Out of stock

Solaria 400W Solar Panel PowerXT-400R-PM

price as of April 23
Solar Loan from 6.99%
All SOLARIA products All 400 Watt Panels


Rated Power Output 400 W
Voltage (VOC)51.1V
Maximum String Voltage 1000V
Cell TypeMonocrystalline
Rated Efficiency20.2%
Connector TypeMC4 or MC4 compatible
Backsheet Colorblack
Frame Colorblack
Dimensions LxWxH64.72" x 47.4" x 1.57"
Weight46 lbs
Pallet Qty25
Manufacturer Part #Solaria400WSolarPanelMC-4PowerXT-400R-PM
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
Warranty25 years Manufacture
Delivery Time 5-7 business days
Special FeaturesMLPE compatible

About product

Solaria 400W Solar Panel MC-4 PowerXT-400R-PM

This state-of-the-art 400 watt solar panel with Pure Black™ technology optimizes power, performance and aesthetics. PowerXT 400W uses Solaria’s patented cell design, superior panel architecture and innovative assembly techniques to significantly boost power generation. All in all, Solaria 400W solar panels provide superior shading performance and set the standard for reliability.

Higher Efficiency

Solaria PowerXT modules achieve over 20% efficiency; conventional modules achieve 15%-17% efficiency. The PowerXT 400W solar panel outputs the most power of any residential all-black solar panel. Higher efficiency panels produce more power per square meter area, reducing the number of panels, balance of system components, and installation labor. Find more information in Solaria 400 data sheet.

Quality and Reliability

Ribbon-less, solder-free design of Solaria 400 watt solar panel removes wiring between cells, designed for reliability beyond 25 years.

Frame Design 

Thicker glass and frame provides a rugged module design that can withstand harsh weather conditions. Solaria Power XT 400 is certified to withstand 5400 PA of the front load and 2400 Pa of rear load.

Performance Warranty

This model provides a 25 year warranty for extra linear power output. The panel retains over 86% of its initial power output, according to the Solaria 400W spec sheet.

Product Details

  • Monocrystalline
  • Power output 400W
  • Shipping weght 46 lbs
  • Shipping dimensions& 64.72" x 47.4" x 1.57"
  • Frame color Black Anodized

Reviews & Questions

  • Reviews (3)
  • Questions (1)
I think you have done a wonderful job and I appreciate everything. I hope to do lots of business with you in the future.
12/22/2020 05:12 pm
I finally have my system up and running. I am happy with what I am producing and with the quality of the products. Thanks for all your help
12/20/2020 09:31 pm
Just wanted to thank all of the co-workers in handling my order. This has been the best customer service ever.
10/07/2020 01:59 pm

Leave a review

Whats the best roof position for installing solar panels
12/02/2020, 13:47
The best position is towards south but also west and east will do. A 30-degree angle is suitable for the best year-round operation.


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