The Public Service Commission of Wisconsin has approved a power-supply arrangement between Alliant Energy and Meta to serve a planned data center in the utility’s Wisconsin territory, according to Wisconsin Watch reporting published May 6, 2026. Commissioners signed off on the deal but publicly criticized its ‘black box’ approach — a reference to confidential contract terms that keep key details, including those bearing on ordinary ratepayers, out of public view.

Executive Summary

State approval of a utility-hyperscaler power contract is normally a routine milestone. What makes this one notable is the regulators’ own commentary: the commission approved the Alliant-Meta arrangement while simultaneously faulting how much of it is shielded from public scrutiny. That dual message — yes to the deal, no to the process — captures the bind facing utility commissions across the country as AI data centers arrive with unprecedented power demands and equally unprecedented confidentiality requirements.

For the data center industry, the approval clears a regulatory hurdle for one of Wisconsin’s marquee technology projects. For utilities and their customers, the ‘black box’ criticism is the more consequential signal: commissioners are telegraphing that future large-load contracts may face demands for greater transparency, standardized tariff structures, or explicit ratepayer-protection findings before they get a vote.

Approve Now, Object Later: What a Split Verdict Signals

Regulators rarely attach public criticism to a deal they are approving. When they do, it usually means they concluded the underlying project serves the state’s interest — jobs, tax base, grid investment — but want to put the utility and its counterparties on notice for the next filing. The ‘black box’ language, as reported by Wisconsin Watch, suggests commissioners felt they were asked to vote on an arrangement whose economics they could describe to the public only in outline. That is an uncomfortable position for a body whose core mandate is protecting captive ratepayers, the households and small businesses who cannot shop for another electric utility.

The practical takeaway for developers and utilities is that approval-with-a-rebuke is a warning shot, not a victory lap. Commissions in several states have begun moving from one-off confidential contracts toward published large-load tariffs — standardized rate schedules for very big customers — precisely because case-by-case secrecy erodes public confidence. Wisconsin’s commissioners appear to be signaling sympathy with that direction, even as they let this deal proceed.

Who Pays for the Grid AI Needs?

The central economic question in any hyperscale power deal is cost allocation: does the data center pay the full cost of the generation, transmission, and distribution built to serve it, or do some costs land in the general rate base that all customers fund? Special contracts typically include minimum-take commitments, exit fees, and contributions toward infrastructure, but when those terms are confidential, outside parties cannot verify that the protections are adequate. That verification gap — not any specific allegation of subsidy — is what a ‘black box’ complaint is really about.

The stakes are larger than one contract. A single hyperscale campus can draw hundreds of megawatts, comparable to a small city, and utilities nationwide are proposing major generation and grid buildouts on the strength of data center demand forecasts. If a big customer later scales back, cancels, or negotiates better terms, stranded costs can migrate to everyone else’s bills. Transparent, verifiable contract structures are the primary tool regulators have to prevent that outcome — which is why their absence draws pointed language even from commissioners voting yes.

Wisconsin’s Bid for the AI Buildout

Wisconsin has emerged as a genuine contender in the Midwest data center race. Microsoft is developing a major campus in Mount Pleasant in We Energies territory, and Meta has publicly committed to a large data center project in Alliant Energy’s service area, announced in late 2025. Competitive electricity, available land, water, fiber routes, and an aggressive economic-development posture have put the state on hyperscaler shortlists that once defaulted to Virginia, Ohio, or Iowa.

That competitive dynamic cuts both ways in regulatory proceedings. States courting these projects have an incentive to accommodate confidentiality, since hyperscalers guard site economics closely and can take their capital elsewhere. But the same growth concentrates demand risk on local utilities and their customers. The commission’s approach here — approve the project, criticize the opacity — is an attempt to hold both goals at once, and other state commissions facing similar filings will likely study how Wisconsin manages that balance.

Background

The approval lands amid a national surge in data center electricity demand driven by AI computing, which has made utility commissions unlikely gatekeepers of the technology buildout. Wisconsin’s share of that surge includes Microsoft’s multi-billion-dollar campus in Mount Pleasant and Meta’s late-2025 announcement of a major data center in Alliant Energy’s service territory — the project behind this power deal. Meta, the parent of Facebook and Instagram, operates one of the world’s largest data center fleets and typically negotiates dedicated energy arrangements, often paired with renewable-power procurement, for each new campus.

Special contracts between utilities and very large customers have existed for decades, but the scale of AI-era loads has intensified scrutiny of them. Regulators in several states have questioned whether confidential, negotiated deals adequately insulate ordinary customers from the cost of new generation and grid capacity built for a single tenant — the same tension the Wisconsin commission voiced in this decision.

Source: PSC approves Alliant-Meta data center power deal while criticizing ‘black box’ approach — Wisconsin Watch report on the Public Service Commission of Wisconsin’s approval of the Alliant Energy-Meta power arrangement, published May 6, 2026.