Power a Raspberry Pi Zero from the sun? You can do it.
20171013/DuckDuckGo raspberry pi zero continuous solar power
20171013/https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=192481
Raspberry Pi Zero is still limited to one per customer, unfortunately.
20171013/https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=188011 20171013/https://www.geeky-gadgets.com/power-your-raspberry-pi-zero-from-the-sun-using-the-solar-pi-platter-07-07-2016/