Change sought for 624-MW Oakley Generating Station project in California

On May 9 of this year, in its first filing in this docket since 2011, Contra Costa Generating Station LLC asked the California Energy Commission for a small change for its power project.

Said the filing: “On May 18, 2011, the California Energy Commission (CEC) approved and licensed the Oakley Generating Station (OGS), owned by Contra Costa Generating Station LLC (CCGS LLC). The OGS will be a natural gas fired, combined-cycle electrical generating facility rated at a gross nominal generating capacity of 624 megawatts (MW).

“The facility is located at 6000 Bridgehead Road in Oakley, on a 21.95-acre parcel that was formerly part of a larger 210-acre parcel owned by E. I. du Pont de Nemours and Company (DuPont). The project site is located at the western city limits of the City of Oakley, adjacent to the eastern city limits of the City of Antioch in Contra Costa County.

“The facility will tie into the regional electrical grid at Pacific Gas and Electric Company’s (PG&E’s) Contra Costa Substation in Antioch, California. Power will be transmitted to the grid through a 230-kV generation tie-line connecting to the substation, located 2.4 miles to the southwest of the OGS. The project will replace the existing 60-kV line, located within an existing 80-foot-wide PG&E easement, with a 230-kV line. Construction of the project commenced in June of 2011.

“The purpose of this filing is to request the CEC’s approval for a minor modification of the OGS project’s generator tie-line configuration. CCGS LLC is also working with the East Contra Costa County Habitat Conservancy to amend the project description to reflect this change in the agreement for coverage of the OGS under the East Contra Costa County Habitat Conservation Plan/Natural Communities Conservation Plan (HCP/NCCP).

“The requested modification is a minor change in the location of generator tie-line conductor support tower 2/21 and a corresponding minor modification to the generator tie-line alignment between tower 2/21 and tower 2/22. There are corresponding minor changes in the locations and shapes of the pull and work area sites that are located outside of the generator tie-line right-of-way and result in both deletions and additions of work areas. These changes result from minor refinements and additions to the generator tie-line design and construction plan being finalized by PG&E. They are needed because the previously proposed location of the tower is no longer available for use.”

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.