The NRG Inc. 'BB-' corporate credit rating and all issue ratings have been affirmed. The outlook is stable. A 'BB-' rating and '3' recovery rating were assigned to the company's proposed $750 million senior bond issue to finance the acquisition of 3.8 gigawatts of gas-fired assets from Dynegy. NRG's financial profile is expected to be sufficient for the rating through 2012. Management will be challenged to balance the low-commodity-price environment with growth objectives in a credit-supportive manner. Rating does not incorporate nuclear project. On Aug. 17, 2010. Standard&Poor's Ratings Services affirmed its 'BB-' corporate credit rating and all issue ratings on NRG Energy Inc. The outlook is stable. In addition, we assigned our 'BB-' rating to the company's