Light for its output, no clear weak spot
Astronergy ASTRO N7s CHSM54RNs(DG)(BLH)/F-BH Bifacial Series are advanced modules utilizing n-type TOPCon technology, which guarantees higher efficiency and significantly lower annual degradation compared to traditional solutions. The Double Glass construction ensures extreme mechanical resistance and excellent protection against moisture, which is key to maintaining the longevity of the installation in the variable Polish climate. This series stands out with the use of innovative rectangular cells, which allow for optimal utilization of the available roof area, offering higher power density while maintaining the compact dimensions of the entire panel. Thanks to its bifacial properties, these modules generate additional energy from reflected radiation, which significantly shortens the payback period, especially on surfaces with high albedo. This solution effectively eliminates the problem of limited installation space, delivering more electricity from fewer modules. The applied SMBB technology improves current flow and minimizes the risk of micro-cracks, which clearly distinguishes this model from standard competitor products. The N7s series is primarily dedicated to demanding prosumers and companies that care about maximizing profits while maintaining a modern, elegant black frame aesthetic. It is a substantive choice for investors who prioritize innovation and reliability for decades.
Ranking
Signals from the data
Residential and commercial.
Top 20% of the TOPCon 450-500 W segment, against a median of 52.2.
Top 20% of the TOPCon 450-500 W segment, against a median of 225.2.
Top 22% of the TOPCon 450-500 W segment, against a median of 22.52%.
The temperature coefficient of Pmax is just -0.29%/°C, with annual degradation after the first year not exceeding ≤0.4% (per manufacturer datasheet). This is a significant advantage over PERC technology (typically -0.35%/°C, ≥0.5%/year), which in Polish climatic conditions — characterized by high temperature variability — translates into measurably higher annual energy yield throughout the system's operational lifetime.
The manufacturer guarantees ≥87.4% of nominal power output after 30 years of operation. By comparison, the peer-comparable Zonergy ZPM MH3-72, with its lower efficiency (21.16%), does not match this series in terms of long-term investor protection. The warranty is additionally backed by an international insurer (Tier 1 Warranty), further strengthening the credibility of the commitment.
The Double Glass (glass-glass) construction provides superior mechanical resistance and eliminates the risk of moisture ingress, which is critical over a 30-year operational horizon. The bifacial design generates additional energy yield from reflected irradiance — particularly advantageous on high-reflectivity surfaces (snow, light-colored roofing membrane, gravel) with albedo ≥0.3.
Astronergy appears on the BNEF Tier 1 list and in 2023 ranked among the top 6 global module manufacturers in the BloombergNEF bankability ranking. This status reflects documented financing of projects ≥10 MW by independent commercial banks, reducing counterparty risk in long-term installations.
The Zero-Busbar with integrated interconnection technology (ZBB-TF, equivalent to SMBB) improves current conductivity and significantly reduces mechanical stress on cells compared to conventional 5–6-busbar designs. The result is a lower probability of LeTID-related microcracks under cyclic thermal loading, which is typical of Central European climatic conditions.
The ASTRO N7s CHSM54RNs(DG)(BLH)/F-BH series was discontinued in 2025 (product lifecycle: 2023–2025). This creates difficulties in expanding or repowering an installation with identical modules after several years — differences in Pmp and Voc between new and legacy panels of the same nominal power can reach 1–2% — and manufacturer service support and spare part availability may become limited even in the near term.
The Double Glass (glass-glass) construction results in a module weight of 21.5 kg, approximately 15–20% heavier than typical single-glass equivalents (18–19 kg at comparable power output). This may require reinforced mounting structures or a roof load-bearing assessment, generating additional installation costs — particularly on older buildings.
- Efficiency of 23.0% matches the TOPCon 450-500W median
- 230.2 W/m² power density - 5.0 W/m² more than TOPCon 450-500W median (225.2 W/m²), more power per roof area
- At -0.29%/°C, hot weather performance is typical for TOPCon 450-500W panels
- 21.5 kg weight - 2.5 kg lighter than TOPCon 450-500W median (24.0 kg), reducing installation effort
- Ranked #1919 out of 14005 panels for efficiency in the database
Specifications
Datasheet charts
Measured curves published by Astronergy in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 460 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here