# 2026-15883: Texas gas caverns go supersize: 50% more storage incoming

2026-15883, Tres Palacios Gas Storage LLC; Notice of Application and Establishing Intervention Deadline, is a Federal Register notice from Energy Department, Federal Energy Regulatory Commission published 2026-08-05, effective 2026-08-05; PRIA reads it as touching household money (as of 2026-08-12).

- Canonical: https://policyrisk.com/federal-register/2026-15883
- As of: 2026-08-12
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-15883
- Title: Tres Palacios Gas Storage LLC; Notice of Application and Establishing Intervention Deadline
- Type: Notice
- Agencies: Energy Department; Federal Energy Regulatory Commission
- Citation: 91 FR 50523
- Published: 2026-08-05
- Effective: 2026-08-05
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-08-12

## In one line

Texas gas caverns go supersize: 50% more storage incoming

## Summary

Tres Palacios Gas Storage LLC wants to expand its Texas gas storage by adding three new giant caverns, new pipelines, and powerful compressors. This upgrade will boost their storage capacity by over 50% and speed up gas injection by 650 million cubic feet daily. If you’re interested, you’ve got until a set deadline to speak up or join the process—this could impact local energy storage and market rates.

## Effects PRIA read

- Large Texas Gas Storage Expansion: mixed, high. Tres Palacios proposes to build three new salt‑dome gas storage caverns (Smith Caverns 5, 6, and 7) by converting brine caverns with a total of about 24.8 billion cubic feet (Bcf) of working gas and about 8.93 Bcf of base gas, roughly 33.73 Bcf total for the three caverns. The company says the Proj…
- Request to Keep Market-Based Rates: cost, medium. In its application, Tres Palacios requests reaffirmation of its authorization to charge market-based rates for its services for the Smith Cavern Expansion Project. The request is part of the materials filed with FERC in docket CP26-556-000.
- Deadline to Comment or Intervene: benefit, low. If you want to file comments, protests, or a motion to intervene in the FERC review of this project, you must do so by 5:00 p.m. Eastern Time on August 21, 2026. Filing comments or motions to intervene has no fee; timely intervenors become parties with the right to request rehearing of Commission o…
- Clean Water Act Section 401 Needed: benefit, low. Tres Palacios states that a Clean Water Act section 401 water quality certification is required from the Railroad Commission of Texas for the Project and should submit the request date and either the certifying agency's decision or evidence of waiver to FERC. The company must provide that certifica…
- FERC Environmental Review Timeline: benefit, low. The notice states that within 90 days of this Notice, FERC staff will either complete its environmental review and place it in the public record or issue a Notice of Schedule for Environmental Review, which will include the anticipated date for the final environmental impact statement (FEIS) or env…

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## Sources
- [2026-15883 on federalregister.gov](https://www.federalregister.gov/documents/2026/08/05/2026-15883/tres-palacios-gas-storage-llc-notice-of-application-and-establishing-intervention-deadline)
- [2026-15883 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-08-05/pdf/2026-15883.pdf)

## Related
- [Previous: 2026-15882, Pacific Gas and Electric Company; Notice of Availability of Environmental Asses…](https://policyrisk.com/federal-register/2026-15882)
- [Next: 2026-15884, Columbia Gas Transmission, LLC; Notice of Availability of the Environmental Ass…](https://policyrisk.com/federal-register/2026-15884)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-15883 (as of 2026-08-12).