I do have a fully solar powered VPN gateway/LTE router/web server/Wi-Fi relay - in my case, it’s out of necessity, as I live in a deep valley, and the only way I could get internet access here was to stick a mast on top of a hill with an IP67 box of goodies and a solar panel and battery, and an LPDA and yagi antenna for LTE and 802.11n respectively. The web server isn’t public, but fulfils a few important functions for me.
Sounds like our local ham relay station. On the top of the mountain, solar and deep cycle batteries, and a radio relay. All housed in a cheap little shack.
I was last up there around '98 to help top off the batteries with water, but it's still running strong today.