 7% of the PERC 650-700 W segment, against a median of 212.5. Ranked 10,011th in the whole database. - **58.9 kg per kWp** - Bottom 8% of the PERC 650-700 W segment, against a median of 52.3. Ranked 11,952nd in the whole database. - **Best for:** Utility-scale, commercial, shaded-installations and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 650 W - **Efficiency:** 20.90 % - **Voltage at Pmax (Vmp):** 37.87 V - **Current at Pmax (Imp):** 17.17 A - **Open-circuit voltage (Voc):** 45.49 V - **Short-circuit current (Isc):** 18.18 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 33 mm - **Weight:** 38.3 kg - **Area:** 3.11 m2 - **Power density:** 209.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 80.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 552 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10072 of 14005 | | Power density | 10011 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 11952 of 14005 | | Warranty | 21 of 14005 | ## About this series The Risen Titan High Performance series consists of advanced bifacial modules that redefine efficiency standards in professional photovoltaic installations. Thanks to bifacial technology, these panels absorb light not only from the front, but also reflected from the ground, which significantly increases the total energy yield per unit area. The use of **PERC cells in Half-Cut architecture** allows for the effective minimization of resistive losses and stable module operation even in partial shading conditions. The Titan series stands out with its **low temperature coefficient**, which guarantees high efficiency during hot summer days when standard solutions lose power. This product is dedicated to investors building solar farms and large commercial systems, where the key factor is maximizing the return on investment and resistance to degradation. The solid frame construction ensures **exceptional resistance to mechanical loads**, such as accumulated snow or strong wind. By choosing these modules, you gain advanced **Multi-Busbar technology**, which shortens the current flow path and increases cell reliability. This solution puts the Risen Titan series ahead of the competition, offering higher power density and better performance characteristics in low light, which translates into measurable financial benefits for the end user. ## Notable figures - At 20.9% efficiency, this panel is on par with typical \*\*PERC 650-700W\*\* modules - Power density of 209.2 W/m² is 3.2 W/m² below \*\*PERC 650-700W\*\* median (212.5 W/m²) - needs more roof space - At -0.34%/°C, hot weather performance is typical for \*\*PERC 650-700W\*\* panels - At 38.3 kg, this panel is 3.8 kg heavier than the \*\*PERC 650-700W\*\* median (34.5 kg) - more demanding for installation crews - 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces ## Questions ### Is the Risen Titan High Performance Bifacial PERC series still available for purchase? The Risen Titan High Performance Bifacial PERC series has been discontinued and is no longer available as a new product through regular distribution channels. Limited stock may still exist with some distributors, but availability is highly restricted. If you are looking for modules with comparable specifications, consider newer Risen Energy lineups or other Tier 1 manufacturers offering bifacial PERC modules rated above 600 Wp. ### What does bifacial technology mean in the Risen Titan panels and how much extra energy does it generate? Bifacial technology means the Risen Titan module captures sunlight on both the front and rear sides, harvesting irradiance reflected off the ground surface — such as gravel, concrete, or white roofing membrane. Depending on the albedo of the surface below and the mounting height, this can increase energy yield by 5 to 25 percent compared to a standard monofacial module. The gain is highest in ground-mounted systems with sufficient clearance beneath the panels. ### What warranty does Risen Energy provide on the Titan 670 Wp modules? Risen Energy backs the Titan series with a 12-year product warranty covering material and workmanship defects. In addition, the manufacturer provides a 30-year linear power output warranty guaranteeing that module performance does not fall below the specified degradation curve over that period. The 30-year power warranty is one of the longest available in the industry and makes this series particularly suitable for utility-scale projects with long investment horizons. ### Do Risen Titan PERC half-cut modules perform well on solar farms with partial shading? Yes, the half-cut cell architecture used in the Risen Titan series splits each PERC cell into two independent halves. This means that shading of only part of the module — for example by a utility pole or a nearby tree — limits power loss to the shaded cells only, not the entire string. Combined with the Multi-Busbar design that shortens the current path, these modules deliver better low-light and partial-shading performance than conventional full-size cell modules. ### How does the Risen Titan 670 Wp panel perform in high summer temperatures? The Risen Titan series features a low temperature coefficient, meaning that as module temperature rises above 25 degrees Celsius, the power loss per degree is smaller than in standard panels. This matters significantly on hot summer afternoons when module temperatures can exceed 70 degrees Celsius. As a result, solar farms using Titan modules generate measurably more energy annually, directly improving the LCOE and overall return on investment. ### What type of installations are Risen Titan 670 Wp modules best suited for, and can they be mounted on a rooftop? Risen Titan 670 Wp modules are designed primarily for large commercial installations and utility-scale solar farms where maximizing power density per unit area is critical. Due to the large physical dimensions and weight typical of modules in this power class, rooftop installation on standard residential buildings is logistically challenging and may require a reinforced racking structure. This product is optimally suited for institutional investors and developers working on ground-mounted, utility-scale projects. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/RSM132-8-650-670BMDG_IEC1500V-33mm_2023H2-1-EN-24b362f39e79.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Cooler, lighter, +4.3 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +4.1 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +50 W, cooler, +4.1 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +45 W, cooler, +4.0 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.9 pp | | [Risen RSM132-8-655M](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-655m) | 655 W | Lighter, +0.2 pp, -5 yr warranty | | [Risen RSM132-8-660BMDG](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-660bmdg) | 660 W | +10 W, +0.3 pp | | [Risen RSM132-8-665BMDG](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-665bmdg) | 665 W | +15 W, +0.5 pp | | [Risen RSM132-8-670M](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-670m) | 670 W | Lighter, +0.7 pp, -5 yr warranty | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +155 W, cooler, +4.2 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +150 W, cooler, +4.0 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +145 W, cooler, +3.9 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +140 W, cooler, +3.7 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +110 W, cooler, +3.6 pp | --- Source: https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-650bmdg Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.