[OSM-newbies] How to tag Solar Hot Water panel?

[Alan & Ruth Bragg]

The Everglades National Park has large solar hot water arrays that provide
hot water to the restrooms at Flamingo. The panels are mounted on
 structures about 20 feet from the restrooms.
I cannot find an appropriate tag. Can anyone help. It seems to me there
must be thousands if not millions of solar hot water panels in the world.

Thanks
Alan Bragg
51 Hancock St
Bedford MA 10730
339-545-1737 mobile
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