East River Electric 2020 Annual Report
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complete,” said Hoffman. “Thanks to the hard work of
our crews and the collaboration between the co-ops,
East River now has a 115 kV system around Sioux Falls
that is set up to serve future load growth.”
Wall Lake Substation
Construction on a new Wall Lake substation began in
the summer of 2020 and is projected to be completed
by the end of the year. Property for the substation
was purchased and grading was completed in 2011
as part of a series of land purchases preparing for
future Sioux Falls area growth. This substation is now
needed by Sioux Valley Energy and Southeastern
Electric to serve expanding loads around Sioux Falls
and Hartford and will also improve the reliability of
East River’s transmission system. This project is also
an important step to bring additional facilities into
SPP.
substation. This tie line is currently under construction
and will provide a secondary feed eliminating a 30-
mile radial line serving two East River substations.
When the tie line is complete, East River plans to
disconnect its Veblen and Hillhead substations from
Otter Tail Power’s transmission system and connect
Roberts County Area
In December 2019, WAPA finished construction on a
new 115/69 kV delivery point substation in Roberts
County. This new Roberts County substation provides
a new delivery source for Lake Region Electric,
Traverse Electric and Whetstone Valley Electric.
Along with this project, East River is constructing two
new tie lines that will connect the Roberts County
substation to East River’s transmission system. The
2-mile Roberts County to Sisseton line connects to the
East River system at the Sisseton substation and was
energized in December 2019. The construction of this
project was directed by SPP through a Notification to
Construct and provides a secondary delivery point to
our system in that area, eliminating a 40-mile radial
line serving five East River substations.
The second new tie line will be a 45-mile line stretching
from the Roberts County substation to our Britton
Apprentice Lineman James Wold joined other East River
crews to work on a stretch of transmission line between
Pukwana and Plankinton. The project is part of a series to
rebuild one of East River’s backbone transmission lines.
those substations to East River’s transmission system,
a move that will bring greater control of the level of
service. As part of the project, East River upgraded
the Veblen substation for the voltage change and
rebuilt the 1969 vintage Hillhead substation.
Yankton Area Improvements
Several projects are planned in the Yankton area to
improve service for Bon Homme Yankton Electric.
The new 115/69 kV Lancer substation is planned for
completion in the summer of 2020 and is needed
to address load growth and reliability needs in the
Yankton area. In 2021, East River is also planning a new
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