--- title: "Solarwatt Panel classic AM 2.0 pure 400 Wp 400W Solar Panel - Specs & Review | ComparePV" description: "Solarwatt Panel classic AM 2.0 pure 400 Wp 400W solar panel. Specs: 20.70% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/solarwatt-panel-classic-am-2-0-pure-400-wp" updated: 2026-09-11 --- # Solarwatt Panel classic AM 2.0 pure 400 Wp Strong in heat, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Solarwatt - **Model:** Panel classic AM 2.0 pure 400 Wp - **Series:** Panel classic AM 2.0 pure - 35 mm - **Rated power:** 400 W - **Cell technology:** PERC ## 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 | 20.70% | 20.60% | Typical | 10,764 | | Power density | 206.5 | 206.2 | Typical | 10,990 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 10% | 8,545 | | Weight (kg) | 19.7 kg | 22.0 kg | Strong - top 11% | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.70% | 20.60% | Typical | 10,764 | | Power density | 206.5 | 206.2 | Typical | 10,990 | | Temperature coefficient | -0.330 | -0.350 | Strong - top 10% | 8,545 | | Weight per kWp | 49.2 | 53.0 | Strong - top 11% | 2,821 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **-0.330 %/°C temperature coefficient** - Top 10% of the PERC 400-450 W segment, against a median of -0.350. - **49.2 kg per kWp** - Top 11% of the PERC 400-450 W segment, against a median of 53.0. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.70 % - **Voltage at Pmax (Vmp):** 30.40 V - **Current at Pmax (Imp):** 13.20 A - **Open-circuit voltage (Voc):** 37.20 V - **Short-circuit current (Isc):** 13.60 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.330 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 108 ### Physical - **Length:** 1708 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 19.7 kg - **Area:** 1.94 m2 - **Power density:** 206.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **Output after 30 years:** 327 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 10764 of 14005 | | Power density | 10990 of 14005 | | Temperature coefficient | 8545 of 14005 | | Weight | 2821 of 14005 | | Warranty | 9798 of 14005 | ## About this series Solarwatt Panel classic AM 2.0 pure - 35 mm panels are an advanced glass-foil solution that combines proven technology with German manufacturing precision. The use of high-efficiency **n-type monocrystalline cells** translates into significantly higher efficiency and better module performance in diffuse light conditions, which is crucial for the effectiveness of installations in the Polish climate zone. These modules stand out for their exceptional resistance to potential-induced degradation phenomena, ensuring stable energy production for decades without sharp power drops. Thanks to the use of a solid **35 mm thick frame**, the entire structure gains high mechanical rigidity, allowing for safe installation in locations exposed to extreme snow loads or strong winds. This is an ideal choice for homeowners and businesses looking for the perfect balance between innovation and reliability. The AM 2.0 pure series effectively addresses the issue of long-term investment profitability by offering an **above-average linear power warranty** that sets the brand apart from standard competition. They are also distinguished from other products by rigorous quality control and attention to construction details, resulting in **maximum fire safety** and durability of the entire PV system. Choosing this series guarantees peace of mind and predictable profits from your own solar power plant. ## Notable figures - Efficiency of 20.7% matches the \*\*PERC 400-450W\*\* median - At 206.5 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - At -0.33%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - 19.7 kg weight - 2.3 kg lighter than \*\*PERC 400-450W\*\* median (22.0 kg), reducing installation effort - Ranked #10764 out of 14005 panels for efficiency in the database ## Questions ### What warranty does the Solarwatt Panel classic AM 2.0 pure 35 mm come with? Solarwatt provides a 15-year product warranty and a 25-year linear power output warranty for this series. This means the manufacturer guarantees a predictable minimum energy yield for a full quarter century, while covering module defects for the first 15 years. This is one of the longer warranty packages available for glass-foil modules on the European market. ### Does the PERC technology in the Solarwatt classic AM 2.0 pure perform well under Poland's frequently overcast conditions? Yes. The PERC cells used in the classic AM 2.0 pure series deliver better efficiency under diffuse and low-irradiance conditions compared to standard BSF cells. In Poland, where overcast skies dominate much of the year, this translates into measurably higher annual energy yields. The 410 Wp peak output is achieved under full irradiance, but the module generates usable power under cloudy skies as well. ### How heavy is the Solarwatt classic AM 2.0 pure and is it suitable for a standard pitched roof? The module weighs approximately 19.7 kg and measures 1,708 x 1,134 mm. The 35 mm aluminum frame provides high mechanical rigidity, making it easy to handle on a rooftop and compatible with standard racking systems used in prosumer installations — whether on ceramic tiles or metal roofing common in Polish residential construction. ### Are Solarwatt classic AM 2.0 pure panels resistant to PID (Potential Induced Degradation)? Yes, the classic AM 2.0 pure series is engineered to resist PID. This is particularly important in string-inverter systems where higher DC voltages can accelerate cell degradation in modules lacking this protection. PID resistance ensures the panels maintain stable output power over decades, directly improving the long-term return on investment. ### What snow and wind loads can the Solarwatt classic AM 2.0 pure handle with its 35 mm frame? The thick 35 mm aluminum frame provides high structural rigidity and resistance to extreme weather. The panels are certified in accordance with European mechanical load standards, enabling safe installation in high-snow-load zones and areas exposed to strong winds. Exact static and dynamic load values are specified in the current manufacturer datasheet. ### What is the difference between the Solarwatt classic AM 2.0 pure and the black variant at the same wattage? The pure version features a standard silver aluminum frame and light-colored backsheet, which promotes slightly lower module operating temperatures. The black version has a black frame and black aesthetics preferred for rooftop installations where visual integration matters. Both variants share the same 410 Wp peak power rating and identical 15/25-year warranty structure. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Data-sheet-SOLARWATT-Panel-classic-AM-20-pure-35-mm-en-737f9e411820.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 | Cooler, +2.4 pp, +5 yr warranty | | [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, +2.4 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, +2.3 pp, +5 yr warranty | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +2.3 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +2.3 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, +2.3 pp, +5 yr warranty | | [Solarwatt SOLARWATT Panel classic AM 2.0 black - 35 mm (395 Wp variant)](https://comparepv.com/panel/solarwatt-solarwatt-panel-classic-am-2-0-black-35-mm-395-wp-variant) | 395 W | -0.3 pp | | [Solarwatt SOLARWATT Panel classic AM 2.0 pure - 35 mm (405 Wp variant)](https://comparepv.com/panel/solarwatt-solarwatt-panel-classic-am-2-0-pure-35-mm-405-wp-variant) | 405 W | Very close match | | [Solarwatt SOLARWATT Panel classic AM 2.0 pure - 35 mm (410 Wp variant)](https://comparepv.com/panel/solarwatt-solarwatt-panel-classic-am-2-0-pure-35-mm-410-wp-variant) | 410 W | +10 W, +0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +110 W, cooler, +4.3 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +95 W, cooler, +4.1 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +105 W, cooler, +4.0 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +90 W, cooler, +3.8 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +100 W, cooler, +3.8 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +100 W, cooler, +3.8 pp | --- Source: https://comparepv.com/panel/solarwatt-panel-classic-am-2-0-pure-400-wp Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.