Now you can cut down on costs and find out what appliances are actually worth keeping plugged in. Simply connect these appliances to the Kill A Watt, and it will assess how efficient they really are. A large LCD display will count consumption by the Killowatt-hour, same as your local utility. You can calculate your electrical expenses by the day, week, month, even an entire year. Also check the quality of your power by monitoring Voltage, Line Frequency, and Power Factor. Now you´ll know if it is time for a new refrigerator or if that old air conditioner is still saving you money.
TED, The Energy Detective which has the advantage to work with Google PowerMeter (a free energy monitoring tool that allows you to view your home's energy consumption from anywhere online.
This device has a simple set up directly from your computer and it's Mac and PC compatible. We love the wireless display and rechargeable batteries.At the end, you could make your own energy meter through the power of do-it-yourself design. The award-winning EnerJar takes the important concept of home energy monitoring, and brings it to the masses in a fun, interactive way through a handy, downloadable DIY design that can be put together using a jam jar and other household objects.