There are plenty of ways to be green these days, but without some sort of feedback it's hard to know just what shade you are. Enter Google's PowerMeter, a service that tells you how much current you're responsible for consuming. Why, it even shades its bar graphs in green, getting more pale the greedier you become. Google has partnerships with some utility companies in the US, Canada, and India, meaning a select few of you can do this sort of tracking by default. The rest of us were left out -- until now. Two devices on the market let you track your usage in PowerMeter regardless of just how backwards your utility company is: The Energy Detective's
