I am using the UPS (uninterruptible power source) that I had for my desktop system. Now I use a laptop so thought I would keep it for my Ellisimo. Where I live, the power is supplied by some little hamsters on exercise wheels and when they take a break, usually once or twice a day, our power flickers or goes out just long enough to have to reset all the clocks!
Also did you know that the surge protectors typically bought (cheaper ones like from Wal-Mart) are usually no good after they have been hit by one surge? That is what I was told by an electrician.