NRG Energy, Inc. – NRG: Involvement in a Previously Undisclosed SEC Investigation Now Appears Over – Removed from Watch List – Documents Received. Recently received documents show the undisclosed SEC investigation of NRG Energy that we’ve been tracking since Apr-2017, was part of a broader probe into use of non-GAAP metrics. An excerpt showing the particular questions the SEC had about NRG’s filings appears in today’s report.