Mega Data Center Market Size, Share & Forecast to 2035

The Mega Data Center Market covers the capital spent on the facility side of data center campuses planned for 100 MW of IT load or more: powered land and site works, building shell and core, electrical infrastructure, mechanical and cooling systems, and white-space fit-out. DC Market Insights values the global Mega Data Center Market at USD 89.61 billion in 2025 and forecasts USD 309.96 billion by 2035, a CAGR of 13.21%. The 2025 value is built from construction itself: about 7.7 GW of mega-campus capacity in construction-weighted terms (half of the 6.6 GW completed in 2025 plus half of the 8.85 GW due in 2026) at a blended facility cost of about USD 11.60 million per MW. Liquid-cooled campuses are the fastest-growing segment at 22.88% a year because new AI racks exceed what air can remove, and the Middle East and Africa is the fastest-growing region at 18.30% a year as sovereign AI campuses in Saudi Arabia and the United Arab Emirates move from announcement to construction.

Executive Summary

The Global Mega Data Center Market size was valued at USD 21.83 billion in 2020, reached USD 89.61 billion in 2025, and is anticipated to reach USD 309.96 billion by 2035, at a CAGR of 13.21% during the forecast period.

Report attribute	Details
Historical Period	2020-2024
Base Year	2025
Forecast Period	2026-2035
Mega Data Center Market Size 2025	USD 89.61 Billion
Mega Data Center Market, CAGR	13.21%
Mega Data Center Market Size 2035	USD 309.96 Billion

The market grew at 32.64% a year between 2020 and 2025, and 2025 alone added 49.2% over 2024 as cloud providers and AI developers moved to multi-building campuses. DC Market Insights forecasts a further 37.9% rise to USD 123.61 billion in 2026 as guided hyperscale budgets turn into construction. Growth then settles to 13.21% a year through 2035 because annual completions flatten near 27.0 GW worldwide, even as mega campuses rise from 55% of completed capacity in 2025 to 70.5% in 2035.

Market Scope: What Does the Mega Data Center Market Cover?

The Mega Data Center Market covers facility capital expenditure on data center campuses with 100 MW or more of planned IT capacity, valued as spending put in place each year in current US dollars, with 2025 as the base year and forecasts to 2035. DC Market Insights sizes it at USD 89.61 billion in 2025.

Included. Powered land and site works, building shell and core, electrical infrastructure from the on-site substation to the rack (switchgear, transformers, uninterruptible power supply systems, generators and power distribution), mechanical and cooling systems (chillers, air handlers, coolant distribution units and liquid-cooling loops), and white-space fit-out including racks, containment, fire protection, security and data center infrastructure management (DCIM) software.

Excluded. Servers, accelerators, storage and network equipment, utility-owned transmission lines and power plants outside the campus fence, leasing revenue, and operating costs such as electricity and staff.

How the segments fit together. Every segment split re-cuts the same USD 89.61 billion. The splits show what is bought, campus size, who pays, the workload and the cooling design. Leasing income is covered in the Multi-Tenant Data Center Market report. The Data Center Outsourcing Market report sizes third-party hosting, connection and operation of data center capacity at USD 105.92 billion in 2026.

Market Drivers: What Drives the Mega Data Center Market?

Three drivers explain most of the growth in the Mega Data Center Market: gigawatt-scale AI campuses growing at 20.31% a year, hyperscale capital budgets that reached USD 411.43 billion across four companies in their latest fiscal years, and a construction pipeline that held about 23.1 GW worldwide at the end of September 2025.

Gigawatt Campuses Grow at 20.31% a Year and Reach 30.9% of Spend by 2035

Campuses of 1 GW and above accounted for USD 15.10 billion, or 16.9% of the Mega Data Center Market, in 2025, and DC Market Insights forecasts USD 95.90 billion by 2035. The projects behind that forecast are already public. In September 2025, OpenAI announced five new Stargate sites that brought the program to nearly 7 GW of planned capacity and over USD 400 billion of investment over the next three years (Source: OpenAI announcement). Meta has said its Hyperion campus in Louisiana will be able to scale up to 5 GW over several years, and a United States and United Arab Emirates agreement covers a 5 GW AI campus in Abu Dhabi with G42 leading construction.

