NRG Yield, which was formed to serve as the vehicle for NRG Energy (NYSE: NRG) to operate and acquire contracted conventional and renewable power generation infrastructure, filed on Friday with the SEC to raise up to $400 million in an initial public offering. The Princeton, NJ-based company, which was formed in 2012 and booked $184 million in revenue for the 12 months ended March 31, 2013, plans to list on the NYSE under the symbol NYLD. NRG Yield initially filed confidentially on February 13, 2013. BofA Merril Lynch, Goldman Sachs, and Citi are the joint bookrunners on the deal. No pricing terms were disclosed.