--- title: "Astronergy CHSM54N-HC-425W 425W Solar Panel - Specs & Review | ComparePV" description: "Astronergy CHSM54N-HC-425W 425W solar panel. Specs: 21.80% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w" updated: 2026-09-11 --- # Astronergy CHSM54N-HC-425W Solid all-round for its segment 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** Astronergy - **Model:** CHSM54N-HC-425W - **Series:** ASTRO N5s (CHSM54N-HC) Monofacial Series 425~445W - **Rated power:** 425 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 425 W | 435 W | Typical | | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.6 | 220.2 | Typical | 7,172 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 21.3 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.80% | 22.00% | Typical | 7,022 | | Power density | 217.6 | 220.2 | Typical | 7,172 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 50.1 | 51.4 | Typical | 3,619 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 425 W - **Efficiency:** 21.80 % - **Voltage at Pmax (Vmp):** 32.10 V - **Current at Pmax (Imp):** 13.24 A - **Open-circuit voltage (Voc):** 38.20 V - **Short-circuit current (Isc):** 13.98 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.043 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.3 kg - **Area:** 1.95 m2 - **Power density:** 217.6 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:** 371 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 7022 of 14005 | | Power density | 7172 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 3619 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Highest efficiency within the comparison group** - The maximum efficiency of 22.8% surpasses all comparable products: Q-Cells Q.TRON BLACK (22.3%), Solitek SOLRIF D Satin (22.06%), and SunEvo SE6-46SC EVOX (21.4%). This translates to a significantly higher energy yield from a limited roof area – the advantage over SunEvo is more than 1.4 percentage points. - **Low thermal expansion coefficient (-0.29%/°C)** - The Pmax coefficient at -0.29%/°C is better than typical PERC modules (-0.35%/°C), resulting in lower production losses on hot days – a difference of 6-10% in losses for every 10°C above STC. This is particularly significant in Poland's climate during the summer months. - **TOPCon N-type: degradation ≤0.4%/year** - N-type TOPCon cells exhibit an annual degradation of ≤0.4% (over 2-30 years), compared to ≤1.0% in the first year, guaranteeing ≥87.4% of their nominal power after 30 years. PERC modules typically degrade by 0.45-0.55%/year, which results in a real difference of 2-4% after 30 years. - **30-year power output warranty** - A 30-year linear warranty on power output (≥87.4% after 30 years) is one of the longest industry standards in the residential segment. Furthermore, the warranty is insured by an external, international insurance company, which minimizes the risk of it being lost in the event of financial difficulties for the manufacturer. - **Tier 1 BNEF – Top 6 globally** - Astronergy maintains a Tier 1 BNEF bankability rating and ranked in the top 6 global module manufacturers in the 2023 BloombergNEF ranking. With a production capacity of 56 GW (by Q2 2025), the company ensures stable supply and long-term service support. ## Cons - **Product warranty is only 15 years.** - The product warranty is 15 years, while the direct competitor, Q-Cells Q.TRON BLACK, typically offers a standard 25-year product warranty. In the event of a mechanical failure of the module after 15 years of operation, the investor is responsible for the full cost of replacement. ## About this series The Astronergy ASTRO N5s (CHSM54N-HC) Monofacial 425-445W series was designed for maximum yield on limited roof surfaces, without complicating the installation project. The use of **N-type monocrystalline cells in TOPCon technology** ensures stable performance over the long term and reduced sensitivity to typical degradation phenomena, which can lower energy production over subsequent seasons. Thanks to its **half-cut** construction, the module performs better under real-world conditions-partial shading and uneven irradiance. This is an excellent solution for investors seeking high energy production on residential, commercial, and public building rooftops, where every square meter counts. The series also features an advanced, modern **glass-backsheet** structure, simplifying installation and fitting seamlessly with popular roofing systems. In practice, you get a module optimized for **high long-term operational efficiency** and predictable energy output, setting it apart from many competitive panels based on outdated solutions. ## Notable figures - Efficiency of 21.8% matches the \*\*TOPCon 400-450W\*\* median - At 217.6 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 400-450W\*\* median - In the top 50% for