On Sept. 23, 2020, Southwest Gas Corp. (SWG) received a rate case decision in Nevada that we expect will support of the company's overall credit quality. In addition, our assessment of the company's financial plan indicates that parent Southwest Gas Holdings Inc. (SWX) can maintain its funds from operations (FFO)-to-debt ratio within the 19%-20% range, while maintaining a manageable growth profile of its higher-risk construction services business over the next two years. We are affirming our ratings on SWX, including the 'BBB+' issuer credit rating, and our ratings on subsidiary SWG, including the 'A-' issuer credit rating. At the same time, we are affirming our 'A-' issue-level ratings on SWG's senior unsecured notes. We are also revising the outlook on