--- title: "Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM72N(DG)/F-BH 600 - Solar Panel Comparison | ComparePV" description: "Compare Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM72N(DG)/F-BH 600 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-chsm78n-dg-f-bh-640/astronergy-chsm72n-dg-f-bh-600" updated: 2026-09-11 --- # Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM72N(DG)/F-BH 600 9 differences, and they point both ways The largest is rated power: 40 W more power. 10 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Astronergy CHSM78N(DG)/F-BH-640](https://comparepv.com/panel/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640) | [Astronergy CHSM72N(DG)/F-BH 600](https://comparepv.com/panel/astronergy-chsm72n-dg-f-bh-600) | | Manufacturer | Astronergy | Astronergy | | Power | 640 Wp | 600 Wp | | Efficiency | 22.90 % | 23.20 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | CHSM78N(DG)/F-BH-640 | CHSM72N(DG)/F-BH 600 | Difference | | --- | --- | --- | --- | | Rated power | 640 Wp | 600 Wp | +40 W for CHSM78N(DG)/F-BH-640 | | Open-circuit voltage | 56.61 V | 52.10 V | 4.51 V apart | | Module area | 2.795 m² | 2.583 m² | 0.212 m² apart | | Weight | 34.7 kg | 32.1 kg | -2.6 kg for CHSM72N(DG)/F-BH 600 | | Module efficiency | 22.90 % | 23.20 % | +0.30 pp for CHSM72N(DG)/F-BH 600 | | Power density | 229.0 Wp/m² | 232.3 Wp/m² | +3.3 Wp/m² for CHSM72N(DG)/F-BH 600 | | Cell count | 156 | 144 | 12 cells apart | | Voltage at max power | 46.79 V | 43.78 V | 3.01 V apart | | Dimensions | 2465x1134x30 mm | 2278x1134x30 mm | 2465x1134x30 mm vs 2278x1134x30 mm | ## Every compared parameter | Parameter | CHSM78N(DG)/F-BH-640 | CHSM72N(DG)/F-BH 600 | | --- | --- | --- | | Rated power | 640 Wp | 600 Wp | | Module efficiency | 22.90 % | 23.20 % | | Power density | 229.0 Wp/m² | 232.3 Wp/m² | | Open-circuit voltage | 56.61 V | 52.10 V | | Voltage at max power | 46.79 V | 43.78 V | | Short-circuit current | 14.35 A | 14.61 A | | Current at max power | 13.68 A | 13.70 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 2465x1134x30 mm | 2278x1134x30 mm | | Module area | 2.795 m² | 2.583 m² | | Weight | 34.7 kg | 32.1 kg | | Weight per kWp | 54.2 kg/kWp | 53.5 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 | 156 | 144 | | Bifacial | Yes | 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, CHSM78N(DG)/F-BH-640:** 21,473 kWh - **Cumulative output, CHSM72N(DG)/F-BH 600:** 20,131 kWh - **Gap:** 1,342 kWh ## Output when hot | Condition | Cell temperature | CHSM78N(DG)/F-BH-640 | CHSM72N(DG)/F-BH 600 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 640 W | 600 W | 100.0% of rated power | | Cool, bright day | 40 °C | 612 W | 574 W | 95.7% of rated power | | Typical summer roof | 55 °C | 584 W | 548 W | 91.3% of rated power | | Hot roof | 70 °C | 556 W | 522 W | 87.0% of rated power | ## Against the whole database | Measure | CHSM78N(DG)/F-BH-640 | CHSM72N(DG)/F-BH 600 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,359 | #1,306 | 14,005 | CHSM72N(DG)/F-BH 600 leads by 1,053 places | | Power density | #2,389 | #1,252 | 14,005 | CHSM72N(DG)/F-BH 600 leads by 1,137 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #8,447 | #7,477 | 14,005 | CHSM72N(DG)/F-BH 600 leads by 970 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,704 | #2,413 | 14,005 | CHSM78N(DG)/F-BH-640 leads by 709 places | ## Questions ### Which panel is better: Astronergy CHSM78N(DG)/F-BH-640 or Astronergy CHSM72N(DG)/F-BH 600? According to our database: **Astronergy CHSM72N(DG)/F-BH 600** has higher module efficiency (**23.20%** vs **22.90%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Astronergy CHSM78N(DG)/F-BH-640 and Astronergy CHSM72N(DG)/F-BH 600? **Astronergy CHSM78N(DG)/F-BH-640** has a module efficiency of **22.90%**, while **Astronergy CHSM72N(DG)/F-BH 600** is **23.20%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Astronergy CHSM78N(DG)/F-BH-640 use vs Astronergy CHSM72N(DG)/F-BH 600? **Astronergy CHSM78N(DG)/F-BH-640** uses **TOPCon** cells; **Astronergy CHSM72N(DG)/F-BH 600** 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 CHSM78N(DG)/F-BH-640 and Astronergy CHSM72N(DG)/F-BH 600? **Astronergy CHSM78N(DG)/F-BH-640** has a **30 years** power warranty; **Astronergy CHSM72N(DG)/F-BH 600** 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 CHSM78N(DG)/F-BH-640 and Astronergy CHSM72N(DG)/F-BH 600 bifacial panels? Both **Astronergy CHSM78N(DG)/F-BH-640** and **Astronergy CHSM72N(DG)/F-BH 600** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH-650](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650) - 3 differences, the largest is module efficiency - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH 650W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-650w) - 4 differences, the largest is module efficiency - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH-650W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chsm78n-dg-f-bh-650w) - 3 differences, the largest is module efficiency - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH-645](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-645) - One difference: module efficiency - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH 645W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-645w) - 2 differences, the largest is module efficiency - [Astronergy CHSM78N(DG)/F-BH-640 vs Astronergy CHSM78N(DG)/F-BH-645W](https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chsm78n-dg-f-bh-645w) - One difference: module efficiency --- Source: https://comparepv.com/compare/astronergy-chint-new-energy-technology-co-ltd-chsm78n-dg-f-bh-640/astronergy-chsm72n-dg-f-bh-600 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.