Cobb County, GA

Bells Ferry Road Data Center

MMM Acquisitions LLC. Approved. 108 MW.

A 108 megawatt data center campus at 1751 Bells Ferry Road in Marietta, Cobb County, on 31.4 acres rezoned from retail commercial to light industrial. The plan calls for two buildings (about 213,600 and 133,600 square feet) totaling 347,000 square feet, up to 105 feet tall, with a closed-loop water cooling system and a developer-funded on-site substation exceeding 100 million dollars. The Marietta City Council approved the rezoning unanimously (7-0) on June 17, 2025; residents organized opposition (stopcobbdatacenter.com) over noise, water use, and only an estimated 5 to 20 permanent jobs.

Status: Approved
Operator: Not disclosed
Applicant on record: MMM Acquisitions LLC
Location: 1751 Bells Ferry Road, Marietta, Cobb County, GA
Size: 108 MW, 31 acres, 347,000 sq ft
Cooling: Closed loop (low water)
Utility: MEAG Power
Last updated: June 17, 2025

Sources

108MW data center campus granted zoning approval outside Atlanta, Georgia, Data Center Dynamics
Not For Us - Bells Ferry Road Data Center, Cobb County, stopcobbdatacenter.com

What it would mean nearby

Base rate freeze through 2028 (docket 44280) holds base rates flat from July 2025. Fuel and storm riders are separate and can still move. 2026 fuel and storm cost settlement (docket 44280, 56765) takes about $4.04 a month off a typical bill from June 2026. The December 2025 certification of about 9,885 MW of new generation for data center load came with a promise of at least $8.50 a month of downward pressure on a typical bill in 2029 through 2031, because large customers are meant to carry more of the cost. Consumer groups warned it could instead add around $20 a month if the projected data center demand does not show up.

For a noise estimate and the three distance rings, check your own address.