--- title: "AE Solar MD-120BD-440 vs AE Solar MD-120BD-445 - Solar Panel Comparison | ComparePV" description: "Compare AE Solar MD-120BD-440 vs AE Solar MD-120BD-445 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-md-120bd-440/ae-solar-md-120bd-445" image: "https://comparepv.com/og/compare/panels/ae-solar-md-120bd-440/ae-solar-md-120bd-445.png" updated: 2026-09-11 --- # AE Solar MD-120BD-440 vs AE Solar MD-120BD-445 445 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 | [AE Solar MD-120BD-440](https://comparepv.com/panel/ae-solar-md-120bd-440) | [AE Solar MD-120BD-445](https://comparepv.com/panel/ae-solar-md-120bd-445) | | Manufacturer | AE Solar | AE Solar | | Power | 440 Wp | 445 Wp | | Efficiency | 20.42 % | 20.65 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440 | 445 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.42 % | 20.65 % | +0.23 pp for 445 | ## Every compared parameter | Parameter | 440 | 445 | | --- | --- | --- | | Rated power | 440 Wp | 445 Wp | | Module efficiency | 20.42 % | 20.65 % | | Power density | 204.2 Wp/m² | 206.5 Wp/m² | | Open-circuit voltage | 41.35 V | 41.66 V | | Voltage at max power | 34.62 V | 34.87 V | | Short-circuit current | 13.47 A | 13.52 A | | Current at max power | 12.71 A | 12.76 A | | Temperature coefficient | -0.350 %/°C | -0.350 %/°C | | Dimensions | 1902x1133x30 mm | 1902x1133x30 mm | | Module area | 2.155 m² | 2.155 m² | | Weight | 25.5 kg | 25.5 kg | | Weight per kWp | 58.0 kg/kWp | 57.3 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 | 120 | 120 | | 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, 440:** 14,181 kWh - **Cumulative output, 445:** 14,342 kWh - **Gap:** 161 kWh ## Output when hot | Condition | Cell temperature | 440 | 445 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 417 W | 422 W | 94.8% of rated power | | Typical summer roof | 55 °C | 394 W | 398 W | 89.5% of rated power | | Hot roof | 70 °C | 371 W | 375 W | 84.2% of rated power | ## Against the whole database | Measure | 440 | 445 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #11,656 | #11,092 | 14,129 | 445 leads by 564 places | | Power density | #11,667 | #11,071 | 14,129 | 445 leads by 596 places | | Heat behaviour | #10,489 | #10,489 | 14,129 | Tied - the same position in the database | | Weight | #11,584 | #11,246 | 14,129 | 445 leads by 338 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #10,689 | #10,433 | 14,129 | 445 leads by 256 places | ## Questions ### Which panel is better: AE Solar MD-120BD-440 or AE Solar MD-120BD-445? According to our database: **AE Solar MD-120BD-445** has higher module efficiency (**20.65%** vs **20.42%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of AE Solar MD-120BD-440 and AE Solar MD-120BD-445? **AE Solar MD-120BD-440** has a module efficiency of **20.42%**, while **AE Solar MD-120BD-445** is **20.65%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does AE Solar MD-120BD-440 use vs AE Solar MD-120BD-445? **AE Solar MD-120BD-440** uses **PERC** cells; **AE Solar MD-120BD-445** 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 MD-120BD-440 and AE Solar MD-120BD-445? **AE Solar MD-120BD-440** has a **30 years** power warranty; **AE Solar MD-120BD-445** 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 MD-120BD-440 and AE Solar MD-120BD-445 bifacial panels? Both **AE Solar MD-120BD-440** and **AE Solar MD-120BD-445** 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 MD-120BD-440 vs AE Solar ME-132BD-660](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-me-132bd-660) - 12 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar AE ME-132 660W](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-ae-me-132-660w) - 15 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar AE ME-132BD-660](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-ae-me-132bd-660) - 13 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar AE ME-132-660](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-ae-me-132-660) - 15 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar ME-132-660](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-me-132-660) - 14 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar ME-132BD-655](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-me-132bd-655) - 12 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-md-120bd-445 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.