Four Hyperscalers Spent USD 411.43 Billion on Capital Assets in Their Latest Fiscal Years

Hyperscale cloud self-build is the largest operator segment at USD 52.08 billion (58.1%) in 2025. The budgets behind it are disclosed: Amazon’s purchases of property and equipment were USD 131.82 billion in 2025, Alphabet’s USD 91.45 billion, and Meta’s capital expenditure including finance-lease principal USD 72.22 billion, while Microsoft’s additions to property and equipment reached USD 115.95 billion in the fiscal year to June 2026. For 2026, Alphabet guides USD 175 billion to USD 185 billion (Source: Alphabet filing with the US Securities and Exchange Commission), Amazon about USD 200 billion and Meta USD 115 billion to USD 135 billion. DC Market Insights estimates that mega-campus facility construction absorbs about 12.7% of the four companies’ combined capital spending; servers, accelerators and networks take most of the rest, as tracked in the Hyperscale Computing Market report.

About 23.1 GW Was Under Construction Worldwide at the End of September 2025

The Mega Data Center Market is a construction market first. BloombergNEF counted about 23.1 GW of data center capacity under construction globally at the end of September 2025, split across 831 sites, with 17 GW in the Americas and 15.9 GW in the United States alone. BloombergNEF reported in July 2026 that the announced US pipeline had grown by a further 101 GW since December 2025. DC Market Insights models mega-campus completions rising from 6.6 GW in 2025 to 14.74 GW in 2030 and 19.04 GW in 2035.

Market Trends: How Are Mega Data Centers Changing?

The Mega Data Center Market is shifting toward liquid-cooled halls, on-site power and campuses that are linked into one logical AI cluster, and liquid-cooled capacity grows from 14.8% of spend in 2025 to 33.6% in 2035.

Liquid Cooling Moves from Pilot Halls to Whole Campuses

Liquid-cooled campuses are worth USD 13.29 billion in 2025 and reach USD 104.30 billion by 2035, growing at 22.88% a year, while air-cooled campuses grow at 5.25%. The shift raises mechanical content per MW: Turner & Townsend reported a 7 to 10 percent construction cost premium for AI data centers in the United States.

On-Site Power Becomes Part of the Campus Design

Power is now planned inside the fence. Meta has said its Prometheus campus in Ohio will come online in 2026, and Data Center Dynamics reported that the campus will use gas turbines. In Ireland, the Commission for Regulation of Utilities decided in December 2025 that new data centers must provide new dispatchable onsite or proximate generation and/or storage capacity matching 100% of their maximum import capacity on a de-rated basis.

Multi-Site AI Superfactories Link Campuses Together

Operators now connect mega campuses across states. Microsoft’s Fairwater AI datacenter in Wisconsin covers 315 acres with three buildings and 1.2 million square feet under roof, and in November 2025 Microsoft unveiled its next Fairwater site in Atlanta, Georgia, connected to the Wisconsin site. Linked campuses favor the 300 to 999 MW tier, which grows at 13.38% a year and overtakes the 100 to 299 MW tier in the early 2030s.

Market Challenges: What Holds the Mega Data Center Market Back?

Rising construction costs and grid-connection rules that make large loads pay for and share the burden of capacity are the two constraints DC Market Insights expects to slow the Mega Data Center Market, cutting up to USD 58.89 billion from the 2035 base case in the low scenario.

Construction Costs per MW Rose 21% in the 2026 Cost Guide

Cushman & Wakefield’s 2026 Data Center Development Cost Guide reported that all-in greenfield development costs in the United States and Canada average USD 17.6 million per MW, excluding chips, after a 21% rise in per-MW construction costs. Turner & Townsend ranked Tokyo and Singapore as the two most expensive markets at USD 15.2 and USD 14.5 per watt. DC Market Insights lifts the blended global facility cost from USD 11.60 million per MW in 2025 to USD 12.75 million in 2026 and USD 13.25 million in 2027, then by 2.4% a year.

Grid Operators Make Large Loads Commit and Curtail

Utilities and legislators now treat mega campuses as a separate class of load. The Public Utilities Commission of Ohio approved an AEP Ohio data center tariff in July 2025 that requires loads above 25 MW to pay for at least 85% of their subscribed monthly capacity for up to 12 years. Texas Senate Bill 6, signed on June 20, 2025, sets a default large-load threshold of 75 MW at a single site and enables the curtailment of large loads during firm load-shed events. The International Energy Agency notes that a typical AI-focused data center consumes as much electricity as 100,000 households, and the largest under construction will consume 20 times as much.

