Great River Energy, Reliability Upgrade, HVDC System
Crews locate cabling during May 2018 converter station outage to prepare for the upgrade.

Reliability Upgrade for an HVDC System

Great River Energy will soon complete one of the most significant transmission projects in its history.

Since 2011, electric generation and transmission cooperative Great River Energy has been preparing for a major upgrade to its high-voltage direct-current transmission system. Such systems are unique, and Great River Energy’s is one of a few of its kind in the world. It is also one of the utility’s most valuable assets because it delivers nearly all the power from Coal Creek Station, the co-op’s largest power plant, in Underwood, North Dakota, U.S., to Minnesota, U.S., where

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