efficiency among all TOPCon panels ## Questions ### What warranty is offered on the Astronergy ASTRO N5s CHSM54N-HC panels? The ASTRO N5s series comes with a 15-year product warranty covering material and workmanship defects, as well as a 30-year linear power output warranty. After 30 years of operation, the panel is guaranteed to retain at least 87.4% of its original rated power. These are standard terms for Tier 1 modules, and Astronergy backs them with an international insurance policy. ### Is the Astronergy ASTRO N5s 445W suitable for a typical pitched roof on a single-family home? Yes. The ASTRO N5s series, with dimensions of 1722×1134×30 mm and a weight of approximately 21.3 kg, is well suited for pitched-roof installations. A single installer can handle the panel independently during mounting. The glass-backsheet construction is compatible with popular racking systems, and the 54-cell half-cut layout minimizes power losses under partial shading from chimneys or dormers. ### What is TOPCon technology and why should it be chosen over standard PERC? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that uses an additional passivation layer to reduce charge carrier recombination. In practice, this results in higher module efficiency (up to approximately 23% in the N5s series) and a better temperature coefficient of no more than -0.29%/°C, compared to the typical -0.35%/°C for standard PERC modules. As a result, the panel loses significantly less power on hot summer days. ### How much energy can a system built from Astronergy ASTRO N5s 445W panels produce annually? Actual energy yield depends on the installation location, roof tilt angle, and any shading present. As a general estimate, a single 445W panel in Poland will produce approximately 400–500 kWh per year under optimal orientation. A 10-panel system (4.45 kWp combined) can cover the annual consumption of a typical household using 4,000–5,000 kWh per year. TOPCon modules also deliver better yields under diffuse light conditions compared to older technologies. ### Does the ASTRO N5s CHSM54N-HC panel perform effectively in winter and during overcast weather? Yes. N-type TOPCon cells feature a low Pmax temperature coefficient of -0.29%/°C, which means that in winter, when the panel operating temperature is low, the module can temporarily exceed its nominal rated power. This technology also performs better under weak, diffuse light compared to PERC modules — an important advantage in the Polish climate, where overcast days account for a significant portion of the year. ### How does the Astronergy ASTRO N5s series differ from this manufacturer's older PERC modules? The key difference lies in the cell type: the ASTRO N5s uses N-type TOPCon cells instead of P-type PERC. This translates to higher module efficiency (up to 23.02% vs. the typical 20–21% for PERC), reduced initial light-induced degradation (LID), and improved performance at elevated temperatures. The N5s series achieves a maximum power output of 445W in a footprint similar to previous models, delivering greater energy yield from the same roof area. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/402626860661dc4fab1249-88560d927725.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +50 W, +2.2 pp, +10 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +40 W, hotter, +2.0 pp | | [JA Solar JAT54S40-475/LR](https://comparepv.com/panel/ja-solar-jat54s40-475-lr) | 475 W | +50 W, cooler, +2.0 pp | | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | 475 W | +50 W, heavier, +2.0 pp | | [Astronergy CHSM48RN(DG)/F-BH-475](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm48rn-dg-f-bh-475) | 475 W | +50 W, heavier, +2.0 pp | | [AIKO AIKO-A475-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a475-mce54mw) | 475 W | +50 W, cooler, +2.0 pp | | [AIKO AIKO-A475-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a475-mah54mw) | 475 W | +50 W, cooler, +2.0 pp | | [Astronergy CHSM54N(BL)-HC / CHSM54N(BLH)-HC (420W class)](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm54n-bl-hc-chsm54n-blh-hc-420w-class) | 420 W | -0.3 pp | | [Astronergy CHSM54N(BL)-HC / CHSM54N(BLH)-HC (430W class)](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm54n-bl-hc-chsm54n-blh-hc-430w-class) | 430 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +85 W, cooler, +3.2 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +70 W, cooler, +3.0 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +80 W, cooler, +2.9 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +65 W, cooler, +2.7 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +75 W, cooler, +2.7 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +75 W, cooler, +2.7 pp | --- Source: https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w 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.