In contrast to many high-profile energy projects, the Spindletop gas storage project moved forward relatively quietly through the federal permitting process. However, the first few months of the process will define whether or not the additional gas storage capacity proposed for the area will reach the marketplace.
The initiation of the FERC environmental review process
The process is currently underway for the proposed Spindletop gas storage expansion in Texas, as the Federal Energy Regulatory Commission (FERC) has initiated its environmental assessment of the project.
On October 2, 2025, FERC staff issued an Environmental Assessment (EA) for the Spindletop Expansion Project. The EA signifies the beginning of the FERC substantive review of the project under the National Environmental Policy Act (NEPA). It also indicates that the proposal has progressed beyond the preliminary filing stage to the formal evaluation stage.
Although an Environmental Assessment is not an approval decision, it is a representation of FERC’s preliminary analysis of whether the proposed project may create one or more significant environmental impacts. Additionally, the EA will be used to help FERC determine if adequate mitigation measures exist to mitigate any identified environmental impacts. Ultimately, the EA will guide the Commission’s final determination regarding authorization of the expansion or if additional environmental reviews should be conducted.
The background of the Spindletop expansion
The Spindletop Expansion Project will be a proposed natural gas storage facility located in Southeast Texas. As one of the major hubs for natural gas production, processing, storage, and demand, an expansion of the current Spindletop Storage Facility provides additional gas storage flexibility to the area surrounding major pipeline corridors and large industrial load centers (such as petrochemical facilities and LNG export infrastructure).
Although the FERC’s Commission Actions Letter does not disclose the proposed final capacity of the expansion, it is understood that the expansion will enhance the operational capabilities of an existing gas storage facility rather than introduce a new “greenfield” location.
This approach is reflective of a larger trend in gas storage development. Gas storage developers have sought to expand existing assets to meet incremental demand while minimizing new land disturbance and infrastructure footprint.
The importance of the environmental assessment
The issuance of the Environmental Assessment is a critical juncture for the project. In conducting the EA, FERC assesses potential environmental impacts resulting from land use, water resource availability, air quality, wildlife habitats, and cumulative impacts resulting from construction and operation. Additionally, FERC considers proposed mitigation measures and reasonable alternatives.
To the extent that the developer can clearly identify which issues the regulators consider to be the most relevant, this step allows them to better understand what they need to demonstrate in order to obtain approval. To the extent that stakeholders and the public have an opportunity to review and comment on the analysis prior to FERC making a final decision, the EA provides a unique opportunity to participate in the decision-making process. Like all other natural gas infrastructure projects, the outcome of this process will generally determine whether the project moves forward according to the proposed schedule.
Gas storage expansion in a volatile market
Increased demand volatility in U.S. gas markets has created growing interest in expanding gas storage. Increased power generation needs, industrial consumption, and increased demand for liquefied natural gas (LNG) exports have created greater value to gas storage facilities capable of providing short-term balancing services between supply and demand.
Facilities located along the Gulf Coast are particularly valuable due to their proximity to both supply basins and export terminals. As such, the Spindletop project fits into this context. Additional gas storage capacity in Southeast Texas could enhance flexibility in meeting market demands and improve the overall reliability of the natural gas delivery system during times of peak demand or supply disruptions.
