--- title: "Huasun RS490S8R-108GANT 490W Solar Panel - Specs & Review | ComparePV" description: "Huasun RS490S8R-108GANT 490W solar panel. Specs: 22.05% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/huasun-rs490s8r-108gant" updated: 2026-09-11 --- # Huasun RS490S8R-108GANT Middle of its segment, heavy for its output 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** Huasun - **Model:** RS490S8R-108GANT - **Series:** Aurora Pro RS490~515S8R-108GANT - **Rated power:** 490 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) | 490 W | 465 W | Strong - top 12% | | | Module efficiency | 22.05% | 22.52% | Weak - bottom 22% | 6,233 | | Power density | 220.5 | 225.2 | Weak - bottom 21% | 6,236 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 6% | 8,005 | | Weight (kg) | 30.0 kg | 24.0 kg | Weak - bottom 3% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.05% | 22.52% | Weak - bottom 22% | 6,233 | | Power density | 220.5 | 225.2 | Weak - bottom 21% | 6,236 | | Temperature coefficient | -0.310 | -0.290 | Weak - bottom 6% | 8,005 | | Weight per kWp | 61.2 | 52.2 | Weak - bottom 3% | 12,616 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **61.2 kg per kWp** - Bottom 3% of the TOPCon 450-500 W segment, against a median of 52.2. Ranked 12,616th in the whole database. - **-0.310 %/°C temperature coefficient** - Bottom 6% of the TOPCon 450-500 W segment, against a median of -0.290. Ranked 8,005th in the whole database. - **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, hot-climate and shaded-installations. - **Not ideal for:** Weight-limited structures, hot climates and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 490 W - **Efficiency:** 22.05 % - **Voltage at Pmax (Vmp):** 33.05 V - **Current at Pmax (Imp):** 14.83 A - **Open-circuit voltage (Voc):** 39.64 V - **Short-circuit current (Isc):** 15.54 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.310 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 - **Bifacial:** yes ### Physical - **Length:** 1960 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 30.0 kg - **Area:** 2.22 m2 - **Power density:** 220.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 428 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6233 of 14005 | | Power density | 6236 of 14005 | | Temperature coefficient | 8005 of 14005 | | Weight | 12616 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Best-in-class temperature coefficient** - HJT technology delivers a Pmax temperature coefficient of -0.26%/°C, versus -0.29% to -0.30%/°C for comparable TOPCon modules (Sunpro Power 210R Bifacial, Canadian Solar TOPBiHiKu6). On hot days (35°C ambient, ~70°C cell temperature), this translates to roughly 1.5–2% higher energy yield compared to TOPCon peers in the same power class. - **Zero LID degradation** - N-type HJT cells contain no boron, eliminating light-induced degradation (LID) entirely. P-type PERC modules lose 1–3% of rated output within the first hours of sun exposure; the Aurora Pro RS490~515 series is immune to this mechanism, resulting in a stable, predictable power output curve throughout the system's lifetime. - **Up to 23.17% efficiency — top of the peer group** - The highest-power variant reaches 23.17% module efficiency, matching the Sunpro Power TOPCon 210R Bifacial (23.17%) and clearly outperforming the Canadian Solar TOPBiHiKu6 (22.8%). Within this peer group, only the Jolywood JW-HD120N Black Series (23.3%) exceeds it — by a margin of just 0.13 percentage points. - **~90% bifaciality in dual-glass construction** - The symmetric HJT cell structure (amorphous silicon layers on both sides) enables bifaciality up to 90%, compared to 70–85% typical for TOPCon bifacial modules. The dual-glass encapsulation minimizes PID risk and improves mechanical durability, which is particularly relevant for ground-mount systems and industrial rooftops. - **BNEF Tier 1 — confirmed bankability** - Huasun achieved BNEF Tier 1 PV Module Manufacturer status (Q1 2025) in record time since its founding in 2020. This designation confirms the manufacturer's eligibility for project financing by recognized financial institutions and is a prerequisite for most bank-financed utility-scale and C&I PV projects above 100 kWp. ## Cons - **HJT price premium over TOPCon (~10–15%)** - HJT manufacturing requires costly PECVD/PVD equipment not compatible with existing PERC/TOPCon lines. In 2024–2025, HJT module prices are approximately $0.100/W, while comparable TOPCon peers (Canadian Solar TOPBiHiKu6, Sunpro Power 210R) are available at around $0.087/W. The ~15% cost differential can be difficult to justify in standard residential or prosumer installations where LCOE is the primary metric. - **Limited manufacturer operating history** - Huasun was founded in 2020, giving the company only 5–6 years of operational history. By comparison, Canadian Solar has operated since 2001 and Jolywood since approximately 2010. With a 30-year power warranty on offer, the absence of long-term field data from the manufacturer's own deployments remains a risk factor that some project insurers and lenders still consider during due diligence. ## About this series The Huasun Aurora Pro RS490~515S8R-108GANT series are bifacial modules in a dual-glass configuration, designed to realistically increase energy yield not only in ideal sunlight, but also in typical Polish conditions. The use of n-type cells in the HJT technology