--- title: "Solarwatt Panel vision GM 3.0 pure 380 Wp 380W Solar Panel - Specs & Review | ComparePV" description: "Solarwatt Panel vision GM 3.0 pure 380 Wp 380W solar panel. Specs: 20.40% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/solarwatt-panel-vision-gm-3-0-pure-380-wp" updated: 2026-09-11 --- # Solarwatt Panel vision GM 3.0 pure 380 Wp Efficiency leader, heavy for its output 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Solarwatt - **Model:** Panel vision GM 3.0 pure 380 Wp - **Series:** Panel vision GM 3.0 pure - **Rated power:** 380 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 380 W | 380 W | Typical | | | Module efficiency | 20.40% | 19.90% | Strong - top 12% | 11,598 | | Power density | 202.9 | 199.0 | Strong - top 16% | 11,780 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 15% | 8,778 | | Weight (kg) | 25.0 kg | 21.4 kg | Weak - bottom 11% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.40% | 19.90% | Strong - top 12% | 11,598 | | Power density | 202.9 | 199.0 | Strong - top 16% | 11,780 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 15% | 8,778 | | Weight per kWp | 65.8 | 55.8 | Weak - bottom 11% | 13,109 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 13% | 21 | ### Strengths - **20.40% module efficiency** - Top 12% of the PERC 350-400 W segment, against a median of 19.90%. - **30 year performance warranty** - Top 13% of the PERC 350-400 W segment, against a median of 25 yrs. - **-0.340 %/°C temperature coefficient** - Top 15% of the PERC 350-400 W segment, against a median of -0.350. ### Watch out for - **65.8 kg per kWp** - Bottom 11% of the PERC 350-400 W segment, against a median of 55.8. - **Best for:** Residential, commercial, shaded-installations and cold-climate. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 380 W - **Efficiency:** 20.40 % - **Voltage at Pmax (Vmp):** 35.30 V - **Current at Pmax (Imp):** 10.80 A - **Open-circuit voltage (Voc):** 41.60 V - **Short-circuit current (Isc):** 11.40 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 ### Physical - **Length:** 1780 mm - **Width:** 1052 mm - **Thickness:** 40 mm - **Weight:** 25.0 kg - **Area:** 1.87 m2 - **Power density:** 202.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 30 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.0 % - **Output after 30 years:** 342 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11598 of 14005 | | Power density | 11780 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 13109 of 14005 | | Warranty | 21 of 14005 | ## About this series Solarwatt Panel vision GM 3.0 pure is a series of glass-glass modules that sets new standards for durability in harsh environmental conditions. Thanks to the use of double-sided tempered glass, these panels are almost completely resistant to micro-cracks and potential-induced degradation, which directly translates into stable energy production for decades. The use of **bifacial cell technology** allows for additional power yield from reflected radiation, making this series exceptionally efficient on flat roofs or ground-mounted structures. The pure version is characterized by an elegant design that blends perfectly with modern architecture, eliminating the problem of unsightly installations. This solution is dedicated to investors seeking maximum **fire safety** and protection against extreme weather, such as hail or heavy snow loads. Unlike standard glass-foil modules, the GM 3.0 pure construction offers **above-average mechanical and chemical lifespan**. By choosing these panels, the user receives a product with the highest resistance class, ideal for single-family homes and demanding commercial systems. The solid, black frame provides additional stiffness, and the **use of half-cut cells** minimizes energy losses resulting from partial shading, which guarantees continuity of operation even in less favorable sunlight conditions. ## Notable figures - 20.4% module efficiency - 0.9pp better than the \*\*PERC 0-400W\*\* median of 19.4% - Power density of 202.9 W/m² packs 8.5 W/m² more into the same footprint vs \*\*PERC 0-400W\*\* median (194.4 W/m²) - Temperature coefficient of -0.34%/°C matches the \*\*PERC 0-400W\*\* median - At 25.0 kg, this panel is 4.5 kg heavier than the \*\*PERC 0-400W\*\* median (20.5 kg) - more demanding for installation crews - #11598 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### What warranty does the Solarwatt vision GM 3.0 pure come with, and what exactly does it