
Where I had been living in MD had terribly unreliable power, every time thunder clapped, we ran to heat water, cook our meals wash clothes, etc., because it failed so frequently. Now, living in PA, our power lines are underground, and we rarely lose power. Several years passed w/out an incident. Yet, two days ago, the power failed. I did not even notice until mom came to my door & wondered why/how my lights were still on. Since living in MD, I have been using a UPS to run my table lamp (uses a CFL), & it ran for nearly 2 hours on a tiny 825 VA 600W UPS, even when it also powered my PC until I turned it off.
So, anyway, I did eventually need to use a D-cell powered lantern after the UPS ran down (took at least 1 1/2 hours, though) & nearly finished reading my Frederik Brown scifi book.
While such incidents are rare, I expect to buy another, larger UPS soon, & have already ordered power failure lights that automatically turn on. Using LEDs set on the dim setting, some of these will run for 15 hours. My poor mom was out there in the family room groping around trying to find a flashlight, & I want to avoid that in the future.