praise the sun \o/
this post was submitted on 30 Mar 2025
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Panels $116 for two, I bought four
For the wiring you need to connect the panels together $36 for three pairs (if you're doing them in parallel like I am, you can skip this step if you design your setup in series and just connect the panels to each other directly)
You'll need an inverter to plug stuff into $41
A battery if you want to save and use electricity at night $190
A controller $12 I bought the cheapest one I could find
The rack $120 I could have made this out of wood for cheaper
Battery to Controller cable $10
Battery to Inverter cable $12
Panels to Controller cable $17
so $640 plus shipping if you buy from Amazon, but a lot of these things can be found in home improvement stores too so maybe shopping around can save you some cash.
How many watts do you get from that?
It’s 400w worth of panels for ~$200. These are newer bifacial panels, so in theory you can get even more than that with the light that hits the back of the panel. Getting around 400w is still like best case scenario on the brighter summer day though. Shade and time of year matter a lot. If you’ve got just one panel covered with just a single leaf - it’ll probably take that panel’s output down to <%20. You won’t see much output during winter or cloudy/rainy days either.