Silfab Solar Brand Guide: Premium Mono PERC, AX Series & BOMEX Frames
By the PES Supply Editorial Team
Silfab Solar is a premium North American solar module manufacturer producing high-efficiency monocrystalline panels at its factories in Burlington, Washington and Bellingham, Washington. As an authorized PES Supply dealer partner, we stock Silfab's Prime, Elite, and AX module lines within our catalog of 50,000+ SKUs from 169 authorized brands. This guide covers Silfab's company background, product lines, BOMEX frame technology, warranty terms, certifications, and the top modules available through PES Supply.
Silfab combines Canadian engineering with US manufacturing to deliver panels specifically optimized for North American climates and Buy America compliance. Browse our complete solar panel inventory or jump to Shop Silfab Products below.
1. Company Overview
Silfab Solar was founded in 1981 by Michele and Franco Traverso and is headquartered in Toronto, Ontario, Canada, with manufacturing operations in Burlington, Washington and Bellingham, Washington. The company is one of the longest-established solar manufacturers still operating in North America and brings decades of European and North American PV manufacturing experience. Silfab is a BloombergNEF Tier 1 manufacturer and has been recognized as a top performer in the PVEL PV Module Reliability Scorecard for multiple consecutive years, including 2023 ([Silfab Solar](https://silfabsolar.com/resources-downloads/)).
Silfab's US-based manufacturing makes its panels compliant with the Buy American Act, and the company states that the US State Department, US Military, and FAA have all utilized Silfab panels in their installations ([Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2021/09/Silfab-SIL-360-NX-20210722-Final.pdf)). This positions Silfab alongside Mission Solar as one of PES Supply's primary domestic-content suppliers.
2. Current Product Lines
Silfab's active lineup is organized into residential and commercial series, all built on monocrystalline PERC and half-cut cell technology:
- Silfab Prime (SIL-400/410 HC+) — Next-generation high-performance residential panel featuring multi-busbar technology that maximizes energy collection and conversion. Available in 400 W and 410 W ratings with an industry-leading 25-year product workmanship and 30-year performance warranty ([Silfab Solar](https://silfabsolar.com/our-solar-panels/silfab-prime/sil-410-hc/); [Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2023/08/Silfab-SIL-400-410-HC-Data-Final.pdf)).
- Silfab Elite (SIL-410 BG) — Silfab's proprietary X-pattern technology combines an integrated cell design with an innovative conductive backsheet for a sleek, all-black panel manufactured in the USA. 410 W, 66-cell, 1000V, black-on-black aesthetic ([Silfab Solar](https://silfabsolar.com/our-solar-panels/silfab-elite/sil-410-bg/)).
- Silfab NX series (SIL-360 NX) — Premium mono PERC module with industry-leading 25-year product and 30-year performance warranty, designed and manufactured to meet Buy American Act compliance ([Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2021/09/Silfab-SIL-360-NX-20210722-Final.pdf)).
- Silfab Commercial / Utility series — Higher-power modules for commercial and utility applications, including the NL, ML, BL, HL, NT, MT, NU, and OP model families ([Silfab Solar](https://silfabsolar.com/resources-downloads/)).
Silfab's panels are engineered for North American homeowners, with frame designs optimized for wide-ranging racking compatibility and high front-side load conditions validated up to 5400 Pa ([Silfab datasheet](https://es-media-prod.s3.amazonaws.com/media/components/panels/spec-sheets/Silfab-SIL-400-NU-20210204-Final.pdf)).
3. Recent Releases (2025–2026)
Silfab's most recent product evolution is the HC+ (High-Cut Plus) generation, represented by the SIL-400/410 HC+ in the Prime series. The HC+ provides even more power than the prior HC generation, featuring next-generation multi-busbar technology that maximizes energy collection and conversion while maintaining Silfab's signature build quality ([Silfab Solar](https://silfabsolar.com/our-solar-panels/silfab-prime/sil-410-hc/)).
