--- title: "DualSun DS450-108M10TB-03 450W Solar Panel - Specs & Review | ComparePV" description: "DualSun DS450-108M10TB-03 450W solar panel. Specs: 22.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/huasun-ds450-108m10tb-03" updated: 2026-09-11 --- # DualSun DS450-108M10TB-03 Strong in heat, heavy for its output 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** DualSun - **Model:** DS450-108M10TB-03 - **Series:** FLASH Half-Cut Glass-Glass TOPCon - **Rated power:** 450 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 450 W | 465 W | Weak - bottom 9% | | | Module efficiency | 22.00% | 22.52% | Weak - bottom 18% | 6,517 | | Power density | 220.5 | 225.2 | Weak - bottom 21% | 6,236 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 1,309 | | Weight (kg) | 25.7 kg | 24.0 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.00% | 22.52% | Weak - bottom 18% | 6,517 | | Power density | 220.5 | 225.2 | Weak - bottom 21% | 6,236 | | Temperature coefficient | -0.280 | -0.290 | Strong - top 11% | 1,309 | | Weight per kWp | 57.1 | 52.2 | Weak - bottom 6% | 11,050 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **-0.280 %/°C temperature coefficient** - Top 11% of the TOPCon 450-500 W segment, against a median of -0.290. ### Watch out for - **57.1 kg per kWp** - Bottom 6% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 11,050th in the whole database. - **22.00% module efficiency** - Bottom 18% of the TOPCon 450-500 W segment, against a median of 22.52%. - **220.5 watts per square metre** - Bottom 21% of the TOPCon 450-500 W segment, against a median of 225.2. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Weight-limited structures, tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 450 W - **Efficiency:** 22.00 % - **Voltage at Pmax (Vmp):** 32.47 V - **Current at Pmax (Imp):** 13.86 A - **Open-circuit voltage (Voc):** 39.18 V - **Short-circuit current (Isc):** 14.68 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.280 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1800 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 25.7 kg - **Area:** 2.04 m2 - **Power density:** 220.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 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:** 393 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6517 of 14005 | | Power density | 6236 of 14005 | | Temperature coefficient | 1309 of 14005 | | Weight | 11050 of 14005 | | Warranty | 21 of 14005 | ## Pros - **30-Year Product and Power Output Warranty** - DualSun guarantees a minimum of 87.4% power output after 30 years of operation, exceeding the industry standard offered by comparable manufacturers (JA Solar, Trina Solar — typically 25 years / 84.8%). The warranty covers both product defects and linear power degradation, providing genuine investment protection across three decades. - **Glass-Glass Construction with Above-Standard Durability** - The 2 mm front glass plus rear glass configuration eliminates the backsheet, which is prone to delamination and moisture ingress. The module has passed mechanical load tests of 5,400 Pa (positive pressure) and 2,400 Pa (negative pressure) — values 2–3× higher than the IEC 61215 minimum. Certified hail resistance (IEC 61215:2016, 25 mm ball, 23 m/s, 10 impact points) is particularly relevant under Polish storm conditions. - **Bifacial Design with Measurable Energy Yield Gains** - Dual-sided energy harvesting delivers a manufacturer-stated annual yield increase of +10% under favorable conditions (high-albedo surface, appropriate tilt angle). Combined with N-type TOPCon technology — which offers a low temperature coefficient and superior performance under diffuse irradiance — the module consistently produces more energy than its nominal 450 Wp rating suggests. - **Low-Carbon Certification and EPD** - The DualSun FLASH holds both the ECS PPE2 certification and an Environmental Product Declaration (EPD), documenting a carbon footprint approximately 17% lower than that of standard mono PERC modules. For commercial installations and prosumers applying for green incentive programs (e.g., Mój Prąd with environmental eligibility criteria), this can provide a tangible formal advantage. - **Top Brand PV Label and French Market Leader** - DualSun earned the Top Brand PV label in both 2021 and 2022 and holds a 20% share of the residential PV installation market in France. As a European manufacturer with a documented track record of over 100,000 installations across 25+ countries since 2013, the company conducts design and specification audits through its engineering team in Marseille, with production carried out at certified facilities. ## Cons - **Module Efficiency of 22% Trails Peer Comparables** - At the same rated power of 450 Wp, comparable modules achieve higher module efficiency: SunKean/Sunket SKT450 at 23.04%, Suntech Ultra V Pro at 22.5%, versus the DualSun FLASH at 22.0%. On roof areas where space is constrained, this means the panel requires more surface area per kWp than its direct alternatives. - **Higher Module Weight Due to Glass-Glass Construction** - The glass-glass design results in a module weight of approximately 24.5 kg, roughly 15–20% heavier than typical backsheet modules (approximately 20–21 kg). On older roofs or for larger installations (>20 modules), a structural engineering assessment of the roof deck or rafter system may be required, adding to project costs. ## About this series The DualSun FLASH Half-Cut Glass-Glass TOPCon series is a range of advanced photovoltaic panels designed for maximum durability and high performance in varying weather conditions. The key to exceptional performance lies in the use of **N-type TOPCon cells in a Half-Cut technology**, which minimize energy losses within the module and significantly improve performance in low-light conditions. The **glass-glass** construction eliminates the traditional backsheet, providing excellent resistance to moisture, UV radiation, and mechanical damage - load tests exceed standard norms by 2-3 times, and the panels are certified to withstand hail. Thanks to **bifaciality**, the modules also generate energy from reflected light from the ground, which realistically increases the overall output of the installation without additional costs. The manufacturer offers one of the longest warranties in the industry - **30 years on the product and performance**, which confirms the security of a long-term investment. The series also stands out for its low carbon footprint - the low-carbon certification and even 17% less CO2 emissions compared to standard panels make it a choice for environmentally conscious investors. This is the ideal solution for demanding residential and commercial rooftop installations, where aesthetics, durability, and **sustainable energy production** are key. ## Notable figures - Efficiency of 22.0% is 0.5pp below the \*\*TOPCon 450-500W\*\* median (22.5%) - At 220.5 W/m², this panel generates 4.7 W/m² less per unit area than \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - Temperature coefficient of -0.28%/°C matches the \*\*TOPCon 450-500W\*\* median - At 25.7 kg, this panel is 1.7 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty is offered on DualSun FLASH Half-Cut Glass-Glass TOPCon panels? DualSun offers one of the longest warranties on the market: a 25-year product warranty (extendable to 30 years upon online warranty activation) and a 30-year performance warranty guaranteeing at least 87.4% of nominal power output. In practical terms, a 450 Wp panel will still produce a minimum of approximately 393 Wp after 30 years of operation. By comparison, the typical industry standard is 12–15 years for the product warranty and 25 years for the performance warranty. ### How does the N-type TOPCon technology used in DualSun FLASH panels differ from conventional PERC cells? N-type TOPCon cells feature a passivated tunnel oxide layer on the rear surface that drastically reduces charge carrier recombination. In practice, this translates into higher efficiency (above 22%), improved performance under diffuse light and overcast conditions, and a lower temperature coefficient — meaning reduced power losses on hot days. PERC cells are based on less expensive P-type silicon and typically achieve around 20–21% efficiency without these advantages. ### Are DualSun FLASH Glass-Glass 450 W panels suitable for a standard pitched roof on a single-family home? Yes. The FLASH Half-Cut Glass-Glass TOPCon series is designed for rooftop installations on both residential and commercial buildings with pitched roofs. The glass-glass construction is heavier than standard backsheet modules, so it is important to ensure that the mounting structure is appropriately sized for the panel weight — the 450 Wp model weighs approximately 25–26 kg. The half-cut cell technology also improves resistance to partial shading, which is particularly relevant in the presence of chimneys or dormer windows. ### How much additional energy yield can I realistically expect from the bifacial design of DualSun FLASH TOPCon panels? Bifacial technology allows the rear surface of the module to harvest energy from irradiance reflected off the underlying surface. According to DualSun data, the gain can reach up to 10% compared to a conventional monofacial panel. The actual benefit depends heavily on the albedo of the surface below: light-colored gravel, a white roofing membrane, or snow provide significantly higher reflectivity than dark roof tiles. No additional investment is required — bifaciality is an inherent feature of the module construction. ### Are DualSun FLASH Glass-Glass TOPCon panels resistant to hail and heavy snow loads? Yes. The glass-glass construction eliminates the backsheet, which is prone to degradation over time and susceptible to impact damage. DualSun FLASH panels carry certified hail resistance (RG3 test) and have passed mechanical load tests exceeding the standard IEC 61215 requirements by a factor of two to three. The maximum static load rating for the series is 6,600 Pa on the snow side and 3,600 Pa on the wind side, which corresponds to extreme weather conditions. ### Do DualSun FLASH TOPCon panels hold an environmental certification, and what does the low-carbon designation mean? Yes. The DualSun FLASH series carries a low-carbon certification confirming that the carbon footprint of its manufacturing process is approximately 17% lower than that of standard photovoltaic panels available on the market. As a French manufacturer, DualSun develops its specifications in Marseille and subjects its factories to rigorous audits. For investors applying for subsidies or grants that include a CO2 emissions criterion — such as certain EU funding programs — this certification may carry formal significance in the application process. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/dualsun-fr-fiche-technique-flash-450-half-cut-glass-glass-topcon-c2f9919cca8b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +45 W, lighter, +2.8 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +40 W, lighter, +2.5 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +50 W, cooler, +2.5 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +50 W, lighter, +2.5 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +50 W, lighter, +2.5 pp | | [GCL GCL-NR10R/54BGDF](https://comparepv.com/panel/gcl-gcl-nr10r-54bgdf) | 500 W | +50 W, cooler, +2.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +60 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +55 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/huasun-ds450-108m10tb-03 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.