Meters monitor how much electricity is being consumed then you are able to see the running cost of almost any item, you can then determine how often and how you may use it. Power controllers can be used to switch off standby power, timers can be installed to reduce the time an item may need to be on. All of these items once installed will benefit your energy efficiency and will save you money in the long run. These devices are continually being updated with advancing technology. More information on Energy meters & products www.wattsclever.net.au.