I don’t know where they are, but you can power a small fountain you have in your backyard with very small panels. Depending on the size you can go as small as 20 volts to one that is around 50 watts. I worked for a nonprofit solar energy organization and at events we brought with us a portable fountain to show how a small 20 volt panel can power a fountain, it went over really well with students and kids and people that wanted to see solar in action!
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