--- title: "Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 600 600W Solar Panel - Specs & Review | ComparePV" description: "Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 600 600W solar panel. Specs: 21.50% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-rsf-xl-g11s-3-bfg-600" updated: 2026-09-11 --- # Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 600 Middle of its segment, heavy for its output 217 panels in the segment PERC 600-650 W ## Identity - **Manufacturer:** Q-Cells - **Model:** Q.PEAK DUO RSF XL-G11S.3 / BFG 600 - **Series:** Q.PEAK DUO RSF XL-G11S SERIES - **Rated power:** 600 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 600-650 W (217 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 600 W | 605 W | Weak - bottom 16% | | | Module efficiency | 21.50% | 21.38% | Typical | 7,958 | | Power density | 214.9 | 213.8 | Typical | 8,031 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight (kg) | 36.4 kg | 34.0 kg | Weak - bottom 2% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.50% | 21.38% | Typical | 7,958 | | Power density | 214.9 | 213.8 | Typical | 8,031 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight per kWp | 60.7 | 55.7 | Weak - bottom 2% | 12,510 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **60.7 kg per kWp** - Bottom 2% of the PERC 600-650 W segment, against a median of 55.7. Ranked 12,510th in the whole database. - **Best for:** Utility-scale and shaded-installations. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 600 W - **Efficiency:** 21.50 % - **Voltage at Pmax (Vmp):** 45.39 V - **Current at Pmax (Imp):** 13.22 A - **Open-circuit voltage (Voc):** 53.66 V - **Short-circuit current (Isc):** 13.80 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 156 - **Bifacial:** yes - **Bifacial gain:** 20.00 ### Physical - **Length:** 2462 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 36.4 kg - **Area:** 2.79 m2 - **Power density:** 214.9 Wp/m2 ### Warranty and degradation - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 510 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7958 of 14005 | | Power density | 8031 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 12510 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Reinforced steel RSF frame** - The RSF construction with advanced anti-corrosion coating withstands snow loads up to 5400 Pa and wind loads up to 3750 Pa, making it a dedicated solution for trackers and utility-scale ground-mount installations in demanding terrain. - **Glass-glass bifacial design** - The rear side adds measurable energy yield on bright or highly reflective ground surfaces, in practice pushing real-world output above datasheet values for monofacial modules on ground-mount installations. - **30-year linear power warranty** - Q-Cells offers a 30-year linear power warranty, placing this series in the premium segment alongside Talesun's BISTAR TP7F78M, while many tier-1 manufacturers still standardly offer only 25 years. - **Faster installation via alignment system** - Notch-tab alignment features allow a two-person crew to install a single module in about 20 seconds, meaningfully cutting construction time on large ground-mount projects. - **PID, LeTID, and Hot-Spot Protect safeguards** - Q.ANTUM cells with PID and LeTID degradation protection plus Hot-Spot Protect support stable performance retention over the panel's lifetime, which matters given the 30-year power warranty. ## Cons - **Lower efficiency than comparable N-type panels** - Efficiency of 21-21.5% (PERC) trails clearly behind comparable modules in this power class built on N-type cells, e.g. Powitt Solar M10 (23.23%) or Tongwei TWMND (23.2%), meaning a larger module area at the same 600 Wp rating and higher BoS cost per kWp. - **Heavier steel RSF frame construction** - The steel RSF frame, while boosting mechanical strength, is heavier than the aluminum frames typical of competing series, which can increase transport costs and mounting-structure requirements at scale. ## About this series The Q-Cells Q.PEAK DUO RSF XL-G11S series are bifacial modules featuring a glass-glass structure, specifically designed for large ground installations, particularly on trackers. The most significant practical difference is the **robust steel frame (RSF)** with advanced anti-corrosion coating - it increases resistance to field conditions and facilitates achieving a stable structure under demanding loads. The series also focuses on **faster installation**: special positioning solutions help installation teams efficiently align the modules and minimize risks during the mounting phase. From the yield perspective, **bifacial capability** is key - the rear side of the module can genuinely contribute energy when the installation is on a light-colored ground surface or an asphalt surface with good reflectivity. Inside, Q.ANTUM monocrystalline cells operate, supported by **PID and LeTID protection, as well as Hot-Spot Protect**, making it easier to maintain performance over time. This is the choice for investors who prioritize LCOE, construction speed, and reliability, rather than just the specifications from the