A 27-page report released Oct. 9 by the offices of Sens. Elizabeth Warren, Chris Van Hollen and Richard Blumenthal lands on a specific, checkable claim: seven of the country's largest AI data-center developers -- Amazon, Google, Meta, Microsoft, CoreWeave, Digital Realty and Equinix -- told Senate investigators things that, read together, don't support the public case most of them have made for why their data centers are good deals for the communities hosting them.
The investigation ran nearly a year, starting with letters sent to all seven companies on Dec. 15, 2025. Investigators requested internal documents and interviewed employees rather than relying on public statements alone. None of the seven companies has disputed a specific factual finding in the report; what's contested is how to characterize what the facts add up to.
"Full cost" turns out to mean something narrower
Every company in the report says, in some form, that it pays the full cost of serving its own data center. The dispute is over what "full cost" is being measured against:
On jobs, the companies gave investigators a number instead of a dodge, and the number is the finding. Several told Senate staff that permanent staffing runs at roughly one worker per megawatt of power demand. Applied to a typical large facility, that ratio means a 100-megawatt data center -- drawing as much electricity as roughly 100,000 homes -- employs around 100 people once construction ends. (Construction jobs are real and often substantial, which is exactly why companies cite them when seeking local tax incentives; the report's point is narrower -- that the permanent, ongoing employment base is far smaller than the construction-phase numbers imply.)
Louisiana offers the clearest live example of what the abstract cost-allocation dispute means in a specific bill. Utility Entergy is seeking to buy a power plant in Richland Parish, a purchase analysts link mainly to Meta's planned $50 billion, 4,500-megawatt data center there -- about four times the peak electricity demand of the entire city of New Orleans. Estimates put the resulting bill increase for the average Entergy customer at $8 to $13 a month. Meta disputes that its project is responsible for the cost increase -- Entergy's own filing is what regulators will actually weigh.
Secrecy and disclosure split along company lines
The report also tracked who uses nondisclosure agreements, and against whom -- and here the four largest companies have started to diverge in response, not just in practice:
How the four largest respondents answered, after the report
| Microsoft | Amazon | Meta | ||
|---|---|---|---|---|
| NDAs with local governments | Will stop | Will stop (similar policy) | Won't commit | Won't commit |
| NDAs with state agencies/utilities | Continues | Not specified | Won't commit | Won't commit |
| Disputes a specific local cost claim | Not disputed | Not disputed | Not disputed | Disputes Louisiana bill-increase link |
| Accepts "but-for" grid-cost standard | No | No | No | No |
Meta's own stated reason for seeking NDAs, quoted directly in the report, is that "maintaining confidentiality during project development increases efficiency and speed" -- an efficiency argument, not a denial that the practice limits what residents can see before a deal is signed. That the two companies with the most AI-industry visibility, Google and Meta, are also the two declining to extend Microsoft and Amazon's new local-government disclosure policy is the specific split this report leaves for the next news cycle to press on.
On tax breaks, the most valuable incentive isn't the headline-grabbing property-tax abatement -- it's sales-tax exemptions on the computer equipment itself, which Tom's Hardware's analysis of the underlying data puts at roughly 39% of total spending on an average 1-gigawatt AI data center. All seven companies told investigators they intend to keep seeking that exemption specifically, even as some roll back other disclosure practices.
Congress must hold Big Tech accountable so these companies pay their fair share.
That's Warren's own framing, and it's worth separating from what the report actually establishes. This is Democratic committee staff work, not a bipartisan finding and not a regulation -- and Congress has already tested the policy fix once this year. The House passed the bipartisan Ratepayer Protection Act, which would have directed states to consider shifting large-load infrastructure costs onto the companies that trigger them, by a lopsided 417-3. The Senate rejected advancing it, 57-43, with Democrats arguing the bill was too weak because it only told states to "consider" cost-shifting rather than requiring it. (Warren has separately called for a national moratorium on new AI data centers until developers agree to cover full costs -- a far more aggressive ask than the bill that just failed, and one with essentially no present path through this Congress.)
That failed vote is also the honest answer to who this report is actually for. It isn't a law, and nothing in it forces a single company to change a single practice. Its leverage is reputational and electoral -- about half of Americans told Economist/YouGov pollsters this year that data-center construction is bad for the country, a number Trump has warned could push the AI buildout overseas if opposition hardens. A report that gives that half of the public a specific number -- one job per megawatt, an $8-to-$13 monthly bill increase in one named county -- is the kind of ammunition a failed Senate vote doesn't provide on its own.
- A Senate probe says 7 AI data-center builders won't disclose permanent job counts.
- Companies pay only costs that solely benefit their own site, not shared grid upgrades.
- A 100-megawatt facility creates roughly 100 permanent jobs, by the companies' own ratio.
- Microsoft and Amazon will stop seeking local-government NDAs; Google and Meta won't commit.
- Caveat: this is a Democratic-staff report, not binding law -- a related bill already failed 57-43.