Facebook has just formed an odd partnership with Opower, launching a new social energy app that taps into technology from the National Resources Defense Council and Opower.

At first, the app will reach around 20 million households and it designed to help the eco-friendly among us add up and benchmark usage data to see how their homes fare against others. Within territories with utility participation, people will be able to connect their utility account directly to the app to track progress and share energy saving accomplishments with friends.

Sadly, the whole process is quite manual for the time being. However, it is quite possible to start Opower tracking without a Facebook account.