US made

Out of stock

Solaria 400W Solar Panel PowerXT-400R-PM

(48 ratings)

Q&A

SpecificationCompareSee all
Rated Power Output 400 W
Voltage (VOC)51.1V
Cell TypeMonocrystalline
Attachments
Solaria PowerXT-400R-PM Warranty Information Solaria PowerXT-400R-PM Installation Guide Datasheet Solaria Solar 400W

Customer reviews & Questions

Verified buyer reviews

Reviews (48)
Questions (1)

MSD

04/04/2025

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

We have 2 x Solaria 400w panels on our monohull sailboat, fastened atop an aft solar arch that doubles as a dinghy davit system. Each panel feeds to their own Victron 100/50 controller for redundancy. We bought these over 2 years ago at ~$400 apiece and would absolutely replace with the same if need be as they work like a charm and look fantastic in all black unlike the doubly priced Renegy panels marketed as “marine” that most cruisers use. The allowance of charging even when partially shaded due to Solaria’s wiring setup also makes them ideal for boats where boom shading is an ever-present challenge. The original set we ordered were damaged in transit and replaced immediately by a1 at no extra charge to us, so shoutout to a1 for excellent customer support as well. My only regret is that we don’t have any storage space aboard to keep more of these panels as backups should the need ever arise!

Mark D

10/14/2024

Solaria 400W Solar Panel Monocrystalline BOB PowerX-400R-4T...

Solaria panels offer great value for money. Their lightweight design and A1 SolarStore's efficient delivery make them a reliable choice. Opted for Trina due to their efficiency, and the decision paid off

Mark D

10/12/2024

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

andrew klarks

10/08/2024

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Works good.

Chan

07/20/2024

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Solaria panels were the perfect addition to our home PV system. The sleek design and exceptional performance, along with A1 SolarStore's swift delivery, exceeded our expectations.

Chan

07/12/2024

Solaria 400W Solar Panel Monocrystalline BOB PowerX-400R-4T...

Solaria panels were the perfect addition to our home PV system. The sleek design and exceptional performance, along with A1 SolarStore's swift delivery, exceeded our expectations.

llllttv

07/02/2024

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

The panels are working fine so far. I run an 8kW system, 5kW to the feed-in. The 8 allows quicker start-up. I have panels on two sides: East and West. I try to select what time or days that I need more power. Hot water system runs when I turn it on, not off-peak. A good system, I am quite happy with it so far. Hoping it keeps working top grade for years to come, even with a cold winter and price rises on the way. I still believe the system will keep in front.

llllttv

05/17/2024

Solaria 400W Solar Panel Monocrystalline BOB PowerX-400R-4T...

andrew klarks

05/08/2024

Solaria 400W Solar Panel Monocrystalline BOB PowerX-400R-4T...

Works good.

andrew klarks

02/04/2024

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Works good.

llllttv

12/27/2023

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Mark D

11/07/2023

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Chan

09/09/2023

Solaria 400W Solar Panel Monocrystalline Black PowerX-400R-4T...

Solaria panels were the perfect addition to our home PV system. The sleek design and exceptional performance, along with A1 SolarStore's swift delivery, exceeded our expectations.

Peter

06/14/2021

Solaria 365W Solar Panel PowerXT-365R-PD

Outstanding service! It’s too early to say anything now, but the price was great and I got the modules fast and undamaged. Have to admit, they look really cool

Kevin

04/18/2021

Solaria 365W Solar Panel PowerXT-365R-PD

I did the research and compared Solaria 365W to a few competitors. The efficiency was a factor because I want to use my roof space wisely. I also liked that the company manufactures its modules inside the US.

Joseph

02/11/2021

Solaria 365W Solar Panel PowerXT-365R-PD

A friend has been using this brand for over five years. From inquiry to completion, the store worked seamlessly.

Geremy

12/22/2020

Solaria 400W Solar Panel PowerXT-400R-PM

I think you have done a wonderful job and I appreciate everything. I hope to do lots of business with you in the future.

Tony

11/29/2020

Solaria 400W Solar Panel PowerXT-400R-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

Mark

10/07/2020

Solaria 400W Solar Panel PowerXT-400R-PM

Just wanted to thank all of the co-workers in handling my order. This has been the best customer service ever.

Ali

06/10/2020

Solaria 370W Solar Panel 60 cell PowerXT-370R-PD Black

I've been able to do a lot of research in these panels and they seem to be extremely durable and efficient which were the most important qualities to me.

Johnathon

06/10/2020

Solaria 370W Solar Panel 60 cell PowerXT-370R-PD Black

Based on a combination of panel efficiency and cost, Solaria offers a great quality product. From fit and finish to aesthetics, and overall value, I believe this panel meets our needs perfectly.

Arthur

05/04/2020

Solaria 370W Solar Panel 60 cell PowerXT-370R-PD Black

The panels seem very well built and perform as expected. They are also nice looking and integrated into our home's overall design perfectly.

Skylar

04/28/2020

Solaria 370W Solar Panel 60 cell PowerXT-370R-PD Black

Solaria solar panels have one of the best warranty out on the market and they look great on our roof. They blend in very nicely.

Trevor Nelson

04/24/2020

Solaria 360W Solar Panel 60 cell PowerXT-360R-PD

I have done a lot of research and found out that these panels are probably the best right now. They have been installed for a little over 6 months now and I cannot be happier with how they perform. I also like the way they look a lot.

Ryan

04/21/2020

Solaria 355W Solar Panel 60 cell PowerXT-355R-PD

These panels were of higher capacity than some of the other panels at the same price range. They look good on the roof, and seem to be working well.

