Did it myself and felt a bit foolish until I saw next door doing it too!
We are currently sitting in candlelight (until about half ten according to National Grid) and the first thing I did when the power went off was to stick my head outside the front door to check it was the whole street and not just us. DD thinks I am a bit mad for doing it, I think it is perfectly normal!
Also, I open the curtains as you do get some light in that way from the moon, she also thinks that is mad as its dark outside. Wont concede that the lounge is a little bit lighter with them open, even though it clearly is!