A sitting state commissioner and two former regulators have asked MISO to publicly share any information it might gather on its Independent Market Monitor’s possible involvement in a five-state complaint against the RTO’s long-range transmission planning.

The Electricity Transmission Competition Coalition and the Industrial Energy Consumers of America have mounted a challenge to MISO’s proposed method for building portions of long-range transmission projects that cross into PJM.

A new group formed to represent electric ratepayer interests has raised questions about interactions between MISO’s Independent Market Monitor and the state regulatory agencies seeking to overturn the RTO’s $22 billion long-range transmission portfolio through a FERC complaint.

MISO announced it will reassign multimillion-dollar substation work in Wisconsin to American Transmission Co. in order to meet a sped-up construction timeline for data center load.

MISO opened a third review of a long-range transmission project, this time because three substations are needed more than five years ahead of schedule to accommodate new data center load.

Stakeholders told MISO it might have anticipated an impending cost increase for a long-range transmission project in the works in Minnesota that jumped about 43% in price to nearly $1.4 billion.

MISO selected a 50/50 joint venture between Transource and Berkshire Hathaway Energy Transmission to build a $1.2 billion, 765-kV project from the RTO’s second long-range transmission portfolio.

MISO has indicated that new generation to serve data centers and other large loads will be mission critical over 2026 and said it will take pains to interconnect units.

MISO opened another review of a second project from its first long-range transmission plan portfolio, prompted again by construction cost overruns.

FERC dismissed Ameren’s bid to gain exclusive rights to build nearly $2 billion of MISO regional transmission projects in the state free of competitors.