At least 12 data centers have been proposed in Alliant Energy’s service area according to documents shared with state regulators, though the lack of details follows a pattern of transparency issues with these high-tech developments.
Data centers have become a lightning rod issue in Wisconsin as tech companies eye developing them across the state. The large-scale facilities, which help power computer systems and artificial intelligence technology, have received pushback because of environmental and economic concerns, but also because proposed projects have emerged in secret, protected by nondisclosure agreements and redacted documents.
Last week, the Wisconsin Public Service Commission, which is the state’s utility regulating body, ruled in a case brought by Alliant to set the electric rates for a Meta data center in Beaver Dam. In the paperwork Alliant submitted in the case, the company was asked to list all requests it has received in 2025 to serve new data centers, including details about the potential development locations and costs.
Alliant objected to the request, saying it was “compound, vague, overbroad, unduly burdensome, and disproportionate” to the case at hand, but ultimately provided a brief list of 12 proposals it had received. But a black rectangle is placed over the last two columns, redacting which cities the data centers could be in, and how many megawatts the facilities would require.
The requests from data center customers are “in various stages of vetting and study,” Alliant wrote in the document, and argued that discussions between the company and potential data center customers weren’t relevant to the Beaver Dam rate case.
Abby Novinska-Lois, executive director of Healthy Climate Wisconsin, a coalition of healthcare workers advocating for climate action, said the group closely follows data center developments in the state but did not have 12 proposals on its radar.
“This is a great example of how many issues we have in transparency as it comes to data centers in Wisconsin, and why we need strong transparency policy and better guardrails to protect Wisconsinites,” Novinska-Lois said.
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@oherken at captimes.com.