Bloom Energy unveils the Bloom Box Summary: KR Sridhar, CEO of Bloom Energy touts his new Bloom Box fuel cell at a press event in Sunnyvale, California. The technology is designed to be stacked into small blocks and housed in a unit about the size of a refrigerator. February 24, 2010 -- 16:51 GMT (08:51 PST) Loading... Please wait. Topic: Emerging Tech Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.