--- title: "Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-445W - Solar Panel Comparison | ComparePV" description: "Compare Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-445W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf26-445w" image: "https://comparepv.com/og/compare/panels/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf26-445w.png" updated: 2026-09-11 --- # Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-445W 445W leads on the differences that matter The largest is module efficiency: 0.23 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Aptos Solar DNA-144-BF26-440W](https://comparepv.com/panel/aptos-solar-dna-144-bf26-440w) | [Aptos Solar DNA-144-BF26-445W](https://comparepv.com/panel/aptos-solar-dna-144-bf26-445w) | | Manufacturer | Aptos Solar | Aptos Solar | | Power | 440 Wp | 445 Wp | | Efficiency | 20.24 % | 20.47 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440W | 445W | Difference | | --- | --- | --- | --- | | Module efficiency | 20.24 % | 20.47 % | +0.23 pp for 445W | ## Every compared parameter | Parameter | 440W | 445W | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 20.24 % | 20.47 % | | Power density | 202.4 Wp/m² | 204.7 Wp/m² | | Open-circuit voltage | 49.00 V | 49.20 V | | Voltage at max power | 40.80 V | 41.00 V | | Short-circuit current | 11.36 A | 11.44 A | | Current at max power | 10.79 A | 10.86 A | | Temperature coefficient | -0.320 %/°C | -0.320 %/°C | | Dimensions | 2094x1038x35 mm | 2094x1038x35 mm | | Module area | 2.174 m² | 2.174 m² | | Weight | 24.1 kg | 24.1 kg | | Weight per kWp | 54.8 kg/kWp | 54.2 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.54 %/yr | 0.54 %/yr | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 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 (-0.320 %/°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:** 14,283 kWh - **Cumulative output, 445W:** 14,445 kWh - **Gap:** 162 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 | 419 W | 424 W | 95.2% of rated power | | Typical summer roof | 55 °C | 398 W | 402 W | 90.4% of rated power | | Hot roof | 70 °C | 377 W | 381 W | 85.6% of rated power | ## Against the whole database | Measure | 440W | 445W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #11,968 | #11,603 | 14,129 | 445W leads by 365 places | | Power density | #11,940 | #11,558 | 14,129 | 445W leads by 382 places | | Heat behaviour | #8,376 | #8,376 | 14,129 | Tied - the same position in the database | | Weight | #9,255 | #8,446 | 14,129 | 445W leads by 809 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #8,400 | #7,912 | 14,129 | 445W leads by 488 places | ## Questions ### Which panel is better: Aptos Solar DNA-144-BF26-440W or Aptos Solar DNA-144-BF26-445W? According to our database: **Aptos Solar DNA-144-BF26-**445 W**** has higher module efficiency (**20.47%** vs **20.24%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Aptos Solar DNA-144-BF26-440W and Aptos Solar DNA-144-BF26-445W? **Aptos Solar DNA-144-BF26-**440 W**** has a module efficiency of **20.24%**, while **Aptos Solar DNA-144-BF26-**445 W**** is **20.47%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Aptos Solar DNA-144-BF26-440W use vs Aptos Solar DNA-144-BF26-445W? **Aptos Solar DNA-144-BF26-**440 W**** uses **PERC** cells; **Aptos Solar DNA-144-BF26-**445 W**** uses **PERC**. 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 Aptos Solar DNA-144-BF26-440W and Aptos Solar DNA-144-BF26-445W? **Aptos Solar DNA-144-BF26-**440 W**** has a **30 years** power warranty; **Aptos Solar DNA-144-BF26-**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 Aptos Solar DNA-144-BF26-440W and Aptos Solar DNA-144-BF26-445W bifacial panels? Both **Aptos Solar DNA-144-BF26-**440 W**** and **Aptos Solar DNA-144-BF26-**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 - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF10-550W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf10-550w-dg) - 11 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF10-545W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf10-545w-dg) - 11 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF10-540W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf10-540w-dg) - 11 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-450W](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf26-450w) - 3 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-120-MF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-120-mf10-460w) - 11 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-120-BF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-120-bf10-460w) - 12 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/aptos-solar-dna-144-bf26-440w/aptos-solar-dna-144-bf26-445w 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.