...Fitch Ratings has affirmed The Williams Companies, Inc.'s (WMB) Long-Term Issuer Default Rating (IDR) and senior unsecured rating at 'BBB' following its announced acquisition of Momentum Midstream (Momentum). Fitch has also affirmed the Short-Term IDR and CP rating at 'F2'. Fitch has affirmed the Long-Term IDR and senior unsecured ratings for Transcontinental Gas Pipeline Company (Transco), Northwest Pipeline (NWP), and MountainWest Pipeline (MWP) at 'BBB+'. The Rating Outlooks for all companies are Positive. Fitch could upgrade the ratings with a Stable Outlook if and as the power projects are completed and commissioned, begin generating revenue, and demonstrate that they can meet stringent availability requirements. Fitch will likely affirm the ratings with a Stable Outlook if there are any delays, operating or financial setbacks associated with WMB's growth spending, particularly on power projects, and if leverage is expected to be above Fitch's forecast....
