400 Watt Solar Panels
CertainTeed Solstice 400W Solar Panel 108 Cells Monocrystalline All-Black CTM10400HC11-08 Clearance
- Rated Power Output 400 W
- Voltage (VOC)37.15 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Hyundai 405W Solar Panel 132 Cell PERC Bifacial HiS-S405YH(BK) Clearance
- Rated Power Output 405 W
- Voltage (VOC)45.6 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Sirius 410W Solar Panel 108 Cell PERC ELNSM54M-HC-410 Assembled in the USA
- Rated Power Output 410 W
- Voltage (VOC)37.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 410W Solar Panel 132 Cell Q.ANTUM Q.PEAK DUO HQC-410-QPD-BKML-G10.C+-DCA Domestic Content
- Rated Power Output 410 W
- Voltage (VOC)45.37 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
REC 405W Solar Panel 132 Cell REC405AA Pure Black
- Rated Power Output 405 W
- Voltage (VOC)48.9 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
- Rated Power Output 405 W
- Voltage (VOC)37.2 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
More 400+ Watt Solar Panels
Clearance
UP TO 50% OFFTalesun Solar 415W Solar Panel 108 Cell PERC Bifacial All-Black TP7G54M(H)-415-BB Clearance
- Rated Power Output 415 W
- Voltage (VOC)37.75 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Peimar 450W Solar Panel 120 Cell PERC All-Black DR10H450MB Clearance
- Rated Power Output 450 W
- Voltage (VOC)41.18 V
- Number of cells120 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Trina 415W Solar Panel 144 Cell TOPCon Bifacial All-Black TSM-415NE09RC.05 Clearance
- Rated Power Output 415 W
- Voltage (VOC)50.5 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Trina 425W Solar Panel 144 Cell All-Black Bifacial TSM-425-NE09RC05 Clearance
- Rated Power Output 425 W
- Voltage (VOC)51.4 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
CertainTeed Solstice 400W Solar Panel 108 Cells Monocrystalline All-Black CTM10400HC11-08 Clearance
- Rated Power Output 400 W
- Voltage (VOC)37.15 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
JA Solar 440W Solar Panel 108 Cell N-Type Bifacial JAM54D41-440/MB Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.38 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Seraphim 440W Solar Panel 108 Cell TOPCon Bifacial All-Black SRP-440-BTD-BG Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.3 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Phono Solar 440W Solar Panel 108 Cell PERC Bifacial PS440M8GFH-18/VNHB Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.61 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Hyundai 405W Solar Panel 132 Cell PERC Bifacial HiS-S405YH(BK) Clearance
- Rated Power Output 405 W
- Voltage (VOC)45.6 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Philadelphia Solar 450W Solar Panels 108 Cell N-Type Bifacial All-Black MNB108(HCBF)-450W Clearance
- Rated Power Output 450 W
- Voltage (VOC)38.84 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Aptos Solar 415W Solar Panel 108 Cells BOB DNA-108-MF10-415W Clearance
- Rated Power Output 415 W
- Voltage (VOC)37.41 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Aptos Solar 460W Solar Panel 120 Cell PERC Bifacial DNA-120-BF10-460W Clearance
- Rated Power Output 460 W
- Voltage (VOC)41.18 V
- Number of cells120 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiS-T440NF(BK) Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.9 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
Trina 445W Solar Panel 96 Cell N-Type TOPCon Dual Glass Full Black TSM-445-NEG9RH.25 Clearance
- Rated Power Output 445 W
- Voltage (VOC)35.7 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
By Items
Talesun Solar 415W Solar Panel 108 Cell PERC Bifacial All-Black TP7G54M(H)-415-BB Clearance
- Rated Power Output 415 W
- Voltage (VOC)37.75 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Peimar 450W Solar Panel 120 Cell PERC All-Black DR10H450MB Clearance
- Rated Power Output 450 W
- Voltage (VOC)41.18 V
- Number of cells120 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Trina 415W Solar Panel 144 Cell TOPCon Bifacial All-Black TSM-415NE09RC.05 Clearance
- Rated Power Output 415 W
- Voltage (VOC)50.5 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Trina 425W Solar Panel 144 Cell All-Black Bifacial TSM-425-NE09RC05 Clearance
- Rated Power Output 425 W
- Voltage (VOC)51.4 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
CertainTeed Solstice 400W Solar Panel 108 Cells Monocrystalline All-Black CTM10400HC11-08 Clearance
- Rated Power Output 400 W
- Voltage (VOC)37.15 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
