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Solar Panels

Since 1999, altE has offered customers across the globe solar panels for their homes, cabins, RV's and boats. We carry leading brands such as SolarWorld, Kyocera Solar, Canadian Solar, and our own altE solar panels. See our full list of solar panels for sale below.

Not sure where to start? Check out our Solar Blog, off-grid sizing and grid-tie sizing calculators - great resources for beginners to the most experienced.

Want a custom designed solar power system for your home? Give us a call at 877-878-4060 and our trained solar professionals will work with you to design your own home solar system for FREE!



How Do
Solar Panels Work?

Monocrystalline vs. Polycrystalline
Panels

What can I power with
100W solar panel?


Read more +

SOLAR PANELS FOR SALE

Product Name  Volts Watts $ / Watt Price
  altE 5 Watt 12 Volt Solar Panel     altE 5 Watt 12 Volt    12 V  5 W  3.00  $15.00
  altE Poly 10 Watt 12V Solar Panel     altE Poly 10 Watt 12V    12 V  10 W  4.90  $49.00
  altE Poly 100 Watt 12V Solar Panel     altE Poly 100 Watt 12V    12 V  100 W  1.89  $189.00
  altE Poly 100 Watt 24V Solar Panel
    altE Poly 100 Watt 24V    24 V  100 W  1.89  $189.00
  altE Poly 120 Watt 12V Solar Panel     altE Poly 120 Watt 12V    12 V  120 W  1.66  $199.00
  altE Poly 140 Watt 12V Solar Panel     altE Poly 140 Watt 12V    12 V  140 W  1.64  $230.00
  altE Poly 20 Watt 12V Solar Panel     altE Poly 20 Watt 12V    12 V  20 W  2.95  $59.00
  altE Poly 200 Watt 24V Solar Panel     altE Poly 200 Watt 24V    24 V  200 W  1.50  $299.00
  altE Poly 200 Watt 24V Solar Panel - SCRATCHED     altE Poly 200 Watt 24V - SCRATCHED    24 V  200 W  1.34  $269.00
  altE Poly 30 Watt 12V Solar Panel     altE Poly 30 Watt 12V    12 V  30 W  2.63  $79.00
  altE Poly 50 Watt 12V Solar Panel     altE Poly 50 Watt 12V    12 V  50 W  2.38  $119.00
  altE Poly 60 Watt 12V Solar Panel     altE Poly 60 Watt 12V    12 V  60 W  2.32  $139.00
  altE Poly 80 Watt 12V Solar Panel     altE Poly 80 Watt 12V    12 V  80 W  1.99  $159.00
  Ameresco Solar 20J 20W 12V Solar Panel with J-Box     Ameresco Solar 20J 20W 12V with J-Box    12 V  20 W  9.75  $195.00
  Ameresco Solar 30J 30W 12V Solar Panel with J-Box     Ameresco Solar 30J 30W 12V with J-Box    12 V  30 W  8.97  $269.00
  Ameresco Solar 40J 40W 12V Solar Panel with J-Box     Ameresco Solar 40J 40W 12V with J-Box    12 V  40 W  6.89  $275.74
  Ameresco Solar 50J 50W 12V Solar Panel with J-Box     Ameresco Solar 50J 50W 12V with J-Box    12 V  50 W  5.90  $295.00
  Ameresco Solar 90J 90W 12V Solar Panel with J-Box     Ameresco Solar 90J 90W 12V with J-Box    12 V  90 W  4.43  $399.00
  Canadian Solar 255 Watt Smart Module with SolarEdge Optimizer     Canadian Solar 255 Watt Smart Module with SolarEdge Optimizer    20 V  255 W  0.89  $228.00
  Canadian Solar CS6X-320P 320 Watt Poly Solar Panel     Canadian Solar CS6X-320P 320 Watt Poly    24 V  320 W  0.93  $299.00
  Kyocera KD145SX-UFU 145 Watt Solar Panel     Kyocera KD145SX-UFU 145 Watt    12 V  145 W  2.06  $299.00
  Kyocera KD150GX-LFU 150 Watt Solar Panel     Kyocera KD150GX-LFU 150 Watt    12 V  150 W  2.07  $310.00
  Kyocera KU265-6MCA 265 Watt Solar Panel     Kyocera KU265-6MCA 265 Watt    20 V  265 W  0.94  $250.00
  SolarEver 50 Watt 12V Poly Solar Panel     SolarEver 50 Watt 12V Poly    12 V  50 W  1.50  $75.00
  SolarWorld 260 Watt Solar Panel, Sunmodule SW260 Poly V4.0 Black Frame     SolarWorld 260 Watt , Sunmodule SW260 Poly V4.0 Black Frame    20 V  260 W  0.82  $214.24
  SolarWorld 275 Watt Solar Panel, Protect Sunmodule 275W Mono BLACK, V4.0 Frame     SolarWorld 275 Watt , Protect Sunmodule 275W Mono BLACK, V4.0 Frame    20 V  275 W  1.31  $360.00
  SolarWorld 285 Watt Solar Panel, Sunmodule SW285 Black Mono V4.0 Frame - 5 Busbar     SolarWorld 285 Watt , Sunmodule SW285 Black Mono V4.0 Frame - 5 Busbar    20 V  285 W  0.87  $249.00
  SolarWorld 290 Watt Solar Panel, Sunmodule SW290 Mono V4.0 Frame - 5 Busbar     SolarWorld 290 Watt , Sunmodule SW290 Mono V4.0 Frame - 5 Busbar    20 V  290 W  0.93  $269.00
  SolarWorld 300 Watt Solar Panel, Sunmodule SW300 Mono V4.0 Frame -5 Busbar     SolarWorld 300 Watt , Sunmodule SW300 Mono V4.0 Frame -5 Busbar    20 V  300 W  0.93  $279.00
  SolarWorld 325 Watt Solar Panel, Sunmodule SW325 Mono V4.0 Frame     SolarWorld 325 Watt , Sunmodule SW325 Mono V4.0 Frame    24 V  325 W  0.92  $299.00
  SolarWorld 345 Watt Solar Panel, Sunmodule SW345 Mono V4.0 Frame     SolarWorld 345 Watt , Sunmodule SW345 Mono V4.0 Frame    24 V  345 W  0.84  $289.00
  Sonali Solar 10 Watt 12V Solar Panel     Sonali Solar 10 Watt 12V    12 V  10 W  4.90  $49.00
  Sonali Solar 20 Watt 12V Solar Panel     Sonali Solar 20 Watt 12V    12 V  20 W  2.95  $59.00
  Sunwize SW-S40P 40W 12V Solar Panel with J-Box     Sunwize SW-S40P 40W 12V with J-Box    12 V  40 W  3.98  $159.00
  Topoint JTM190-72M 190 Watt Solar Panel     Topoint JTM190-72M 190 Watt    24 V  190 W  0.59  $112.86
More Info on Solar Panels

