--- title: "AE Solar AE MD-108BD 400W Solar Panel: Specs & Datasheet | ComparePV" description: "AE Solar AE MD-108BD 400W solar panel. Specs: 20.51% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/ae-solar-ae-md-108bd-400w" image: "https://comparepv.com/og/panel/ae-solar-ae-md-108bd-400w.png" updated: 2026-09-11 --- # AE Solar AE MD-108BD 400W Warranty pick, heavy for its output 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** AE Solar - **Model:** AE MD-108BD 400W - **Series:** AURORA MD-108BD - **Rated power:** 400 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.51% | 20.60% | Typical | 11,349 | | Power density | 205.1 | 206.2 | Typical | 11,378 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight (kg) | 23.5 kg | 22.0 kg | Weak - bottom 16% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.51% | 20.60% | Typical | 11,349 | | Power density | 205.1 | 206.2 | Typical | 11,378 | | Temperature coefficient | -0.350 | -0.350 | Typical | 10,489 | | Weight per kWp | 58.8 | 53.0 | Weak - bottom 16% | 11,965 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Strengths - **30 year performance warranty** - Top 17% of the PERC 400-450 W segment, against a median of 25 yrs. ### Watch out for - **58.8 kg per kWp** - Bottom 16% of the PERC 400-450 W segment, against a median of 53.0. - **Best for:** Residential, cold-climate and hot-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.51 % - **Voltage at Pmax (Vmp):** 31.35 V - **Current at Pmax (Imp):** 12.76 A - **Open-circuit voltage (Voc):** 37.69 V - **Short-circuit current (Isc):** 13.52 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.350 %/degC - **Temperature coefficient of Voc:** -0.275 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 - **Bifacial:** yes - **Bifacial gain:** 10.00 ### Physical - **Length:** 1721 mm - **Width:** 1133 mm - **Thickness:** 30 mm - **Weight:** 23.5 kg - **Area:** 1.95 m2 - **Power density:** 205.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 81.5 % - **First-year degradation:** 2.50 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 326 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11349 of 14129 | | Power density | 11378 of 14129 | | Temperature coefficient | 10489 of 14129 | | Weight | 11965 of 14129 | | Warranty | 21 of 14129 | ## Pros - **The only European Tier 1 BNEF manufacturer** - AE Solar (headquartered in Germany, founded in 2003) has been included in BNEF's Tier 1 list for the 16th consecutive quarter (Q1 2025) and ranked 18th out of 67 evaluated manufacturers in the BNEF Global PV Module Bankability 2024 report, making it the only European manufacturer in the ranking. This indicates a lower supply chain risk and geopolitical exposure compared to its Asian competitors (Aptos Solar, LEDVANCE OEM, Sunova). - **Kiwa PVEL Top Performer 2025** - The AURORA series has been recognized as a Top Performer in the independent Kiwa PVEL 2025 tests, confirming the durability and actual performance of the module under conditions deviating from Standard Test Conditions (STC) - which is particularly important when assessing technical risks in projects financed by banks. - **Efficiency of 21.28% - exceeding the performance of comparable companies** - The highest variant, AURORA MD-108BD, achieves an efficiency of 21.28%, slightly but measurably exceeding all three reference models (Aptos Solar DNA 108-Monofacial, LEDVANCE M395~415P54LM-BF-F3, Sunova TS-BG54 X), which are all at 21.25%. With a typical roof area of 30 m², the difference of 0.03% represents approximately 0.5-1 Watt per module. - **Bifacial glass-glass vs. monofacial comparison** - While the Aptos Solar DNA 108 direct comparison module is a monofacial module, the AURORA MD-108BD offers a bifacial glass-glass construction, generating additional power from reflected light (typical bifacial gain: 5-15% depending on the substrate albedo). The double-pane tempered glass also increases resistance to static discharge and fire. - **30-year warranty on power and product performance** - Both the product warranty and the power warranty are 30 years long, exceeding the industry standard of 25 years used by most Tier 1 manufacturers in this power range. AE Solar's bankability has increased from 26% (2023) to 50% (2024), which reduces the risk of warranty loss due to the manufacturer's financial difficulties. ## Cons - **P-type PERC: Lower temperature coefficient** - The MD-108BD series is based on P-type PERC cells with a temperature coefficient of -0.35%/°C. Modern N-type TOPCon modules, available in the same power and price range, achieve -0.30 to -0.32%/°C, which, at a cell temperature of 65°C (typical Polish summer), translates to a real increase in power losses of approximately 1-1.5% in peak season. P-type cells also exhibit a higher LID (light-induced degradation) effect compared to N-type cells. ## About this series The AE Solar AURORA MD-108BD series redefines energy efficiency standards through the use of advanced **N-type TOPCon cell technology**, which ensures a significantly lower degradation rate and higher efficiency compared to traditional solutions. A key differentiator of this line is the **bifacial glass-glass design**, which enables the generation of additional power from reflected light, practically solving the problem of low efficiency on cloudy days or at unfavorable angles of incidence. Thanks to the use of gallium-doped silicon, these modules exhibit near-zero LID effect, resulting in **stable power output for decades**. The double-tempered glass construction not only increases mechanical resistance to hail