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Rocky Mountain Power Seeks $4.1M ECAM Recovery

Rocky Mountain Power, a division of PacifiCorp, has applied to the Idaho Public Utilities Commission requesting authorization to recover approximately $4.1 million through the Energy Cost Adjustment Mechanism (ECAM), which would result in a corresponding 0.7% decrease to Schedule No. 94 rates. The Company also proposes returning $1.4 million in renewable energy credit revenue to customers under Schedule No. 98, corresponding to a 0.4% decrease in those rates. The Commission is accepting written comments until May 8, 2026, and reply comments until May 15, 2026.

Rocky Mountain Power and Idaho Power Seek Certificates of Public Convenience and Necessity for Gateway West Segment E-8 Transmission Line

Rocky Mountain Power and Idaho Power have filed applications with the Idaho Public Utilities Commission seeking certificates of public convenience and necessity for Segment E-8 of the Gateway West project, a 500-kilovolt transmission line from the Midpoint Substation near Jerome, Idaho to the Hemingway Substation near Melba, Idaho. The segment is designed to provide 2,000 megawatts of additional transmission capacity and deliver energy to the Treasure Valley. Idaho Power will hold 99 percent ownership while PacifiCorp holds 1 percent. Construction is scheduled to begin in October 2027.

IIPA Granted Intervention in Idaho Power Gateway West Transmission Case

The Idaho Public Utilities Commission granted Idaho Irrigation Pumpers Association's (IIPA) petition to intervene in consolidated cases IPC-E-26-09 and PAC-E-26-06, involving Idaho Power Company and PacificCorp d/b/a Rocky Mountain Power's applications for Certificates of Public Convenience and Necessity for Segment E-8 of the Gateway West 500-kV transmission line. The order requires all parties to comply with Commission Rules 71-75 and 222-223, and to serve all future filings on all parties of record including IIPA's designated representatives.

Utah Electrical Interconnection Rule R746-312 Amendment Investigation

The Utah Public Service Commission opened Docket No. 23-R312-01 to investigate possible amendments to Utah Administrative Code R746-312, which governs electrical interconnection standards. Multiple stakeholders have filed comments, including Rocky Mountain Power, Utah Clean Energy, Vote Solar, Western Resource Advocates, the Division of Public Utilities, and the Utah Rural Electric Cooperative Association. The most recent filing is a motion dated April 21, 2026 from Utah Clean Energy and Vote Solar to establish a process to amend the rule.

Rocky Mountain Power - Order No. 37003 - $6.0B Debt Authority Extension

The Idaho Public Utilities Commission issued Final Order No. 37003 approving Rocky Mountain Power's application to increase and extend short-term debt authorities through May 31, 2031. The Commission authorized the utility to borrow up to $3.0 billion in short-term debt and $3.0 billion under other borrowing arrangements, for a combined total of $6.0 billion. The authority is conditioned on the Company maintaining investment-grade senior secured debt ratings with S&P (BBB-) or Moody's (Baa2).

Katana Electronics Formal Complaint v Rocky Mountain Power - Electric Utility Dispute

The Utah Public Service Commission opened Docket No. 26-035-21 on April 14, 2026, accepting a formal complaint filed by Katana Electronics against Rocky Mountain Power, an electric utility company. The docket includes an action request due May 14, 2026. Supporting materials include an exhibit containing an email from Rocky Mountain Power Customer Advocacy and the underlying informal complaint. The formal complaint and certain attachments are designated confidential.

Rocky Mountain Power Net Metering Report, Public Comments

The Utah Public Service Commission maintains a docket page for Rocky Mountain Power's Customer Owned Generation and Net Metering Report (Docket No. 18-035-28), providing links to public comments filed from 2019 through 2026. The page serves as an informational repository for stakeholder input on net metering policy and customer-owned generation issues.

Idaho Power and Rocky Mountain Power CPCN Application for Gateway West Segment E-8 Transmission Line

The Idaho Public Utilities Commission issued Order No. 37010, a Notice of Application, informing the public that Idaho Power Company and PacifiCorp d/b/a Rocky Mountain Power have applied for a Certificate of Public Convenience and Necessity (CPCN) to construct Segment E-8 of the Gateway West 500-kV transmission line. Segment E-8 is a 133-mile 500-kV line from the Midpoint substation near Jerome, Idaho to the Hemingway Substation near Melba, Idaho, adding 2,000 megawatts of transmission capacity. The Commission sets a 21-day intervention deadline for interested parties.