Data center siting strategy is rapidly shifting as grid queues lengthen and power constraints reshape permitting and site-selection criteria.
Power availability has become the primary factor determining where data centers are built and whether announced projects proceed on schedule, pushing more projects beyond established hubs and into secondary markets, according to new research from DCByte.
The global data center index evaluates markets through three lenses: demand (contracted capacity, weighted at 40%), delivery (under-construction and committed capacity, 35%), and depth (operational inventory, 25%). Ashburn, Virginia, led the Americas ranking; Johor, Malaysia, topped Asia-Pacific; and London ranked first in Europe, the Middle East, and Africa.
"Power availability has become the primary factor determining both where data centers are built and whether announced projects proceed on schedule," said Alexandra Desseyn, Americas research manager at DCByte. "In many primary markets, grid-connection timeframes now extend several years, meaning suitable land without a credible route to power has limited development value."
Major data center hubs retain key advantages—connectivity, cloud availability zones, and mature customer ecosystems—but grid queues, land scarcity, and regulatory pressure increasingly hinder the conversion of demand into operational capacity. Ashburn exemplifies this tension, with 5.6 GW of live capacity and another 15 GW in its pipeline as of Q1, yet grid connections requiring five to seven years. Development is now spreading into Prince William, Culpeper, and Spotsylvania counties.
Similar pressures emerge globally. Tokyo faces power connection timelines extending up to a decade, while Dublin and Amsterdam are classified as constrained core markets where demand remains strong but power, regulation, and community resistance limit delivery. According to DCByte's future growth rankings, investment is shifting toward markets with more flexible development conditions: Pittsburgh, Charlotte, and Austin in the Americas; Kuala Lumpur, Bangkok, and Jakarta in APAC; and Zaragoza, Milan, and Berlin in EMEA. Johor exemplifies this shift, growing from less than 10 MW five years ago to approximately 1 GW in four years, transforming from a Singapore spillover into APAC's leading emerging market. Tennessee, West Texas, and locations beyond Northern Virginia's established clusters are attracting greater attention in North America, while Portugal, Spain, and Nordic locations offer opportunities in Europe. Johor, Batam, and secondary Japanese markets are positioned for further growth in APAC.
Developers must look beyond a market's total electricity generation. Transmission capacity, substation availability, interconnection queues, and staged energization determine whether power can reach a site within a commercially viable timeframe. Long lead times for transformers, switchgear, and gas turbines add further delivery risks. Operators must also consider fiber diversity, water availability, construction labor, and whether facilities can support liquid cooling and AI rack densities approaching or exceeding 100 kW.
"Operators are favoring jurisdictions with clear planning frameworks, supportive local governments and an established process for accommodating large energy users," Desseyn noted. Where policies remain unsettled or community opposition is strong, projects are more likely to be redesigned, delayed, or redirected.
Planning and community acceptance are becoming equally important as authorities scrutinize resource consumption, incentives, environmental effects, and permanent job creation. The next investment cycle will favor markets demonstrating delivery certainty. "The winning regions will not necessarily be those offering the cheapest land or electricity, but those able to provide a credible and coordinated path through power procurement, planning, construction and community approval," Desseyn explained.