A note on this one: an earlier version of this piece ran in August 2025. The buildout has moved fast enough since that most of the figures needed replacing. This is the 2026 update.
The AI revolution is reshaping the global economy, and at its core lies an unprecedented demand for data centers — the facilities housing the servers, GPUs and power infrastructure needed to train and deploy AI models.
U.S. data center construction starts reached roughly $78 billion in 2025, up about 190% since the launch of ChatGPT in late 2022. Data centers now account for a large and rising share of U.S. non-residential construction spend. The demand curve behind it is steeper still: hyperscalers have committed $300+ billion through 2028.
But this growth isn't uniform. A handful of states are capturing most of it — and the reasons are specific, structural, and worth understanding whether you're siting a facility or buying land near one.
Northern Virginia — "Data Center Alley" — remains the world's largest data center market, with more than 300 facilities and gigawatts more planned. Low energy costs, dense fiber, proximity to federal demand, and long-standing sales tax exemptions on equipment built an advantage that took two decades to accumulate.
The caveat matters as much as the headline: that density is now a constraint. Parts of Northern Virginia and several PJM zones have turned "power available" into a multi-year negotiation. Virginia wins on existing capacity and loses on new greenfield speed — which is why the growth is moving.
Texas is on pace to pass Virginia as the nation's #1 hub, with roughly 140 data centers under construction. ERCOT's scale, gas and renewable surplus, competitive retail options, and the ability to pursue behind-the-meter generation create optionality few other markets match. Dallas, Houston and Austin are the established hubs, but the real expansion is rural West, East and South Texas — cheaper land, less organized opposition, and property tax abatements through state economic development programs.
Phoenix is among the fastest-growing capacity markets in the country, built on abundant solar, a dry climate that favors efficient cooling, low-cost land, and the Qualified Facilities Tax Incentive Program. Its exposure is water — a line item that has moved from footnote to underwriting assumption across the Southwest.
Atlanta's fiber density and low energy costs attract hyperscalers with sales tax exemptions. Tennessee's TVA ecosystem of local power companies offers faster local decision-making than many investor-owned utility rate cases. North Carolina has landed nearly $11 billion in life-sciences manufacturing investment in a single year, and the Carolinas are now pulling movers at a faster rate than Texas or Florida. These states combine competitive pricing with active economic-development machinery and secondary-county opportunities away from saturated metro nodes.
Here is the comparison that puts the buildout in perspective.
In 2025, Amazon, Alphabet, Microsoft and Meta were projected to spend a combined $364 billion in capital expenditure, with well over half of it allocated to AI data centers and computing infrastructure. Set that against national defense budgets:
Four American companies now out-invest the combined defense budgets of Russia, Germany and India. Global military expenditure reached $2.718 trillion in 2024, up 9.4% — and U.S. private-sector AI capital deployment still dwarfs the entire defense outlay of most nations.
That is not a curiosity. It is a statement about where strategic capability is being built, and how fast.
Economically, the buildout is driving well over $1 trillion in investment across a five-year horizon, concentrated in construction, engineering and skilled trades — and the follow-on wave of healthcare, logistics, schools and services that arrives with every permanent job.
Strategically, compute underwrites everything from cyber defense to autonomous systems. Capability built domestically is capability not dependent on a foreign supply chain — a lesson the semiconductor shortage taught at considerable expense.
Technically, leading the buildout means setting the efficiency and sustainability standards rather than inheriting them. Liquid cooling, grid-interactive load management and on-site generation are all being proven out in these facilities right now.
Every state ranking above is a first-pass filter, not an answer. A state average tells you nothing about whether a specific parcel can reach an existing circuit with credible headroom, whether zoning permits the use by right, or whether the fiber on the map is physically diverse. Those are parcel-level questions, and they decide deals.
That gap is what we built REIR to close — owner of record from the county's own roll, zoning district with the code section cited, substation distance and voltage, fiber carriers on route, flood, wetlands and soils, every figure traced to an official source and gaps flagged rather than guessed. Our coverage map is published live, so you can check your own market.
The states are winning. The sites still have to be earned.
Screening land in one of these markets? Check the coverage map or call the ARUON research desk at (833) 545-7058.