--- title: "DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108NA-445W - Solar Panel Comparison | ComparePV" description: "Compare DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108NA-445W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108na-445w" updated: 2026-09-11 --- # DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108NA-445W 445W leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [DAS Solar DAS-DH108NA-440W](https://comparepv.com/panel/das-solar-das-dh108na-440w) | [DAS Solar DAS-DH108NA-445W](https://comparepv.com/panel/das-solar-das-dh108na-445w) | | Manufacturer | DAS Solar | DAS Solar | | Power | 440 Wp | 445 Wp | | Efficiency | 22.50 % | 22.80 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440W | 445W | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 22.80 % | +0.30 pp for 445W | ## Every compared parameter | Parameter | 440W | 445W | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 22.50 % | 22.80 % | | Power density | 225.3 Wp/m² | 227.9 Wp/m² | | Open-circuit voltage | 38.88 V | 39.12 V | | Voltage at max power | 33.26 V | 33.51 V | | Short-circuit current | 13.98 A | 14.03 A | | Current at max power | 13.23 A | 13.28 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 1722x1134x30 mm | 1722x1134x30 mm | | Module area | 1.953 m² | 1.953 m² | | Weight | 20.5 kg | 20.5 kg | | Weight per kWp | 46.6 kg/kWp | 46.1 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 | - | - | | 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 (-0.300 %/°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, 440W:** 14,763 kWh - **Cumulative output, 445W:** 14,931 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 440W | 445W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 420 W | 425 W | 95.5% of rated power | | Typical summer roof | 55 °C | 400 W | 405 W | 91.0% of rated power | | Hot roof | 70 °C | 381 W | 385 W | 86.5% of rated power | ## Against the whole database | Measure | 440W | 445W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,222 | #2,714 | 14,005 | 445W leads by 1,508 places | | Power density | #4,099 | #2,790 | 14,005 | 445W leads by 1,309 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #1,235 | #972 | 14,005 | 445W leads by 263 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #8,664 | #8,114 | 14,005 | 445W leads by 550 places | ## Questions ### Which panel is better: DAS Solar DAS-DH108NA-440W or DAS Solar DAS-DH108NA-445W? According to our database: **DAS Solar DAS-DH108NA-**445 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 DAS Solar DAS-DH108NA-440W and DAS Solar DAS-DH108NA-445W? **DAS Solar DAS-DH108NA-**440 W**** has a module efficiency of **22.50%**, while **DAS Solar DAS-DH108NA-**445 W**** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does DAS Solar DAS-DH108NA-440W use vs DAS Solar DAS-DH108NA-445W? **DAS Solar DAS-DH108NA-**440 W**** uses **TOPCon** cells; **DAS Solar DAS-DH108NA-**445 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 DAS Solar DAS-DH108NA-440W and DAS Solar DAS-DH108NA-445W? **DAS Solar DAS-DH108NA-**440 W**** has a **30 years** power warranty; **DAS Solar DAS-DH108NA-**445 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 DAS Solar DAS-DH108NA-440W and DAS Solar DAS-DH108NA-445W bifacial panels? Both **DAS Solar DAS-DH108NA-**440 W**** and **DAS Solar DAS-DH108NA-**445 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 - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108ND-460](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108nd-460) - 8 differences, the largest is product warranty - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108ND-455](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108nd-455) - 9 differences, the largest is product warranty - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108ND-450](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108nd-450) - 10 differences, the largest is module efficiency - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108ND-445](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108nd-445) - 10 differences, the largest is module efficiency - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108ND-440](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108nd-440) - 10 differences, the largest is module efficiency - [DAS Solar DAS-DH108NA-440W vs DAS Solar DAS-DH108NA-435](https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108na-435) - 2 differences, the largest is product warranty --- Source: https://comparepv.com/compare/das-solar-das-dh108na-440w/das-solar-das-dh108na-445w 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.