Aerospace Research Campus Transmission Project

The Arizona Corporation Commission voted on January 9, 2024 to approve the Certificate Environmental Compatibility.

• Aerospace Research Campus Transmission Project – ACC Order Approving CEC

Transcripts

The Arizona Power Plant and Transmission Line Siting Committee voted to approve TEP's application for a Certificate of Environmental Compatibility at a public hearing held in December 2023.

• Certificate of Environmental Compatibility (approved by Committee on Dec. 5, 2023)
• Hearing (Day 2) — Dec. 5, 2023
• Hearing (Day 1) — Dec. 4, 2023
• Virtual Tour of Proposed Route— Dec. 4, 2023
• Prehearing Conference — Nov. 11, 2023
• Application for Certificate of Environmental Compatibility— Oct. 20, 2023
• Prefiling Conference Transcript— Oct. 12, 2023

Proposed Route Map:
PDF  |  Interactive Map

The transmission line will be built over an approximately 1.5-mile area, extending service to the proposed switchyard.

Service for growing energy needs. New infrastructure will help meet customers’ current and future energy needs. The new line will tie into TEP’s 138 kV transmission system to accommodate increasing energy demands.

Support for job growth and economic development. TEP works closely with commercial customers to support their electric needs. New transmission facilities will support new commercial businesses at the Aerospace Research Campus, including American Battery Factory ’s official headquarters and its first battery cell gigafactory in the United States. The factory, which will be located south of South Raytheon and South Aerospace parkways, will produce lithium iron phosphate battery cells and has long-term plans to add 1,000 jobs to the region.

Throughout the line siting process, TEP encouraged residents, property owners and other stakeholders to participate in the line siting process by attending public open house meetings, filling out an online comment form, sending letters or calling a project hotline to offer comments and ask questions.

Outreach and open house materials are available below.

• Public Notice — Oct./Nov. 2023
• CEC Hearing Postcard — Nov. 2023

Mailings

• Newsletter No. 1 — July 2023
• Public Open House Postcard — Sept. 2023

Presentation

• Agency Briefing Presentation – July 2023

July 27, 2023

• Welcome
• Purpose and Need
• How Power Gets to You
• Study Area and Preliminary Segments
• Typical 138 kV Dual Circuit Monopole
• Process Flow Chart
• Opportunities and Constraints
• ACC Considerations

Sept. 14, 2023

• Welcome
• Purpose and Need
• How Power Gets to You
• Proposed Route
• Typical 138 kV Dual Circuit Monopole
• Suitability Factors Composite
• Process Flow Chart
• Opportunities and Constraints
• ACC Considerations