Rankin County, Mississippi v. Mississippi Public Service Commission and Entergy Mississippi, LLC

Summary

The court affirmed the Commission’s order approving Entergy’s annual and interim rate adjustments. It held that excluding unbilled revenue from operating income was a reasonable exercise of the Commission’s regulatory discretion supported by substantial evidence, and that Rankin County’s additional appellate challenges were waived because they were not raised before the Commission. The court also concluded that the Formula Rate Plan’s plain language authorized two separate four-percent revenue caps.