An inexpensive Facebook Marketplace solar listing caught the eye of a first-time DIY shopper.
Here's what to know
In a Reddit post in r/SolarDIY, the original poster described the listing as an 18-year-old, 2-kilowatt setup that worked out to roughly 20 cents per watt for the panels and included racking, trim, and an inverter.
"I … would appreciate feedback before I buy anything," the OP wrote.
According to the post, the seller was offering 12 Sharp panels and claimed the system was still functioning after losing less than 13% of its output.
Despite the seemingly low ask, commenters worried that this old gear wouldn't be reliable.
"I would not touch this system unless it were free and I had an off-grid/no permit place to install them," one commenter wrote.
Labor and add-on costs were another sticking point.
"You're looking at roughly $1k - $2k to install this equipment DIY with permits, wire, and misc consumables," another person said.
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More background
Secondhand solar equipment is not useless in every case. It can still fit limited off-grid projects like a shed or a camper. For a house that does need a grid connection, though, older components are often a tougher sell.
The math can get worse once you factor in the age of the hardware. A warranty on removed equipment may provide little real protection, and some products may no longer satisfy local rules.
A bad deal can wipe out the savings people expect from lower utility bills and add stress during permitting and installation.
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What can be done?
The OP later edited the post to say, "Thank you all for steering me away from this!!"
And if you're ever in a similar situation, one commenter advised, "Do your research!"
Price comparison tools can make that homework much easier. EnergySage's solar map shows the average cost of a home solar panel system on a state-by-state level, along with solar incentives available in each state. Together, those resources can help homeowners get the best price for rooftop solar panels and access available incentives.
Adding battery storage to a solar setup is also one of the best ways to save money on energy and go off grid. Homeowners who want to pair solar with backup power can explore EnergySage for information about home battery storage options, including competitive installation estimates.
EnergySage can be especially useful because, with its help, the average person can save up to $10,000 on solar purchases and installations.
Where can I learn more?
Other people have also considered the tradeoffs behind cheap used solar gear and the costs that can come with a solar install.
• Homeowners have learned costly solar scams can drain tens of thousands from rushed deals.
• Facebook Marketplace shoppers have found used panels are not always the bargain they seem.
• EnergySage says solar panel costs depend on equipment, labor, and local markets.
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