The cheap alternative to a smart meter

I naturally gravitate to hi-tech, which is why I hanker after a fully-fledged smart meter to track my electricity guzzling at home. Sadly, the main real world product so far is the Electrisave, which'll only tell you your total consumption. This lo-fi £29 Powermeter from CAT, however, works simply by inserting itself between your mains and a gadget - a fridge, say - and displaying how many watts that device is quietly eating. A quick visit to Uswitch for eleccie prices, one minute on a calculator and you'll soon discover what's bumping your bills up.