There are a lot of options to monitor your current watt usage and we gather some for you to check them out. The first one is the Conserve Insight from Belkin, which is an affordable option at only $30.
Using a lamp plugged into the Conserve Insight Energy Use Monitor, measure the cost to operate a regular bulb, as well as the CO₂ produced and watts. Then change to a compact fluorescent (CFL) bulb, and compare to find out the difference in energy used, CO₂ and cost. We featured a similar product from Belkin in the past but this one seems more complete and interactive.
Also, Kill-a-Watt, offers a similar solution with a large display and a cumulative killowatt/hour monitor. 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.