cover? Solarwatt backs the vision GM 3.0 pure series with a dual 30-year warranty — 30 years on the product and 30 years on power output performance. For three decades, the manufacturer guarantees module output at a contractually defined level. This is one of the longest warranty commitments in the PV market, made possible by the module's durable glass-glass construction. ### How does the glass-glass build of the GM 3.0 pure differ from conventional backsheet modules? Standard PV modules use a polymer backsheet, while the GM 3.0 pure uses dual tempered glass on both sides of the cells. This design is virtually immune to micro-cracking and potential-induced degradation (PID), blocks moisture ingress entirely, and significantly improves fire resistance class. In practice, it delivers superior mechanical and chemical longevity compared to conventional glass-backsheet modules. ### How well does the Solarwatt vision GM 3.0 pure handle partial shading from chimneys or roof obstructions? Very well. The GM 3.0 pure series uses half-cut PERC cells, which split each cell into two independent electrical circuits. In practical terms, partial shading from a chimney, antenna, or adjacent obstacle reduces output only in the affected section rather than pulling down an entire string. This makes the panel a strong choice for rooftops with multiple obstructions. ### What is the peak power of the Solarwatt vision GM 3.0 pure, and how many panels do I need for a typical home? The module's rated peak power (Pmpp) is 385 W. For a typical single-family home, a system of 10 to 14 panels delivers 3.85 to 5.4 kWp — generally sufficient to cover the annual energy demand of an average household. The modules are compatible with standard single-MPPT and multi-MPPT string inverters widely available on the market. ### Is the Solarwatt vision GM 3.0 pure series still available for purchase? The Panel vision GM 3.0 pure series has been discontinued and is no longer part of Solarwatt's active product lineup. Individual units may still be available from distributor stock or the secondary market. For new installations, we recommend checking Solarwatt's current product range, where the manufacturer offers newer generations of glass-glass modules that succeed this series. ### Should I be concerned that Solarwatt is not a Tier 1 manufacturer when choosing the GM 3.0 pure panels? The Tier 1 classification primarily reflects a manufacturer's financial capacity to honor warranties, not product quality directly. Solarwatt is a German company founded in 1993 with rigorous EU-standard quality controls. In this context, the 30-year dual product and power warranty is a more meaningful reliability indicator than the Tier 1 rating alone. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Data-sheet-SOLARWATT-Panel-vision-GM-30-pure-en-ac4c32e9832c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +2.8 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +2.8 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -40 W, lighter, +2.6 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | -20 W, lighter, +2.6 pp | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +2.6 pp | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | +20 W, lighter, +2.6 pp | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | +20 W, lighter, +2.6 pp | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +2.6 pp | | [Maxeon SPR-MAX3-430-R](https://comparepv.com/panel/maxeon-spr-max3-430-r) | 430 W | Cooler, +2.3 pp, +10 yr warranty | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +2.2 pp, +10 yr warranty | | [Solarwatt SOLARWATT Panel vision GM 3.0 style 360](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-gm-3-0-style-360) | 360 W | -20 W, -1.0 pp | | [Solarwatt SOLARWATT Panel vision GM 3.0 style 365](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-gm-3-0-style-365) | 365 W | -15 W, -0.8 pp | | [Solarwatt SOLARWATT Panel vision GM 3.0 pure 370 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-gm-3-0-pure-370-wp) | 370 W | -10 W, -0.5 pp | | [Solarwatt SOLARWATT Panel vision GM 3.0 pure 375 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-gm-3-0-pure-375-wp) | 375 W | Very close match | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +130 W, cooler, +4.6 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +115 W, cooler, +4.4 pp | --- Source: https://comparepv.com/panel/solarwatt-panel-vision-gm-3-0-pure-380-wp Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.