--- title: "Waaree BiN-08-550 vs Waaree BiN-08-555 - Solar Panel Comparison | ComparePV" description: "Compare Waaree BiN-08-550 vs Waaree BiN-08-555 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/waaree-bin-08-550/waaree-bin-08-555" updated: 2026-09-11 --- # Waaree BiN-08-550 vs Waaree BiN-08-555 555 leads on the differences that matter The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Waaree BiN-08-550](https://comparepv.com/panel/waaree-bin-08-550) | [Waaree BiN-08-555](https://comparepv.com/panel/waaree-bin-08-555) | | Manufacturer | Waaree | Waaree | | Power | 550 Wp | 555 Wp | | Efficiency | 21.28 % | 21.48 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 550 | 555 | Difference | | --- | --- | --- | --- | | Module efficiency | 21.28 % | 21.48 % | +0.20 pp for 555 | ## Every compared parameter | Parameter | 550 | 555 | | --- | --- | --- | | Rated power | 550 Wp | 555 Wp | | Module efficiency | 21.28 % | 21.48 % | | Power density | 212.8 Wp/m² | 214.8 Wp/m² | | Open-circuit voltage | 50.30 V | 50.50 V | | Voltage at max power | 41.60 V | 41.80 V | | Short-circuit current | 13.99 A | 14.05 A | | Current at max power | 13.23 A | 13.28 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2279x1134x35 mm | 2279x1134x35 mm | | Module area | 2.584 m² | 2.584 m² | | Weight | 32.0 kg | 32.0 kg | | Weight per kWp | 58.2 kg/kWp | 57.7 kg/kWp | | Product warranty | 12 yrs | 12 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 | 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 (-0.300 %/°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, 550:** 18,454 kWh - **Cumulative output, 555:** 18,621 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | 550 | 555 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 550 W | 555 W | 100.0% of rated power | | Cool, bright day | 40 °C | 525 W | 530 W | 95.5% of rated power | | Typical summer roof | 55 °C | 501 W | 505 W | 91.0% of rated power | | Hot roof | 70 °C | 476 W | 480 W | 86.5% of rated power | ## Against the whole database | Measure | 550 | 555 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #8,795 | #8,152 | 14,005 | 555 leads by 643 places | | Power density | #8,643 | #8,148 | 14,005 | 555 leads by 495 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #11,595 | #11,340 | 14,005 | 555 leads by 255 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,029 | #6,600 | 14,005 | 555 leads by 429 places | ## Questions ### Which panel is better: Waaree BiN-08-550 or Waaree BiN-08-555? According to our database: **Waaree BiN-08-555** has higher module efficiency (**21.48%** vs **21.28%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Waaree BiN-08-550 and Waaree BiN-08-555? **Waaree BiN-08-550** has a module efficiency of **21.28%**, while **Waaree BiN-08-555** is **21.48%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Waaree BiN-08-550 use vs Waaree BiN-08-555? **Waaree BiN-08-550** uses **TOPCon** cells; **Waaree BiN-08-555** 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 Waaree BiN-08-550 and Waaree BiN-08-555? **Waaree BiN-08-550** has a **30 years** power warranty; **Waaree BiN-08-555** 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 Waaree BiN-08-550 and Waaree BiN-08-555 bifacial panels? Both **Waaree BiN-08-550** and **Waaree BiN-08-555** 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 - [Waaree BiN-08-550 vs Waaree BiN-08-560](https://comparepv.com/compare/waaree-bin-08-550/waaree-bin-08-560) - 3 differences, the largest is module efficiency - [Waaree BiN-08-550 vs Waaree BiN-08-545](https://comparepv.com/compare/waaree-bin-08-550/waaree-bin-08-545) - The same specification on paper - [Waaree BiN-08-550 vs Waaree BiH-11-730](https://comparepv.com/compare/waaree-bin-08-550/waaree-bih-11-730) - 13 differences, the largest is module efficiency - [Waaree BiN-08-550 vs Waaree BiH-11-725](https://comparepv.com/compare/waaree-bin-08-550/waaree-bih-11-725) - 13 differences, the largest is module efficiency - [Waaree BiN-08-550 vs Waaree BiH-11-720](https://comparepv.com/compare/waaree-bin-08-550/waaree-bih-11-720) - 13 differences, the largest is module efficiency - [Waaree BiN-08-550 vs Waaree BiH-11-715](https://comparepv.com/compare/waaree-bin-08-550/waaree-bih-11-715) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/waaree-bin-08-550/waaree-bin-08-555 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.