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An ordinance amending Title 17 of the Metropolitan Code of Laws, to add various new data center uses and related definitions and conditions to the Zoning Code (Proposal No. 2026Z-012TX-001).
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BE IT ENACTED BY THE COUNCIL OF THE METROPOLITAN GOVERNMENT OF NASHVILLE AND DAVIDSON COUNTY:
Section 1. That Section 17.04.060 of the Metropolitan Code is hereby amended by adding the following new definitions in alphabetical order:
"Closed loop system" means a system that constantly reuses and recycles an initial load of water within its operation, reducing the draw on external water sources and minimizing wastewater discharge. A closed loop system shall not use evaporative cooling, and may consist of methods including, but not limited to, air-cooled (dry) cooling, rear-door heat exchanger cooling, hybrid dry economizer cooling, direct-to-chip cooling, or immersion cooling.
"Data center" means a physical room, building, or facility primarily used for housing and operating computer systems and associated equipment, including servers, data storage and processing systems, and accessory infrastructure such as cooling systems, power generators, electrical substations, and network hardware. Data center includes "data center - accessory", "data center - small", "data center - medium", "data center - large", and "data center - campus". The square footage of a data center shall include the total square footage of each floor in the data center development, the square footage of any supporting uses, and the square footage of any additional exterior equipment, such as substations, electrical yards, mechanical yards, and all other exposed equipment, located within the property boundaries.
"Data center - accessory" means a data center of 5,000 square feet in size or less that has a maximum utilization capacity of 1MW of electricity and is accessory to another principal use. The principal use shall utilize more square footage than the data center.
"Data center - campu...
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