https://solar.lowtechmagazine.com/ this website has a similar approach
I'm excited to share an experiment I've been working on: a solar-powered, self-hosted website running on a Raspberry Pi. The goal was to use the smallest, most energy-efficient setup possible, even if it means the website goes offline sometimes. Yes, this site may go down on cloudy or cold days. But don't worry! When the sun comes out, the website will be back up, powered by sunshine. https://dri.es/my-solar-powered-and-self-hosted-website
