---
title: "Silfab Solar Panels Review 2026: Pros, Cons & Specs | ComparePV"
description: "In-depth Silfab solar panel review 2026. 47 models analyzed: efficiency, cell technology, warranty, top picks. Compare Silfab panels on ComparePV."
source: "https://comparepv.com/reviews/silfab"
---

# Silfab panels, *read off the datasheets*

Silfab Solar is a North American leader in the design, development, and manufacture of high-efficiency, premium-quality solar cells and modules. Leveraging over 40 years of solar experience, they operate fully automated facilities in Washington, South Carolina, and Ontario, Canada. Their products are...

Everything below is computed from those 47 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where Silfab does not publish a figure, it is left out of the average rather than assumed.


## The company

- **Founded:** 2010
- **Headquarters:** Mississauga, Canada
- **Annual capacity:** 1.6 GW
- **Employees:** 800+
- **Tier 1 bankable:** Yes (good)

Company facts, not datasheet figures. Tier 1 is a financier's bankability list, and says nothing about how a panel performs.


## Key figures


| Measure | Value | Note |
| --- | --- | --- |
| Panels | 47 | models in the database |
| Average efficiency | 20.6 % | across the catalogue |
| Best efficiency | 22.9 % | their strongest module |
| Power range | 300-640 Wp | smallest to largest |
| Bifacial share | 30 % | 14 dual-sided models |
| Average warranty | 30 years | guaranteed output term |


## 01. The top of the range

The leaders of Silfab's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof.


### Most efficient

module efficiency


| # | Panel | power | efficiency |
| --- | --- | --- | --- |
| 1 | [SIL-640 XL](https://comparepv.com/panel/silfab-sil-640-xl) | 640 Wp | 22.9% (good) |
| 2 | [SIL-590 XM+](https://comparepv.com/panel/silfab-sil-590-xm) | 590 Wp | 22.8% (good) |
| 3 | [SIL-540-XM-BIFACIAL](https://comparepv.com/panel/silfab-sil-540-xm-bifacial) | 540 Wp | 22.7% (good) |
| 4 | [SIL-440 QD](https://comparepv.com/panel/silfab-solar-inc-sil-440-qd) | 440 Wp | 22.6% (good) |
| 5 | [SIL-630 XL](https://comparepv.com/panel/silfab-sil-630-xl) | 630 Wp | 22.6% (good) |

- SIL-640 XL - Monocrystalline bifacial
- SIL-590 XM+ - Monocrystalline bifacial
- SIL-540-XM-BIFACIAL - Monocrystalline bifacial
- SIL-440 QD - Monocrystalline
- SIL-630 XL - Monocrystalline bifacial

[Sort the whole catalogue by efficiency](https://comparepv.com/panels/silfab?sort_by=efficiency&sort_order=desc)


### Highest power

nameplate output


| # | Panel | efficiency | power |
| --- | --- | --- | --- |
| 1 | [SIL-640 XL](https://comparepv.com/panel/silfab-sil-640-xl) | 22.9% (good) | 640 Wp |
| 2 | [SIL-630 XL](https://comparepv.com/panel/silfab-sil-630-xl) | 22.6% (good) | 630 Wp |
| 3 | [SIL-620 XL](https://comparepv.com/panel/silfab-sil-620-xl) | 22.2% (good) | 620 Wp |
| 4 | [SIL-590 XM+](https://comparepv.com/panel/silfab-sil-590-xm) | 22.8% (good) | 590 Wp |
| 5 | [SIL-580-XM+-BIFACIAL](https://comparepv.com/panel/silfab-sil-580-xm-bifacial) | 22.4% (good) | 580 Wp |

- SIL-640 XL - Monocrystalline bifacial
- SIL-630 XL - Monocrystalline bifacial
- SIL-620 XL - Monocrystalline bifacial
- SIL-590 XM+ - Monocrystalline bifacial
- SIL-580-XM+-BIFACIAL - Monocrystalline bifacial

[Sort the whole catalogue by power](https://comparepv.com/panels/silfab?sort_by=power&sort_order=desc)


## 02. By what the array is for

Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case.


### For a house roof

380-460 Wp


| # | Panel | power | efficiency |
| --- | --- | --- | --- |
| 1 | [SIL-440 QD](https://comparepv.com/panel/silfab-solar-inc-sil-440-qd) | 440 Wp | 22.6% (good) |
| 2 | [SIL-430 QD](https://comparepv.com/panel/silfab-sil-430-qd) | 430 Wp | 22.1% (good) |
| 3 | [SIL-430-QD](https://comparepv.com/panel/silfab-sil-430-qd-1) | 430 Wp | 22.1% (good) |
| 4 | [SIL-420-BG](https://comparepv.com/panel/silfab-sil-420-bg) | 420 Wp | 21.9% |
| 5 | [SIL-420 QD](https://comparepv.com/panel/silfab-sil-420-qd) | 420 Wp | 21.5% |

- SIL-440 QD - Monocrystalline
- SIL-430 QD - Monocrystalline
- SIL-430-QD - Monocrystalline
- SIL-420-BG - Monocrystalline
- SIL-420 QD - Monocrystalline


### For a commercial array

500 Wp and up


| # | Panel | power | efficiency |
| --- | --- | --- | --- |
| 1 | [SIL-640 XL](https://comparepv.com/panel/silfab-sil-640-xl) | 640 Wp | 22.9% (good) |
| 2 | [SIL-630 XL](https://comparepv.com/panel/silfab-sil-630-xl) | 630 Wp | 22.6% (good) |
| 3 | [SIL-620 XL](https://comparepv.com/panel/silfab-sil-620-xl) | 620 Wp | 22.2% (good) |
| 4 | [SIL-590 XM+](https://comparepv.com/panel/silfab-sil-590-xm) | 590 Wp | 22.8% (good) |
| 5 | [SIL-580-XM+-BIFACIAL](https://comparepv.com/panel/silfab-sil-580-xm-bifacial) | 580 Wp | 22.4% (good) |

