--- title: "Silfab SIL-330 HL 330W Solar Panel - Specs & Review | ComparePV" description: "Silfab SIL-330 HL 330W solar panel. Specs: 19.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/silfab-sil-330-hl" updated: 2026-09-11 --- # Silfab SIL-330 HL Warranty pick, no clear weak spot 286 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Silfab - **Model:** SIL-330 HL - **Series:** SIL HL - **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):** 33.70 V - **Current at Pmax (Imp):** 9.80 A - **Open-circuit voltage (Voc):** 40.10 V - **Short-circuit current (Isc):** 10.40 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:** 120 ### 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 % - **Annual degradation:** 0.50 % - **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 Silfab SIL HL series is a premium line of mono-PERC photovoltaic modules engineered to combine high energy yield with a sleek, installation-friendly appearance. At the core of the series is **half-cut cell technology**, which reduces power losses caused by partial shading and elevated operating temperatures while also improving the panel's mechanical durability thanks to lower stress on the cells. The modules use monocrystalline PERC cells with five busbars, delivering a stable current-voltage curve even under low irradiance conditions. SIL HL panels are **PID resistant** in accordance with IEC 62804-1, making them a dependable choice for installations exposed to moisture and high system voltages. The distinctive **sleek all-black design** makes the series equally suited to residential rooftops and high-profile commercial projects, where aesthetics matter as much as performance. A lightweight yet **rugged frame construction**, tested against wind loads up to 4000 Pa and snow loads up to 5400 Pa, ensures broad racking compatibility and reliability in demanding climates. Manufacturing at automated facilities in North America, together with **BAA/ARRA compliance**, further reinforces the series' credibility among investors who expect documented quality and long-term warranty support. ## Notable figures - At 19.4% efficiency, this panel is on par with typical \*\*PERC 0-400W\*\* modules - At 194.1 W/m² power density, roof space requirements are typical for \*\*PERC 0-400W\*\* panels - Temperature coefficient of -0.36%/°C matches the \*\*PERC 0-400W\*\* median - Weight of 18.6 kg (1.9 kg below \*\*PERC 0-400W\*\* median of 20.5 kg) allows easier transport and roof mounting - #12735 for efficiency, #12345 for temperature performance out of 14005 panels ## Questions ### Is the Silfab SIL HL series still available for purchase? No, the SIL HL series has been discontinued by Silfab Solar. Panels may still be found through distributors as remaining stock, but the manufacturer no longer produces new batches of this model. Anyone planning to expand an existing SIL HL installation should check availability with local suppliers soon, as matching panels for already-installed arrays will become increasingly difficult over time. ### What warranty comes with Silfab SIL HL panels? SIL HL panels come with a 25-year product warranty and a 30-year linear power output warranty. This means the manufacturer covers both material and workmanship defects, as well as gradual power degradation over time. This warranty level is typical of Tier 1 manufacturers, adding credibility to the investment despite the series being discontinued. ### What is half-cell technology in the SIL HL panels and what are its benefits? Half-cell technology involves cutting standard silicon cells in half, reducing current losses and limiting the impact of partial shading, such as from chimneys or roof antennas. Smaller cells also experience lower mechanical stress, improving panel durability and reducing the risk of microcracks during transport, installation, and operation under variable weather conditions. ### Are Silfab SIL HL panels resistant to PID degradation? Yes, SIL HL modules are tested and certified for resistance to Potential Induced Degradation (PID) per IEC 62804-1. This means the panels maintain stable performance even under prolonged exposure to high system voltages and elevated humidity, which is important in large rooftop arrays and solar farms with many modules connected in series. ### Can Silfab SIL HL panels withstand heavy snow and wind loads, such as in mountainous climates? Yes, the SIL HL frame has been tested to withstand wind loads up to 4000 Pa and snow loads up to 5400 Pa, meeting the requirements of most demanding climates, including mountain regions and areas with heavy snowfall. This structural strength also ensures broad compatibility with common mounting systems on both sloped and flat roofs. ### Do Silfab SIL HL panels meet BAA/ARRA requirements for U.S. publicly funded projects? Yes, the SIL HL series is manufactured in Silfab's automated North American facilities and complies with Buy American Act (BAA) and American Recovery and Reinvestment Act (ARRA) requirements. This made the panels eligible for government and commercial projects in the U.S. requiring documented manufacturing origin, further boosting their credibility among institutional investors. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Silfab-SIL-330-HL-A-20210722-Final-550ffdb1b284.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-hl Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.