Market Opportunities: Where Are the New Revenue Pools?

The two largest new revenue pools in the Mega Data Center Market are AI and GPU cloud builders, growing at 18.79% a year, and sovereign AI programs in the Middle East, India and Southeast Asia.

AI and GPU Cloud Builders Grow Fastest Among Operators at 18.79%

AI and GPU cloud builders, including joint ventures such as Stargate and specialist developers such as Crusoe, spent USD 9.75 billion on mega-campus facilities in 2025, and DC Market Insights expects USD 54.55 billion by 2035. Crusoe topped out the eighth and final building at the Abilene, Texas Stargate campus in November 2025, a campus planned for a total power capacity of 1.2 GW.

Sovereign AI Campuses Lift the Middle East, India and Malaysia

Stargate UAE is planned as a 1 GW cluster in Abu Dhabi with 200 MW expected to go live in 2026, and HUMAIN in Saudi Arabia targets 1.7 GW of data center capacity in 2027 and roughly 3 GW by 2030. Google plans to invest approximately USD 15 billion over 2026 to 2030 in an AI hub in Visakhapatnam, India, capable of gigawatt-scale compute capacity, and AirTrunk plans more than 700 MW of IT load and USD 6.8 billion of investment across its Malaysian portfolio at full build-out.

Pricing: How Much Does a Mega Data Center Cost per MW?

A mega data center campus cost about USD 11.60 million per MW of IT capacity in 2025 on a global blended basis, rising to USD 16.02 million per MW by 2035. These are DC Market Insights estimates covering land, shell, electrical, mechanical and fit-out, excluding IT equipment.

Mega-campus cost and build inputs	2020	2025	2030	2035
Facility cost per MW (USD million)	8.50	11.60	14.23	16.02
Mega-campus completions (GW)	2.38	6.60	14.74	19.04
Mega share of global completions	44.0%	55.0%	67.0%	70.5%

The global blend sits below the USD 17.6 million per MW that Cushman & Wakefield reports for the United States and Canada because it includes lower-cost builds in Asia Pacific, the Middle East and Latin America, and because the 2025 cohort was priced before the 21% rise reported in the 2026 guide. Land is a small share of the bill: Cushman & Wakefield puts powered land in primary US markets at an average of USD 584,000 per MW in 2026 year-to-date.

Standards and Regulation: Which Rules Shape Mega Data Centers?

Four sets of rules shape how a mega campus is designed: Uptime Institute Tier classifications, the ANSI/TIA-942-C standard of the Telecommunications Industry Association (TIA), the ISO/IEC 22237 facility series, and energy and grid rules set by regulators.

Uptime Institute Tier Standard. A Tier III data center is concurrently maintainable with redundant components, and a Tier IV data center has several independent and physically isolated systems acting as redundant capacity components.

ANSI/TIA-942-C (May 2024). The standard covers architecture, telecommunications, power, cooling, fire protection, physical security, safety and monitoring for data centers.

ISO/IEC 22237-1:2021. The international facility standard specifies a classification system based on availability, security and energy efficiency.

ASHRAE thermal guidelines. The recommended dry-bulb envelope for equipment classes A1 to A4 is 18 to 27 degrees Celsius. The Uptime Institute 2025 survey found a weighted average annual power usage effectiveness (PUE) of 1.54.

Energy and grid rules. In September 2026, the European Commission proposed a common sustainability rating scheme covering individual data centers with a capacity above 500 kW, with the first labels expected in 2027 (Source: European Commission news release).

Market Segmentation: Which Segment Leads the Mega Data Center Market?

Electrical infrastructure leads the Mega Data Center Market with 40.5% of 2025 value, hyperscale cloud self-build leads operators with 58.1%, and campuses of 100 to 299 MW lead by size with 46.9%. Across all dimensions, liquid-cooled campuses are the fastest-growing segment at 22.88% a year, ahead of AI inference halls at 21.00% and campuses of 1 GW and above at 20.31%, because DC Market Insights expects most new AI halls to be designed around liquid cooling.