JA Solar 440W Solar Panel 108 Cell N-Type Bifacial JAM54D41-440/MB Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.38 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Seraphim 440W Solar Panel 108 Cell TOPCon Bifacial All-Black SRP-440-BTD-BG Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.3 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Phono Solar 440W Solar Panel 108 Cell PERC Bifacial PS440M8GFH-18/VNHB Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.61 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Hyundai 405W Solar Panel 132 Cell PERC Bifacial HiS-S405YH(BK) Clearance
- Rated Power Output 405 W
- Voltage (VOC)45.6 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Talesun Solar 445W Solar Panel 108 Cells N-Type Bifacial All-Black Dual Glass TM7G54M-445
- Rated Power Output 445 W
- Voltage (VOC)39.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Trina 445W Solar Panel 144 Cell N-Type i-TOPCon Bifacial All-Black TSM-445-NEG9RC.27
- Rated Power Output 445 W
- Voltage (VOC)52.6 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Philadelphia Solar 450W Solar Panels 108 Cell N-Type Bifacial All-Black MNB108(HCBF)-450W Clearance
- Rated Power Output 450 W
- Voltage (VOC)38.84 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Aptos Solar 415W Solar Panel 108 Cells BOB DNA-108-MF10-415W Clearance
- Rated Power Output 415 W
- Voltage (VOC)37.41 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Mission Solar 435W Solar Panel 108 Cell N-Type i-TOPCon All-Black MSX10-435HN0B Assembled in USA
- Rated Power Output 435 W
- Voltage (VOC)39.56 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
Hyundai 435W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiN-T435NF(BK)
- Rated Power Output 435 W
- Voltage (VOC)38.6 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Aptos Solar 460W Solar Panel 120 Cell PERC Bifacial DNA-120-BF10-460W Clearance
- Rated Power Output 460 W
- Voltage (VOC)41.18 V
- Number of cells120 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiN-T440NF(BK)
- Rated Power Output 440 W
- Voltage (VOC)38.8 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiS-T440NF(BK) Clearance
- Rated Power Output 440 W
- Voltage (VOC)39.9 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
Trina 445W Solar Panel 96 Cell N-Type TOPCon Dual Glass Full Black TSM-445-NEG9RH.25 Clearance
- Rated Power Output 445 W
- Voltage (VOC)35.7 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiS-T440NF(BK)
- Rated Power Output 440 W
- Voltage (VOC)39.9 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Canadian Solar 440W Solar Panel 96 Cell N-Type TOPCon All-Black CS6.2-48TM-440
- Rated Power Output 440 W
- Voltage (VOC)35.4 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO Q.TRON BLK M-G2+ Assembled in the USA
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Sirius 410W Solar Panel 108 Cell PERC ELNSM54M-HC-410 Assembled in the USA
- Rated Power Output 410 W
- Voltage (VOC)37.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 410W Solar Panel 132 Cell Q.ANTUM Q.PEAK DUO HQC-410-QPD-BKML-G10.C+-DCA Domestic Content
- Rated Power Output 410 W
- Voltage (VOC)45.37 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO QTRON-BKM-G2.C+-DCA Domestic Content
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Sirius PV 450W Solar Panel 108 Cell N-Type ELNSM54M-HC-N-450-DC:BS-E-J Domestic Content
- Rated Power Output 450 W
- Voltage (VOC)39.21 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
REC 460W Solar Panel 88 Cell HJT All-Black REC460AA PURE-RX
- Rated Power Output 460 W
- Voltage (VOC)65.8 V
- Number of cells88 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
REC 405W Solar Panel 132 Cell REC405AA Pure Black
- Rated Power Output 405 W
- Voltage (VOC)48.9 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Q CELLS 435W Solar Panel 108 Cell Q.ANTUM NEO Q.TRON BLK M-G2.C+ 435
- Rated Power Output 435 W
- Voltage (VOC)39.6 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
REC 460W Solar Panel 88 Cell HJT All-Black REC460AA PURE-RX Domestic Content
- Rated Power Output 460 W
- Voltage (VOC)65.7 V
- Number of cells88 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO AC module Q.TRON BLK M-G2.C1+/AC 430
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Top sellers
Talesun Solar 445W Solar Panel 108 Cells N-Type Bifacial All-Black Dual Glass TM7G54M-445
- Rated Power Output 445 W
- Voltage (VOC)39.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Trina 445W Solar Panel 144 Cell N-Type i-TOPCon Bifacial All-Black TSM-445-NEG9RC.27
- Rated Power Output 445 W
- Voltage (VOC)52.6 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Mission Solar 435W Solar Panel 108 Cell N-Type i-TOPCon All-Black MSX10-435HN0B Assembled in USA
- Rated Power Output 435 W
- Voltage (VOC)39.56 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Wed, Oct 21
