--- title: "AE Solar MD-120BD-440 vs AE Solar ME-132-660 - Solar Panel Comparison | ComparePV" description: "Compare AE Solar MD-120BD-440 vs AE Solar ME-132-660 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-me-132-660" updated: 2026-09-11 --- # AE Solar MD-120BD-440 vs AE Solar ME-132-660 ME-132-660 leads on the differences that matter The largest is module efficiency: 0.85 pp more efficient. 5 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 ME-132-660](https://comparepv.com/panel/ae-solar-me-132-660) | | Manufacturer | AE Solar | AE Solar | | Power | 440 Wp | 660 Wp | | Efficiency | 20.42 % | 21.27 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | MD-120BD-440 | ME-132-660 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.42 % | 21.27 % | +0.85 pp for ME-132-660 | | Rated power | 440 Wp | 660 Wp | +220 W for ME-132-660 | | Weight | 25.5 kg | 31.5 kg | -6.0 kg for MD-120BD-440 | | Weight per kWp | 58.0 kg/kWp | 47.7 kg/kWp | -10.2 kg/kWp for ME-132-660 | | Power density | 204.2 Wp/m² | 212.7 Wp/m² | +8.5 Wp/m² for ME-132-660 | | Open-circuit voltage | 41.35 V | 45.90 V | 4.55 V apart | | Short-circuit current | 13.47 A | 18.43 A | 4.96 A apart | | Module area | 2.155 m² | 3.103 m² | 0.948 m² apart | | Temperature coefficient | -0.350 %/°C | -0.340 %/°C | +0.010 %/°C for ME-132-660 | | Current at max power | 12.71 A | 17.46 A | 4.75 A apart | | Cell count | 120 | 132 | 12 cells apart | | Voltage at max power | 34.62 V | 37.80 V | 3.18 V apart | | Bifacial | Yes | No | Yes vs No | | Dimensions | 1902x1133x30 mm | 2383x1302x30 mm | 1902x1133x30 mm vs 2383x1302x30 mm | ## Every compared parameter | Parameter | MD-120BD-440 | ME-132-660 | | --- | --- | --- | | Rated power | 440 Wp | 660 Wp | | Module efficiency | 20.42 % | 21.27 % | | Power density | 204.2 Wp/m² | 212.7 Wp/m² | | Open-circuit voltage | 41.35 V | 45.90 V | | Voltage at max power | 34.62 V | 37.80 V | | Short-circuit current | 13.47 A | 18.43 A | | Current at max power | 12.71 A | 17.46 A | | Temperature coefficient | -0.350 %/°C | -0.340 %/°C | | Dimensions | 1902x1133x30 mm | 2383x1302x30 mm | | Module area | 2.155 m² | 3.103 m² | | Weight | 25.5 kg | 31.5 kg | | Weight per kWp | 58.0 kg/kWp | 47.7 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 | 132 | | Bifacial | Yes | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, MD-120BD-440:** 14,181 kWh - **Cumulative output, ME-132-660:** 21,271 kWh - **Gap:** 7,090 kWh ## Output when hot | Condition | Cell temperature | MD-120BD-440 | ME-132-660 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 660 W | 100.0% of rated power | | Cool, bright day | 40 °C | 417 W | 626 W | 94.8% of rated power | | Typical summer roof | 55 °C | 394 W | 593 W | 89.5% of rated power | | Hot roof | 70 °C | 371 W | 559 W | 84.2% of rated power | ## Against the whole database | Measure | MD-120BD-440 | ME-132-660 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #11,555 | #8,830 | 14,013 | ME-132-660 leads by 2,725 places | | Power density | #11,566 | #8,699 | 14,013 | ME-132-660 leads by 2,867 places | | Heat behaviour | #10,400 | #8,759 | 14,013 | ME-132-660 leads by 1,641 places | | Weight | #11,478 | #1,822 | 14,013 | ME-132-660 leads by 9,656 places | | Warranty | #21 | #21 | 14,013 | Tied - the same position in the database | | Overall | #10,595 | #2,441 | 14,013 | ME-132-660 leads by 8,154 places | ## Questions ### Which panel is better: AE Solar MD-120BD-440 or AE Solar ME-132-660? According to our database: **AE Solar ME-132-660** has higher module efficiency (**21.27%** vs **20.42%**); **AE Solar ME-132-660** tolerates heat better (temp coeff **-0.340%/°C** vs **-0.350%/°C**). 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 ME-132-660? **AE Solar MD-120BD-440** has a module efficiency of **20.42%**, while **AE Solar ME-132-660** is **21.27%**. 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 ME-132-660? **AE Solar MD-120BD-440** uses **PERC** cells; **AE Solar ME-132-660** 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 ME-132-660? **AE Solar MD-120BD-440** has a **30 years** power warranty; **AE Solar ME-132-660** 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 ME-132-660 bifacial panels? **AE Solar MD-120BD-440** is bifacial (captures light from both faces); **AE Solar ME-132-660** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## 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-132BD-655](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-me-132bd-655) - 12 differences, the largest is module efficiency - [AE Solar MD-120BD-440 vs AE Solar AE ME-132 655W](https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-ae-me-132-655w) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ae-solar-md-120bd-440/ae-solar-me-132-660 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.