By Component: Electrical Infrastructure Leads with 40.5%

Component	2025 (USD billion)	Share 2025	2035 (USD billion)	CAGR 2025-2035
Electrical Infrastructure	36.26	40.5%	128.02	13.44%
Building Shell and Core	21.87	24.4%	64.54	11.43%
Mechanical and Cooling	19.34	21.6%	79.34	15.16%
Fit-Out, Racks and Security	6.82	7.6%	21.63	12.23%
Powered Land and Site Works	5.32	5.9%	16.43	11.94%

Mechanical and cooling overtakes building shell and core before 2030 as liquid loops, coolant distribution units and heat-rejection plant add value per MW. Vertiv reported a backlog of USD 15.0 billion at the end of 2025, up 109% year on year, and Eaton reported a 16% rise in twelve-month rolling orders in Electrical Americas driven by data center momentum.

By Campus Capacity: Campuses of 100 to 299 MW Lead with 46.9%

Campus capacity	2025 (USD billion)	Share 2025	2035 (USD billion)	CAGR 2025-2035
100 to 299 MW	42.01	46.9%	99.99	9.06%
300 to 999 MW	32.50	36.3%	114.07	13.38%
1 GW and Above	15.10	16.9%	95.90	20.31%

The 100 to 299 MW tier loses 14.6 points of share by 2035 as AI campuses jump straight to the gigawatt class; campuses of 1 GW and above nearly double their share to 30.9%.

By Operator Type: Hyperscale Cloud Self-Build Leads with 58.1%

Operator type	2025 (USD billion)	Share 2025	2035 (USD billion)	CAGR 2025-2035
Hyperscale Cloud Self-Build	52.08	58.1%	161.28	11.97%
Colocation and Wholesale Developers	21.45	23.9%	70.10	12.57%
AI and GPU Cloud Builders	9.75	10.9%	54.55	18.79%
Sovereign, Telecom and Enterprise	6.33	7.1%	24.03	14.27%

Sovereign, telecom and enterprise builders grow at 14.27% a year, led by state-backed programs in the Gulf and Asia.

By Workload: General-Purpose Cloud Leads with 44.7%

General-purpose cloud halls account for USD 40.08 billion (44.7%) of 2025 spend but grow only 7.64% a year to USD 83.71 billion by 2035. AI training campuses are worth USD 30.63 billion (34.2%) and reach USD 99.13 billion. AI inference halls, built closer to users and in larger numbers, grow fastest at 21.00% a year from USD 18.90 billion to USD 127.12 billion and become the largest workload segment at 41.0% of 2035 spend.

By Cooling Architecture: Air-Cooled Campuses Lead with 56.3%

Air-cooled campuses still account for USD 50.48 billion (56.3%) in 2025, reflecting buildings designed before the AI wave. Hybrid air and liquid designs are worth USD 25.84 billion (28.8%) and liquid-cooled campuses USD 13.29 billion (14.8%). By 2035, air cooling falls to 27.2% of spend, hybrid designs lead at 39.2%, and fully liquid-cooled campuses reach 33.6%.

DC Exclusive: The Mega Campus Capex Model and Operator × Campus Size Matrix

At USD 22.13 billion in 2025, hyperscale self-build on campuses of 100 to 299 MW is the single largest cell of the matrix and 24.7% of all mega data center facility spending.

2025, USD billion	100 to 299 MW	300 to 999 MW	1 GW and Above	Total
Hyperscale Cloud Self-Build	22.13	21.05	8.90	52.08
Colocation and Wholesale Developers	14.07	6.08	1.30	21.45
AI and GPU Cloud Builders	1.96	3.38	4.41	9.75
Sovereign, Telecom and Enterprise	3.85	1.99	0.49	6.33
Total	42.01	32.50	15.10	89.61

AI and GPU cloud builders put 45.2% of their facility spend into gigawatt campuses, against 17.1% for hyperscale self-build and 6.1% for colocation developers; a supplier that sells mainly to colocation developers is selling mostly into the 100 to 299 MW tier, where 65.6% of their spend sits. Hyperscalers spread their budgets almost evenly between the two smaller tiers.

