By Amanda Durish Cook

MISO opened the floor on Friday to transmission developers’ bids for the congestion-relieving Duff-Rockport-Coleman 345-kV project in Southern Indiana and Kentucky. Developers have until July 6 to submit bids on the four-year construction project, and developer selection is planned to begin thereafter.

The call for proposals marks MISO’s first-ever competitively bid transmission expansion project under FERC Order 1000.

Forty-eight transmission developers are certified to submit bids. Non-qualified developers can submit applications for certification through Feb. 8.

6-Month Review

MISO has allowed for a roughly six-month review of developers’ proposals and plans to announce its choice before Dec. 30. The estimated in-service date is Jan. 1, 2021.

“Through extensive work with stakeholders to develop the competitive transmission process, MISO is ready to engage in a fair process to select a developer for Duff-Coleman,” Priti Patel, regional executive for MISO North, said in a statement. She said the proposals will be judged “in terms of certainty, specificity, risk mitigation and cost.”

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The project has been designated by MISO as a market efficiency project. MISO’s Board of Directors approved it, along with more than 350 other transmission projects, as part of the 2015 Transmission Expansion Plan in December.

“This project completely mitigates the congestion on the MISO system around the Newtonville and Coleman areas and strengthens the 345-kV backbone in the region,” MISO wrote in its MTEP15 report. “In addition, the project fully addresses long-standing reliability issues around PJM’s Rockport station and obviates the need for the Rockport special protect scheme and operation guide that protects the stability of the grid.”