---
title: "Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM66N(DG)/F-BH-720 - Solar Panel Comparison | ComparePV"
description: "Compare Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM66N(DG)/F-BH-720 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification."
source: "https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-720"
updated: 2026-09-11
---

# Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM66N(DG)/F-BH-720

CHSM66N(DG)/F-BH-720 leads on the differences that matter

The largest is module efficiency: 0.90 pp more efficient. 6 of 19 comparable parameters are identical.


## The two panels


| Attribute | A | B |
| --- | --- | --- |
| Panel | [Astronergy ASTRO N5s CHSM54N-HC-435W](https://comparepv.com/panel/astronergy-astro-n5s-chsm54n-hc-435w) | [Astronergy CHSM66N(DG)/F-BH-720](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-720) |
| Manufacturer | Astronergy | Astronergy |
| Power | 435 Wp | 720 Wp |
| Efficiency | 22.30 % | 23.20 % |
| Technology | TOPCon | TOPCon |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | ASTRO N5s CHSM54N-HC-435W | CHSM66N(DG)/F-BH-720 | Difference |
| --- | --- | --- | --- |
| Module efficiency | 22.30 % | 23.20 % | +0.90 pp for CHSM66N(DG)/F-BH-720 |
| Rated power | 435 Wp | 720 Wp | +285 W for CHSM66N(DG)/F-BH-720 |
| Power density | 222.8 Wp/m² | 231.8 Wp/m² | +9.0 Wp/m² for CHSM66N(DG)/F-BH-720 |
| Weight | 21.3 kg | 38.0 kg | -16.7 kg for ASTRO N5s CHSM54N-HC-435W |
| Open-circuit voltage | 38.60 V | 49.17 V | 10.57 V apart |
| Short-circuit current | 14.19 A | 18.58 A | 4.39 A apart |
| Module area | 1.953 m² | 3.106 m² | 1.154 m² apart |
| Weight per kWp | 49.0 kg/kWp | 52.8 kg/kWp | -3.8 kg/kWp for ASTRO N5s CHSM54N-HC-435W |
| Voltage at max power | 32.44 V | 40.81 V | 8.37 V apart |
| Current at max power | 13.41 A | 17.64 A | 4.23 A apart |
| Cell count | 108 | 132 | 24 cells apart |
| Bifacial | No | Yes | No vs Yes |
| Dimensions | 1722x1134x30 mm | 2384x1303x33 mm | 1722x1134x30 mm vs 2384x1303x33 mm |


## Every compared parameter


| Parameter | ASTRO N5s CHSM54N-HC-435W | CHSM66N(DG)/F-BH-720 |
| --- | --- | --- |
| Rated power | 435 Wp | 720 Wp |
| Module efficiency | 22.30 % | 23.20 % |
| Power density | 222.8 Wp/m² | 231.8 Wp/m² |
| Open-circuit voltage | 38.60 V | 49.17 V |
| Voltage at max power | 32.44 V | 40.81 V |
| Short-circuit current | 14.19 A | 18.58 A |
| Current at max power | 13.41 A | 17.64 A |
| Temperature coefficient | -0.290 %/°C | -0.290 %/°C |
| Dimensions | 1722x1134x30 mm | 2384x1303x33 mm |
| Module area | 1.953 m² | 3.106 m² |
| Weight | 21.3 kg | 38.0 kg |
| Weight per kWp | 49.0 kg/kWp | 52.8 kg/kWp |
| Product warranty | 15 yrs | 15 yrs |
| Performance warranty | 30 yrs | 30 yrs |
| Annual degradation | 0.40 %/yr | 0.40 %/yr |
| Cell technology | TOPCon | TOPCon |
| Cell type | Monocrystalline | Monocrystalline |
| Cell count | 108 | 132 |
| Bifacial | No | Yes |


## Thirty-year yield

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

- **Cumulative output, ASTRO N5s CHSM54N-HC-435W:** 14,595 kWh
- **Cumulative output, CHSM66N(DG)/F-BH-720:** 24,157 kWh
- **Gap:** 9,562 kWh


