Transource Missouri files application in Missouri for proposed 345-kV switch station

Persons wishing to intervene in the matter involving a 345-kV interconnection switch station in DeKalb County, Mo., are to file an application to intervene by Aug. 19, the Missouri Public Service Commission (PSC) said in a July 22 order.

As noted in the order, Transource Missouri on July 22 filed an application with the PSC seeking an order declining jurisdiction, or, in the alternative, granting a certificate of convenience and necessity (CCN) that would authorize the company to own, operate and maintain a 345-kV interconnection switch station in DeKalb County, Mo., that would connect the Osborn Wind Energy Center with Transource Missouri’s Sibley–Nebraska City 345-kV electric transmission line project.

PSC staff is to file a recommendation or a status report on Transource Missouri’s application by Aug. 23, the PSC said in its order.

As noted in the application, Transource Missouri is a wholly owned subsidiary of Transource Energy, which has two members including AEP Transmission Holding Company, which owns 86.5% of Transource and is a wholly owned subsidiary of American Electric Power (NYSE:AEP). The other member is GPE Transmission Holding Company, which owns 13.5% of Transource and is a wholly owned subsidiary of Great Plains Energy (GPE), which is the parent corporation of Kansas City Power & Light (KCP&L) and KCP&L Greater Missouri Operations Company (GMO).

Transource Missouri also noted that in 2013, it obtained a line CCN from the PSC to build, finance, own, operate and maintain two Southwest Power Pool (SPP)-approved 345-kV regional electric transmission projects known as the Iatan–Nashua Project and the Sibley–Nebraska City Project.

Transource Missouri’s portion of the Sibley–Nebraska City Project is under construction, has an expected in-service date of Dec. 31, and is located entirely within Missouri. When complete, Transource Missouri’s portion of the new line will connect with and extend from GMO’s Sibley generating station in Jackson County to the new Mullin Creek substation in Nodaway County, and then from the Mullin Creek substation to the Missouri River crossing in Holt County.

The Omaha Public Power District (OPPD) will own and operate the portion of the line that extends from the Missouri River crossing into Nebraska and connects to OPPD’s Nebraska City substation, Transource Missouri added.

The company also noted that it has entered into a generator interconnection agreement (GIA) in relation to an interconnection request for interconnection service for the generating facilities of Osborn Wind Energy LLC, the developer of the Osborn Wind Energy Center. Transource Missouri, as the transmission owner; SPP, as the transmission provider; and Osborn Wind, as the interconnection customer, have entered into the GIA to fulfill Osborn Wind’s request, under SPP’s open access transmission tariff (OATT) requirements.

Osborn Wind’s generation facilities will interconnect to the Transource Missouri line through the new interconnection switch station located in DeKalb County. As the interconnection customer, Osborn Wind would, under the terms of the GIA, build the switch station and certain “transmission owner interconnection facilities,” and be obligated to pay for the switch station and those other facilities, Transource Missouri added.

Once completed, the switch station and the related facilities would be owned, operated and maintained by Transource Missouri.

The estimated cost of the switch station and associated interconnection facilities that will be transferred and contributed to Transource Missouri from Osborn Wind without payment is about $16.8m, Transource Missouri added. The company also said that it will build and own additional network upgrades costing about $2.1m, which will be paid for by Osborn Wind.

The switch station is a necessary component of the electrical facility for the Osborn Wind Energy Center to have interconnection with, and access to, the transmission grid so that it can deliver capacity and energy to its customer, Transource Missouri said. The wind generating facility will have a nameplate capacity of up to 200.1 MW that will produce wind energy to help meet renewable energy public policy goals.

Transource Missouri also said that it requests that the PSC consider whether it is appropriate for it to assert jurisdiction under the specific facts of the case and to find that under long-standing Missouri case law, it need not assert jurisdiction over the switch station project. The facts that may warrant a decision by the PSC to decline jurisdiction include that Transource Missouri will not pay Osborn Wind for the switch station, which the developer will contribute to the applicant, and which will not increase Transource Missouri’s FERC-regulated rate base.

Nevertheless, if the PSC decides to assert jurisdiction, Transource Missouri added that it requests that the PSC grant the CCN as requested, along with certain waivers and expedited treatment.

Among other things, Transource Missouri said that it requests that the PSC grant the application or that it decline jurisdiction as soon as reasonably practical, but in any event no later than 90 days after the filing of the application.

The construction schedule set forth in the GIA calls for the switch station to be energized by Dec. 31, and to begin commercial operations on Feb. 2, 2017. If the switch station is not energized by Dec. 31, it will necessitate an outage of Transource Missouri’s Sibley­­­–Nebraska City transmission line in order to interconnect the switch station, Transource Missouri added, noting that the scheduling of a line outage is subject to SPP approval and may be difficult to schedule during the winter peak season.

About Corina Rivera-Linares 3286 Articles
Corina Rivera-Linares was TransmissionHub’s chief editor until August 2021, as well as part of the team that established TransmissionHub in 2011. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial from 2005 to 2011. She has also covered such topics as health, politics, and education for weekly newspapers and national magazines.