Total Peaking seeks FERC approval to upgrade LNG facility in Connecticut

Total Peaking Services LLC on Sept. 23 applied at the Federal Energy Regulatory Commission for a certificate of public convenience and necessity to upgrade its existing liquefied natural gas (LNG) facility in Milford, Connecticut.

Total Peaking is a direct wholly-owned subsidiary of United Resources Inc. In July 2014, URI, a wholly owned subsidiary of UIL Holdings Corp., closed on an acquisition of Total Peaking from subsidiaries of Iberdrola USA Inc.

Total Peaking received a certificate of public convenience and necessity in 1997 to offer open-access storage service and storage-related service from the Milford Facility. This certificate was amended in 2006 to permit Total Peaking to increase the send out capacity of the Milford Facility from 72 million cubic feet per day (MMcf/d) to 90 MMcf/d. Since 1998, Total Peaking has been authorized to provide these interstate storage services at market-based rates.

Both historically and currently, Total Peaking has had only one customer, CNE Peaking LLC (CNEP), which supplies 100% of the output of the Milford Facility to The Southern Connecticut Gas Co. (SCG). Pursuant to a state-approved Peaking Service Agreement (PSA), SCG has a long-term contractual entitlement to the full operational capacity of the Milford Facility. The ability to avail itself of the full output capacity of the Milford Facility allows SCG to meet its future system needs and projected peak day requirements.

This new project will involve two primary modifications to the Milford Facility.

  • Total Peaking will increase the plant’s vaporization send out capacity from 90 MMcf/d to 105 MMcf/d, and will construct and install an additional boil-off gas (BOG) compressor unit.
  • Total Peaking also intends to perform certain additional electrical upgrades as part of the project.

The project will be constructed within the fence line of the existing approximately 24-acre Milford Plant site in Milford, Connecticut. In addition, no pipeline facilities, offsite staging areas, contractor yards, access roads, temporary work spaces or other offsite construction-related uses are being proposed as part of this application.

Total Peaking proposes to begin construction first on the BOG compressor in July 2016 with an in-service date of September 2016, and to begin construction of the new vaporizer in September 2016 with an in-service date of November 2017. Total Peaking ultimately seeks to have all equipment in place to meet peak gas demand during the 2017-2018 winter heating season.

The Milford Facility currently has three submerged 30 MMcf/d combustion vaporizers. Total Peaking proposes to remove these existing vaporizers along with the existing building in which they are housed, and in their place, install a single, more efficient vaporizer that will operate at 105 MMcf/d.

Total Peaking’s existing compressor system includes two BOG compressors. Total Peaking proposes to modify this system by adding a third compressor unit powered by a TECO Westinghouse 150 horsepower electric motor. The new unit will run alongside the two existing BOG compressors and will utilize the existing foundation.

The electrical infrastructure upgrades include:

  • the installation of three new 400-kW emergency generators to replace the existing transformer and emergency generator;
  • the replacement of the plant’s existing 750 kilovolt-ampere (kVA) dry-type transformer with a 1500 kVA liquid-cooled transformer; and
  • the installation of a new 4,160 volt electric interconnection line to provide the plant with additional electricity to operate the new vaporization equipment.
About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.