--- title: "Bisol BBO 500 vs Bisol BDO 450 - Solar Panel Comparison | ComparePV" description: "Compare Bisol BBO 500 vs Bisol BDO 450 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/bisol-bbo-500/bisol-bdo-450" updated: 2026-09-11 --- # Bisol BBO 500 vs Bisol BDO 450 8 differences, and they point both ways The largest is rated power: 50 W more power. 11 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Bisol BBO 500](https://comparepv.com/panel/bisol-bbo-500) | [Bisol BDO 450](https://comparepv.com/panel/bisol-bdo-450) | | Manufacturer | Bisol | Bisol | | Power | 500 Wp | 450 Wp | | Efficiency | 22.30 % | 22.50 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | BBO 500 | BDO 450 | Difference | | --- | --- | --- | --- | | Rated power | 500 Wp | 450 Wp | +50 W for BBO 500 | | Open-circuit voltage | 39.60 V | 35.30 V | 4.30 V apart | | Module area | 2.240 m² | 1.998 m² | 0.242 m² apart | | Weight | 23.5 kg | 21.0 kg | -2.5 kg for BDO 450 | | Module efficiency | 22.30 % | 22.50 % | +0.20 pp for BDO 450 | | Cell count | 108 | 96 | 12 cells apart | | Voltage at max power | 33.30 V | 29.60 V | 3.70 V apart | | Dimensions | 1975x1134x35 mm | 1762x1134x30 mm | 1975x1134x35 mm vs 1762x1134x30 mm | ## Every compared parameter | Parameter | BBO 500 | BDO 450 | | --- | --- | --- | | Rated power | 500 Wp | 450 Wp | | Module efficiency | 22.30 % | 22.50 % | | Power density | 223.2 Wp/m² | 225.2 Wp/m² | | Open-circuit voltage | 39.60 V | 35.30 V | | Voltage at max power | 33.30 V | 29.60 V | | Short-circuit current | 16.00 A | 16.10 A | | Current at max power | 15.00 A | 15.20 A | | Temperature coefficient | -0.290 %/°C | -0.290 %/°C | | Dimensions | 1975x1134x35 mm | 1762x1134x30 mm | | Module area | 2.240 m² | 1.998 m² | | Weight | 23.5 kg | 21.0 kg | | Weight per kWp | 47.0 kg/kWp | 46.7 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.31 %/yr | 0.31 %/yr | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 96 | | 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 (-0.290 %/°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, BBO 500:** 17,011 kWh - **Cumulative output, BDO 450:** 15,310 kWh - **Gap:** 1,701 kWh ## Output when hot | Condition | Cell temperature | BBO 500 | BDO 450 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 500 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 478 W | 430 W | 95.7% of rated power | | Typical summer roof | 55 °C | 457 W | 411 W | 91.3% of rated power | | Hot roof | 70 °C | 435 W | 391 W | 87.0% of rated power | ## Against the whole database | Measure | BBO 500 | BDO 450 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #5,100 | #4,222 | 14,005 | BDO 450 leads by 878 places | | Power density | #5,048 | #4,225 | 14,005 | BDO 450 leads by 823 places | | Heat behaviour | #2,165 | #2,165 | 14,005 | Tied - the same position in the database | | Weight | #1,450 | #1,258 | 14,005 | BDO 450 leads by 192 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,669 | #6,031 | 14,005 | BBO 500 leads by 1,362 places | ## Questions ### Which panel is better: Bisol BBO 500 or Bisol BDO 450? According to our database: **Bisol BDO 450** has higher module efficiency (**22.50%** vs **22.30%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Bisol BBO 500 and Bisol BDO 450? **Bisol BBO 500** has a module efficiency of **22.30%**, while **Bisol BDO 450** is **22.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Bisol BBO 500 use vs Bisol BDO 450? **Bisol BBO 500** uses **PERC** cells; **Bisol BDO 450** 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 Bisol BBO 500 and Bisol BDO 450? **Bisol BBO 500** has a **30 years** power warranty; **Bisol BDO 450** 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 - [Bisol BBO 500 vs Bisol BGO 580](https://comparepv.com/compare/bisol-bbo-500/bisol-bgo-580) - 11 differences, the largest is module efficiency - [Bisol BBO 500 vs Bisol BGO 570](https://comparepv.com/compare/bisol-bbo-500/bisol-bgo-570) - 10 differences, the largest is module efficiency - [Bisol BBO 500 vs Bisol BGO 560](https://comparepv.com/compare/bisol-bbo-500/bisol-bgo-560) - 10 differences, the largest is rated power - [Bisol BBO 500 vs Bisol BBO 520](https://comparepv.com/compare/bisol-bbo-500/bisol-bbo-520) - 5 differences, the largest is module efficiency - [Bisol BBO 500 vs Bisol BBO 510](https://comparepv.com/compare/bisol-bbo-500/bisol-bbo-510) - 3 differences, the largest is module efficiency - [Bisol BBO 500 vs Bisol BDO 460](https://comparepv.com/compare/bisol-bbo-500/bisol-bdo-460) - 10 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/bisol-bbo-500/bisol-bdo-450 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.