Ron

04/18/2020

Solaria 360W Solar Panel 60 cell PowerXT-360R-PD

We are very pleased with the performance and the appearance of these panels.

Harlan

04/16/2020

Solaria 370W Solar Panel 60 cell PowerXT-370R-PD Black

Clearly a top-of-the-line panel. The lightweight frame makes installation faster and safer. The 25-year product and linear power performance guarantees say it all for this high-efficiency panel. And they look great.

Mike

04/06/2020

Solaria 355W Solar Panel 60 cell PowerXT-355R-PD

Thank you for a great customer service. I did not feel rushed or pushed to buy anything when I asked for advice. I got the information I needed, all my questions were answered and I, ultimately, ended up buying these panels based on the recommendations that I have received. So far, I am very happy with my choice.

Timothy

04/05/2020

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

We've had these panels for over 4 months and they seem to be performing quite well. I am happy with their appearance too. On our black roof they are almost invisible.

Seth

03/18/2020

Solaria 350W Solar Panel 60 cell + Enphase IQ7+ MicroInverter

I was looking to mount solar panels on front of the house, so appearance mattered a lot to me. Solaria deep black panels look great and perform well. I am happy with the purchase.

Douglas

02/14/2020

Solaria 350W Solar Panel 60 cell + Enphase IQ7+ MicroInverter

I'm impressed by the excellent quality I of my Solaria modules. They also look fantastic on my roof. You get top tier performance for such an affordable price.

Nate R.

02/06/2020

Solaria 350W Solar Panel 60 cell + Enphase IQ7+ MicroInverter

We wanted a high quality panels that were backed by a good warranty. Solaria offered worry free warranty and quite competitive pricing for their quality product. The modules perform very well.

Dallas

01/14/2020

Solaria 360W Solar Panel 60 cell PowerXT-360R-PD

These are simply the best panels you can get. They are the most efficient panels I've seen and so much cheaper than the competitors. I am so glad I have found this brand and install these modules.

John C.

12/11/2019

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

I've looked at a lot of solar panels trying to find the product that will work for me. And I have to say these panels are beautiful. They look like they made out of a single piece of black silicon. They also are so efficient. I am so happy I took my time and looked at a few brands before finally buying Solaria panels.

Robert

11/26/2019

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

I love the way they look and they seem to produce great even with very little sunshine. Very happy with them!

Owen

11/21/2019

Solaria 355W Solar Panel 60 cell PowerXT-355R-PD

I am very satisfied with the panels as they look great, work efficiently, and were very cost effective.

Larry H.

11/20/2019

Solaria 360W Solar Panel 60 cell PowerXT-360R-PD

Great looking, all black, high output panel that also has a great warranty. They work well for me and I would definitely recommend them to anybody.

Galyna Kruglov

09/20/2019

Solaria 360W Solar Panel 60 cell PowerXT-360R-PD

Best panels we ever had to install

George

09/03/2019

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

I wanted fewer panels, but with high efficiency. Three months in, they are meeting the original projections. I want to see how they perform over the next 12 months, particularly in the winter.

Eddy

08/03/2019

Solaria 355W Solar Panel 60 cell PowerXT-355R-PD

These are American made panels that are very efficient and look great. Happy with the purchase and proud to support an american manufacturer.

Adam

07/18/2019

Solaria 355W Solar Panel 60 cell PowerXT-355R-PD

Very efficient panels with an excellent power output. I was able to get fewer panels and still generate an adequate energy to provide my household with enough electricity.

Izzy

06/01/2019

Solaria 350W Solar Panel 60 cell + Enphase IQ7+ MicroInverter

These panels were recommended to us, but unfortunately, due to unforeseen circumstances, we had to return them after purchase. The return policy made it very easy for us, the restocking fee is quite reasonable for a big purchase like this.

Jayden

03/28/2019

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

This review is for customer service. We had no idea what we were looking for. The young man we talked to was so patient and knowledgeable, he did not push us to buy anything but rather explained what we did not understand. Thank you!

Renee

03/21/2019

Solaria 350W Solar Panel 60 cell + Enphase IQ7+ MicroInverter

These panels are so beautiful! They made my house look so good.

Campbell

02/19/2019

Solaria 355W Solar Panel AC module 60 cell XT-355R with...

I know it was a big investment for me, these panels are more expensive than some of the other brands, but I am glad I went with them. They seem very durable and for sure are very efficient.

Geremy

12/22/2020

I think you have done a wonderful job and I appreciate everything. I hope to do lots of business with you in the future.

Tony

11/29/2020

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

Mark

10/07/2020

Just wanted to thank all of the co-workers in handling my order. This has been the best customer service ever.

John

12/02/2020

Whats the best roof position for installing solar panels

A1 SolarStore

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.

Specification

Length	64.72in
Width	47.4in
Rated Power Output	400 W
Voltage (VOC)	51.1V
Maximum String Voltage	1000V
Cell Type	Monocrystalline
Rated Efficiency	20.2%
Connector Type	MC4 or MC4 compatible
Backsheet Color	black
Frame Color	black
Dimensions LxWxH	64.72 x 47.4 x 1.57 in
Pallet Qty	25
Manufacturer	Solaria
Manufacturer Part #	Solaria400WSolarPanelMC-4PowerXT-400R-PM
Operating Temperatures	-40 °F to +185 °F
Scope of Application	Solar Panels for Boats Solar Panels for Home Solar Panels for RV
Use	Grid-Tie Off-Grid
Warranty	25 years Manufacture
Special Features	MLPE compatible

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FAQ

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%.

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

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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.