and snow loads but also guarantees the highest fire safety class, which is crucial for residential installations. Aurora MD-108BD is the choice for investors demanding uncompromising quality, as these panels handle high temperatures and micro-cracks better than standard monofacial modules. This is an ideal solution for modern photovoltaic systems where the priority is **maximizing yields from limited roof area** and long-term capital protection by minimizing the risk of technical failures. ## Notable figures - Efficiency of 20.5% matches the \*\*PERC 400-450W\*\* median - At 205.1 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - Temperature coefficient of -0.35%/°C matches the \*\*PERC 400-450W\*\* median - At 23.5 kg, this panel is 1.5 kg heavier than the \*\*PERC 400-450W\*\* median (22.0 kg) - more demanding for installation crews - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### What is the warranty on AE Solar AURORA MD-108BD panels? The AURORA MD-108BD series is covered by a 30-year product warranty and a 30-year performance warranty, which are among the longest industry standards. The performance warranty ensures that the panel will maintain at least 87.4% of its nominal output power after 30 years. AE Solar, the manufacturer, is a German-based company with Tier 1 status, which provides real protection for enforcing warranty claims. ### What advantages does the bidirectional design of the AURORA MD-108BD panels offer, and does it actually produce more energy? Yes, thanks to its glass-glass construction and a bifaciality factor of 70%, the panel generates additional energy from reflected light from the roof, ground, or snow. In practice, on a bright surface (e.g., a white membrane roof or light gravel), you can achieve 5 to 15% more energy per year compared to an identical single-sided module. This effect is particularly noticeable in freestanding installations and on flat roofs with adequate ground clearance. ### What is the weight of the AE Solar AURORA MD-108BD panel, and will a typical roof structure be able to support it? The AURORA MD-108BD module weighs 25.5 kg and has dimensions of 1721 x 1133 x 30 mm. The glass-glass construction is slightly heavier than standard panels with a rear foil, so it's advisable to conduct a roof load-bearing assessment before installation. When properly installed, the system complies with the standards for typical pitched roofs in Poland. However, for older buildings or wooden roofs, it is recommended to consult with a structural engineer. ### Do AURORA MD-108BD panels with PERC technology perform well on cloudy days and in Polish winters? PERC half-cut monocrystalline solar panels are characterized by higher sensitivity to diffuse radiation compared to older full-cell panels, meaning they generate relatively more energy on cloudy days. The tempered, double-sided glass can withstand snow loads of up to 5400 Pa and hail, making the AURORA MD-108BD series well-suited for Polish climatic conditions. The negative temperature coefficient also reduces power losses during hot summer days. ### Is AE Solar a reputable manufacturer, and what does the "Tier 1" status signify? AE Solar, based in Germany, is listed on Bloomberg NEF's Tier 1 list, which indicates that it has a strong financial position, its own production lines, and the ability to finance projects through banks. This Tier 1 status is particularly important for a 30-year investment horizon, as it increases the likelihood that the manufacturer will remain in business and honor warranties throughout the lifespan of the installation. ### What is the maximum power output of the AE Solar AURORA MD-108BD panel, and for what size of residential system is it sufficient? The top-end model in the series achieves 415 Wp with an efficiency of up to 21.28%. For a typical single-family home that consumes 4000-5000 kWh per year, it is usually sufficient to have 10-12 such modules (an installation of 4-5 kWp), occupying approximately 19-23 m² of roof space. The high power output per module allows for maximizing energy generation on a limited area, which is particularly important for smaller roofs with good solar exposure. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/ae-md-108bd-395w-415w-sc-11-5-ver25-9-1-228da07b4693.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +40 W, cooler, +2.6 pp | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, cooler, +2.5 pp | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +2.5 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, cooler, +2.5 pp | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, cooler, +2.5 pp | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +2.5 pp | | [AE Solar AE CMD-72BD 280W](https://comparepv.com/panel/ae-solar-ae-cmd-72bd-280w) | 280 W | -120 W, cooler, -6.2 pp | | [AE Solar AE CMD-72BD 285W](https://comparepv.com/panel/ae-solar-ae-cmd-72bd-285w) | 285 W | -115 W, cooler, -5.9 pp | | [AE Solar AE CMD-72BD 290W](https://comparepv.com/panel/ae-solar-ae-cmd-72bd-290w) | 290 W | -110 W, cooler, -5.6 pp | | [AE Solar AE CMD-72BD 295W](https://comparepv.com/panel/ae-solar-ae-cmd-72bd-295w) | 295 W | -105 W, cooler, -5.4 pp | | [AE Solar AE CMD-72BD 300W](https://comparepv.com/panel/ae-solar-ae-cmd-72bd-300w) | 300 W | -100 W, cooler, -5.1 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.2 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +105 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +4.0 pp | --- Source: https://comparepv.com/panel/ae-solar-ae-md-108bd-400w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.