Great Basin Gas Transmission Ends $1.7B Open Season

SECAUCUS, NJ (DTN) – Great Basin Gas Transmission Company announced Monday (12/08) it had successfully closed its second supplemental binding open season and executed associated binding precedent agreements for its natural gas expansion project in Northern Nevada.

The wholly owned unit of Southwest Gas said the action secured long-term transportation commitments for capacity requests totaling nearly 800 million cubic feet per day.

The second open season, which followed earlier rounds to accommodate strong and continued shipper interest, supports a planned expansion carrying an estimated capital investment of approximately $1.7 billion.

The company currently anticipates a phased capital spending schedule, with roughly 20% expected in 2026, 25% in 2027, and the remaining 55% in 2028, leading to an expected in-service date of November 1, 2028, provided the Federal Energy Regulatory Commission grants approval to construct and operate the Project.

Following the in-service date, the expansion is projected to generate potential annual incremental margin of approximately $215 million to $245 million, reinforcing the company’s existing 898-mile transmission system and enhancing the availability of reliable, on-demand energy in the growing Northern Nevada region.