What is the latest status of the project “Transwestern Pipeline Southwest Expansion Project”?

The status recorded for “Transwestern Pipeline Southwest Expansion Project” is planned.

Where can I verify the source and access all details for “Transwestern Pipeline Southwest Expansion Project”?

This Taiyo project page references Arizona Capitol Times along with the original URL (https://azcapitoltimes.com/news/2025/08/07/aps-joins-gas-pipeline-expansion-walks-back-clean-energy-promises/). Taiyo standardizes official data into a consistent, searchable project profile.

Transwestern Pipeline Southwest Expansion Project

Q: Who are the main government, EPC, and private stakeholders for “Transwestern Pipeline Southwest Expansion Project”?

Taiyo maps the stakeholders of “Transwestern Pipeline Southwest Expansion Project”: government bodies (City of Mesa).

Sector: Power Generation (CCGT) • Location: Arizona, United States

Source: Arizona Capitol Times

Project

Planned

The Transwestern Pipeline's southwest expansion project is a natural gas pipeline expansion expected to bring natural gas from Texas into Arizona by late 2029. Arizona Public Service (APS), Salt River Project, Tucson Electric Power, UniSource Energy, and the City of Mesa are joining this expansion to support the state's growing energy needs.

Status: Prospective
Sector: Power Generation (CCGT), Natural Gas, Government, Warehouse
Location: Arizona, United States of America
Updated: 22 Jul 2026
Source: Arizona Capitol Times

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Project Information

4 Q

The project “Transwestern Pipeline Southwest Expansion Project” is an infrastructure initiative in the Power Generation (CCGT) sector, located in Arizona, United States. Taiyo aggregates data on it from Arizona Capitol Times.

Participants

Sponsoring Agency

Status

Original status	planned
Taiyo status	Prospective
Taiyo last update	2026-07-22

Contact

Not available for this record.

Description

Description	The Transwestern Pipeline's southwest expansion project is a natural gas pipeline expansion expected to bring natural gas from Texas into Arizona by late 2029. Arizona Public Service (APS), Salt River Project, Tucson Electric Power, UniSource Energy, and the City of Mesa are joining this expansion to support the state's growing energy needs.
Original sector	Energy

Location

Country	United States of America (USA)
State	Arizona

Source

Source	Arizona Capitol Times
URL

More Details

Record type	Project
Sector	Power Generation (CCGT), Natural Gas, Government, Warehouse
Article published date	2025-09-16

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Transwestern Pipeline Southwest Expansion Project

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