Data centers require a Conditional Permitted Use petition, including project details, a site plan, utility-service letters, roadway-access approval, and other information that may be required under the ordinance. “petition for a Conditional Permitted Use”

Buildings, including roof-mounted equipment and antennas, may not exceed 100 feet. “Shall not exceed one hundred (100) feet”

A minimum 150-foot setback is required from property lines forming the project area's outside perimeter. “minimum of one hundred fifty (150) feet”

Residential-structure setbacks are 750 feet for data centers 25 feet high or less, and 30 times the facility height for taller data centers. The setback may be reduced to 200 feet if the affected property owner provides a signed, notarized waiver that is recorded with the County Recorder. “thirty (30) times the height”

A fence at least six feet high must enclose and secure the data center and comply with Chapter 17.44. “A fence of at least six (6) feet”

Landscaping screening is required for portions visible from and within 500 feet of an existing dwelling. It is not required when existing topography makes the data center not visible to a dwelling, as determined by the Zoning Administrator. “within five hundred (500) feet of an existing dwelling”

Any project lighting must be shielded and directed downward so it does not spill onto an adjacent parcel. “lighting shall be shielded and downcast”

Noise measured at the property line may not exceed 50 decibels when the data center is adjacent to an existing residence or residential district. “shall not exceed fifty (50) decibels”

Data centers must conform to applicable industry standards, including Underwriters Laboratory standards, and follow applicable county, state, and federal codes and regulations. “shall conform to applicable industry standards”

Before a building permit is issued, applicants must submit an updated site plan, an emergency plan, required compliance studies and approvals, Illinois DNR EcoCAT results, and State Historic Preservation Office consultation results. A certificate of compliance follows an approved final inspection. “Before a building permit is issued”

A certificate of occupancy is issued after final inspections and requires annual approval. The annual submission must include active insurance information, owner or operator contact information, and any site alterations; the annual fee is $500. “Annual fee $500”

A battery energy storage system may be located on the same parcel as a data center as an accessory use, without a variance for multiple principal uses on one lot (“without requiring a variance”).