Nassau County unveils data center draft rules after summer review

Nassau County has released the first draft of a comprehensive data center regulation framework, kicking off a three-month public comment period that will shape how — and whether — the fast-growing county allows large-scale server facilities to locate within its borders.

The Nassau County Board of County Commissioners on Oct. 21 published an initial report from a fact-finding committee established in May and opened an online portal for resident feedback. The draft includes proposed land-use regulations for data centers, data processing facilities, and cryptocurrency mining operations, all of which have been under a temporary development moratorium since June. Public comment will be accepted through Jan. 8, 2027, followed by a series of formal public hearings in December and January.

What's happening

The Nassau County Fact-Finding Committee on Data Center Development, a research body composed of county staff, was established by the Board of County Commissioners on May 20. The committee's charge was to conduct an objective review of the operational characteristics, infrastructure demands, environmental considerations, and community impacts associated with data center development in Nassau County.

The committee held public meetings over the summer that featured presentations from subject matter experts and allowed residents to provide comments. Those meetings and the testimony offered are included in the initial draft report, which the BOCC released Oct. 21.

The comprehensive report outlines critical data points, recommendations, and draft regulations for the commissioners' consideration. According to the county, the committee is a research-based body rather than a decision-making board, and its findings are intended to inform policy options but are not considered adopted policy.

A website portal at nassaucountyfl. com/1528/Data-Centers has been created for the public to review the initial draft report and submit comments. The public comment window remains open until 11:59 p. m. on Jan. 8, 2027.

The BOCC approved Ordinance No. 2026-044 on June 8, imposing a temporary moratorium for up to 12 months on the acceptance, review, or approval of applications for development permits, development orders, rezoning, or site plans related to data center facilities. That moratorium, which runs through June 2027, paused all new data center applications while the county studied the issue.

Why Nassau County is grappling with data centers

Nassau County sits at the northern edge of the Jacksonville metropolitan area and has become one of Northeast Florida's fastest-growing counties, driven by the Wildlight master-planned community near Yulee and residential expansion along the A1A and SR 200 corridors. The same factors that attract homebuilders — proximity to Jacksonville's fiber networks and JEA's large-scale municipal utility infrastructure, plus relatively affordable land — also make the county attractive to data center developers.

Data centers are among the most infrastructure-intensive commercial land uses. Projects of this type typically require utility-scale electric service agreements to handle loads that can range from tens to hundreds of megawatts, depending on the size of the facility. They also consume significant volumes of water if they use evaporative cooling systems. In return, they generate large property-tax revenues relative to their footprint but create few permanent jobs compared to warehouses or manufacturing facilities of similar capital investment.

The infrastructure and economic tradeoffs have become flashpoints in rural and suburban counties across the United States, where residents weigh tax-base gains against the strain on electric grids, water supplies, and the character of low-density areas. In Florida, counties control land-use regulation outside municipal boundaries, so the Nassau BOCC's decision on whether and how to allow data centers will directly determine the type of development permissible on unincorporated land.

Nassau's deliberate, public process reflects the tension between the county's aggressive residential and commercial growth — Wildlight alone is planned for thousands of homes over the next decade — and residents' concerns about the pace and type of development arriving in what was, until recently, a quiet coastal and agricultural county.

What the draft regulations could mean for infrastructure

While the county has not released the specific text of the proposed land development regulations, the fact-finding committee's mandate included evaluating infrastructure demands. For any data center approved in Nassau County, the most immediate local effects would be on the electric grid and water supply.

Nassau County is served by Florida Power & Light, the state's largest investor-owned utility. A single large data center can demand as much electricity as a small city; a facility in the 50- to 100-megawatt range, not uncommon for hyperscale cloud or colocation operators, would require new substations, transmission upgrades, or dedicated distribution lines. Under Florida's regulatory framework, FP&L would typically require the developer to fund a portion of the necessary infrastructure or enter into a service agreement that outlines cost-sharing and construction timelines.

