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Astronergy CHSM54N(BL)-HC 435W
Astronergy Brand review

CHSM54N(BL)-HC 435W

435 Wp TOPCon
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 9,181 of 14,129
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
22.30
Strong · top 17%
Density (Wp/m²)
222.8
Strong · top 17%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
21.3
Typical · median 22.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Astronergy ASTRO N5s (Monofacial Series) was designed for maximum energy production from limited roof space, without compromising on aesthetics and durability. These modules feature a compact structure, often chosen where convenient installation and a cohesive system appearance matter - such as on single-family homes, segment roofs, small businesses, or premium projects.

A key advantage is the use of n-type TOPCon cells, which help maintain high efficiency over a long operational lifespan and reduce typical losses seen in standard technologies. In practice, this translates to a more reliable yield in real-world conditions, even at higher temperatures and varying sunlight exposure. Additionally, SMBB technology enhances current flow and improves resistance to micro-cracking, contributing to dependability.

The ASTRO N5s features an all-black design, making it an excellent fit for modern roofs, where appearance is key. This series is for investors seeking higher power density on the roof, easier logistics, and a sensible cost-yield balance for years to come.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.30% 22.00% Strong · top 17% 5,161
Power density 222.8 220.2 Strong · top 17% 5,212
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 49.0 51.5 Typical 2,662
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 2 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Strengths
22.30% module efficiency

Top 17% of the TOPCon 400-450 W segment, against a median of 22.00%.

222.8 watts per square metre

Top 17% of the TOPCon 400-450 W segment, against a median of 220.2.

What owners get
Low Degradation N-type TOPCon

Independent tests by CPVT confirmed a first-year degradation rate of 0.66% for ASTRO N modules, compared to the industry average of approximately 1.0%. Subsequent years: 0.4% per year (linear degradation). This translates to approximately 150-200 kWh more per year for a 10 kWp installation, compared to typical PERC modules.

Favorable temperature coefficient

The efficiency of -0.29%/°C (data from the CHSM54N-HC datasheet) is significantly better than the standard PERC (-0.35%/°C). At a typical operating temperature of 60°C, this translates to approximately 7W more power per module compared to a comparable PERC module - which is particularly important in the Polish climate, where roofs can get very hot in the summer.

30-year linear warranty + insurance

The manufacturer guarantees >87.4% power output after 30 years, and the warranty is protected by an external insurance company (Lloyd's of London / Astronergy reinsurance program), which means that claims can be pursued even in the event of the manufacturer's bankruptcy - a rare feature in the mid-range segment.

Bankability Tier 1 - BNEF's ranking of the top 6 globally

Astronergy is listed on the BNEF Tier 1 list (confirmed for Q2 2025) and ranked 6th in the Bloomberg Bankability ranking in 2023, with an annual production capacity of 56 GW. For projects requiring bank financing, it is one of the few Tier B manufacturers with full market acceptance.

Efficiency of 21.5-22.5% in a compact format

The 54-cell format (1722×1134 mm) with efficiency up to 22.5% achieves a power density of approximately 227 W/m² - comparable to KDM Kingdom Solar (22.5%) and Lina Energy LEPV 132 (22.37%) in the same 440 Wp power range, while maintaining convenient installation logistics on rooftops.

Trade-offs
Product warranty is only 15 years.

The standard product warranty is 15 years, while some competitors in the TOPCon segment (including certain Astronergy and Luxor Solar variants on premium markets) offer 25 years. For prosumer installations with an expected lifespan of 25+ years, this difference is significant in the event of any mechanical issues.

Performance below segment leader

The maximum efficiency of 22.5% is lower than Luxor ECO LINE N-TYPE NON-REFLECT (22.86%) with the same power rating of 440 Wp and similar TOPCon technology. The difference of 0.36% in efficiency per panel with an area of approximately 1.95 m² translates to roughly 7 W per module - which, with 20 panels, results in approximately 140 Wp less without compromising on price.

