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Astronergy Brand review

CHSM78N(DG)/F-BH-645W

645 Wp TOPCon Bifacial
ComparePV verdict

Solid all-round for its segment

Rank 1,496 of 14,005
Compare panels Datasheet PDF
Power (Wp)
645
Strong · top 3%
Efficiency (%)
23.10
Typical · median 22.80%
Density (Wp/m²)
230.7
Typical · median 227.7
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
34.7
Typical · median 32.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Astronergy ASTRO N5 CHSM78N(DG)/F-BH series is an advanced solution based on n-type TOPCon cell technology, redefining efficiency standards in large-scale installations. Thanks to the bifacial double glass design, these modules not only generate energy from both sides but also exhibit extreme resistance to degradation and harsh weather conditions. This is the ideal choice for investors seeking to maximize yields while reducing LCOE. Key differentiators include a minimal temperature coefficient and low LID and LeTID degradation, ensuring stable operation for decades. The use of large cell formats combined with an innovative busbar layout allows for better current management and reduced internal resistance losses. These panels perform perfectly in ground-mounted projects and on roofs with high light reflectance, where every additional kilowatt-hour accelerates the return on investment. Unlike standard older-generation modules, the ASTRO N5 series offers higher efficiency in low-light conditions, making it unrivaled in Polish latitudes. This is a solution for professionals focusing on maximum durability in harsh environments and uncompromising energy efficiency.

Ranking

1,086 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.10% 22.80% Typical 1,570
Power density 230.7 227.7 Typical 1,654
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 53.8 53.1 Typical 7,876
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 1 caution
Best for

Utility-scale, commercial, hot-climate and shaded-installations.

What owners get
Low degradation and 30-year linear warranty

The datasheet confirms a degradation of ≤1.0% per year and ≤0.4%/year from year 2 onwards, with a guaranteed minimum power output of 87.4% after 30 years. The Peer Jinko Tiger Neo 66HL4M-BDX offers the same 87.4%/30-year threshold, but many manufacturers in the entry-level 650 W segment limit the warranty to 25 years with an 84.8% threshold.

N-type TOPCon 4.0 – minimal LID and LeTID degradation

The n-type technology eliminates the dominant LID (Light-Induced Degradation) phenomenon in p-type cells and also reduces LeTID (Light & elevated Temperature Induced Degradation). This results in a significantly higher power output in the first 5 years of operation compared to PERC modules of the same rated power.

Double-glass bifacial construction

Replacing the 2.0+2.0 mm glass with a rear film eliminates EVA degradation (yellowing) and increases resistance to dynamic loads. Bifacial gain in ground-mounted systems with a light-colored or gravel-covered surface typically reaches 10–20% additional energy generation, which directly reduces the LCOE (Levelized Cost of Energy) of the project.

Tier 1 BNEF – confirmed bankability

Astronergy maintains Tier 1 status according to BloombergNEF (Q1 2026) and ranks among the top 6 producers in the 2023 bankability ranking. This status, for projects financed by commercial banks, reduces the risk premium and facilitates the acquisition of project finance.

625–650 W power – cost optimization for BOS

With a format of 2465×1134 mm and a peak power of up to 650 W, the system reduces the number of modules, MC4 connectors, mounting brackets, and labor hours per MW of installed power. Compared to older generation modules with 400–500 W, the ASTRO N5 series can reduce BOS (Balance of System) costs by 8–12% in utility-scale installations.

Trade-offs
Performance lower than the segment leader

The maximum efficiency of the series is 23.3%, while the Jinko Solar Tiger Neo 66HL4M-BDX achieves 24.06% at the same 650 W power output. The difference of 0.76% indicates that approximately 3.3% more modules are needed to achieve a 1 MWp installed power in Astroenerge compared to Jinko, which could increase the land area occupied or installation costs in large ground-mounted projects.

Notes from the database
  • At 23.1% efficiency, this panel is on par with typical TOPCon 600-650W modules
  • 230.7 W/m² power density - 3.0 W/m² more than TOPCon 600-650W median (227.7 W/m²), more power per roof area
  • At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • Weight of 34.7 kg is 2.0 kg above TOPCon 600-650W median (32.7 kg) - verify structural support
  • In the top 11% for efficiency among all TOPCon panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 645 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.10 % Typical Segment median 22.80%
Vmpp · Impp 46.95 V · 13.74 A Operating point at max power
Voc · Isc 56.81 V · 14.43 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×30 mm · 2.80 m² of roof
Weight 34.7 kg Typical Typical · median 32.7 kg
Cells 156 · TOPCon Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.043 %/°C
NOCT 41 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 564 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

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 645 Wp appear here. The rest cover the whole series.