datasheet. ## Notable figures - Efficiency of 21.5% matches the \*\*PERC 600-650W\*\* median - At 214.9 W/m² power density, roof space requirements are typical for \*\*PERC 600-650W\*\* panels - At -0.34%/°C, hot weather performance is typical for \*\*PERC 600-650W\*\* panels - At 36.4 kg (2.4 kg above \*\*PERC 600-650W\*\* median of 34.0 kg), requires checking roof load capacity - Bifacial design (72% factor) captures reflected light - adds 4-11% yield on ground-mount or white roof ## Questions ### Why does the Q.PEAK DUO RSF XL-G11S use a steel frame instead of aluminum? The RSF (Reinforced Steel Frame) with an advanced anti-corrosion coating provides significantly higher mechanical rigidity than standard aluminum frames. This is critical for utility-scale single-axis tracker deployments, where modules undergo continuous rotational movement and higher dynamic loads. The frame is certified for snow loads up to 5,400 Pa and wind loads up to 3,750 Pa, enabling more demanding mounting configurations without voiding the warranty. ### How much extra energy does the bifacial design of the Q.PEAK DUO RSF XL-G11S actually deliver? The glass-glass rear side actively generates power from light reflected off the ground surface. Under favorable conditions — bright gravel, concrete, or snow-covered ground with high albedo — bifacial gain can reach up to 20% additional energy yield compared to a monofacial module with the same front-side power rating. Actual gain depends on ground albedo, module elevation above the ground, and array tilt angle. ### What is the power warranty for the Q.PEAK DUO RSF XL-G11S series? Q-Cells guarantees at least 98% of nominal power in year one, followed by a maximum annual degradation rate of 0.45%. After 10 years the module retains at least 93.95% of rated power; after 30 years, at least 84.95%. The product warranty covering manufacturing defects runs for 12 years. This is among the most competitive linear power warranties available for bifacial PERC modules on the market. ### Is the Q.PEAK DUO RSF XL-G11S series specifically designed for single-axis trackers? Yes, the RSF XL-G11S series was engineered specifically for single-axis tracker applications. The higher-rigidity steel frame minimizes deflection during rotation, and the built-in notch-tab alignment system enables fast, precise module positioning by a two-person installation crew. The elevated wind and snow load ratings keep the installation within certification limits even at demanding sites and in high-wind regions. ### How fast can Q.PEAK DUO RSF XL-G11S modules be installed in the field? Q-Cells integrated a notch-tab positioning system directly into the RSF frame, allowing a two-person team to install a single module in approximately 20 seconds. The alignment features eliminate manual row-by-row adjustment and reduce the risk of mounting errors. For large-scale ground-mount farms, this translates into meaningfully shorter construction schedules and lower overall labor costs per installed watt. ### What power output, efficiency, and cell technology do the Q.PEAK DUO RSF XL-G11S panels use? The series covers a front-side power range of 585 to 600 Wp with module efficiency of at least 21.3%. The cells use Q.ANTUM half-cut PERC technology, featuring a low temperature coefficient of minus 0.34% per degree Celsius. Built-in protection against PID, LeTID, and hot-spot effects helps maintain stable energy yields throughout the full 30-year linear power warranty period. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/qcells-data-sheet-q-peak-duo-rsf-xl-g11s-bfg-series-585-600-2f7abf296b19.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +3.7 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.3 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.1 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | Cooler, lighter, +3.1 pp | | [Q-Cells Q.PEAK DUO XL-G11S.3 / BFG 580](https://comparepv.com/panel/q-cells-q-peak-duo-xl-g11s-3-bfg-580) | 580 W | -20 W, lighter, -0.7 pp | | [Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 585](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-rsf-xl-g11s-3-bfg-585) | 585 W | -15 W, -0.5 pp | | [Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 590](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-rsf-xl-g11s-3-bfg-590) | 590 W | -10 W, -0.4 pp | | [Q-Cells Q.PEAK DUO RSF XL-G11S.3 / BFG 595](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-rsf-xl-g11s-3-bfg-595) | 595 W | Very close match | | [Q-Cells Q.PEAK DUO XL-G11S.3 / BFG 605](https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-xl-g11s-3-bfg-605) | 605 W | Lighter | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +80 W, cooler, +3.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +75 W, cooler, +3.5 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +100 W, cooler, +3.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | +95 W, cooler, +3.4 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | Cooler, lighter, +3.3 pp | --- Source: https://comparepv.com/panel/qcells-hanwha-q-cells-america-inc-q-peak-duo-rsf-xl-g11s-3-bfg-600 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.