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Silfab 370W Solar Panel 120 Cell SIL-370-HC

Solar Loan from 6.99%
All Silfab products All 370 Watt Panels


Rated Power Output 370 W
Voltage (VOC)41.75 V
Number of cells120
Cell TypeMonocrystalline
Rated Efficiency20.2 %
Connector TypeMC4
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH69.4" x 40.8" x 1.37"
Weight44 lbs
Manufacturer Part #Silfab370WSIL-370-HC
Operating Temperatures -40 °F to +185 °F
Scope of Application
  • Solar Panels for Boats
  • Solar Panels for Commercial
  • Solar Panels for Home
  • Solar Panels for RV
  • Grid-Tie
  • Off-Grid
Warranty12-year warranty extendable 25 years
Delivery Time 5-7 business days

About product

Silfab HC 370W is a 120 cell monocrystalline solar panel made in the USA. This all-black panel features 9 busbars, which results in lower power output losses in shading conditions. Silfab 370W solar panels are ideal for both residential and commercial installations.

  • 370 Watts
  • 120 Cell, Monocrystalline, PERC
  • 9 busbars
  • 20.2% Module Efficiency
  • 1000 V Max System Voltage
  • MC4 connectors
  • Black frame, black back

Industry-Leading Efficiency of up to 20.2%

Premium quality materials and strict quality control management allow Silfab HC 370W panels to show an efficiency of up to 20.2% under test conditions. Reduced thermal stresses and DSM antireflective coating contribute to an even greater solar power harvest.

Automated Manufacturing Process

Silfab’s manufacturing process is one of the most automated in the world. The North American manufacturer pays a particular attention to details to ensure high-quality PV modules, which outperform the others in efficiency, endurance and long-term power performance. The Silfab 370 watt solar panel is an example of the NA quality.

Quality and Reliability

The quality of each Silfab HC 370W panel is under meticulous control throughout the manufacturing process. Silfab panels are designed and manufactured to meet Buy American Act Compliance.

Enhanced Frame Design

The Silfab 370W module’s aluminum light-weight frame is compatible with different racking. It is also extremely durable, being able to withstand a heavy wind and snow load up to 5400 Pa.

25 Year Product and 30 Year Performance Warranty

Silfab 370 degradation is low and the panel comes with unparalleled guarantees for the industry. Silfab HC 370W panels come with a 12-year product workmanship and 30-year performance warranty, which guarantees 82.6% of power output at the end of year 30, according to the Silfab 370 spec sheet.


69.4" x 40.8" x 1.37"


44 lbs

Reviews & Questions

  • Reviews (4)
  • Questions (2)
grabbed my order at the warehouse. everything is in order. going to store them in the garage until the installation
07/10/2021 09:25 am
I purchased these panels mainly because the warranty caught my eye. Never saw a 30 year performance warranty before and decided that these guys probably think highly of their product. Hope to live long enough to see these panels age.
06/19/2021 02:14 pm
Got the package, thanks! The installation started, everything goes as it should so far. My installer (a really nice guy) approved my choice and said that Silfab panels always pay for themselves and not just once here in California, but two or three times.
06/02/2021 07:43 pm
We (me and my wife) purchased these panels five months ago for our flower shop in Phoenix. Our electric bills diminished by, i’d say, 80%. Even though I had my doubts in the beginning, now I really know that it was a good decision to go solar. Thank you
05/16/2021 06:42 am

Leave a review

Hi. I heard you need to get a permit to install solar. Will i need one for these panels?
07/05/2021, 10:37
Good day. Whether or not you need a permit depends not on the model, but on the state. In most states the permit is required, but it’s usually your installer who handles most of the work.
Hello. i live in montana, and it snows a lot here. will it affect them? how long are these going to last?
Damien Yu
06/16/2021, 09:46
Good day. Silfab panels last at least 30 years. The cold won’t be an issue, they actually work better when it’s cold and sunny. However, if the snow is thick, you have to clean it to allow panels to produce energy in winter.


How much is shipping and how long is delivery?
Our standard shipping charge is $250 for up to 11 panels and it is increased by $25 for every 4 additional panels. In the event, the product is only available on East or West coast custom quote will be sent to you before the order is processed. Normally, we are able to deliver solar panels within 7 business days.
What is the difference between low price panels and top price panels?
With top tier solar panels, you pay for the brand name, proprietary new technology, higher energy output, and better warranty support.
What are the dimensions of the panel?
Please refer to the product datasheet on the product page. We have a datasheet for every product we sell.
How long is the warranty on the panel?
In general, manufacturers provide a 25 year-long performance warranty and a 10 year-long equipment guarantee. Some manufacturers offer 12-15 years of warranty. More information is available in our warranty support section.
Which panels do you recommend for RV, marine?
We recommend Panasonic and Mission Solar panels for smaller systems as their high energy output and excellent craftsmanship guarantee years of service.
Can this panel be used with a 12v system?
Any of our panels can be used for a 12v system with a properly selected inverter and charge controller.
Can I pick up this panel from your fulfillment center to save on shipping?
Yes, we can set up a pick up at a local distributor. Please call to discuss options and stock availability.
How do I connect these panels?
To achieve the best system efficiency, panels should be connected in series to create higher voltage.
How many panels do I need?
This number is determined by your average energy needs. Depending on the type of panels and energy consumption, you might need anywhere from 12 to 45 solar panels. Remember, the more panels you install the more energy you will get.Please use our solar calculator to estimate your energy consumption and plan on building a solar system that will exceed your energy needs by 25%.
Do you offer discounts?
We do offer discounts for orders of over 50 units. Please contact us for details.
How do I build a solar system?
Please use our solar calculator to estimate what equipment you need. Choose your panels, microinverters, inverters, and solar batteries if necessary.Please note that we do not offer solar system design or installation.
How do solar panels compare?
Solar panels differ by power output, voltage, connection type, size, efficiency, and weight. Some solar panels might be sold together with microinverters as a set.
Can I build a solar system by myself as a Do It Yourself project?
Yes, it is possible if you understand what solar equipment you need and how to connect it together. However, please be mindful that handling your own electrical work without having proper experience might cause life-threatening injuries. Please contact a certified electrician if you do not possess appropriate electrical skills.
Can I connect and charge my solar panel battery directly with the solar panel?
We do not recommend using the solar panel without the charge controller. Using solar panels without the charge controller might damage the batteries.
Can I drill holes into the aluminum frame for mounting?
We do not recommend drilling any new holes to the aluminum frame of the panel as it could damage the internal circuit and solar cells. (Also, any modification to the panel will void the warranty). We recommend only using the pre-drilled holes for mounting.
Do solar panels require maintenance? Can I wash my solar panel?
Solar panels generally require very little maintenance. We recommend cleaning the solar panel with water, glass cleaner (Windex) and microfiber cloth.
Will my panel produce power in an overcast condition?
While solar panels require sunlight to generate solar energy, they will still work in cloudy weather. Even on a cloudy day, solar panels will produce energy just not as much.
Will my panels produce power if covered with snow?
Solar panels cannot produce electricity if covered with snow.
What is the best direction for a solar panel to face?
The best direction for a solar panel to face is the South