The SIL-410 BG (Elite) represents Silfab's push into premium aesthetics with its proprietary X-pattern conductive backsheet technology, delivering a sleek all-black panel manufactured in the USA. Silfab has also updated its warranty documentation in 2025, confirming its industry-leading 25-year product workmanship and 30-year performance warranty across its residential lineup ([Silfab Solar warranty](https://silfabsolar.com/wp-content/uploads/2025/08/Silfab-Solar-Warranty-Pre2018-20221129F.pdf); [Silfab Solar](https://silfabsolar.com/support-overview/)). The company continues to refine its PERC platform while maintaining domestic manufacturing — a strategic choice that prioritizes supply-chain security and Buy America compliance over the raw efficiency race pursued by Asian TOPCon manufacturers.
4. Certifications & Listings
- UL 61215-1:2017, UL 61215-2:2017, UL 61730-1:2017, UL 61730-2:2017 — current North American module safety and design qualifications ([GreenTech Renewables](https://www.greentechrenewables.com/product/silfab-solar-410w-66-cell-1000v-blkblk-solar-panel-sil-410-bg)).
- CSA C22.2 #61730 — Canadian safety standard.
- PVEL Top Performer — recognized in the PV Module Reliability Scorecard Report 2023 ([Silfab Solar](https://silfabsolar.com/resources-downloads/)).
- Buy American Act (BAA) compliance — designed and manufactured to meet BAA requirements; utilized by the US State Department, US Military, and FAA ([Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2021/09/Silfab-SIL-360-NX-20210722-Final.pdf)).
- PID resistant and tested for high mechanical load conditions up to 5400 Pa front and rear.
5. Warranty Terms
Silfab offers an industry-leading warranty package across its residential lineup:
- Product (workmanship) warranty: 25 years — among the longest standard product warranties available, covering all residential solar panels manufactured after January 1, 2018 ([Silfab Solar](https://silfabsolar.com/support-overview/)).
- Performance warranty: 30-year performance guarantee, ensuring strong retained output over the module lifetime.
This 25-year product / 30-year performance combination matches or exceeds the warranty terms of leading Asian TOPCon manufacturers while adding the benefit of domestic manufacturing and Buy America compliance. As a PES Supply authorized dealer, you file claims through our support team. Silfab's installer registration program ensures that installed panels are registered for full warranty coverage — keep your PES Supply invoice as proof of purchase.
6. PES Supply Authorized Dealer
PES Supply is an authorized Silfab Solar dealer supplying genuine US-manufactured modules with full manufacturer warranty coverage. Dealer benefits:
- Genuine, BAA-compliant product manufactured in Burlington and Bellingham, Washington.
- Stock availability across Prime (HC+), Elite (BG), and NX residential models.
- Lead times: In-stock orders ship within 7–10 business days delivery. Contact our sales team for project-scale allocation and ETAs.
- Volume pricing for contractors, EPCs, and government project managers.
7. Popular Silfab Products at PES Supply
| Model | Watts | Cell Tech | Efficiency | Dimensions | Warranty | Price Range |
|---|---|---|---|---|---|---|
| SIL-400 HC+ (Prime) | 400 W | Mono PERC half-cut | 20.3–20.8% | 1762 × 1037 × 35 mm | 25-yr product / 30-yr power | $0.45–$0.55/W |
| SIL-410 HC+ (Prime) | 410 W | Mono PERC half-cut | 20.6–21.0% | 1762 × 1037 × 35 mm | 25-yr product / 30-yr power | $0.46–$0.56/W |
| SIL-410 BG (Elite) | 410 W | Mono PERC (X-pattern) | 19.5–20.5% | 1864 × 1029 × 35 mm | 25-yr product / 30-yr power | $0.50–$0.60/W |
| SIL-360 NX | 360 W | Mono PERC | 19.0–20.0% | 1762 × 1037 × 35 mm | 25-yr product / 30-yr power | $0.48–$0.58/W |
Silfab's HC+ series delivers 400–410 W with multi-busbar technology and a 25-year product / 30-year performance warranty ([Silfab Solar](https://silfabsolar.com/our-solar-panels/silfab-prime/sil-410-hc/); [Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2023/08/Silfab-SIL-400-410-HC-Data-Final.pdf)). Prices are contractor estimates and vary with volume and market conditions.
