--- title: "Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-MF26-450W - Solar Panel Comparison | ComparePV" description: "Compare Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-MF26-450W 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-mf26-445w/aptos-solar-dna-144-mf26-450w" updated: 2026-09-11 --- # Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-MF26-450W 450W 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-MF26-445W](https://comparepv.com/panel/aptos-solar-dna-144-mf26-445w) | [Aptos Solar DNA-144-MF26-450W](https://comparepv.com/panel/aptos-solar-dna-144-mf26-450w) | | Manufacturer | Aptos Solar | Aptos Solar | | Power | 445 Wp | 450 Wp | | Efficiency | 19.98 % | 20.21 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 445W | 450W | Difference | | --- | --- | --- | --- | | Module efficiency | 19.98 % | 20.21 % | +0.23 pp for 450W | ## Every compared parameter | Parameter | 445W | 450W | | --- | --- | --- | | Rated power | 445 Wp | 450 Wp | | Module efficiency | 19.98 % | 20.21 % | | Power density | 204.4 Wp/m² | 206.7 Wp/m² | | Open-circuit voltage | 49.70 V | 49.90 V | | Voltage at max power | 40.80 V | 41.00 V | | Short-circuit current | 11.26 A | 11.33 A | | Current at max power | 10.67 A | 10.74 A | | Temperature coefficient | -0.380 %/°C | -0.380 %/°C | | Dimensions | 2095x1039x40 mm | 2095x1039x40 mm | | Module area | 2.177 m² | 2.177 m² | | Weight | 24.1 kg | 24.1 kg | | Weight per kWp | 54.2 kg/kWp | 53.6 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 | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.380 %/°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, 445W:** 14,445 kWh - **Cumulative output, 450W:** 14,608 kWh - **Gap:** 163 kWh ## Output when hot | Condition | Cell temperature | 445W | 450W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 445 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 420 W | 424 W | 94.3% of rated power | | Typical summer roof | 55 °C | 394 W | 399 W | 88.6% of rated power | | Hot roof | 70 °C | 369 W | 373 W | 82.9% of rated power | ## Against the whole database | Measure | 445W | 450W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #12,293 | #11,945 | 14,005 | 450W leads by 348 places | | Power density | #11,529 | #10,918 | 14,005 | 450W leads by 611 places | | Heat behaviour | #13,397 | #13,397 | 14,005 | Tied - the same position in the database | | Weight | #8,367 | #7,554 | 14,005 | 450W leads by 813 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #8,463 | #7,964 | 14,005 | 450W leads by 499 places | ## Questions ### Which panel is better: Aptos Solar DNA-144-MF26-445W or Aptos Solar DNA-144-MF26-450W? According to our database: **Aptos Solar DNA-144-MF26-**450 W**** has higher module efficiency (**20.21%** vs **19.98%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Aptos Solar DNA-144-MF26-445W and Aptos Solar DNA-144-MF26-450W? **Aptos Solar DNA-144-MF26-**445 W**** has a module efficiency of **19.98%**, while **Aptos Solar DNA-144-MF26-**450 W**** is **20.21%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Aptos Solar DNA-144-MF26-445W use vs Aptos Solar DNA-144-MF26-450W? **Aptos Solar DNA-144-MF26-**445 W**** uses **PERC** cells; **Aptos Solar DNA-144-MF26-**450 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-MF26-445W and Aptos Solar DNA-144-MF26-450W? **Aptos Solar DNA-144-MF26-**445 W**** has a **30 years** power warranty; **Aptos Solar DNA-144-MF26-**450 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. ## Related comparisons - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-BF10-550W-DG](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-144-bf10-550w-dg) - 12 differences, the largest is module efficiency - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-BF10-545W-DG](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-144-bf10-545w-dg) - 12 differences, the largest is module efficiency - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-144-BF10-540W-DG](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-144-bf10-540w-dg) - 12 differences, the largest is module efficiency - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-120-MF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-120-mf10-460w) - 9 differences, the largest is module efficiency - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-120-BF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-120-bf10-460w) - 13 differences, the largest is module efficiency - [Aptos Solar DNA-144-MF26-445W vs Aptos Solar DNA-120-MF10-455W](https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-120-mf10-455w) - 9 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/aptos-solar-dna-144-mf26-445w/aptos-solar-dna-144-mf26-450w 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.