- SIL-640 XL - Monocrystalline bifacial
- SIL-630 XL - Monocrystalline bifacial
- SIL-620 XL - Monocrystalline bifacial
- SIL-590 XM+ - Monocrystalline bifacial
- SIL-580-XM+-BIFACIAL - Monocrystalline bifacial


### For a ground mount

dual-sided


| # | Panel | power | efficiency |
| --- | --- | --- | --- |
| 1 | [SIL-640 XL](https://comparepv.com/panel/silfab-sil-640-xl) | 640 Wp | 22.9% (good) |
| 2 | [SIL-590 XM+](https://comparepv.com/panel/silfab-sil-590-xm) | 590 Wp | 22.8% (good) |
| 3 | [SIL-540-XM-BIFACIAL](https://comparepv.com/panel/silfab-sil-540-xm-bifacial) | 540 Wp | 22.7% (good) |
| 4 | [SIL-630 XL](https://comparepv.com/panel/silfab-sil-630-xl) | 630 Wp | 22.6% (good) |
| 5 | [SIL-580-XM+-BIFACIAL](https://comparepv.com/panel/silfab-sil-580-xm-bifacial) | 580 Wp | 22.4% (good) |

- SIL-640 XL - Monocrystalline bifacial
- SIL-590 XM+ - Monocrystalline bifacial
- SIL-540-XM-BIFACIAL - Monocrystalline bifacial
- SIL-630 XL - Monocrystalline bifacial
- SIL-580-XM+-BIFACIAL - Monocrystalline bifacial


## 03. What the catalogue is made of

Shares are of the 47 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one.

[Cell technology across the market](https://comparepv.com/stats/cell-technology)


### Cell technology

share of the catalogue


| # | Panel | share | panels |
| --- | --- | --- | --- |
|  | PERC | 44.7% | 21 |
|  | N-type | 40.4% | 19 |
|  | Unknown | 12.8% | 6 |
|  | TOPCon | 2.1% | 1 |

PERC accounts for 44.7% of the catalogue - 21 of 47 modules.


### Efficiency spread

share of the catalogue


| # | Panel | share | panels |
| --- | --- | --- | --- |
|  | \<20% | 40.4% | 19 |
|  | 20-21% | 10.6% | 5 |
|  | 21-22% | 21.3% | 10 |
|  | 22-23% | 27.7% | 13 |


## 04. Strengths and gaps

Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built.


### What this catalogue is good at

- **Strength:** Tier 1 bankable manufacturer - recognized by major financial institutions
- **Strength:** High-efficiency panels available (up to 22.9%)
- **Strength:** Strong warranty coverage averaging 30 years
- **Strength:** High-power panels available (up to 640W) for commercial applications
- **Strength:** Large-scale production capacity of 1.6 GW


### Where it is thin

- **Watch out:** Average efficiency of 20.6% is below the industry leading edge
- **Watch out:** Limited adoption of latest cell technologies (TOPCon/HJT)


## 05. In short

> **Silfab:** Silfab is a solid option, offering 47 panels suitable for both residential and commercial buyers. With an average efficiency of 20.6% and top models reaching 22.9%, their panels deliver competitive performance. As a Tier 1 bankable manufacturer, they offer strong financial backing and long-term reliability.


### Common questions


#### Is Silfab a good solar panel manufacturer?

Silfab offers 47 solar panel models with an average efficiency of 20.6%. They are a Tier 1 bankable manufacturer, recognized by major financial institutions for reliability. Check their full panel lineup on ComparePV to find the best model for your needs.


#### What types of solar panels does Silfab make?

Silfab manufactures panels ranging from 300W to 640W, covering both residential and commercial applications. Their portfolio includes PERC (45%), N-type (40%), Unknown (13%) cell technologies.


#### How efficient are Silfab solar panels?

Silfab panels have an average efficiency of 20.6%, with their most efficient model reaching 22.9%. This puts them in the competitive range in the current market.


#### Does Silfab make bifacial solar panels?

Yes, Silfab offers 14 bifacial panels, representing 30% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems.


#### What warranty does Silfab offer on their solar panels?

Silfab panels come with an average performance warranty of 30 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels.


#### Are Silfab panels good for residential use?

Silfab offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications.


## 06. Compared with

A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes.

[Build your own](https://comparepv.com/comparisons)

- [Silfab vs Jinko Solar](https://comparepv.com/jinko-solar-vs-silfab)
- [Silfab vs JA Solar](https://comparepv.com/ja-solar-vs-silfab)
- [Silfab vs Trina Solar](https://comparepv.com/silfab-vs-trina-solar)
- [Silfab vs LONGi](https://comparepv.com/longi-vs-silfab)
- [Silfab vs Canadian Solar](https://comparepv.com/canadian-solar-vs-silfab)
- [Silfab vs Q-Cells](https://comparepv.com/q-cells-vs-silfab)
- [Silfab vs AIKO](https://comparepv.com/aiko-vs-silfab)
- [Silfab vs Hyundai](https://comparepv.com/hyundai-vs-silfab)


## Elsewhere

- [All Silfab panels 47](https://comparepv.com/panels/silfab)
- [All manufacturers](https://comparepv.com/reviews)
- [Panel database](https://comparepv.com/panels)
- [Market statistics](https://comparepv.com/stats)


---

Source: https://comparepv.com/reviews/silfab