Our house is always around 400 watts. So if we're using more than that, we can go around the house and see what's taking up extra power. Bankrate.com: How much were the plug-in timers?

Typical household energy bills have now risen by over £500 a year, but a plug-in timer could help you cut costs.

The plug clickety-clicks around, just like setting a kitchen timer, and then starts ticking back down to zero.