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Committee hears how MISO and regional planning shape data‑center connections and cost allocation

Dane County - Advisory Energy/Infrastructure Committee · August 4, 2026
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Summary

Presenters explained the MISO MTEP process and its role in identifying needed transmission upgrades for data centers, and noted pending FERC scrutiny of large‑load cost allocation methodologies.

Committee members asked about the role of the Midcontinent Independent System Operator (MISO) in transmission planning for large data‑center connections. Corey Singletary said transmission upgrades typically go through the MISO transmission expansion process (MTEP) and that once ATC or another transmission owner identifies a need, the cost may be pooled and spread across utilities or regions depending on allocation rules.

Singletary noted FERC has issued a show‑cause order to some regional operators and that MISO has a large‑load working group exploring cost allocation reforms; he said those regional changes could alter how transmission costs for data centers are recovered. The presenters recommended stakeholders monitor MISO filings and participate through stakeholder sectors when possible.