Why Are So Many Data Centers Being Built? The Drivers, With Sources

1. Artificial intelligence

AI is the single biggest reason. LBNL reports that in 2017 GPU-accelerated servers for AI became a large enough share of the server stock that total U.S. data center electricity use began rising again[4], and that this growth caused data center energy demand to more than double between 2017 and 2023[4]. The IEA calls AI the most important driver of data center electricity growth through 2030[2].

CRS notes that multiple industry reports say AI and related computing services have spurred new construction, and cites one estimate that capacity under construction in North America reached a record 6,350 megawatts at the end of 2024[1].

2. Massive spending by the largest tech companies

The companies building AI laid out their 2026 spending plans in their own earnings statements:

Alphabet raised its 2026 capital expenditure guidance to $195–205 billion, its CFO said on July 22, 2026[5]; about 60% of its second-quarter spending went to servers and 40% to data centers and networking equipment[5].
Amazon expects $220 billion in 2026 capital expenditures, CEO Andy Jassy said on July 30, 2026, as reported by Fortune[6].
Microsoft expects calendar-2026 capital expenditures of approximately $175 billion, CFO Amy Hood said in July 2026[8].
Meta expects 2026 capital expenditures of $130–145 billion, according to its July 29, 2026 earnings release[9].

Worldwide, the IEA says data center investment nearly doubled after 2022 to half a trillion dollars in 2024[2].

3. Electricity demand forecasts that keep rising

The Energy Information Administration now describes data center load as emerging as the dominant driver of long-term U.S. electricity growth[10]. DOE said in December 2024 that data center load growth had tripled over the past decade and was projected to double or triple by 2028[11]. Grid operators have followed: PJM projects a summer peak of about 222,000 MW in 2036, a 10-year rise of nearly 66,000 MW[12].

4. Tax incentives

Good Jobs First, a subsidy-watchdog group, reported in November 2025 that at least 36 states exempt data center equipment purchases from sales and use taxes[3]. In Virginia, the largest market, JLARC found the exemption saved data centers $928 million in fiscal 2023 and that companies call it an important location factor[13]. See our tax breaks tracker for project-level deals.

5. Federal policy

Executive Order 14318, signed July 23, 2025, made it an administration priority to speed the buildout of AI data centers by easing federal regulatory burdens and using federal land[7]. It defines a covered project as one needing more than 100 MW of new load for AI, among other criteria[14]. The Department of Energy identified 16 potential federal sites in April 2025[15] and selected four in July 2025 to invite private AI data center and energy projects[16].

Why here? How sites are chosen

Power comes first: CRS says developers typically locate where existing utility electricity supply is more readily available[17]. JLARC lists fiber, reliable and inexpensive energy, land, nearby customers and tax incentives as the reasons Northern Virginia became the world's largest market[13]. The IEA says nearly half of U.S. data center capacity sits in five regional clusters[2].

What the Census record shows

Of the 129 projects in the Census, 128 have a dated development in 2025 or 2026, and 35 are under construction. See the latest changes.

Common questions

Why are so many data centers being built right now?

Mainly because of artificial intelligence. Growth in AI servers pushed U.S. data center electricity use up again from 2017 and more than doubled it by 2023, according to Lawrence Berkeley National Laboratory. Record tech spending, state tax incentives and federal policy have added to the boom.

How much are tech companies spending on data centers?

In 2026 guidance, Amazon said about $220 billion, Alphabet $195–205 billion, Microsoft about $175 billion for calendar 2026 and Meta $130–145 billion in capital expenditures, much of it for AI infrastructure.

Do states give data centers tax breaks?

Yes. Good Jobs First reported in November 2025 that at least 36 states exempt data center equipment from sales and use taxes.