8. Technical Comparison
| Brand | Manufacturing | BAA Compliant | Peak Efficiency | Product Warranty | Price Position |
|---|---|---|---|---|---|
| Silfab | Burlington/Bellingham, WA (USA) | Yes | ~21.0% | 25 yr | Mid-premium (domestic) |
| Mission Solar | San Antonio, TX (USA) | Yes (BABA) | 22.8% | 15 yr | Premium (domestic) |
| JA Solar | China | No | 24.8% (5.0) | 25 yr | Mid-range (value) |
| REC | Singapore | No | 22.6% | 20 yr | Premium |
Silfab's peak efficiency (~21%) trails the latest Asian TOPCon flagships (24.8%), but its value proposition mirrors Mission Solar's: true domestic manufacturing, Buy America compliance, and a warranty package (25-year product / 30-year performance) that matches the best in the industry. Silfab differentiates from Mission Solar with a longer 25-year product warranty (versus Mission's 15-year on N-type models) and its PVEL Top Performer reliability track record. For installers prioritizing warranty length and supply-chain security over raw watts per square foot, Silfab is a compelling domestic choice.
9. Installation Notes
- Frame: Silfab's proprietary BOMEX frame design — a lightweight frame exclusively engineered for wide-ranging racking compatibility and durability, validated to 5400 Pa front and rear load ([Silfab datasheet](https://es-media-prod.s3.amazonaws.com/media/components/panels/spec-sheets/Silfab-SIL-400-NU-20210204-Final.pdf)). The Elite BG series uses a sleek black frame for residential aesthetics.
- Connectors: MC4-compatible PV connectors.
- Junction box: IP67-rated with bypass diodes for partial-shade protection.
- Glass: 3.2 mm tempered low-iron anti-reflective glass; the Elite BG uses a conductive backsheet for an all-black appearance.
- Mechanical load: 5400 Pa rear load / 5400 Pa front load (112.8 lb/ft²) — symmetrical high-load rating suitable for high-wind and high-snow regions. Hail impact resistance rated for 25 mm diameter at 83 km/h ([Scribd Silfab spec](https://www.scribd.com/document/917217561/SOLAR-SILFAB)).
- Mounting compatibility: The BOMEX frame's lightweight design fits standard residential clamping systems including IronRidge and Unirac; the 35 mm profile accommodates most flashing and stand-off mounts.
10. Frequently Asked Questions
Where are Silfab panels manufactured?
Silfab panels are manufactured at the company's factories in Burlington, Washington and Bellingham, Washington, with Canadian engineering and headquarters in Toronto, Ontario. All residential panels are assembled in the USA.
Are Silfab panels Buy America-compliant?
Yes. Silfab panels are designed and manufactured to meet Buy American Act compliance, and have been utilized by the US State Department, US Military, and FAA. This makes them eligible for federally funded projects requiring domestic content ([Silfab datasheet](https://silfabsolar.com/wp-content/uploads/2021/09/Silfab-SIL-360-NX-20210722-Final.pdf)).
What is the BOMEX frame?
BOMEX is Silfab's proprietary lightweight frame design, engineered for wide-ranging racking compatibility and durability. It is validated to 5400 Pa front and rear load conditions, making it suitable for high-wind and high-snow installations.
What is the difference between Silfab Prime and Elite?
The Prime series (HC+) uses multi-busbar mono PERC technology for maximum energy collection. The Elite series (BG) adds Silfab's proprietary X-pattern conductive backsheet technology for a sleek all-black aesthetic, ideal for premium residential rooftops where appearance matters ([Silfab Solar](https://silfabsolar.com/our-solar-panels/silfab-elite/sil-410-bg/)).
What is the lead time from PES Supply?
In-stock Silfab modules ship within 7–10 business days delivery. Contact our sales team for project-scale allocation and ETAs from the Washington factories.
11. Shop Silfab Products
Source American-made, BAA-compliant Silfab Prime, Elite, and NX modules for residential and federally funded projects through PES Supply. Browse the full range of solar panels or view Silfab-specific listings:
Shop Silfab Products at PES Supply →
PES Supply (https://www.portlandiaelectric.supply) is a B2B electrical and solar distributor offering 50,000+ SKUs from 169 authorized brands. Verify all specifications against the manufacturer's current datasheet before final design.