What are solar panels?

The term solar panels is often used for a few different types of products that produce energy by collecting sunlight. We most commonly use the phrase to refer to the type that converts sunlight directly into DC electricity. Less frequently, people will use the term in reference to solar thermal collectors, which typically heats a liquid such as water, or solar air heaters, which heats air directly.

How do solar panels work?


Quick Version

Rays of sunlight hit solar cells, pushing the electrons in the cell through the wires to create electricity. This electricity is in one direction, so it is called DC, for Direct Current. As opposed to AC, for Alternating Current, where the electrons are going back and forth 50-60 times (50-60Hz) per second. That is why for most installations, you need an inverter. An inverter changes the DC to AC and makes it usable with your home's appliances.

Detailed Version

On one side of the solar cell, there's an overabundance of electrons and on the other side there is a lack of electrons. Manufacturers create this static imbalance of charges on the cell by doping each side of the silicon solar cell with different chemicals (e.g. phosphorous on one side and boron on the other). Wires or soldered leads are effectively connected to each side of the cell. The positive and negative wires go to whatever you want to charge or power.

Connecting the leads in itself to an electrical load, while closing the current path, does not allow to the electrons to flow, despite the positive and negative imbalance. It takes sunlight hitting the silicon in the solar cells to loosen up electrons. And as soon as they a freed up, they immediately start flowing through the wires to power your electrical loads. The more sunlight shines on the cells, the more electrons loosen up, the more electrical current flows and the more power it produces.

How Solar Panels Work

Want more? We have created a handy, more in-depth overview of how solar panels work. Here, we go into more detail of, not only how the photovoltaic effect works, but also how solar cells work together to create different voltage options, and what all the various ratings in the specification brochures mean.

Are solar power systems practical for home owners?

We're guessing you wouldn't have come here if you didn't have a hunch they probably were. But just in case, let's review when solar systems are practical for homes and when they're not. If you own home or cabin and you have (or a tiny home who can be parked such that...) a roof that roughly points south (north if south of the equator) with no shading by trees, hills, other homes from around 9AM to 3PM, then you have some prime real estate for putting a solar system on.

The cost has dropped significantly in the last several years, making it such that, with tax incentives or rebates, a grid-tie solar system will pay for itself in just a few years. Essentially, for the price of a few years electricity, you get 25 to 35 years of electricity. In fact, solar systems will likely keep on producing electricity at a lower rate for even decades after that.

Solar power systems are not practical for locations that get lots of shade throughout the day. That said, with the advent of micro inverters and grid-tie inverters that have DC optimizers connected to each individual solar panel, some locations with a little bit of shading can still be an option.

What are the best solar panels for homes?

It really depends on what is most important to you - brand, price, efficiency, where they are made, quality of the solar manufacturing process, etc. We wrote a blog post what are the best solar panels that covers this topic in greater detail.

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