MidAmerican Energy on Dec. 14 said that construction is complete on the 345-kV Multi-Value Project (MVP) 3 that spans about 120 miles in northwest Iowa from a location near Sanborn to Burt and then ending near Fort Dodge.
The main reason for the new line – which travels through portions of six northwest Iowa counties: Clay, Humboldt, Kossuth, O’Brien, Palo Alto, and Webster – is to build a smarter and more reliable energy grid, the company said.
In addition to the new line, the company said that it built two new substations, modified an existing substation, and rebuilt existing 161-kV transmission lines along the same route. Construction crews replaced two- and three-pole wood structures with single-pole steel structures, the company said.
While the project is substantially complete, residents in the area will still see crews working to remove materials, clean up and restore land affected by construction, the company said.
MidAmerican Energy said that the Midcontinent ISO (MISO) in 2011 unanimously approved the organization’s Transmission Expansion Plan, which is a comprehensive long-term regional plan for the energy grid that will benefit consumers throughout the Midwest.
MidAmerican Energy also said that it is assisting with the construction of four of the 17 MVPs included in the MISO plan, which along with MVP 3, are:
- MVP 7, a 27-mile line through Appanoose, Davis and Wapello counties in Iowa
- MVP 16, a 33-mile line through Henry, Knox, Mercer and Rock Island counties in Illinois
- MVP 4, a 71-mile line through Black Hawk, Butler and Franklin counties in Iowa, that was completed in October
The company noted that MVP 16 and MVP 7 are scheduled for completion by mid-2017 and mid-2018, respectively.
According to a company brochure about the MVPs, the poles are made of self-weathering steel and do not require painting or periodic maintenance. The height of the single-circuit structures will be about 100 feet to 120 feet, the brochure said, adding that the height of the double-circuit structures will be about 120 feet to 150 feet. The span length will be about 1,000 feet to 1,100 feet, the brochure said, noting that the existing 161-kV line poles are about 660 feet.
The poles will primarily be located along lines of land division, road rights of way (ROWs), and railroads; the poles also may be located along existing transmission line routes, according to the brochure.
The company is requesting a project ROW width of 150 feet. The brochure also stated that the company will pay a predetermined percent of the average land value for permanent easement and a predetermined percent of the average land value for temporary construction work space; an additional payment will be made if a pole is located on a property.
Among other things, the brochure said that the projects are primarily designed to improve system reliability; relieve existing transmission congestion; improve use of existing generation; lower the cost of delivered energy; optimize wind generation placement; and allow for the regional delivery of renewable generation.