itwbennett writes "The goal of saving $3 billion by closing 1253 data centers is 'very realistic,' says David Powner, director of IT management issues at the U.S. Government Accountability Office — except that agencies haven't been able to track cost savings for the initiative. Eighteen months from the 2015 deadline, 'we have no idea how much we've saved the taxpayers,' said Steve O'Keeffe, founder of MeriTalk, an online community for government IT issues. This isn't the first snag in the project. Almost a year ago, Slashdot reported that the project was woefully behind schedule."
The government released a summary of what data they do have
(PDF), and at least the DoD expects to save $575 million next fiscal year. Also see the full GAO report