The matrix is a DC Market Insights model, not a project count. It is built from 93 inputs: 54 cohort inputs (18 years of global completions, mega-campus share and facility cost per MW, 2019 to 2036), 23 segment shares, 12 country weights and 4 hyperscaler capital-expenditure disclosures used as a cross-check. The model and its assumptions are explained on our research methodology page.

Regional Insights: Which Region Leads the Mega Data Center Market?

North America leads the Mega Data Center Market with 47.6% of 2025 value, and the Middle East and Africa is the fastest-growing region at 18.30% a year, because sovereign AI programs in Saudi Arabia and the United Arab Emirates are adding gigawatt campuses from a small base.

North America Leads with 47.6% Share

North American mega-campus spending was USD 42.68 billion in 2025 and is forecast to reach USD 133.19 billion in 2035, a CAGR of 12.05%. The United States hosted 15.9 GW of the 23.1 GW under construction worldwide in late 2025 by BloombergNEF’s count. North America loses 4.6 points of share by 2035 as other regions grow faster.

Asia Pacific Holds 25.1% Share

Asia Pacific is worth USD 22.46 billion in 2025 and USD 85.99 billion by 2035, a CAGR of 14.37%, and gains 2.6 points of share. India, Malaysia and Australia grow faster than the regional average in the DC Market Insights country allocation.

Europe Holds 14.3% Share

Europe is worth USD 12.80 billion in 2025 and USD 36.16 billion by 2035, a CAGR of 10.94%, the slowest of the five regions. Grid limits in the main hubs push large campuses north: Stargate Norway in Narvik is planned to deliver 230 MW, with ambitions to expand by an additional 290 MW.

Middle East and Africa Holds 7.9% Share and Grows Fastest

The Middle East and Africa is worth USD 7.04 billion in 2025 and USD 37.80 billion by 2035, growing at 18.30% a year. Abu Dhabi’s 5 GW AI campus, Stargate UAE and HUMAIN’s buildout in Saudi Arabia drive most of the growth. Investors weighing new markets can read how we assess power, fiber routes and permitting in our data center site selection and feasibility work.

Latin America Holds 5.2% Share

Latin America is worth USD 4.63 billion in 2025 and USD 16.82 billion by 2035, a CAGR of 13.77%, led by Brazil in the DC Market Insights country allocation.

Country Analysis: Which Countries Spend the Most on Mega Data Centers?

The United States is the largest country market for mega data centers at USD 38.11 billion in 2025, 42.5% of global value, followed by China at USD 7.97 billion (8.9%) and Canada at USD 3.46 billion (3.9%). The 12 largest countries account for 80.6% of 2025 spending.

Rank	Country	Region	2025 (USD billion)	Share 2025	2035 (USD billion)	CAGR 2025-2035
1	United States	North America	38.11	42.5%	117.34	11.90%
2	China	Asia Pacific	7.97	8.9%	25.80	12.46%
3	Canada	North America	3.46	3.9%	12.12	13.36%
4	Japan	Asia Pacific	3.37	3.8%	11.52	13.08%
5	India	Asia Pacific	2.87	3.2%	15.31	18.23%
6	United Kingdom	Europe	2.62	2.9%	6.94	10.23%
7	Malaysia	Asia Pacific	2.52	2.8%	10.40	15.23%
8	Saudi Arabia	Middle East and Africa	2.39	2.7%	14.82	20.02%
9	United Arab Emirates	Middle East and Africa	2.32	2.6%	12.02	17.88%
10	Australia	Asia Pacific	2.23	2.5%	8.94	14.90%
11	Germany	Europe	2.20	2.5%	5.89	10.35%
12	Brazil	Latin America	2.18	2.4%	7.65	13.38%

Saudi Arabia is the fastest-growing large country market at 20.02% a year, ahead of India at 18.23% and the United Arab Emirates at 17.88%, as state-backed AI programs and hyperscale investments add gigawatt campuses. India rises from fifth place in 2025 to third place by 2035. The country figures are a DC Market Insights allocation of the regional totals, weighted by each country’s estimated share of mega-campus capacity under construction and announced.

Forecast Scenarios: How Could the 2035 Forecast Change?

The Mega Data Center Market reaches USD 309.96 billion by 2035 in the base case, with a range of USD 251.07 billion to USD 362.65 billion across the low and high scenarios.

