The Owl - Gizmo that will help you identify how to save energy round the home, save energy / save money
The Owl is a wireless device which measures electricity consumption which costs a tear jerking £50 but is a tool which enables you to conserve energy at home. Have a look at the website.
It just tells you how much energy you are consuming and the cost - what you do to save energy /money is up to you.
PRI a related but different product.