My previous electric kettle used to guzzle electricity and didn't have a water level indicator on it so we always boiled too much. I bought a new Kenwood that shows the number of cups instead of just 1/4 litre, 1/2 litre etc and have already seen a big difference in our bill. I would recommend it, here is the link
http://www.argos.ie/static/Product/p...LE+KENWOOD.htm