Silver Spring Networks, a maker of components and networking gear for smart grids, is filing for...

|By:, SA News Editor

Silver Spring Networks, a maker of components and networking gear for smart grids, is filing for a $150M IPO under the ticker SSNI. Silver Spring's revenues have soared from $3.3M in 2009 to $70.2M in 2011, but the company warns of remaining unprofitable for some time. Three customers accounted for 91% of Silver Spring's 2010 revenues.