Hyundai 435W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiN-T435NF(BK)
- Rated Power Output 435 W
- Voltage (VOC)38.6 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiN-T440NF(BK)
- Rated Power Output 440 W
- Voltage (VOC)38.8 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Hyundai 440W Solar Panel 108 Cell N-Type TOPCon Bifacial All-Black HiS-T440NF(BK)
- Rated Power Output 440 W
- Voltage (VOC)39.9 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Canadian Solar 440W Solar Panel 96 Cell N-Type TOPCon All-Black CS6.2-48TM-440
- Rated Power Output 440 W
- Voltage (VOC)35.4 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO Q.TRON BLK M-G2+ Assembled in the USA
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Sirius 410W Solar Panel 108 Cell PERC ELNSM54M-HC-410 Assembled in the USA
- Rated Power Output 410 W
- Voltage (VOC)37.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 410W Solar Panel 132 Cell Q.ANTUM Q.PEAK DUO HQC-410-QPD-BKML-G10.C+-DCA Domestic Content
- Rated Power Output 410 W
- Voltage (VOC)45.37 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO QTRON-BKM-G2.C+-DCA Domestic Content
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Sirius PV 450W Solar Panel 108 Cell N-Type ELNSM54M-HC-N-450-DC:BS-E-J Domestic Content
- Rated Power Output 450 W
- Voltage (VOC)39.21 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
REC 460W Solar Panel 88 Cell HJT All-Black REC460AA PURE-RX
- Rated Power Output 460 W
- Voltage (VOC)65.8 V
- Number of cells88 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
REC 405W Solar Panel 132 Cell REC405AA Pure Black
- Rated Power Output 405 W
- Voltage (VOC)48.9 V
- Number of cells132 Cell
- Cell TypeMonocrystalline
Pickup on Fri, Oct 16
Q CELLS 435W Solar Panel 108 Cell Q.ANTUM NEO Q.TRON BLK M-G2.C+ 435
- Rated Power Output 435 W
- Voltage (VOC)39.6 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
REC 460W Solar Panel 88 Cell HJT All-Black REC460AA PURE-RX Domestic Content
- Rated Power Output 460 W
- Voltage (VOC)65.7 V
- Number of cells88 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
Q CELLS 430W Solar Panel 108 Cell Q.ANTUM NEO AC module Q.TRON BLK M-G2.C1+/AC 430
- Rated Power Output 430 W
- Voltage (VOC)39.32 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Pickup on Thu, Oct 15
By Pallets
Regitec 415W Solar Panel 108 Cell PERC RMH54/415B1 Wholesale 36 panels per pallet
- Rated Power Output 415 W
- Voltage (VOC)37.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 405 W
- Voltage (VOC)37.2 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 430 W
- Voltage (VOC)38.49 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 440 W
- Voltage (VOC)39.3 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 445 W
- Voltage (VOC)39.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 450 W
- Voltage (VOC)39.6 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 450 W
- Voltage (VOC)35.03 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
- Rated Power Output 450 W
- Voltage (VOC)39.31 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
- Rated Power Output 450 W
- Voltage (VOC)38.84 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
By Truckload
- Rated Power Output 440 W
- Voltage (VOC)38.87 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 22–27
- Rated Power Output 450 W
- Voltage (VOC)35.78 V
- Number of cells96 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
- Rated Power Output 410 W
- Voltage (VOC)37.5 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
- Rated Power Output 440 W
- Voltage (VOC)39.3 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
- Rated Power Output 450 W
- Voltage (VOC)39.31 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
- Rated Power Output 440 W
- Voltage (VOC)39.3 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 22–27
- Rated Power Output 445 W
- Voltage (VOC)39.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 22–27
- Rated Power Output 440 W
- Voltage (VOC)38.8 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 22–27
- Rated Power Output 450 W
- Voltage (VOC)50 V
- Number of cells144 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
Regitec 415W Solar Panel 108 Cell RMH54/415B1 Commercial 936 panels per Container (Truckload)
- Rated Power Output 415 W
- Voltage (VOC)37.45 V
- Number of cells108 Cell
- Cell TypeMonocrystalline
Ready to ship on Oct 20–23
- Overview
- Articles
How to Choose a 400 Watt Solar Panel
A 400 watt solar panel is the standard residential class in the US, and it fits homeowners, RV and off-grid owners, and small installers. Higher efficiency and larger formats lifted panel wattage, and most home installs now use this class. Efficiency across the class runs 20.5% to 23%.
