Great River Energy on Oct. 3 provided an update to the Minnesota Public Utilities Commission on the Straight River Switch to Blueberry Substation Segment as well as on the Blueberry Substation to Red Eye Substation Segment of the Menahga Area 115-kv Project.
As the company noted, the commission in March 2016 issued an order granting Great River Energy and Minnesota Power a route permit for the project.
According to Great River Energy’s website, Great River Energy is building about 22.5 miles of new 115-kV overhead transmission line in southern Hubbard County and northern Wadena County to ensure the reliability of electric service to the members of Todd-Wadena Electric Cooperative. As a component of the project, a new substation in the same area as an existing Menahga substation is being proposed to ensure system reliability.
Minnesota Power on Sept. 30, 2016, told the commission that all construction activities for the company’s portion of the Menahga High Voltage Transmission Line (HVTL) Project are complete. Minnesota Power said that its portion of the project includes a 0.2-mile segment of new 115-kV HVTL and an electrical substation.
Discussing the Straight River Switch to Blueberry Substation Segment in its Oct. 3 status report, Great River Energy said that the Blueberry substation site was graded in October 2016, and the foundation contractor finished as much site work as possible at the end of November 2016.
Work on the substation is nearly complete, Great River Energy said, adding that “the rock has been placed in the substation and wiring of various components is ongoing.”
The transmission line will be cut in to the Blueberry substation this month – scheduled for Oct. 19 – and the temporary line at the substation will then be removed, Great River Energy said.
Restoration work is done on that segment of line, Great River Energy noted.
Of the Blueberry Substation to Red Eye Substation Segment, Great River Energy said that restoration work is done on that segment of line as well.
Great River Energy noted that construction of the Straight River Switch to Blueberry Substation to Red Eye Substation segments of the project was completed in March. Energization of those segments at 115 kV occurred on May 1 with minimal load, and with full load in early June. Great River Energy added that the Red Eye substation is being fed temporarily from the Hubbard substation source until this month, when the Blueberry substation will be completed and the transmission line can be connected as designed and permitted.