Fort Gillem data center campus (Digital Realty ATL15/ATL16)
Also called: ATL 15 and 16
Digital Realty plans a 1.9 million-square-foot data center campus on part of the old Fort Gillem base in Forest Park. The company said it would have more than 200 megawatts and cost more than $2 billion. The state filing lists up to 3 million gallons of water a day.
Where things stand: Filed for state review in May 2025. We found no later news.
🕒 Latest update (Sept 22, 2025): The regional commission issued its finding on the project.
What we know
- 📍 WhereAbout 97 acres of the former Fort Gillem Army base, Forest Park, Clayton County
- 🏢 CompanyDigital Fort Gillem, LLC
- 🏛️ Owned byDigital Realty
- 🌳 Size97 acres
- ⚡ Power it needs200 megawatts (about as much as 160,000 homes)
- 💧 WaterClayton County Water Authority · 3,000,000 gallons a day
- 💵 Cost$2.5 billion
❓ Still unanswered
Nobody has answered these in public yet. Can you help find out?
- Will it really use 3 million gallons of water a day, or less with a different cooling system? 🙋 I'll find out
- Has construction started? 🙋 I'll find out
- Was a tax break given? 🙋 I'll find out
What happened so far
- May 30, 2025City of Forest Park filed Digital Realty's 1.9 million square foot campus for state regional review (DRI #4482).
- Sept 22, 2025The regional commission issued its finding on the project.
Local votes and rules
⏸️ Pause on new data centers
Forest Park's city council approved a 90-day pause on data centers to write zoning changes. Data centers had been allowed by right, which let Digital Realty build there. The new rules would define data centers, set buffers from homes and add a community advisory committee.
An aerial photo of the area.
Where this comes from
- DRI #4482: ATL 15 and 16 (Development of Regional Impact filing) · Georgia Department of Community Affairs · May 30, 2025
- DRI #4482: ATL 15 and 16, Additional Information Form · Georgia Department of Community Affairs · May 30, 2025
- Large data center pitched for former Fort Gillem site south of Atlanta · The Atlanta Journal-Constitution · June 2025
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