30-Year Linear Power Warranty 30-Year Linear Power Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Astronergy CHSM78N(DG)/F-BH-645W 645 W 23.10% -0.290 34.7 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Cooler, lighter, +2.1 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +35 W, lighter, +2.1 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +30 W, lighter, +1.9 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Cooler, lighter, +1.9 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +50 W, cooler, +1.8 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +1.7 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg Cooler, lighter, +1.7 pp
CHSM78N(DG)/F-BH-625W 625 W 22.40% -0.290 34.7 kg -20 W, -0.7 pp
CHSM78N(DG)/F-BH-630 630 W 22.50% -0.290 34.7 kg -15 W, -0.6 pp
CHSM78N(DG)/F-BH-635 635 W 22.70% -0.290 34.7 kg -10 W, -0.4 pp
CHSM78N(DG)/F-BH-640 640 W 22.90% -0.290 34.7 kg -0.2 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +55 W, cooler, +1.9 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +25 W, cooler, +1.7 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty coverage applies to the Astronergy ASTRO N5 CHSM78N(DG)/F-BH series?
The ASTRO N5 CHSM78N(DG)/F-BH series comes with a 15-year product warranty and a 30-year linear power output warranty. After 30 years of operation, the module retains a minimum of 87.4% of its initial nominal power. Astronergy holds Tier 1 manufacturer status, meaning the warranty is additionally backed by an international insurance provider, significantly reducing the financial risk of the investment.
Are the Astronergy ASTRO N5 650W panels suitable for installation in the Polish climate?
Yes, the ASTRO N5 series is particularly well-suited to Polish conditions. The n-type TOPCon technology delivers higher efficiency under the low-irradiance conditions typical of Polish autumns and winters. The power temperature coefficient is only -0.29%/°C, resulting in lower thermal losses on hot summer days compared to older p-type modules. The dual-glass construction additionally eliminates moisture ingress and PID degradation issues common in cold, rainy climates.
What does bifacial mean in the ASTRO N5 series, and how much additional energy can be harvested from the rear side of the panel?
Bifacial means the module generates electricity from both the front and rear surfaces. In the ASTRO N5 CHSM78N(DG)/F-BH series, the rear surface captures irradiance reflected from the ground or rooftop beneath the array. In ground-mounted installations with a light-colored albedo surface, or on roofs with a high reflectance coefficient, the typical bifacial gain ranges from 5% to 15%, directly reducing the LCOE of the entire system.
Are the 650W ASTRO N5 CHSM78N(DG)/F-BH modules compatible with standard mounting structures?
The modules measure 2465 × 1134 × 30 mm and weigh approximately 34.7 kg. Due to their large format (78-cell layout), they are intended primarily for ground-mounted systems and industrial flat-roof installations where the racking structure can support their weight. Prior to installation, the roof load-bearing capacity and compatibility with the existing mounting system should be reviewed with the installer, as the physical dimensions exceed those of typical 60-cell residential modules.
How does the TOPCon technology used in the ASTRO N5 series differ from conventional PERC panels?
The n-type TOPCon cells used in the ASTRO N5 achieve module efficiencies of 22.5–23.3%, whereas standard PERC modules typically reach 20–21%. TOPCon also exhibits significantly lower LID and LeTID degradation, meaning reduced power loss during the initial years of operation. In practice, the system owner obtains more kilowatt-hours from the same roof area over the entire 30-year linear power warranty period.
Is Astronergy a reputable manufacturer, and do the ASTRO N5 panels hold recognized quality certifications?
Astronergy is part of the Chint Group and is classified as a Tier 1 manufacturer by independent industry agencies, confirming financial stability and verified production quality. The ASTRO N5 CHSM78N(DG)/F-BH series holds IEC 61215 and IEC 61730 certifications as required for the European market. The product warranty is underwritten by an international insurance provider, offering an additional layer of protection against manufacturer-related risks over the long investment horizon.
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