Homemade solar panels
You can save a ton of money being your own installer, renewable energy is a future field and you can help the planet at the same time.
The first thing you must do is find a good guide even if it cost more it can also save you a lot of money in the long run.
Also you can find online a lot of free information about building solar panels.
You shouldn’t buy broken solar cells, choose a high quality backing material given that your solar panels are expected to last 25-40 years, you want to make sure your backing material lasts that long as well.
The final wiring can be tricky and you’ll need a professional electrician.
You have to keep your system charged if you use batteries.
Keeping your batteries 50-80% charged will give them longer lives.
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