Competition intensifies over who builds Wisconsin’s grid as data centers drive power demand

The Midwest’s data center boom requires a vast electrical transmission buildout to keep servers online, and transmission developers are clamoring for a share of the action.

An example of that tug-of-war played out last week, when the regional grid operator for much of the Upper Midwest reversed its earlier decision to allow a developer backed by the investment firm Blackstone to build a series of substations in eastern Wisconsin.

Instead, the operator handed the substations to the American Transmission Company (ATC), which owns and operates most transmission lines in eastern and central Wisconsin. The company argues it’s better-positioned to complete the project before a new Port Washington data center comes online by early 2028, five years ahead of the transmission project’s original deadline.

The about-face is a win for Wisconsin’s largest transmission developer after a series  of losses in Wisconsin’s Assembly, where lawmakers have repeatedly rejected a proposal to give regionally established developers like ATC a monopoly over portions of multistate transmission projects within Wisconsin, leaving the door open for competition.

The new arrangement itself likely won’t drive up costs for Wisconsin ratepayers. But ATC will now fold the substations into a larger $1.3 billion buildout to serve the Port Washington campus — another phase in the ongoing fight over who will pay to supply power for new data centers...   ...more

RSK: This is about who will power up the data centers in Wisconsin and who will pay for it. A complicated issue on the surface and yes, politics are involved.