--- title: "Astronergy CHSM54N-HC-425W vs Astronergy CHSM66N(DG)/F-BH-735 - Solar Panel Comparison | ComparePV" description: "Compare Astronergy CHSM54N-HC-425W vs Astronergy CHSM66N(DG)/F-BH-735 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chsm66n-dg-f-bh-735" updated: 2026-09-11 --- # Astronergy CHSM54N-HC-425W vs Astronergy CHSM66N(DG)/F-BH-735 CHSM66N(DG)/F-BH-735 leads on the differences that matter The largest is module efficiency: 1.90 pp more efficient. 7 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Astronergy CHSM54N-HC-425W](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w) | [Astronergy CHSM66N(DG)/F-BH-735](https://comparepv.com/panel/astronergy-chsm66n-dg-f-bh-735) | | Manufacturer | Astronergy | Astronergy | | Power | 425 Wp | 735 Wp | | Efficiency | 21.80 % | 23.70 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | CHSM54N-HC-425W | CHSM66N(DG)/F-BH-735 | Difference | | --- | --- | --- | --- | | Module efficiency | 21.80 % | 23.70 % | +1.90 pp for CHSM66N(DG)/F-BH-735 | | Rated power | 425 Wp | 735 Wp | +310 W for CHSM66N(DG)/F-BH-735 | | Power density | 217.6 Wp/m² | 236.6 Wp/m² | +19.0 Wp/m² for CHSM66N(DG)/F-BH-735 | | Weight | 21.3 kg | 38.0 kg | -16.7 kg for CHSM54N-HC-425W | | Open-circuit voltage | 38.20 V | 49.77 V | 11.57 V apart | | Short-circuit current | 13.98 A | 18.72 A | 4.74 A apart | | Module area | 1.953 m² | 3.106 m² | 1.154 m² apart | | Voltage at max power | 32.10 V | 41.41 V | 9.31 V apart | | Current at max power | 13.24 A | 17.75 A | 4.51 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 | CHSM54N-HC-425W | CHSM66N(DG)/F-BH-735 | | --- | --- | --- | | Rated power | 425 Wp | 735 Wp | | Module efficiency | 21.80 % | 23.70 % | | Power density | 217.6 Wp/m² | 236.6 Wp/m² | | Open-circuit voltage | 38.20 V | 49.77 V | | Voltage at max power | 32.10 V | 41.41 V | | Short-circuit current | 13.98 A | 18.72 A | | Current at max power | 13.24 A | 17.75 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 | 50.1 kg/kWp | 51.7 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, CHSM54N-HC-425W:** 14,260 kWh - **Cumulative output, CHSM66N(DG)/F-BH-735:** 24,661 kWh - **Gap:** 10,401 kWh ## Output when hot | Condition | Cell temperature | CHSM54N-HC-425W | CHSM66N(DG)/F-BH-735 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 425 W | 735 W | 100.0% of rated power | | Cool, bright day | 40 °C | 407 W | 703 W | 95.7% of rated power | | Typical summer roof | 55 °C | 388 W | 671 W | 91.3% of rated power | | Hot roof | 70 °C | 370 W | 639 W | 87.0% of rated power | ## Against the whole database | Measure | CHSM54N-HC-425W | CHSM66N(DG)/F-BH-735 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,022 | #517 | 14,005 | CHSM66N(DG)/F-BH-735 leads by 6,505 places | | Power density | #7,172 | #582 | 14,005 | CHSM66N(DG)/F-BH-735 leads by 6,590 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #3,619 | #5,081 | 14,005 | CHSM54N-HC-425W leads by 1,462 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #9,874 | #160 | 14,005 | CHSM66N(DG)/F-BH-735 leads by 9,714 places | ## Questions ### Which panel is better: Astronergy CHSM54N-HC-425W or Astronergy CHSM66N(DG)/F-BH-735? According to our database: **Astronergy CHSM66N(DG)/F-BH-735** has higher module efficiency (**23.70%** vs **21.80%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Astronergy CHSM54N-HC-425W and Astronergy CHSM66N(DG)/F-BH-735? **Astronergy CHSM54N-HC-**425 W**** has a module efficiency of **21.80%**, while **Astronergy CHSM66N(DG)/F-BH-735** is **23.70%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Astronergy CHSM54N-HC-425W use vs Astronergy CHSM66N(DG)/F-BH-735? **Astronergy CHSM54N-HC-**425 W**** uses **TOPCon** cells; **Astronergy CHSM66N(DG)/F-BH-735** 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 CHSM54N-HC-425W and Astronergy CHSM66N(DG)/F-BH-735? **Astronergy CHSM54N-HC-**425 W**** has a **30 years** power warranty; **Astronergy CHSM66N(DG)/F-BH-735** 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 CHSM54N-HC-425W and Astronergy CHSM66N(DG)/F-BH-735 bifacial panels? **Astronergy CHSM66N(DG)/F-BH-735** is bifacial (captures light from both faces); **Astronergy CHSM54N-HC-**425 W**** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Astronergy CHSM54N-HC-425W vs Astronergy CHSM54N-HC-445W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-445w) - 4 differences, the largest is module efficiency - [Astronergy CHSM54N-HC-425W vs Astronergy CHSM54N-HC-440W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-440w) - 3 differences, the largest is module efficiency - [Astronergy CHSM54N-HC-425W vs Astronergy CHSM54N-HC-435W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-435w) - 3 differences, the largest is module efficiency - [Astronergy CHSM54N-HC-425W vs Astronergy CHSM54N-HC-430W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-430w) - One difference: module efficiency - [Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-730](https://comparepv.com/compare/astronergy-chsm66n-dg-f-bh-735/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-730) - One difference: module efficiency - [Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-725](https://comparepv.com/compare/astronergy-chsm66n-dg-f-bh-735/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-725) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm54n-hc-425w/astronergy-chsm66n-dg-f-bh-735 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.