used solar panels

Used solar panels: are they right for you?

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Some of the lowest prices for solar equipment can be found on sites like eBay, where people can post their used solar panels for sale a discounted price. In this article, we will look into the used solar panel market, and whether buying panels from a reseller is the best option for your home solar setup.

What to know about installing used solar panels

  • Used solar panels are right for some small projects, but not suitable for a home installation in most cases
  • Over time, solar panels degrade. It’s smart to install fresh panels for your roof
  • You can explore your solar panel installation options on the EnergySage Marketplace

What are used solar panels?

For the vast majority of solar installations, your solar installer will put in a system of brand new parts, from your panels to your inverters to the wiring. A quick online search for used solar panels will show you several buying options for second-hand equipment, coming from bidding sites like eBay to wholesale used panels from several vendors.

Panels may be sold used for several reasons. They may be slightly damaged, leading to a lower efficiency, or they may be from someone who doesn’t want some or all of their panels anymore. No matter the reason for the sale, used solar panels can be enticing for their low prices and low-stakes utility in DIY solar projects.

Should you install used solar panels?

While used solar panels can be a good fit for certain types of projects, for the majority of solar customers, they present more problems than they are worth.

There are several hidden costs associated with purchasing and installing used panels:

1. Used panels are often damaged

Damaged or otherwise already used solar panels produce energy at a lower efficiency than advertised. This is because, over time, the output of a solar panel drops incrementally. Many large commercial solar projects will have damaged panels from time to time, and an easy way to minimize financial loss on those panels is to resell them at a discounted price.

2. The solar industry is still evolving and expanding rapidly

This means that new panel technologies are constantly being implemented and sold at rapidly falling prices. Even a used panel in good condition from a few years ago will have outdated photovoltaic technology, and will produce electricity less efficiently than a new panel. For this reason, you end up saving more money over time by opting to install newer, more efficient panels as opposed to paying less upfront for an outdated solar cell model.

3. Availability of solar warranties

Most solar manufacturers will provide both production and equipment warranties when you purchase a solar energy system, guaranteeing that your panels will produce at certain efficiencies and protecting you from physical damage or failure. Used panels don’t always have that luxury attached to them, and you are vulnerable to low production or failure without any kind of coverage plan. Because used panels have already been operating for some time, they are likely producing at a lower efficiency than they began at, as all solar panels will degrade over time. Additionally, there is no good way to verify that used solar panels will even work in the first place, and you might end up purchasing completely broken or unusable equipment.

Used solar panels can be the right fit for some projects

For some homeowners, used solar panels may be a smart purchase. For example, if you don’t want to power your whole home with solar, and instead are looking for a way to charge a small battery, buying a few used panels is a low-stakes, inexpensive way to get your energy. A common way to employ used panels is on boats, where having on-board power can be difficult due to space. Mounting a couple used panels on your boat’s canopy will give you enough energy to power a cellphone or an extra light while you’re out on the water without having to worry about damaging new equipment.

Outfit your home with the perfect solar setup

If you are looking to install a solar system on your roof, as a carport, or as a ground mount system, buying used solar panels can cause more problems than they solve. Fortunately, on the EnergySage Solar Marketplace, you can solicit quotes from verified installers at competitive prices. If finding the lowest price for solar is your priority, simply make a note on your account that you are looking for inexpensive options, and installers will know to tailor their quotes to your preference.

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Categories: Buyer's Guide

About Jacob Marsh

Jacob is a researcher and content writer at EnergySage, where he focuses primarily on current issues–and new technology!–in the solar industry. With a background in environmental and geological science, Jacob brings an analytical perspective and passion for conservation to help solar shoppers make the right energy choices for their wallet and the environment. Outside of EnergySage, you can find him playing Ultimate Frisbee or learning a new, obscure board game.

20 thoughts on “Used solar panels: are they right for you?

  1. Ronald Scott

    I have 10 bp375J 75 watt solar panels in great condition I inherited these when a family member died.
    They appear to be in excellent shape and were stored inside when I got them They all have mounting brackets on the back side of them would like to sell them all together Also 3 others that are the same size (two are bp and one is siemens) cant find model # I think they are older

  2. Jo

    I have a 9.9Kw system that I would consider selling. It works great–saves me about $2K/year, and warranted for another 17 years. I want to move and I need to replace the roof. I was thinking that I might be better off selling the panels, replacing the roof and then selling my house. Anyone interested?

  3. Robert Frantz

    Our deal with Sun Run includes the option to buy the Norwegian solar panels at market value any time after 5 years. I would like to own the system.
    What are your thoughts

  4. Bobby

    I have a 5kw system still in use I would consider selling for the right price. SMA technology duel inverters (sunny boy and Island) 25 panels (200 W) roof mounted. Battery back up (8-12V solar bank)
    Still in service and will remain that way until sold.


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