As the level of government closest to residents, mayors have both the trust and legal authority to decide where, if, and how to build data centers. Through regulatory and legal mechanisms, mayors can safeguard their communities. Developed in response to mayors’ requests, this resource outlines policy options for local governments seeking to ensure responsible data center development. This model law was developed primarily by the Model Climate Laws Initiative, in partnership with Climate Mayors, the Sabin Center for Climate Change Law at Columbia Law School, and Climate Xchange, developed this model law. Designed strictly for informational and educational use, this document does not constitute an endorsement or recommendation of any specific policy option.