The founder of Drupal posted recently about this self-hosted and completely solar-powered personal site he made, in Boston of all places.

He describes the hardware, software, and the challenges he ran into while setting it all up. The site even includes automatically updating statistics about the system and battery. There's no backup or fail over, so if the battery drains due to cloudy or cold weather, the website will simply go offline for a while and he's fine with that.