Power Brownouts

Hi Group,
I live in an area where occaisional disruptions occur to the electricty power grid. Is there any way to protect cnc machines from a power failure when part way through a machining cycle. A UPS is practical for the computer itself but the high cost of a very large unit to accomodate the routers (and dust collectors) isnt practical.

I want to prevent damage to the machine and the job in progress.
And hopefully be able to restart at the point where the machining was interupted.
Regards
Bob Thomas