--- title: "Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W - Solar Panel Comparison | ComparePV" description: "Compare Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm54rns-dg-blh-f-bh-455w" updated: 2026-09-11 --- # Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W 455W leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W](https://comparepv.com/panel/astronergy-chsm54rns-dg-blh-f-bh-450w) | [Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W](https://comparepv.com/panel/astronergy-chsm54rns-dg-blh-f-bh-455w) | | Manufacturer | Astronergy | Astronergy | | Power | 450 Wp | 455 Wp | | Efficiency | 22.50 % | 22.80 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 450W | 455W | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 22.80 % | +0.30 pp for 455W | ## Every compared parameter | Parameter | 450W | 455W | | --- | --- | --- | | Rated power | 450 Wp | 455 Wp | | Module efficiency | 22.50 % | 22.80 % | | Power density | 225.2 Wp/m² | 227.7 Wp/m² | | Open-circuit voltage | 39.40 V | 39.60 V | | Voltage at max power | 33.39 V | 33.56 V | | Short-circuit current | 14.28 A | 14.36 A | | Current at max power | 13.48 A | 13.56 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 21.5 kg | 21.5 kg | | Weight per kWp | 47.8 kg/kWp | 47.3 kg/kWp | | Product warranty | 25 yrs | 25 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 | 108 | | 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, 450W:** 15,098 kWh - **Cumulative output, 455W:** 15,266 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 450W | 455W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 455 W | 100.0% of rated power | | Cool, bright day | 40 °C | 430 W | 435 W | 95.7% of rated power | | Typical summer roof | 55 °C | 411 W | 415 W | 91.3% of rated power | | Hot roof | 70 °C | 391 W | 396 W | 87.0% of rated power | ## Against the whole database | Measure | 450W | 455W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #2,714 | 14,005 | 455W leads by 1,508 places | | Power density | #4,225 | #2,888 | 14,005 | 455W leads by 1,337 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #1,891 | #1,601 | 14,005 | 455W leads by 290 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #6,062 | #5,539 | 14,005 | 455W leads by 523 places | ## Questions ### Which panel is better: Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W or Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W? According to our database: **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**455 W**** has higher module efficiency (**22.80%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W? **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**450 W**** has a module efficiency of **22.50%**, while **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**455 W**** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W use vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W? **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**450 W**** uses **TOPCon** cells; **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**455 W**** 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 CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W? **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**450 W**** has a **30 years** power warranty; **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**455 W**** 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 CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W bifacial panels? Both **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**450 W**** and **Astronergy CHSM54RNs(DG)(BLH)/F-BH-**455 W**** 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 CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-460W](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm54rns-dg-blh-f-bh-460w) - 3 differences, the largest is module efficiency - [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm54rns-dg-blh-f-bh-445w) - One difference: module efficiency - [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-440W](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm54rns-dg-blh-f-bh-440w) - 3 differences, the largest is module efficiency - [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM66N(DG)/F-BH-735](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm66n-dg-f-bh-735) - 13 differences, the largest is module efficiency - [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM66N(DG)/F-BH-730](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-730) - 13 differences, the largest is module efficiency - [Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM66N(DG)/F-BH-725](https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chint-new-energy-technology-co-ltd-chsm66n-dg-f-bh-725) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/astronergy-chsm54rns-dg-blh-f-bh-450w/astronergy-chsm54rns-dg-blh-f-bh-455w 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.