FERC Approves Spindletop Expansion, Positioning Texas Facility as Gulf Coast’s Largest Gas Storage Hub
The federal certificate clears Caliche’s Golden Triangle Storage to add 30.75 Bcf of working capacity in Jefferson County, with construction slated to begin mid-2026.
The Federal Energy Regulatory Commission voted at its March 19 public meeting to issue a certificate of public convenience and necessity to Golden Triangle Storage, LLC, authorizing construction and operation of the Spindletop Expansion Project at its existing natural gas storage complex in Jefferson County, Texas. The approval clears the way for four new salt dome storage caverns and associated surface infrastructure that will add 30.75 billion cubic feet of working gas capacity and 24.2 Bcf of base gas capacity, while increasing aggregate injection and withdrawal capability by 1,000 million cubic feet per day. Owned by Houston-based Caliche Development Partners, the facility is positioned to become the largest natural gas storage hub on the Gulf Coast by both volume and injectability once the expansion reaches full operation.
The FERC certificate arrives at a moment of heightened attention to natural gas storage adequacy along the Gulf Coast. Extreme weather events in recent years, including the devastating 2021 winter storm, exposed vulnerabilities in the region’s ability to maintain reliable gas supply during demand surges. Storage facilities capable of rapid injection and withdrawal serve as critical buffers, allowing pipeline operators and utilities to manage supply imbalances without resorting to curtailments.
Jefferson County sits within the Golden Triangle industrial corridor linking Beaumont, Port Arthur, and Orange—a region dense with petrochemical facilities, LNG export infrastructure, and refining capacity. The expansion therefore strengthens supply reliability for a cluster of energy-intensive industries that depend on uninterrupted gas deliverability. Additionally, the Gulf Coast’s expanding role as a global LNG export hub has increased demand for flexible storage assets that can respond to shifting international market conditions and cargo scheduling requirements.
The project’s scope is substantial. Construction will involve four new salt dome caverns along with a new compressor building housing ten 5,500-horsepower natural gas-driven compressor units, totaling 55,000 horsepower of compression capacity. Caliche acquired Golden Triangle Storage from Southern Company in 2022 and has since pursued a phased expansion strategy. Pending final pre-construction approvals, site work is anticipated to begin in the first half of 2026, with the first cavern expected to enter service in the second half of 2028.
From a regulatory perspective, the FERC certificate represents the culmination of a process that included environmental scoping initiated in May 2025 and a formal environmental assessment completed by FERC staff. The commission’s order also addressed the separate request by Palo Duro Transmission L.P. to operate its existing pipeline as a jurisdictional interstate facility and acquire 80,000 dekatherms per day of firm transportation capacity on a connected gathering system in Texas and Oklahoma—an action that further reflects the commission’s active docket in facilitating natural gas infrastructure development across the region.
Projects of this magnitude carry significant implications for specialized workforce demand in the Gulf Coast energy corridor. The construction phase alone—spanning approximately two years—will require experienced underground storage engineers, salt dome geologists, mechanical and civil engineers, and construction management professionals with credentials in federally regulated natural gas infrastructure.
Once operational, the expanded facility will likely sustain ongoing demand for gas storage operations specialists, pipeline safety compliance personnel, SCADA and instrumentation technicians, and regulatory affairs professionals familiar with FERC compliance obligations. Caliche’s continued expansion trajectory since its 2022 acquisition suggests a sustained organizational growth pattern that may extend to commercial, legal, and asset management functions.
More broadly, the FERC certificate process itself illustrates the depth of regulatory expertise required to advance major energy infrastructure projects. Environmental compliance specialists, land use attorneys, and permitting professionals with FERC-specific experience remain in strong demand as the commission continues to process a robust pipeline of natural gas infrastructure applications across Texas and the broader Gulf Coast region.
Industry observers will monitor several developments in the months ahead. Construction progress on the Spindletop Expansion will serve as a bellwether for the feasibility of large-scale salt dome storage development under current regulatory and market conditions. The project’s timeline—first cavern online by late 2028—will be tested against potential supply chain constraints and labor availability in a Gulf Coast construction market already managing multiple concurrent industrial projects.
At the federal level, FERC’s March meeting agenda signals a commission that remains actively engaged in facilitating natural gas infrastructure approvals, even as it simultaneously addresses grid reliability standards and renewable integration challenges. The parallel approval of the Palo Duro Transmission jurisdictional conversion suggests continued regulatory openness to expanding interstate natural gas transportation capacity. Market participants will also watch whether the expanded storage capacity at Golden Triangle attracts new long-term capacity commitments from LNG exporters, utilities, and industrial consumers seeking to hedge against future supply disruptions.
