Make the computers as efficient as possible (strip unnecessary components)... and solar power might work... but it'll be costly.
My uncle is a dealer for solar equipment, he signed up so he could save money on his system he uses on a family cottage on an island near Mass. The system is probably around 4k and can power a small fridge, vacuum, stereo and lights. Even a laptop and speakers for it. There's also 2 water pumps in the house that I believe are powered by the AC he's generating. That said, I think you'd need several times what he's got to power your system.
My uncle is a dealer for solar equipment, he signed up so he could save money on his system he uses on a family cottage on an island near Mass. The system is probably around 4k and can power a small fridge, vacuum, stereo and lights. Even a laptop and speakers for it. There's also 2 water pumps in the house that I believe are powered by the AC he's generating. That said, I think you'd need several times what he's got to power your system.