"To own it" bwahahahaaaa

Are you in South Africa? Personally I migrated to Intel NUCs and run virtualization with them. Power wise I have an Inverter and a solar panel as a backup. Inverter handles all the heavy lifting and switching. This system is purely for my electronics. So laptop, servers etc. There is no “cheap” way to do it, but if you do it in stages it can be affordable. If you can, try not to cheap out on the batteries and Inverter. Lead acid based batteries are OK IF you take care of them. Don’t use the cheapest Inverter. It’s not worth the risk of damage.