Data Centre Construction Costs Rise to $11.3M per MW in 2026

JLL's forecast that global data centre construction costs will average $11.3 million per MW in 2026 represents a 6% increase from the previous year and a 47% increase from the $7.7 million per MW level recorded in 2020. The compound annual growth rate of 7% masks significant variation by market: premium markets like Silicon Valley and Tokyo can exceed $15 million per MW, while emerging markets in India and Southeast Asia remain below $8 million per MW. For developers planning multi-hundred-megawatt campuses, the cost trajectory has fundamental implications for project feasibility and return calculations.

The sheer scale of construction activity dwarfs any previous infrastructure cycle. Monthly data centre starts spending averaged $10.1 billion through March 2026, representing a 600% increase over just two years. If this pace holds, full-year spending for 2026 would reach $121 billion - exceeding the GDP of over 100 countries and rivaling the annual construction spending of entire national infrastructure programmes. By comparison, the US Interstate Highway System was built over 35 years for approximately $530 billion in inflation-adjusted dollars.

Several factors are driving cost escalation simultaneously. High-voltage transformers, which are essential for connecting data centres to the power grid, now have lead times of 36 months and individual costs of $5-10 million per unit. A single large data centre campus may require dozens of transformers. Skilled construction labour - electricians, ironworkers, pipe fitters, and specialised trades - is in severe shortage across major data centre markets, with wage rates increasing 15-25% year-over-year in Northern Virginia, Dallas, and Phoenix. Materials costs for steel, concrete, and copper have risen 10-20% since 2023, driven by demand competition from other construction sectors.

The complexity of modern facilities is another cost driver. AI-ready data centres require liquid cooling infrastructure (adding $1-2 million per MW over air-cooled designs), high-density electrical distribution (bus bar systems rated for 50-100 kW per rack), reinforced floor structures (to support the weight of liquid-cooled equipment), and advanced fire suppression systems compatible with coolant-filled environments. These requirements add 15-25% to the shell-and-core construction cost compared to a traditional air-cooled facility.

Modular and prefabricated construction is emerging as the industry's primary response to both cost and timeline pressures. Prefabricated power blocks, containerised white spaces, and factory-built cooling modules can be manufactured in controlled environments and shipped to site for rapid assembly. Companies like Schneider Electric, Vertiv, and Compass Datacenters (with its proprietary prefab design) report that modular approaches can reduce construction timelines by 30-40% and costs by 10-15% compared to traditional stick-built methods. The trade-off is design flexibility - modular facilities must conform to standardised configurations.

For the industry, the construction cost trend raises strategic questions. At $11.3 million per MW, a 100 MW campus costs over $1 billion before any revenue is generated. The economics work at current lease rates in premium markets ($140-160 per kW per month) but become challenging in markets where pricing has not kept pace with construction inflation. Developers are increasingly focused on speed-to-revenue rather than cost-per-MW, willing to pay premium construction costs if it means delivering capacity 6-12 months faster and capturing lease revenue in a supply-constrained market.