Opower Introduces Opower 4 Utility Customer Engagement Platform Leverages Big Data to Drive Large Scale Energy Efficiency and Increase Customer Satisfaction Opower announces the availability of Opower 4, a customer...

Gmail vs. Yahoo Mail Users: Who Spends More on Electricity? ARLINGTON, Va., June 14, 2012 (GLOBE NEWSWIRE) -- Yahoo Mail users will spend $110 more this year on electricity compared to Gmail users according to Opower, the global leader in energy information...