@3e418f69 @a79223b6 I had a similar use for it a while ago - we were suffering from numerous short power cuts and I was able to provide exact dates and times to the supplier of every outage and prove to them it was as bad as I was claiming! 

 @843653f8 @3e418f69 @a79223b6 I used it to find out the times our electric kept tripping, and then managed to work out what the cause was.