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MidAmerican completes 'multivalue' transmission line in Iowa

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MidAmerican completes 'multivalue' transmission line in Iowa

MidAmerican Energy Co. completed construction of about 120 miles of 345-kV transmission line across several counties in northwestern Iowa authorized by the Midcontinent Independent System Operator Inc.

The line is one of MISO's "multivalue projects," specifically, MVP 3. It runs east-west between the O'Brien substation near Sanborn, Iowa, and Kossuth substation near Burt, Iowa, and north-south between Kossuth and the Webster substation near Fort Dodge, Iowa, crossing through portions of six counties.

MidAmerican, a Berkshire Hathaway Energy subsidiary, announced the completion of construction on Dec. 14. The project included two new substations and modifications to an existing substation, plus the rebuilding of an existing 161-kV line along the same route of the larger line. It was authorized by MISO in 2011 as part of a portfolio of 17 projects to both improve regional reliability and to provide a route for wind energy resources into the grid.

According to MISO's third-quarter 2016 MVP status report, MVP 3 had an approved cost of $550.4 million and was slightly under budget at $545.7 million. MidAmerican completed work on another multivalue project in November and is participating in two others, both in the southeastern portion of Iowa and in collaboration with other transmission-owning utilities, due to be completed in 2017 and 2018.