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Independent regulatory commissions

Northern Natural Gas Company's Semi-Annual LNG Operating Report Reveals Insights into Facility Operations

Strategic Insights

— 2 min read

Northern Natural Gas Company submitted a semi-annual operating report to the Federal Energy Regulatory Commission (FERC) on August 14, 2025, detailing the operations of its Garner Liquefied Natural Gas (LNG) peak shaving plant for the period January 1 through June 30, 2025. The report provides a comprehensive overview of the facility's design and operating procedures, as well as its operating history and future planning projects.

The report highlights several significant events and activities during the reporting period, including a grade 3 underground gas leak that was discovered on April 29, 2025, and repaired on May 5, 2025. The facility also experienced two instances of vapor release, totaling 0.045 MMSCF, due to a utility power outage and a grade 3 underground gas leak. Additionally, the report notes that there were no security-related issues, unloading/loading problems, or hazardous conditions from off-site vessels during the reporting period.

The liquefaction system operated 186 days during the reporting period, with the most significant shutdowns occurring on February 20, 2025, due to a high differential temperature across turbine bearings, and on April 7, 2025, due to a failed transmitter on the refrigerant compressor. The report also highlights the facility's offloading activities, with 183.956 MMSCF withdrawn from the tank, and the loading of 244 trucks.

The report also outlines several future planning projects, including the replacement of the vaporizer water bath discharge line, the installation of a plant fuel gas heater, and the installation of a new generator for the facility, all scheduled for completion in August 2025.

Key Takeaways:

  • The Northern Natural Gas Company submitted a semi-annual operating report to FERC on August 14, 2025.
  • The report details the operations of the Garner Liquefied Natural Gas peak shaving plant for the period January 1 through June 30, 2025.
  • The facility experienced a grade 3 underground gas leak on April 29, 2025, and repaired on May 5, 2025.
  • The facility experienced two instances of vapor release, totaling 0.045 MMSCF, due to a utility power outage and a grade 3 underground gas leak.
  • The liquefaction system operated 186 days during the reporting period, with significant shutdowns occurring on February 20, 2025, and April 7, 2025.
  • The facility offloaded 183.956 MMSCF of LNG and loaded 244 trucks during the reporting period.
  • Several future planning projects are scheduled for completion, including the replacement of the vaporizer water bath discharge line, the installation of a plant fuel gas heater, and the installation of a new generator for the facility.

Statistics:

  • 186 days of liquefaction system operation during the reporting period.
  • 2 instances of vapor release, totaling 0.045 MMSCF.
  • 183.956 MMSCF of LNG offloaded from the tank.
  • 244 trucks loaded during the reporting period.
  • 3 major shutdowns of the liquefaction system.
  • 4 future planning projects scheduled for completion, including the replacement of the vaporizer water bath discharge line, the installation of a plant fuel gas heater, and the installation of a new generator for the facility.

Sources:

  • Northern Natural Gas Company. (2025). Garner Liquefied Natural Gas Plant Semi-Annual Operating Report Period Ending June 30, 2025.
  • Federal Energy Regulatory Commission. (2025). https://elibrary.ferc.gov

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