--- title: "DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-445 - Solar Panel Comparison | ComparePV" description: "Compare DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-445 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-445" updated: 2026-09-11 --- # DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-445 445 leads on the differences that matter The largest is module efficiency: 0.25 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [DAH Solar DHN-48Z16/DG(BW)-440](https://comparepv.com/panel/dah-dhn-48z16-dg-bw-440) | [DAH Solar DHN-48Z16/DG(BW)-445](https://comparepv.com/panel/dah-dhn-48z16-dg-bw-445) | | Manufacturer | DAH Solar | DAH Solar | | Power | 440 Wp | 445 Wp | | Efficiency | 22.02 % | 22.27 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440 | 445 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.02 % | 22.27 % | +0.25 pp for 445 | ## Every compared parameter | Parameter | 440 | 445 | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 22.02 % | 22.27 % | | Power density | 220.2 Wp/m² | 222.7 Wp/m² | | Open-circuit voltage | 35.60 V | 35.80 V | | Voltage at max power | 30.20 V | 30.40 V | | Short-circuit current | 15.52 A | 15.58 A | | Current at max power | 14.57 A | 14.64 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 23.9 kg | 23.9 kg | | Weight per kWp | 54.3 kg/kWp | 53.7 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 | 96 | 96 | | 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, 440:** 14,763 kWh - **Cumulative output, 445:** 14,931 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 440 | 445 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 421 W | 426 W | 95.7% of rated power | | Typical summer roof | 55 °C | 402 W | 406 W | 91.3% of rated power | | Hot roof | 70 °C | 383 W | 387 W | 87.0% of rated power | ## Against the whole database | Measure | 440 | 445 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #6,329 | #5,481 | 14,005 | 445 leads by 848 places | | Power density | #6,328 | #5,302 | 14,005 | 445 leads by 1,026 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #8,576 | #7,725 | 14,005 | 445 leads by 851 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,188 | #6,695 | 14,005 | 445 leads by 493 places | ## Questions ### Which panel is better: DAH Solar DHN-48Z16/DG(BW)-440 or DAH Solar DHN-48Z16/DG(BW)-445? According to our database: **DAH Solar DHN-48Z16/DG(BW)-445** has higher module efficiency (**22.27%** vs **22.02%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-445? **DAH Solar DHN-48Z16/DG(BW)-440** has a module efficiency of **22.02%**, while **DAH Solar DHN-48Z16/DG(BW)-445** is **22.27%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does DAH Solar DHN-48Z16/DG(BW)-440 use vs DAH Solar DHN-48Z16/DG(BW)-445? **DAH Solar DHN-48Z16/DG(BW)-440** uses **TOPCon** cells; **DAH Solar DHN-48Z16/DG(BW)-445** 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 DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-445? **DAH Solar DHN-48Z16/DG(BW)-440** has a **30 years** power warranty; **DAH Solar DHN-48Z16/DG(BW)-445** 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 DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-445 bifacial panels? Both **DAH Solar DHN-48Z16/DG(BW)-440** and **DAH Solar DHN-48Z16/DG(BW)-445** 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 - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-455](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-455) - 3 differences, the largest is module efficiency - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-450](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-450) - 3 differences, the largest is module efficiency - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-435](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-435) - One difference: module efficiency - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-430](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-430) - 3 differences, the largest is module efficiency - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-425](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-425) - 3 differences, the largest is module efficiency - [DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-66Y18/DG-725](https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-66y18-dg-725) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/dah-dhn-48z16-dg-bw-440/dah-dhn-48z16-dg-bw-445 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.