Homeowners weigh roof space against yearly use. A 400 watt solar panel for RV or cabin power usually means several panels, not a full array. Installers buy by the pallet.
What Counts as a 400 Watt Panel
A 400W solar panel is any panel rated from 395W to 425W. Manufacturers raised the power of the same physical panel from 400W to 415W. A higher-rated model is the same panel in the same format and takes no extra roof space. When you compare listings, read the rating, not the name.
An exact 400W rating is uncommon, since models are rated slightly above or below. A listing on either side still counts, so do not rule it out for missing the round number. Shop the whole class first, then narrow by brand, cell type, and warranty.
N-Type or PERC, Bifacial or All-Black
For a 400W panel, choose N-type TOPCon for slower degradation, PERC for a lower price, bifacial for light-colored roofs, gravel, or ground mounts, and all-black for appearance.
| Option | Why choose it |
|---|---|
| N-type TOPCon | It costs more and degrades more slowly, so it suits buyers who plan to own the system for a long time. |
| PERC | It costs less and fits a tight budget. |
| Bifacial | A 400 watt bifacial solar panel makes sense over a light-colored roof or gravel, or on a ground mount. |
| All-black | It is a choice about appearance, so pick it if the array is visible from the street and looks matter to you. |
One Panel, a Pallet or a Truckload
A1 SolarStore offers 400 watt solar panels for sale by the single panel, the pallet, or the truckload. There is no minimum order, so one panel is a valid order.
- Single panel or a few: fits an RV, boat, or cabin.
- Pallet: fits a small installer.
- Truckload: fits a larger project.
Price per watt falls as volume rises, so a pallet costs less per watt than a single panel. We carry panels from Q CELLS, Hyundai, Talesun, Trina, REC, Canadian Solar, Mission Solar, JA Solar, ZNShine, Seraphim, Peimar, Axitec, Philadelphia Solar, Phono Solar, and others.
Warranty and Certification
Performance warranties on these panels run 25 to 30 years. The exact term depends on the model, so check each listing before you buy. Compare degradation rates as well as years, since they decide how much output remains at the end of the term.
Look for these marks on the models you compare:
- UL listing
- California Energy Commission (CEC) listing
- Assembled in USA and Domestic Content, for projects where that is a requirement
Confirm the marks against your project's requirements before you order.
FAQ
A 400W panel produces about 1.3 to 1.7 kilowatt-hours a day in real conditions. The rated output is 1,600 to 2,000 watt-hours at four to five peak sun hours, less 15% to 20% for losses. Over a year, that adds up to 480 to 620 kilowatt-hours.
One panel's 1.3 to 1.7 kilowatt-hours a day can run small loads such as LED lights, a laptop, and a fan. It will not run central air conditioning or a whole house, since the average US home needs 17 to 22 of these panels. Pair it with a battery if you want those loads after dark.
The 400 watt solar panel price typically runs $125 to $300 per panel, or $0.30 to $0.75 per watt. The current 400 watt solar panel cost on this page starts at $124.56 per panel, or $0.30 per watt. Folding panels cost more, at $270 to $700, because they add a kickstand, a carry case, and cables.
The 400 watt solar panel size works out to about 21 square feet of roof per panel. A 108-cell panel measures 67.8 inches by 44.65 inches by 1.18 inches and weighs 46 to 54 pounds. A 132-cell panel measures 74 inches by 41.1 inches by 1.26 inches and weighs 48.5 pounds.
