NEW YORK (Standard&Poor's) Jan. 21, 2014--Standard&Poor's Ratings Services said today that it assigned its 'BB-' issue rating to NRG Energy Inc.'s $1.1 billion senior unsecured notes due 2022. We also assigned our '3' recovery rating to the debt. With this debt issuance, Princeton, N.J.-based NRG has about $9.2 billion of long-term recourse debt. Nonrecourse debt on the balance sheet is about $8.52 billion. The outlook is stable. Our ratings reflect NRG's announcement that it will acquire substantially all of Edison Mission Energy's (EME) assets for $2.635 billion ($1.59 billion net of $1.06 billion of retained cash). NRG proposes to fund the acquisition with $350 million of equity, about $1.6 billion of NRG and EME unrestricted cash,