results in a \<\, ensuring predictable performance over the long term. In practice, this means more stable production results and a lower risk of discrepancies between predicted and actual performance. The \<\> and \<\> are also noteworthy, which helps maintain power output on hot rooftops and in industrial halls. The bifacial design provides \<\, particularly on light-colored roofs, gravel, or when mounted on the ground. This is a good choice for investors looking for modules for C&I, PV farms, and modern residential rooftops, where durability, stability, and long-term profitability are key. ## Notable figures - At 22.1% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 220.5 W/m² is 4.7 W/m² below \*\*TOPCon 450-500W\*\* median (225.2 W/m²) - needs more roof space - Temperature coefficient of -0.31%/°C is 0.02pp worse than \*\*TOPCon 450-500W\*\* median (-0.29%/°C) - higher losses in summer heat - At 30.0 kg, this panel is 6.0 kg heavier than the \*\*TOPCon 450-500W\*\* median (24.0 kg) - more demanding for installation crews - Ranked #6233 out of 14005 panels for efficiency in the database ## Questions ### What is the peak power output of the Huasun Aurora Pro RS490~515S8R-108GANT panels? The series covers a power range from 490 to 515 Wp (STC), with module efficiency between 22.05% and 23.17%. The top RS515 variant ranks among the most efficient 108-cell formats currently on the market. Module dimensions are 1960 × 1134 mm, making it compatible with standard racking systems used in both rooftop and ground-mount installations. ### What warranty does the Huasun Aurora Pro RS490~515S8R-108GANT series carry? The manufacturer provides a 15-year product warranty covering materials and workmanship, and a 30-year power output warranty. After 30 years, the module should retain at least 87.4% of its rated power. The low LID degradation typical of n-type TOPCon cells means real-world energy yields remain closer to rated values over the full warranty period than with older cell technologies. ### Do the bifacial Aurora Pro RS490~515S8R-108GANT modules deliver a real energy gain in Central European conditions? Yes, though the gain depends on the specific installation setup. On ground-mount systems with a light-colored surface such as gravel or a white membrane, the additional bifacial yield can reach 5–15%. On sloped roofs with a dark covering, the effect is more limited. The dual-glass construction also provides superior moisture resistance and withstands thermal cycling, which is particularly valuable in the variable Polish climate. ### How does TOPCon technology affect the performance of Huasun Aurora Pro RS490~515S8R-108GANT panels on hot days? n-Type TOPCon cells have a temperature coefficient of approximately -0.31% /°C, resulting in fewer power losses when the module heats up compared to standard PERC panels, which typically range from -0.34 to -0.36% /°C. On heavily heated industrial rooftops where module temperatures can exceed 60–70°C, this difference translates into measurably higher daily energy production. ### Are the Huasun Aurora Pro RS490~515S8R-108GANT panels suitable for industrial rooftops and C&I installations? Yes, the series is designed with C&I and utility-scale PV applications in mind. The dual-glass build offers strong moisture and PID resistance, which matters in large installations with long DC cable runs. With up to 515 Wp and efficiency above 22%, more power can be generated from the same roof area, reducing overall BOS costs per installed kilowatt. ### How do the Huasun Aurora Pro RS490~515S8R-108GANT TOPCon modules compare to standard PERC panels? n-Type TOPCon cells stand out primarily for their lower LID (Light-Induced Degradation) — PERC modules can lose 1–2% of output in year one, while TOPCon stays below 0.5%. Higher efficiency exceeding 22% means more power from the same footprint. The bifacial Aurora Pro design also captures additional yield from the rear side of the module, something monofacial PERC panels cannot provide. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/s8r-108gant-490-515w-1960x1134x30-0f9d9c3758f1.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.8 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.6 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.4 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.4 pp | | [Huasun HSN-210R-B72DSN325](https://comparepv.com/panel/huasun-hsn-210r-b72dsn325) | 325 W | -165 W, cooler, -7.5 pp | | [Huasun HSN-210R-B72DSN330](https://comparepv.com/panel/huasun-hsn-210r-b72dsn330) | 330 W | -160 W, cooler, -7.2 pp | | [Huasun HSN-210R-B72DSN335](https://comparepv.com/panel/huasun-hsn-210r-b72dsn335) | 335 W | -155 W, cooler, -7.0 pp | | [Huasun HSN-210R-B108DSN495](https://comparepv.com/panel/huasun-hsn-210r-b108dsn495) | 495 W | Cooler, lighter, +0.2 pp | | [Huasun HSN-210R-B108DSN500](https://comparepv.com/panel/huasun-hsn-210r-b108dsn500) | 500 W | Cooler, lighter, +0.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +70 W, lighter, +2.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +65 W, lighter, +2.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +60 W, lighter, +2.3 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +50 W, lighter, +2.3 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +50 W, lighter, +2.3 pp | --- Source: https://comparepv.com/panel/huasun-rs490s8r-108gant Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.