Water demand depends on cooling strategy. Air-cooled data centers use less water but more electricity; evaporative cooling reduces electric load but requires a steady supply of makeup water to replace what evaporates. Nassau County's water supply comes from the Floridan Aquifer, managed under consumptive-use permits issued by the St. Johns River Water Management District. A large facility seeking millions of gallons per day would likely need its own SJRWMD permit and could raise questions about aquifer drawdown and impacts on nearby wells, particularly in areas not served by central water systems.

The county's draft regulations will determine whether data centers are allowed by right in certain zoning districts, allowed only as conditional uses subject to case-by-case review, or prohibited outright in residential or environmentally sensitive areas. Typical regulatory controls for high-impact industrial uses include setbacks from property lines, noise limits at the fence line (cooling equipment and backup generators can be loud), stormwater performance standards, and minimum parcel sizes.

How residents and businesses could be affected

For residents living near parcels zoned for industrial or commercial use — particularly along the US 17 and SR 200 corridors or near Interstate 95 interchanges — the committee's recommendations will define what kind of neighbor a data center could be. The most common resident concerns in other communities have centered on noise from cooling fans and emergency generators, nighttime lighting, heavy truck traffic during construction, and whether facilities are compatible with nearby residential neighborhoods.

Property-value effects are difficult to predict without knowing facility design and location, but proximity to industrial-scale infrastructure can be a negative for residential buyers if noise, appearance, or traffic are factors. Conversely, data centers add to the commercial tax base, which can ease the burden on residential taxpayers if the county captures significant ad valorem revenue without a corresponding demand for schools, roads, or other services that residential growth requires.

For the business and economic-development community, the regulations will signal whether Nassau County is open to a sector that has become a major driver of commercial real estate absorption in Northern Virginia, metro Phoenix, and parts of Texas. A restrictive ordinance could push data center developers to neighboring Duval County — where Cecil Commerce Center on Jacksonville's Westside offers thousands of acres of industrial-zoned land with JEA electric and water service — or to St. Johns County's industrial corridors along International Golf Parkway.

The committee's work comes as Nassau County is also managing rapid residential growth, school capacity constraints, and debates over the pace of conversion from rural to suburban land uses. The data center question is part of a broader community conversation about what kind of growth the county wants and can absorb.

What happens next

The BOCC has scheduled two public workshops where residents can participate and provide feedback in person: Monday, Oct. 26, from 3 to 5 p. m. in the BOCC Commission Chambers in Yulee, and Monday, Nov. 9, from 3 to 5 p. m. at the same location.

According to the county, a final report will be posted on the website portal for review before the Thanksgiving holiday. That final report will incorporate public feedback received during the comment period and at the October workshops.

Following the workshops, the BOCC will hold formal public hearings to consider next steps on proposed data center development. The hearings are scheduled for Tuesday, Dec. 1 (Planning and Zoning Board public hearing on Nassau County Land Development Regulations), Monday, Dec. 14 (BOCC public hearing on Land Development Regulations), and Monday, Jan. 25, 2027 (BOCC public hearing on Land Development Regulations).

Residents can submit written comments through the county's online portal at nassaucountyfl. com/1528/Data-Centers until 11:59 p. m. on Jan. 8, 2027. The portal also hosts the initial draft report, meeting materials, and information on the temporary moratorium.

The moratorium, which took effect in June, runs for up to 12 months and will expire no later than June 2027 unless the BOCC adopts permanent regulations before that date. Any data center applications submitted during the moratorium period remain on hold until the BOCC acts.

Nassau's choice in Northeast Florida's growth wave

Nassau County's deliberations on data centers arrive at a pivotal moment for Northeast Florida's development trajectory. The region has attracted billions of dollars in industrial, logistics, and technology investment over the past five years, drawn by the same assets Nassau offers: available land, relatively low costs, highway and fiber connectivity, and proximity to Jacksonville's port, military installations, and urban labor pool.

How Nassau County regulates data centers will help define whether the county's growth continues to tilt toward rooftops and residential-driven tax base — the Wildlight and Amelia Island model — or opens the door to large-scale commercial and industrial users that bring a different mix of fiscal benefits and infrastructure demands. The answer will shape the county's landscape, budget, and identity for decades.

Residents have until early January to weigh in before the commission makes a decision that will outlast the current moratorium and set the ground rules for one of the 21st century's most land- and resource-intensive industries.