I'm on a meter, but we moved at about the same time as we had Alice, so I've nothing to compare it to. We got a new washing machine though, and in the back it have rough measures of how much water each type of wash did and how much electricity they used. Using the costs per litre and KwH I worked out that the cheapest wash I could do would only be 14p. The highest cost was about 20p, so I don't think it will be too bad. It's an A rated washing machine which helps a bit I guess. I tend to do a wash every other day now. When she was tiny, it was every day. HTH!