I'm on the hunt for parts for my first DIY solar setup, and I've found some used PV panels on Facebook Marketplace that seem like a steal. I'm specifically looking at some 290w panels priced at $50 each. The seller claims they are about 10-12 years old, commercial grade, and came from a recently decommissioned system, with another potential 13-15 years of life left. I'm trying to keep my overall project budget under $5k and still achieve an output of over 4kWh. I'm also considering using a Nissan Leaf battery pack I have lying around for storage.
My concern is whether or not these used panels are a good deal in the long run since I suspect they might not qualify for tax credits. Could I still save my receipts for other components like inverters and wiring? What are your thoughts?
3 Answers
Buying new panels is definitely a safer bet. When you go for new ones, you usually get a warranty, plus they often have better efficiency—around 400w per panel nowadays. Those used 290w panels could be down to around 240w after years of use, so you'd need more panels to get the same output. Sure, the price may seem appealing, but consider the additional costs for more wiring, mounts, and space. If you're open to it, check out refurbished battery options too; you can find good deals online.
It's true that you won't qualify for tax credits on used panels. However, the good news is that you can still get tax credits for everything else like your inverter and wiring, which is helpful. If you're ground mounting and have ample space, then maybe used panels could work, but if you're roof mounting, you might end up spending more in the long run. Think about how much roof space you have to work with; if it’s limited, new panels might be the best option.
I have a ton of roof space, so I'm good in that area. It's just the logistics of getting them up there!
Honestly, it all boils down to finances. While the cheap price of those 290w panels seems tempting, keep in mind they'll have lost some efficiency. Newer models like the 400w will give you much more bang for your buck, especially when you factor in the warranty and lower maintenance. Plus, if you find new panels that include mounting hardware, that could save you some extra cash! Just be cautious with used batteries; they can be hazardous if not handled correctly.
I’ve heard those car batteries can be really risky. I'll look into safer battery options!
This sounds like the way to go! Thanks!