Forty mayors from around the world have endorsed a new pact to influence the construction and operation of urban data centers. The agreement, announced Tuesday during London Climate Action Week, outlines a vision for sustainable urban data center development that avoids depleting natural resources, escalating energy prices, or hindering climate targets in their cities. This initiative was launched by C40 Cities, an alliance of nearly 100 cities focused on climate change mitigation.
Metropolitan areas face significant pressure from data center expansion, with approximately 1,700 such facilities already located within the C40 network of cities. Experts predict data center development will grow by over 40% in 50 of these cities. While many new data centers are being established in rural areas due to lower land costs, urban centers remain attractive for their proximity to firms requiring instantaneous responses from AI-powered systems and major companies needing to be near their business operations. Data centers often form clusters in metropolitan areas, a factor that can outweigh land cost considerations, according to Andrew Batson, global head of data center research at JLL.
The C40 Cities alliance became involved after the mayors of Phoenix and Melbourne, Australia, expressed concerns about data centers consuming large amounts of electricity and water, and competing with housing developers for available land. Cassie Sutherland, a managing director at C40, noted that challenges across different regions were remarkably similar, prompting the use of a global mayoral voice to establish conditions for accepting data centers.
Growing political and local opposition stems from fears about potential blackouts, increased electricity bills, and the substantial water requirements of these facilities. Some states are now suspending tax breaks or considering moratoriums on new data center construction in response to these concerns.
The pact addresses several key areas: strategic site selection, the use of clean energy, ensuring affordability, and fostering community engagement. These principles aim to guide future development in a manner that aligns with urban sustainability goals.
About half of the participating mayors are from the United States. These include leaders from Seattle, Palo Alto, Riverside, Phoenix, Albuquerque, Beverly, Lincoln, and Chicago. International signatories also contribute to the global scope of the agreement.
The long-term impact of this mayoral pact on the actual development and operational practices of data centers remains to be seen. The agreement represents a unified stance from city leaders, but its implementation will depend on local regulations, industry cooperation, and the evolving technological demands for data processing. Future developments will likely involve ongoing negotiations between municipalities and data center operators to balance economic growth with environmental and community well-being.
Observers will watch for specific policy changes enacted by signatory cities and how these policies influence investment decisions by major technology companies. The effectiveness of the pact will be measured by its ability to mitigate resource strain and promote sustainable practices as the demand for data infrastructure continues to expand globally.