--- title: "AE Solar AE MD-144BD-540 vs AE Solar AE MD-144BD-550 - Solar Panel Comparison | ComparePV" description: "Compare AE Solar AE MD-144BD-540 vs AE Solar AE MD-144BD-550 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-ae-md-144bd-550" updated: 2026-09-11 --- # AE Solar AE MD-144BD-540 vs AE Solar AE MD-144BD-550 550 leads on the differences that matter The largest is module efficiency: 0.39 pp more efficient. 15 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [AE Solar AE MD-144BD-540](https://comparepv.com/panel/ae-solar-ae-md-144bd-540) | [AE Solar AE MD-144BD-550](https://comparepv.com/panel/ae-solar-ae-md-144bd-550) | | Manufacturer | AE Solar | AE Solar | | Power | 540 Wp | 550 Wp | | Efficiency | 20.92 % | 21.31 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 540 | 550 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.92 % | 21.31 % | +0.39 pp for 550 | | Power density | 209.2 Wp/m² | 213.1 Wp/m² | +3.9 Wp/m² for 550 | | Rated power | 540 Wp | 550 Wp | +10 W for 550 | | Open-circuit voltage | 49.90 V | 51.44 V | 1.54 V apart | ## Every compared parameter | Parameter | 540 | 550 | | --- | --- | --- | | Rated power | 540 Wp | 550 Wp | | Module efficiency | 20.92 % | 21.31 % | | Power density | 209.2 Wp/m² | 213.1 Wp/m² | | Open-circuit voltage | 49.90 V | 51.44 V | | Voltage at max power | 42.15 V | 42.57 V | | Short-circuit current | 13.57 A | 13.67 A | | Current at max power | 12.81 A | 12.92 A | | Temperature coefficient | -0.350 %/°C | -0.350 %/°C | | Dimensions | 2278x1133x30 mm | 2278x1133x30 mm | | Module area | 2.581 m² | 2.581 m² | | Weight | 31.0 kg | 31.0 kg | | Weight per kWp | 57.4 kg/kWp | 56.4 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.55 %/yr | 0.55 %/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 (-0.350 %/°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, 540:** 17,404 kWh - **Cumulative output, 550:** 17,726 kWh - **Gap:** 322 kWh ## Output when hot | Condition | Cell temperature | 540 | 550 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 540 W | 550 W | 100.0% of rated power | | Cool, bright day | 40 °C | 512 W | 521 W | 94.8% of rated power | | Typical summer roof | 55 °C | 483 W | 492 W | 89.5% of rated power | | Hot roof | 70 °C | 455 W | 463 W | 84.2% of rated power | ## Against the whole database | Measure | 540 | 550 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #10,014 | #8,503 | 14,005 | 550 leads by 1,511 places | | Power density | #10,065 | #8,474 | 14,005 | 550 leads by 1,591 places | | Heat behaviour | #10,419 | #10,419 | 14,005 | Tied - the same position in the database | | Weight | #11,198 | #10,606 | 14,005 | 550 leads by 592 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #7,151 | #6,280 | 14,005 | 550 leads by 871 places | ## Questions ### Which panel is better: AE Solar AE MD-144BD-540 or AE Solar AE MD-144BD-550? According to our database: **AE Solar AE MD-144BD-550** has higher module efficiency (**21.31%** vs **20.92%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AE Solar AE MD-144BD-540 and AE Solar AE MD-144BD-550? **AE Solar AE MD-144BD-540** has a module efficiency of **20.92%**, while **AE Solar AE MD-144BD-550** is **21.31%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AE Solar AE MD-144BD-540 use vs AE Solar AE MD-144BD-550? **AE Solar AE MD-144BD-540** uses **PERC** cells; **AE Solar AE MD-144BD-550** 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 AE Solar AE MD-144BD-540 and AE Solar AE MD-144BD-550? **AE Solar AE MD-144BD-540** has a **30 years** power warranty; **AE Solar AE MD-144BD-550** 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 AE Solar AE MD-144BD-540 and AE Solar AE MD-144BD-550 bifacial panels? Both **AE Solar AE MD-144BD-540** and **AE Solar AE MD-144BD-550** 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 - [AE Solar AE MD-144BD-540 vs AE Solar MD-144BS-550](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-md-144bs-550) - 7 differences, the largest is weight - [AE Solar AE MD-144BD-540 vs AE Solar MD-144BS-550W](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-md-144bs-550w) - 6 differences, the largest is weight - [AE Solar AE MD-144BD-540 vs AE Solar MD-144BS-545](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-md-144bs-545) - 4 differences, the largest is weight - [AE Solar AE MD-144BD-540 vs AE Solar AE MD-144BD-545](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-ae-md-144bd-545) - One difference: module efficiency - [AE Solar AE MD-144BD-540 vs AE Solar MD-144BS-545W](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-md-144bs-545w) - 3 differences, the largest is weight - [AE Solar AE MD-144BD-540 vs AE Solar MD-144BS-540](https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-md-144bs-540) - 3 differences, the largest is weight --- Source: https://comparepv.com/compare/ae-solar-ae-md-144bd-540/ae-solar-ae-md-144bd-550 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.