Notes from the database
  • Efficiency of 22.3% matches the TOPCon 400-450W median
  • At 222.8 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
  • #5161 for efficiency, #2220 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.30 % Strong Segment median 22.00%
Vmpp · Impp 32.44 V · 13.41 A Operating point at max power
Voc · Isc 38.60 V · 14.19 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.3 kg Typical Typical · median 22.0 kg
Cells 108 · 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 380 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 435 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 CHSM54N(BL)-HC 435W 435 W 22.30% -0.290 21.3 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, cooler, +2.0 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.0 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, cooler, +2.0 pp
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, cooler, +2.0 pp
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, cooler, +2.0 pp
CHSM54N(BL)-HC / CHSM54N(BLH)-HC (420W class) 420 W 21.50% -0.290 21.3 kg -15 W, -0.8 pp
CHSM54N(BL)-HC / CHSM54N(BLH)-HC (425W class) 425 W 21.80% -0.290 21.3 kg -10 W, -0.5 pp
CHSM54N(BL)-HC / CHSM54N(BLH)-HC (430W class) 430 W 22.00% -0.290 21.3 kg -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +75 W, cooler, +2.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +60 W, cooler, +2.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +70 W, cooler, +2.4 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +70 W, heavier, +2.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +55 W, cooler, +2.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +65 W, cooler, +2.2 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +65 W, cooler, +2.2 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1928 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the ASTRO N5s (Monofacial Series) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What warranty coverage applies to Astronergy ASTRO N5s panels?
The ASTRO N5s series comes with a 15-year product warranty covering manufacturing defects and material failures, along with a 30-year linear power output warranty. Under this warranty, Astronergy guarantees that the modules will retain at least 87.4% of their original rated power after three decades of operation. This represents one of the longest power warranty standards available on the market and reflects Astronergy's confidence in the long-term durability of its n-type TOPCon technology.
What is TOPCon technology and why does it matter in the ASTRO N5s series?
TOPCon (Tunnel Oxide Passivated Contact) is an n-type cell technology in which an ultra-thin silicon oxide interlayer suppresses charge carrier recombination at the contact interface. In practice, this translates into higher module efficiency (above 22%), a low temperature coefficient of approximately -0.29%/°C, and slower long-term degradation compared to mainstream p-type PERC cells. For a residential rooftop installation, this means more energy harvested from the same surface area over the system's lifetime.
Are Astronergy ASTRO N5s panels suitable for a small residential rooftop?
Yes, the ASTRO N5s series is specifically designed with prosumer and residential installations in mind. Modules rated up to 440 Wp feature compact dimensions of approximately 1722 × 1134 mm, making them well-suited for standard gabled and pitched roofs. The high power density allows more energy to be generated from a limited roof area, while the all-black design gives the installation a uniform, aesthetically consistent appearance on modern facades and dark roofing materials.
Does the ASTRO N5s series generate power on overcast days or during high summer temperatures?
Yes, although every panel experiences some efficiency loss under heat, the ASTRO N5s performs better than older p-type technologies in both scenarios. The low temperature coefficient of approximately -0.29%/°C means reduced power losses when module temperature rises above 25°C during summer. In addition, n-type TOPCon technology offers superior response to diffuse irradiance, resulting in a more stable energy yield under the variable solar conditions characteristic of the Polish climate.
What does the all-black design of the ASTRO N5s mean, and does it affect performance?
All-black refers to the configuration in which both the aluminum frame and the backsheet are finished in black, and the cells carry no visible white gaps between them. Aesthetically, the modules blend seamlessly into dark roofs, making them a popular choice for premium residential projects and semi-detached housing segments. The impact on electrical performance is minimal and practically imperceptible under real operating conditions, as the N5s series maintains a module efficiency above 22% regardless of the color variant selected.
Is Astronergy a reliable manufacturer, and is the ASTRO N5s series available in Poland?
Astronergy, part of the CHINT Group, is listed on Bloomberg's Tier 1 module manufacturer ranking, confirming both financial stability and consistent production quality. The company has earned the Top Performer designation in PVEL reliability testing on multiple occasions. ASTRO N5s panels are actively distributed in Poland through photovoltaic wholesale networks. The series remains in active production, so module availability and warranty service should not be concerns for purchases made in 2025.
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