--- title: "Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF26-450W - Solar Panel Comparison | ComparePV" description: "Compare Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF26-450W 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-bf10-550w-dg/aptos-solar-dna-144-bf26-450w" image: "https://comparepv.com/og/compare/panels/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-144-bf26-450w.png" updated: 2026-09-11 --- # Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF26-450W 11 differences, and they point both ways The largest is rated power: 100 W more power. 8 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Aptos Solar DNA-144-BF10-550W-DG](https://comparepv.com/panel/aptos-solar-dna-144-bf10-550w-dg) | [Aptos Solar DNA-144-BF26-450W](https://comparepv.com/panel/aptos-solar-dna-144-bf26-450w) | | Manufacturer | Aptos Solar | Aptos Solar | | Power | 550 Wp | 450 Wp | | Efficiency | 21.29 % | 20.70 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | BF10-550W-DG | BF26-450W | Difference | | --- | --- | --- | --- | | Rated power | 550 Wp | 450 Wp | +100 W for BF10-550W-DG | | Module efficiency | 21.29 % | 20.70 % | +0.59 pp for BF10-550W-DG | | Weight | 32.3 kg | 24.1 kg | -8.2 kg for BF26-450W | | Short-circuit current | 13.99 A | 11.52 A | 2.47 A apart | | Module area | 2.583 m² | 2.174 m² | 0.410 m² apart | | Power density | 212.9 Wp/m² | 207.0 Wp/m² | +5.9 Wp/m² for BF10-550W-DG | | Weight per kWp | 58.7 kg/kWp | 53.6 kg/kWp | -5.2 kg/kWp for BF26-450W | | Temperature coefficient | -0.335 %/°C | -0.320 %/°C | +0.015 %/°C for BF26-450W | | Current at max power | 12.45 A | 10.93 A | 1.52 A apart | | Voltage at max power | 44.15 V | 41.20 V | 2.95 V apart | | Dimensions | 2278x1134x35 mm | 2094x1038x35 mm | 2278x1134x35 mm vs 2094x1038x35 mm | ## Every compared parameter | Parameter | BF10-550W-DG | BF26-450W | | --- | --- | --- | | Rated power | 550 Wp | 450 Wp | | Module efficiency | 21.29 % | 20.70 % | | Power density | 212.9 Wp/m² | 207.0 Wp/m² | | Open-circuit voltage | 49.80 V | 49.40 V | | Voltage at max power | 44.15 V | 41.20 V | | Short-circuit current | 13.99 A | 11.52 A | | Current at max power | 12.45 A | 10.93 A | | Temperature coefficient | -0.335 %/°C | -0.320 %/°C | | Dimensions | 2278x1134x35 mm | 2094x1038x35 mm | | Module area | 2.583 m² | 2.174 m² | | Weight | 32.3 kg | 24.1 kg | | Weight per kWp | 58.7 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 | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, BF10-550W-DG:** 17,859 kWh - **Cumulative output, BF26-450W:** 14,608 kWh - **Gap:** 3,251 kWh ## Output when hot | Condition | Cell temperature | BF10-550W-DG | BF26-450W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 550 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 522 W | 428 W | 95.0% of rated power | | Typical summer roof | 55 °C | 495 W | 407 W | 90.0% of rated power | | Hot roof | 70 °C | 467 W | 385 W | 84.9% of rated power | ## Against the whole database | Measure | BF10-550W-DG | BF26-450W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #8,776 | #10,842 | 14,129 | BF10-550W-DG leads by 2,066 places | | Power density | #8,563 | #10,902 | 14,129 | BF10-550W-DG leads by 2,339 places | | Heat behaviour | #8,821 | #8,376 | 14,129 | BF26-450W leads by 445 places | | Weight | #11,953 | #7,623 | 14,129 | BF26-450W leads by 4,330 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #3,289 | #7,413 | 14,129 | BF10-550W-DG leads by 4,124 places | ## Questions ### Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-144-BF26-450W? According to our database: **Aptos Solar DNA-144-BF10-**550 W**-DG** has higher module efficiency (**21.29%** vs **20.70%**); **Aptos Solar DNA-144-BF26-**450 W**** tolerates heat better (temp coeff **-0.320%/°C** vs **-0.335%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-144-BF26-450W? **Aptos Solar DNA-144-BF10-**550 W**-DG** has a module efficiency of **21.29%**, while **Aptos Solar DNA-144-BF26-**450 W**** is **20.70%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Aptos Solar DNA-144-BF10-550W-DG use vs Aptos Solar DNA-144-BF26-450W? **Aptos Solar DNA-144-BF10-**550 W**-DG** uses **PERC** cells; **Aptos Solar DNA-144-BF26-**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-BF10-550W-DG and Aptos Solar DNA-144-BF26-450W? **Aptos Solar DNA-144-BF10-**550 W**-DG** has a **30 years** power warranty; **Aptos Solar DNA-144-BF26-**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. ### Are Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-144-BF26-450W bifacial panels? Both **Aptos Solar DNA-144-BF10-**550 W**-DG** and **Aptos Solar DNA-144-BF26-**450 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-BF10-550W-DG vs Aptos Solar DNA-144-BF10-545W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-144-bf10-545w-dg) - One difference: module efficiency - [Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF10-540W-DG](https://comparepv.com/compare/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-144-bf10-540w-dg) - 3 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF26-450W vs Aptos Solar DNA-144-BF26-445W](https://comparepv.com/compare/aptos-solar-dna-144-bf26-450w/aptos-solar-dna-144-bf26-445w) - One difference: module efficiency - [Aptos Solar DNA-144-BF26-450W vs Aptos Solar DNA-144-BF26-440W](https://comparepv.com/compare/aptos-solar-dna-144-bf26-450w/aptos-solar-dna-144-bf26-440w) - 3 differences, the largest is module efficiency - [Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-MF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-120-mf10-460w) - 10 differences, the largest is rated power - [Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-BF10-460W](https://comparepv.com/compare/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-120-bf10-460w) - 10 differences, the largest is rated power --- Source: https://comparepv.com/compare/aptos-solar-dna-144-bf10-550w-dg/aptos-solar-dna-144-bf26-450w 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.