After we lowered our assumption on cost escalation at Yellowstone Energy L.P. (YELP) based on our analysis of historical trends, minimum coverage in our revised forecast increased to 1.71x from 1.68x. As a result of this improvement, as well as our expectation that minimum coverage could rise further, we raised the rating one notch on YELP's $131.5 million senior secured notes due 2026 to 'BBB' from 'BBB-'. The stable outlook reflects our view that minimum coverage under our base-case forecast will likely remain around 1.7x-2.0x during the next two years. It also reflects the stable outlook on NorthWestern Corp. (BBB/Stable/A-2), doing business as NorthWestern Energy, the off-taker for YELP's electricity; our rating on NorthWestern Energy now caps our rating on