Data Center Construction Costs per MW and the Site Factors That Drive Them

Data center costs are quoted per megawatt of capacity, usually critical IT load, because the electrical and mechanical systems that scale with megawatts are most of the budget. The building shell is a smaller share than most people expect.

Cushman & Wakefield’s 2026 Data Center Development Cost Guide, published in September 2026, reported all-in greenfield development costs in the U.S. and Canada averaging about $17.6 million per MW for the most modern facilities, excluding chips and GPUs.¹ Coverage of the guide gave the full range as $8.9 million to $23.3 million per MW.² That was an average increase of 21% per MW since the previous edition in the fourth quarter of 2024.¹

Turner & Townsend’s 2025–2026 index, based on a survey of 250 experts across 52 markets, takes a narrower benchmark: a typical air-cooled, build-to-suit hyperscale facility of 30–50 MW of IT load.⁵ It notes that colocation or enterprise facilities can move its per-watt figure by up to 15%, and that similarly sized liquid-cooled U.S. facilities cost about 7–10% more to build than air-cooled ones.⁵ Its most expensive global markets were Tokyo, Singapore and Zurich at about $15.2, $14.5 and $14.2 per watt.⁵

None of these figures include servers or GPUs, which for AI facilities can exceed the cost of the building. Always ask which scope a quoted number covers: shell only, fully fitted, with or without land, and with or without utility-side work.

Most of a data center budget is electrical and mechanical systems: switchgear, transformers, UPS and batteries, generators, distribution, cooling plant and controls. Power infrastructure was the largest single category in Cushman & Wakefield’s 2026 guide at about 21% of greenfield cost, while site acquisition was about 7%.²

The tier and redundancy level changes how much equipment is installed per megawatt, which is one reason two buildings with the same IT load can differ widely in cost. Higher rack density shifts spending toward liquid cooling and heavier electrical distribution; see high-density GPU racks and site power.

Equipment is where most recent inflation came from. Cushman & Wakefield’s 2026 guide, as reported by CRE Daily, found that switchgear prices climbed about 60% between December 2021 and early 2026, with copper up 46%, generators and motors 33%, cooling equipment 32% and transformers 29%.²

Lead times matter as much as price. The same coverage reported pad-mounted transformer lead times of 68–113 weeks, generators 60–100 weeks and medium-voltage switchgear 38–63 weeks.² For large utility power transformers, Wood Mackenzie projected a 30% supply deficit in 2025,⁶ and trade coverage of its analysis put power transformer unit prices about 77% above 2019 levels.⁷ Long lead items are often ordered before final design, which adds deposits and risk. See transformer and switchgear lead times.

Labor is the other pressure. Associated Builders and Contractors estimated that the construction industry needed to attract about 349,000 net new workers in 2026 and flagged demand for electricians tied to data center construction.⁸ Remote sites may need per diem, travel pay or housing to staff a large job, which belongs in the budget from the start. In Turner & Townsend’s survey, 47% of respondents reported tender price increases of 6–15% over the prior year, and 21% reported increases above 15%.⁵

The cost of bringing power to the property line is where sites differ most, and it is often missing from per-MW benchmarks. It depends on distance to transmission, whether a new substation or switching station is needed, the state of the local grid, and the utility’s rules for who pays.

Public cases show the scale. Dominion filed for new 230 kV lines estimated at $121 million to serve a planned 900 MW data center in Chesterfield County, Virginia.⁴ In Maryland, a switching station and transmission work for a data center campus were estimated at about $33 million ($27.3 million for the switching station and $5.6 million for line work), with the developer contributing about $2.17 million.³ That split drew objections from a commissioner, and the trend is toward assigning more such costs to the customer through contribution in aid of construction and direct assignment.

Contract terms are a cost too. AEP Ohio’s data center tariff, approved in July 2025, requires new customers above 25 MW to pay for at least 85% of contracted demand for up to 12 years, with exit fees.⁹ A site in a territory with terms like these carries a long-term commitment that should be modeled alongside capital costs. See large-load tariffs and electric service agreements and who pays for transmission upgrades.

Site work is a smaller share of the total than electrical systems, but it is the part most directly controlled by the land, and it is the hardest to estimate from a desk. Cushman & Wakefield listed evolving land fundamentals among the drivers of rising development costs in its 2026 guide.¹

• Grading and earthwork: a campus needs large, nearly flat pads. Rolling terrain means cut and fill, retaining walls and longer schedules. See slope, soils and geotechnical review.
• Rock and soils: shallow bedrock means blasting or ripping; soft or expansive soils mean deeper foundations or ground improvement. Only borings settle this.
• Stormwater: large roofs and paved areas need detention and treatment ponds that consume acreage. See stormwater management for data center campuses.
• Access and roads: turn lanes, road upgrades and heavy-haul routes for transformers. See heavy-haul access.
• On-site utilities: water and sewer extensions, fire flow, fiber duct banks and gas laterals for onsite generation.

The site-driven costs are the ones a landowner or early-stage developer can actually influence, because they can be found and quantified before a buyer arrives. A useful early estimate does not need precise numbers. It needs the right list of questions answered.

1. 01Ask the utility what service would require: new substation or tap, line length, upgrade scope, and its rules on cost sharing and collateral.
2. 02Run a topographic review to estimate earthwork. Lidar-based contours are often enough for a first pass.
3. 03Order borings if rock or soft soils are plausible; they are cheap relative to the risk they resolve.
4. 04Map stormwater requirements and the acreage ponds will take.
5. 05Check road access and the heavy-haul route from the nearest rail or highway.
6. 06Carry contingency for equipment escalation and schedule slippage, which analysts expected to affect 30–50% of 2026 projects.¹⁰

These answers feed directly into how developers underwrite a site and into the construction timeline. If you want an outside view of those costs for a specific parcel, you can get a site reviewed.