Scenario	Assumption from 2026	2035 (USD billion)	CAGR 2025-2035
Low	Slower completions, lower mega share and cost per MW; 19.0% below base in 2035	251.07	10.85%
Base	Completions reach 27.0 GW a year; mega share 70.5%; cost per MW up 2.4% a year	309.96	13.21%
High	Faster completions, higher mega share and cost per MW; 17.0% above base in 2035	362.65	15.00%

The low case assumes a two-year pause in AI capital spending. The high case assumes grid connections, turbines and transformers keep pace with announced campus plans.

Competitive Insights: Who Leads the Mega Data Center Market?

• Amazon Web Services
• Microsoft
• Google
• Meta
• Oracle
• OpenAI (Stargate)
• Crusoe
• xAI
• AirTrunk
• Equinix
• Digital Realty
• G42
• HUMAIN
• Vertiv
• Schneider Electric
• Eaton
• Turner Construction

Amazon Web Services leads the Mega Data Center Market with about 19% of 2025 facility spending, and Amazon, Microsoft and Google together hold about 48% (DC Market Insights estimate: hyperscale self-build spend allocated across the four hyperscalers in proportion to their disclosed capital spending, in which Amazon’s USD 131.82 billion of 2025 purchases of property and equipment is the largest). The AI and GPU cloud builder segment includes OpenAI’s Stargate program and Crusoe, and G42 leads construction of the Abu Dhabi campus. On the supply side, data centers and networks accounted for 30% of Schneider Electric’s end-market exposure measured by 2025 orders, Vertiv reported net sales of USD 10.23 billion in 2025, and Turner Construction reported that data center construction makes up 40 percent of its USD 40.3 billion order backlog.

Recent Developments

• In September 2025, OpenAI announced five new Stargate sites, bringing the program to nearly 7 GW of planned capacity and over USD 400 billion of investment over the next three years (Source: OpenAI announcement).
• In October 2025, Google announced its first AI hub in India, in Visakhapatnam, with approximately USD 15 billion of investment over 2026 to 2030 and gigawatt-scale compute capacity (Source: Google blog post).
• In November 2025, Microsoft unveiled its next Fairwater AI datacenter site in Atlanta, Georgia, connected to its first Fairwater site in Wisconsin (Source: Microsoft blog post).
• In April 2026, AirTrunk announced its JHB3 and JHB4 campuses in Johor, Malaysia, with more than 280 MW of IT capacity, taking its Malaysian portfolio to more than 700 MW and USD 6.8 billion at full build-out (Source: Data Center Dynamics news report).
• In September 2026, Cushman & Wakefield’s 2026 Data Center Development Cost Guide put all-in greenfield development costs in the United States and Canada at an average of USD 17.6 million per MW (Source: Cushman & Wakefield press release).
• In October 2026, HUMAIN was reported to be targeting 1.7 GW of data center capacity in 2027, with its first 250 MW still due online by the end of 2026 (Source: Enterprise news report).

We follow these campus announcements, cost updates and grid decisions as they happen in our data center industry updates.

Methodology: How We Built the Mega Data Center Market Model

DC Market Insights built this market bottom-up from 18 annual completion cohorts (2019 to 2036). Each cohort combines global data center completions (12.0 GW in 2025, rising to 27.0 GW in 2035), the share delivered on campuses of 100 MW or more (55% in 2025, 70.5% in 2035) and a blended facility cost per MW (USD 11.60 million in 2025). Spending in each year is half the cost of the capacity completed that year plus half the cost of the capacity completed the next year, because construction spending leads handover. The total was split by 5 components, 3 campus-size classes, 4 operator types, 3 workloads, 3 cooling architectures and 5 regions, and every split sums to the market total. The result was checked against three bounds: the disclosed capital spending of four hyperscalers (USD 411.43 billion in their latest fiscal years, of which the hyperscale self-build segment is 12.7%), the US Census Bureau construction-spending series for data centers (USD 50.7 billion in April 2026, against a modeled US mega-campus value of USD 38.11 billion in 2025 that also includes land and owner-furnished equipment), and published per-MW costs from Cushman & Wakefield and Turner & Townsend. The analyst named on this page built the model, and the reviewer checked the arithmetic, the sources and the dates before publication.