Remember Bloom Energy servers, those low-cost, energy-efficient fuel cells born out of a scrapped NASA project? The company made a splashy debut last year, starting with a spot on 60 Minutes and a long list of early-adopting corporate heavyweights like FedEx, Walmart, Google, Coca-Cola, Staples, and eBay. Since then, we haven't heard much from the company, but today she's back -- AT&T says it will be the first telco to use these refrigerator-sized servers to power its operations. For now, the company's planning on using the technology to run 11 sites in California, a move AT&T says will cut its carbon dioxide emissions in half and virtually eliminate SOx, NOx, and other smog-forming particles. All told, its servers should produce 62 million kWh of power annually -- once all of these servers are fully up and running sometime in the middle of next year, that is. We say good on AT&T, though we'll really be stoked when these things start lighting up more average Joe homes.