Sources

Data Centers and Their Energy Consumption: Frequently Asked Questions (CRS R48646)
Congressional Research Service (text via EveryCRSReport.com) · 2026-05-12
Source excerpt
“Multiple industry reports indicate that data processing demands of AI and related remote computing services have spurred new construction and upgrades of data centers. ... One report estimated that the computing capacity (measured by the amount of electrical power consumed by IT equipment) of data centers under construction in North America at the end of 2024 reached a record-high 6,350 MW.”
Energy and AI: Executive summary
International Energy Agency · 2025-04-10
3 source excerpts
“Global investment in data centres has nearly doubled since 2022 and amounted to half a trillion dollars in 2024.”
“Data centre electricity consumption is set to more than double to around 945 TWh by 2030. ... AI is the most important driver of this growth, alongside growing demand for other digital services. ... In the United States, data centres account for nearly half of electricity demand growth between now and 2030.”
“AI-focused data centres can draw as much electricity as power-intensive factories such as aluminium smelters, but they are much more geographically concentrated. Nearly half of data centre capacity in the United States is in five regional clusters.”
Cloudy Data, Costly Deals: How Poorly States Disclose Data Center Subsidies
Good Jobs First · 2025-11
Source excerpt
“In at least 36 states, those purchases are exempt from sales and use taxes under incentive laws specifically crafted for the industry.”
2024 United States Data Center Energy Usage Report
Lawrence Berkeley National Laboratory · 2024-12-19
2 source excerpts
“In 2017, the overall server installed base started growing and Graphic Processing Unit (GPU)-accelerated servers for artificial intelligence (AI) became a significant enough portion of the data center server stock that total data center electricity use began to increase again”
“Most notably, the rapid growth in accelerated servers has caused current total data center energy demand to more than double between 2017 and 2023, and continued growth in the use of accelerated servers for AI services could cause further substantial increases by the end of this decade.”
Earnings call transcript: Alphabet beats Q2 2026 estimates, shares fall on capex surge
Investing.com · 2026-07-22
2 source excerpts
“We are updating our full-year 2026 CapEx guidance range to $195 billion-$205 billion, up from our previous estimate of $180 billion-$190 billion.”
“CapEx was $44.9 billion in the second quarter, with the vast majority of this spent in technical infrastructure to support our investments in AI. Approximately 60% of our investment in technical infrastructure this quarter was in servers, and 40% was in data centers and networking equipment.”
Andy Jassy said Amazon will spend $220 billion this year—and still won't have enough capacity to meet demand
Fortune · 2026-07-30
Source excerpt
“During the call, Jassy told investors that Amazon now expects to devote $220 billion to capital expenditures in 2026, up from its prior estimate of $200 billion, owing to higher memory costs.”
Accelerating Federal Permitting of Data Center Infrastructure (Executive Order 14318)
Federal Register / Executive Office of the President · 2025-07-23
Source excerpt
“These plans include artificial intelligence (AI) data centers and infrastructure that powers them, including high-voltage transmission lines and other equipment. It will be a priority of my Administration to facilitate the rapid and efficient buildout of this infrastructure by easing Federal regulatory burdens.”
Microsoft Fiscal Year 2026 Fourth Quarter Earnings Conference Call
Microsoft Corporation (Investor Relations) · 2026-07-29
Source excerpt
“Capital expenditures were $41 billion including the impact from higher component pricing as noted in our guide. ... Outside of this useful life impact, our calendar year 2026 CapEx investment expectations remain unchanged. However, the shift from finance to operating leases adjusts our expectation to approximately $175 billion.”
Meta Reports Second Quarter 2026 Results (Exhibit 99.1)
Meta Platforms, Inc. (SEC filing) · 2026-07-29
Source excerpt
“We anticipate 2026 capital expenditures, including principal payments on finance leases, to be in the range of $130-145 billion, narrowed from our prior outlook of $125-145 billion.”
EIA releases the Annual Energy Outlook 2026 (press release)
U.S. Energy Information Administration · 2026-04-08
Source excerpt
“Data center load is emerging as the dominant driver of long-term U.S. electricity growth. After a decade-plus plateau, national electricity demand has risen 2.1% annually over the past five years and is projected to grow at an average annual rate of 0.9%–1.6% per year through 2050 across our cases.”
DOE Releases New Report Evaluating Increase in Electricity Demand from Data Centers
U.S. Department of Energy · 2024-12-20
Source excerpt
“The report estimates that data center load growth has tripled over the past decade and is projected to double or triple by 2028. U.S. electricity demand is projected to account for data center expansion and the rise of artificial intelligence (AI) applications, domestic manufacturing growth, and electrification of different industries.”
PJM's Updated 20-Year Forecast Continues To See Significant Long-Term Load Growth
PJM Interconnection · 2026-01-14
Source excerpt
“The summer peak is forecasted to be approximately 222,000 MW in 2036, a 10-year increase of nearly 66,000 MW ... For perspective on how data centers have impacted the long-term outlook, the 10-year average annual growth rate estimated in the 2021 Long-Term Load Forecast was 0.3% per year”
Data Centers in Virginia (Report 598, Summary)
Joint Legislative Audit and Review Commission, Commonwealth of Virginia · 2024
3 source excerpts
“Because data centers are capital intensive, the exemption is valuable to the industry (providing $928 million in tax savings in FY23), and about 90 percent of the industry uses the exemption. ... most of the other states that Virginia competes with for new data center developments have similar exemptions.”
“Multiple factors have contributed to Northern Virginia's market prominence, including a strong fiber network, supply of reliable cheap energy, available land, proximity to major national customers, and the creation of a state data center tax incentive.”
“Northern Virginia is the largest data center market in the world, constituting 13 percent of all reported data center operational capacity globally and 25 percent of capacity in the Americas.”
Accelerating Federal Permitting of Data Center Infrastructure
The White House · 2025-07-23
Source excerpt
“a facility that requires greater than 100 megawatts (MW) of new load dedicated to AI inference, training, simulation, or synthetic data generation. ... a Data Center Project or Covered Component Project for which the Project Sponsor has committed at least $500 million in capital expenditures as determined by the Secretary of Commerce”
DOE Identifies 16 Federal Sites Across the Country for Data Center and AI Infrastructure Development
U.S. Department of Energy · 2025-04-03
Source excerpt
“DOE has identified 16 potential sites uniquely positioned for rapid data center construction, including in-place energy infrastructure with the ability to fast-track permitting for new energy generation such as nuclear.”
DOE Announces Site Selection for AI Data Center and Energy Infrastructure Development on Federal Lands
U.S. Department of Energy · 2025-07-24
Source excerpt
“DOE has selected four sites—Idaho National Laboratory, Oak Ridge Reservation, Paducah Gaseous Diffusion Plant and Savannah River Site—to move forward with plans to invite private sector partners to develop cutting edge AI data center and energy generation projects.”
Data Centers and the Electricity Grid: Frequently Asked Questions (CRS R49326)
Congressional Research Service (text via EveryCRSReport.com) · 2026-09-01
Source excerpt
“Buying electricity from the local utility is the preferred option for most data center developers and is expected to remain so for the foreseeable future. Data center owners who prefer this option typically choose to locate their facilities in areas with more readily available existing utility electricity supply.”

Each source was opened and checked against the excerpt shown. Company statements are identified as such. Figures are as published; where sources differ, each is shown.