Pacific Gas and Electric Co. has a Facebook application that lets its customers compete with friends to see who is conserving the most energy.
The app, created by Opower in partnership with Facebook and the Natural Resources Defense Council, "provides insight into individual energy use while fostering friendly competition," PG&E said.
To get started, PG&E customers can visit social.opower.com or search for the "Opower" app on Facebook and connect their utility account.