## Output when hot


| Condition | Cell temperature | ASTRO N5s CHSM54N-HC-435W | CHSM66N(DG)/F-BH-720 | Retained |
| --- | --- | --- | --- | --- |
| Standard test conditions | 25 °C | 435 W | 720 W | 100.0% of rated power |
| Cool, bright day | 40 °C | 416 W | 689 W | 95.7% of rated power |
| Typical summer roof | 55 °C | 397 W | 657 W | 91.3% of rated power |
| Hot roof | 70 °C | 378 W | 626 W | 87.0% of rated power |


## Against the whole database


| Measure | ASTRO N5s CHSM54N-HC-435W | CHSM66N(DG)/F-BH-720 | Out of | Note |
| --- | --- | --- | --- | --- |
| Efficiency | #5,100 | #1,306 | 14,005 | CHSM66N(DG)/F-BH-720 leads by 3,794 places |
| Power density | #5,150 | #1,347 | 14,005 | CHSM66N(DG)/F-BH-720 leads by 3,803 places |
| Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database |
| Weight | #2,656 | #6,459 | 14,005 | ASTRO N5s CHSM54N-HC-435W leads by 3,803 places |
| Warranty | #21 | #21 | 14,005 | Tied - the same position in the database |
| Overall | #9,115 | #339 | 14,005 | CHSM66N(DG)/F-BH-720 leads by 8,776 places |


## Questions


### Which panel is better: Astronergy ASTRO N5s CHSM54N-HC-435W or Astronergy CHSM66N(DG)/F-BH-720?

According to our database: **Astronergy CHSM66N(DG)/F-BH-720** has higher module efficiency (**23.20%** vs **22.30%**). See the full spec comparison and 30-year energy simulation above for a complete picture.


### What is the efficiency of Astronergy ASTRO N5s CHSM54N-HC-435W and Astronergy CHSM66N(DG)/F-BH-720?

**Astronergy ASTRO N5s CHSM54N-HC-**435 W**** has a module efficiency of **22.30%**, while **Astronergy CHSM66N(DG)/F-BH-720** is **23.20%**. Higher efficiency means more electricity from the same roof area - useful when space is limited.


### What cell technology does Astronergy ASTRO N5s CHSM54N-HC-435W use vs Astronergy CHSM66N(DG)/F-BH-720?

**Astronergy ASTRO N5s CHSM54N-HC-**435 W**** uses **TOPCon** cells; **Astronergy CHSM66N(DG)/F-BH-720** uses **TOPCon**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells.


### What is the warranty on Astronergy ASTRO N5s CHSM54N-HC-435W and Astronergy CHSM66N(DG)/F-BH-720?

**Astronergy ASTRO N5s CHSM54N-HC-**435 W**** has a **30 years** power warranty; **Astronergy CHSM66N(DG)/F-BH-720** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter.


### Are Astronergy ASTRO N5s CHSM54N-HC-435W and Astronergy CHSM66N(DG)/F-BH-720 bifacial panels?

**Astronergy CHSM66N(DG)/F-BH-720** is bifacial (captures light from both faces); **Astronergy ASTRO N5s CHSM54N-HC-**435 W**** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.


## Related comparisons

- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-445](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-445) - 4 differences, the largest is module efficiency
- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-445W](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-445w) - 3 differences, the largest is module efficiency
- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy ASTRO N5s CHSM54N-HC-445W](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-astro-n5s-chsm54n-hc-445w) - 3 differences, the largest is module efficiency
- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-440](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-440) - 2 differences, the largest is cell technology
- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-440W](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-440w) - One difference: module efficiency
- [Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N(BL)-HC 440W](https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-bl-hc-440w) - One difference: module efficiency


---

Source: https://comparepv.com/compare/astronergy-astro-n5s-chsm54n-hc-435w/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-720

Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.