Conditional use · Planning application
Idaho Power substation approved by county planning commission
The substation would occupy about 5 acres, start with one transformer with room for up to three, and reach 120 megawatts at full build-out. Construction is expected to begin in 2029, subject to conditions on dust, noise, drainage and screening.
From the filing
The application's description as it appears in Ada County's record. See the official record
Idaho Power Company has applied for a conditional use permit and master site plan to build the Eisenman Electrical Distribution Substation on an 8.36-acre property off S Eisenman Road in southeast Ada County, southeast of the Boise Airport. The substation would occupy about 5 acres, start with one transformer with room for up to three, and provide up to 120 megawatts at full build-out. Staff recommends approval, and construction is anticipated to begin in 2029.
An application for the approval of a Conditional Use and Master Site Plan for an Idaho Power Electrical Distribution Substation. The property is located at TBD S Eisenman Rd (S1514120025) and contains approximately 8.36 acres in the M3 District; Section: 14, Town: 2N, Range: 2E.
Timeline
March 12, 2026
Ada County Planning and Zoning Commission voted to approve (5-0)
Commission action: Approved; (5-0)
March 12, 2026
Ada County staff recommended approval
March 12, 2026
Approved
Ada County Planning and Zoning Commission: Approved.
March 12, 2026
Public hearing: Ada County Planning and Zoning Commission
March 4, 2026
Document added: Staff report (Planning and Zoning Commission, Mar 12, 2026)
March 4, 2026
Document added: Findings (Planning and Zoning Commission, Mar 12, 2026)
Nov. 21, 2025
Application filed
Documents
Staff reports
- Download Staff report for conditional use and master site plan
Planning staff report on Idaho Power's application for a 138-kilovolt electrical distribution substation on an 8.36-acre split-zoned site, with the hearing set for March 12, 2026.
March 4, 2026 · 144 pages · 24.1 MB · Staff Report
Decisions
- Download Findings of fact, conclusions of law and order
Planning and Zoning Commission findings for Idaho Power's electrical distribution substation conditional use application, covering procedural history, notice, and project description.
March 4, 2026 · 23 pages · 387 KB · Findings