A 108-cell panel has an open-circuit voltage (Voc) of 37 to 39 volts, and a 132-cell panel has 45 to 46 volts. Operating voltage (Vmp) runs 31 to 41 volts. It is not a 12-volt panel: its operating voltage is roughly three times that of a 12-volt system.
Plan on one or two 12V 100Ah lithium batteries per panel, since one stores about 1.28kWh and the panel makes 1.3 to 1.7 kilowatt-hours a day. One holds about the low end of that range, and two cover a full day when the sun is good. Check the maker's depth-of-discharge limit.
A 12V 100Ah lithium battery charges in about four hours of good sun. That assumes the panel delivers its real-world output, after 15% to 20% losses. In December, Newark and Austin average about 2.6 to 2.7 peak sun hours, so the same battery takes about one and a half days to fill.
Yes, with a battery, one panel can run an Energy Star refrigerator that uses 1 to 1.5 kilowatt-hours a day. The panel makes 1.3 to 1.7 kilowatt-hours a day, so it covers the refrigerator on a good day. Little is left for other loads, and a low-output day can fall short.
- By: Alina Samarskaya
- Solar PV panels
- Updated: Sep 08, 2026
Solar Panel Maintenance 101: Cleaning, Inspection & Tips From a Tier 1 Manufacturer, Talesun
- By: Alina Samarskaya
- Solar PV panels
- Updated: Sep 03, 2026
New Jersey Just Legalized Balcony Solar. Here's What You're Actually Allowed to Plug In
- By: Alina Samarskaya
- Solar PV panels
- Updated: Aug 17, 2026
Solar Panel Prices Just Got a Price Floor: What the New Tariff Rule Means for Your Next Quote
Buy Solar Panels
BY SCOPE OF APPLICATION
- For 200 sq ft home
- For 400 sq ft home
- For 800 sq ft home
- For 1000 sq ft home
- For 1200 sq ft home
- For 1500 sq ft home
- For 1600 sq ft home
- For 1800 sq ft home
- For 2000 sq ft home
- For 2200 sq ft home
- For 2400 sq ft home
- For 2500 sq ft home
- For 3000 sq ft home
- For Air Conditioner
- For Apartments
- For Appliances
- For Barn
- For Battery Charging
- For Bus
- For Cabins
- For Camper
- For Camping
- For Car
- For Chicken Coop
- For Electricity
- For Food Truck
- For Garage
- For Generator
- For Golf Carts
- For Greenhouse
- For Hot Tub
- For Metal Roofs
- For Motorhome
- For Off Grid Living
- For Pool
- For Pool Pump
- For Power Station
- For Refrigerator
- For Roof
- For Semi Trucks
- For Shed
- For Swimming Pools
- For Tiny House
- For Travel Trailer
- For Trucks
- For Water Heater
- For Well Pump
- For Yard
- Show more
BY LOCATION
- AlabamaShow cities
- ArizonaShow cities
- ArkansasShow cities
- CaliforniaShow cities
- ColoradoShow cities
- ConnecticutShow cities
- DelawareShow cities
- FloridaShow cities
- GeorgiaShow cities
- HawaiiShow cities
- IdahoShow cities
- IllinoisShow cities
- IndianaShow cities
- IowaShow cities
- KansasShow cities
- KentuckyShow cities
- LouisianaShow cities
- MaineShow cities
- MarylandShow cities
- MassachusettsShow cities
- MichiganShow cities
- MinnesotaShow cities
- MississippiShow cities
- MissouriShow cities
- MontanaShow cities
- NebraskaShow cities
- NevadaShow cities
- New HampshireShow cities
- New JerseyShow cities
- New MexicoShow cities
- New YorkShow cities
- North CarolinaShow cities
- North DakotaShow cities
- OhioShow cities
- OklahomaShow cities
- OregonShow cities
- PennsylvaniaShow cities
- Rhode IslandShow cities
- South CarolinaShow cities
- South DakotaShow cities
- TennesseeShow cities
- TexasShow cities
- UtahShow cities
- VermontShow cities
- VirginiaShow cities
- WashingtonShow cities
- West VirginiaShow cities
- WisconsinShow cities
- WyomingShow cities
Stay tuned
Free and usefull digest on solar energy. No spam