A White House initiative, the Green Button, encourages utilities to share information on energy usage with residential and business consumers at the click of a button, and the Green Button is attracting a growing number of utilities nationwide, reports Katherine Tweed at greentechgrid. It appeals to all utility customers, and commercial customers in particular, because such information illustrates ways to save energy. The company Retroficiency took a year’s worth of Green Button data for a commercial building and using its virtual energy assessment found that the building could reduce consumption by one-third through a variety of retrofits, for example. Other companies, such as EnergyAi, are using apps. For one office building, EnergyAi’s app found that leaving equipment on at night and over the weekends was costing an extra $9,000 per year. EnergyAi is one of the companies that has already developed an app leveraging Green Button data. Indeed, app development that leverages Green Button data is perhaps the most important part of this initiative. The U.S. Department of Energy is running an apps competition for the best apps that help utility customers maximize their Green Button data.