Opportunity

Federal Register #PF26-9-000

FERC Solicits Comments on Desert Southwest Expansion Project (Transwestern Pipeline Company, LLC)

Buyer

Federal Energy Regulatory Commission

Posted

July 09, 2026

Respond By

August 05, 2026

Identifier

PF26-9-000

NAICS

237120, 486210

The Federal Energy Regulatory Commission (FERC), under the Department of Energy, is soliciting public comments on the environmental aspects of the Desert Southwest Expansion Project proposed by Transwestern Pipeline Company, LLC. - Government Buyer: - Federal Energy Regulatory Commission (FERC), Department of Energy - Project Overview: - Desert Southwest Expansion Project by Transwestern Pipeline Company, LLC - Construction and operation of major natural gas infrastructure across Texas, New Mexico, and Arizona - Key Infrastructure Components: - 526.5 miles of 48-inch-diameter mainline pipeline - 13 lateral pipelines totaling 181.5 miles - Eight new compressor stations - Modifications to two existing compressor stations - 26 new meter stations - Valves and pig launchers/receivers for pipeline maintenance - Project Purpose: - Provide up to 2.3 billion cubic feet per day of firm natural gas transportation from the Permian Basin to delivery points in New Mexico and Arizona - Includes upgrades for bi-directional flow on the Phoenix Lateral - Notable Requirements: - Public and agency input on environmental impacts, alternatives, and mitigation measures - Scoping sessions (in-person and virtual) to gather feedback - OEMs and Vendors: - Transwestern Pipeline Company, LLC is the project proponent; no other OEMs or vendors are specified - No specific product part numbers or detailed vendor lists are provided in the notice

Description

The Federal Energy Regulatory Commission (FERC) and the Department of Energy (DOE) are requesting comments on environmental issues related to the planned Desert Southwest Expansion Project by Transwestern Pipeline Company, LLC. The project involves construction and operation of a 48-inch-diameter mainline pipeline, lateral pipelines, compressor stations, meter stations, and other facilities in Texas, New Mexico, and Arizona. The expansion aims to provide firm transportation service of up to 2.3 billion cubic feet per day of natural gas from the Permian Basin to customers in New Mexico and Arizona. Public scoping sessions are scheduled to gather input on environmental concerns and reasonable alternatives.

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