Comments of Debra Ann Ostroski providing documented correspondence with American Transmission Company re the alternative transmission evaluation for the Large Load Show Cause Proceeding

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RE: Public Comment in Docket No. EL26-70-000 (MISO Large Load Show Cause Proceeding) 
To the Commission: 
In light of the Commission's June 18, 2026 orders directing RTOs to evaluate alternative 
transmission technologies and upgrades to accommodate large loads, I am submitting the 
attached correspondence with American  
Transmission Company (ATC) for the official record. 
As a local concerned citizen regarding the Viridon WISE project in Wisconsin, I formally asked 
ATC to evaluate upgrading their existing infrastructure (such as reconductoring) as a cheaper, 
ratepayer-protective alternative to Viridon's $350 million greenfield transmission line. 
As the attached emails demonstrate, the incumbent utility refused to provide an answer and 
deflected the inquiry to the greenfield developer. This correspondence serves as documented 
evidence that incumbent utilities and developers in the MISO footprint are actively avoiding the 
evaluation of cost-effective Grid-Enhancing Technologies and existing line upgrades in favor of 
more expensive new-build projects. 
Please add this correspondence to the record. 
Sincerely, 
Debra Ann Ostroski