--- title: "Silfab SIL-330 NL 330W Solar Panel - Specs & Review | ComparePV" description: "Silfab SIL-330 NL 330W solar panel. Specs: 19.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/silfab-sil-330-nl" updated: 2026-09-11 --- # Silfab SIL-330 NL Warranty pick, no clear weak spot 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Silfab - **Model:** SIL-330 NL - **Series:** SIL-330 NL - **Rated power:** 330 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 300-350 W (286 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 330 W | 325 W | Typical | | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 194.1 | 190.0 | Typical | 12,721 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight (kg) | 18.6 kg | 19.0 kg | Strong - top 17% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.40% | 19.00% | Typical | 12,735 | | Power density | 194.1 | 190.0 | Typical | 12,721 | | Temperature coefficient | -0.360 | -0.360 | Typical | 12,345 | | Weight per kWp | 56.4 | 60.0 | Strong - top 17% | 10,611 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 15% | 21 | ### Strengths - **30 year performance warranty** - Top 15% of the PERC 300-350 W segment, against a median of 25 yrs. - **56.4 kg per kWp** - Top 17% of the PERC 300-350 W segment, against a median of 60.0. - **Best for:** Residential and commercial. ## Specification ### Electrical - **Rated power (Pmax):** 330 W - **Efficiency:** 19.40 % - **Voltage at Pmax (Vmp):** 33.30 V - **Current at Pmax (Imp):** 9.92 A - **Open-circuit voltage (Voc):** 40.50 V - **Short-circuit current (Isc):** 10.42 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.280 %/degC - **Temperature coefficient of Isc:** 0.064 %/degC - **NOCT:** 46 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 60 ### Physical - **Length:** 1700 mm - **Width:** 1000 mm - **Thickness:** 38 mm - **Weight:** 18.6 kg - **Area:** 1.70 m2 - **Power density:** 194.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 82.6 % - **First-year degradation:** 2.90 % - **Output after 30 years:** 273 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12735 of 14005 | | Power density | 12721 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 10611 of 14005 | | Warranty | 21 of 14005 | ## About this series The SIL-330 NL series is a premium photovoltaic module built on monocrystalline PERC silicon cells that, thanks to **5-busbar technology**, deliver stable current flow and reduce losses caused by microcracks and partial shading. The panel stands out with its **sleek, all-black design**, making it an excellent match for modern architecture in both residential and commercial installations where roof aesthetics matter just as much as performance. The module's construction is optimized for demanding operating conditions - a lightweight, anodized aluminum frame withstands high wind and snow loads, while tempered glass with an anti-reflective coating protects against mechanical damage, including hail. The materials and manufacturing processes used ensure **PID resistance**, translating into stable performance throughout the module's service life. The SIL-330 NL is produced in **automated North American factories compliant with BAA/ARRA requirements**, making it a natural choice for investors working on publicly funded projects in the US and for installers who value short supply chains. The manufacturer backs the module with a **25-year product warranty and a 30-year power warranty**, giving investors long-term confidence in their return on investment. ## Notable figures - Efficiency of 19.4% matches the \*\*PERC 0-400W\*\* median - Power density of 194.1 W/m² matches the \*\*PERC 0-400W\*\* median - At -0.36%/°C, hot weather performance is typical for \*\*PERC 0-400W\*\* panels - Weight of 18.6 kg (1.9 kg below \*\*PERC 0-400W\*\* median of 20.5 kg) allows easier transport and roof mounting - In the top 91% for efficiency among all PERC panels ## Questions ### Is the Silfab SIL-330 NL series still available for purchase? The SIL-330 NL series has been discontinued from Silfab's current production lineup and replaced by newer, higher-wattage models. Units may still be available through distributors with remaining inventory, but buyers should confirm the manufacturing date and current warranty status directly with the seller, since the manufacturer no longer provides full after-sales support for phased-out models. ### What warranty comes with the SIL-330 NL panels and what does it cover? Silfab provides a 25-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the panel should still deliver a guaranteed percentage of its original output after 30 years. For discontinued models, it's worth verifying with the distributor whether the warranty remains fully honored and who handles claims after the series ends production. ### How does PERC cell technology in the SIL-330 NL differ from standard mono cells? The PERC cells used in the SIL-330 NL feature an additional passivation layer on the cell's rear side that reflects unused photons back into the silicon structure, increasing their absorption. In practice, this results in higher energy conversion efficiency compared to standard mono cells, especially in low-light conditions like early morning or overcast days, without increasing the panel's footprint. ### Do the SIL-330 NL panels meet BAA/ARRA requirements for publicly funded US projects? Yes, SIL-330 NL panels are manufactured in Silfab's automated North American factories, which comply with Buy American Act (BAA) and American Recovery and Reinvestment Act (ARRA) requirements. This makes the modules eligible for public and government-funded projects in the US requiring documented component origin, which is important for investors on federally subsidized installations. ### What roof types are best suited for the all-black SIL-330 NL panel? The fully black design of the SIL-330 NL, including frame, backsheet, and cells, blends well with dark roof tiles and modern architecture, suiting both sloped residential roofs and commercial installations. The lightweight, anodized aluminum frame also simplifies installation and withstands high wind and snow loads, conditions common in Polish climate. ### Does the 5-busbar technology in the SIL-330 NL affect panel durability? Yes, five busbars distribute current within the cell across more parallel paths, so microcracks or partial shading have less impact on overall module performance. This design reduces the risk of hot-spot formation and improves the panel's mechanical resistance to thermal stress, resulting in more stable performance throughout its service life. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Silfab-SIL-330-NL-20210722-Final-cb425077eb07.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Cooler, lighter, +3.9 pp | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | -50 W, cooler, +3.9 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, +3.8 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, +3.8 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -45 W, lighter, +3.6 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -30 W, lighter, +3.6 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | -10 W, lighter, +3.6 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | +10 W, lighter, +3.6 pp | | [Silfab SIL-300 ML](https://comparepv.com/panel/silfab-sil-300-ml) | 300 W | -30 W, -1.8 pp | | [Silfab SIL-310 ML](https://comparepv.com/panel/silfab-sil-310-ml) | 310 W | -20 W, -1.2 pp | | [Silfab SIL-320 BL](https://comparepv.com/panel/silfab-sil-320-bl) | 320 W | -10 W, hotter, -0.6 pp | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +110 W, cooler, +3.5 pp | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +105 W, cooler, +3.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | Cooler, +3.2 pp, +10 yr warranty | | [Jetion JT430SYk(B)](https://comparepv.com/panel/jetion-jt430syk-b) | 430 W | +100 W, cooler, +3.0 pp | --- Source: https://comparepv.com/panel/silfab-sil-330-nl Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.