2026 GRS Gas Storage Inventory
Pipeline

The Facility

Gill Ranch Storage is an underground intra-state natural gas storage facility near Fresno, Calif. It includes a pipeline that links the facility to Pacific Gas & Electric
Company’s (PG&E) mainline transmission system, allowing it to serve customers
throughout California.

  • GRS has the capacity to provide approximately 20 billion cubic
    feet (Bcf) of underground natural gas storage.
  • The facility is located about 25 miles west of Fresno and includes an
    approximately 27-mile, 30-inch pipeline, which is connected to the PG&E
    Line 401 north of Panoche, Calif.
  • The premium storage location offers a unique opportunity to access five
    interconnects.
  • The site was developed in a joint agreement by Gill Ranch Storage, LLC, and PG&E.
  • The site has potential for future expansion.

Storage at Gill Ranch

During the 1980s and 90s, producers extracted natural gas from Gill Ranch. Today, Gill Ranch Storage:
• Uses the dry gas reservoirs located on the ranch for storage.
• Uses moderate water drive reservoirs, reducing the quantity of cushion gas.
• Is a high-deliverability, three-turn facility.

A Premium Storage Location

Gill Ranch is an excellent site for California storage customers. It is:
• Located just off PG&E line 401, at a point on the PG&E pipeline system with distinct locational advantages.
• The farthest south of all independent storage facilities on the PG&E system, offering a unique opportunity to access five interconnects.
• Well positioned to accept natural gas from emerging supply sources as well as to serve new electric generation and growing consumer markets.