AWS St. Joseph County Indiana Data Center Campus
Status: Active Construction & Operational Expansion | Location: Indiana Enterprise Center footprint, New Carlisle, St. Joseph County, Indiana 46552, USA
Project Overview
Amazon Web Services’ (AWS) $26 billion multi-campus development in St. Joseph County, Indiana, represents one of the largest digital infrastructure investments in North American history. Building upon an initial $11 billion commitment in New Carlisle, AWS expanded the master plan with an additional $15 billion allocation to deliver 2.4 gigawatts (2.4 GW) of cumulative IT and facility capacity across Northern Indiana. Engineered specifically as a core processing node for generative AI and frontier computing models including custom AWS Trainium/Inferentia silicon and dense NVIDIA GPU clusters the campus provides the underlying infrastructure for high-throughput AI workloads like Project Rainier. The campus footprint spans dozens of modular multi-story data hall structures integrated with dedicated high-voltage substation switchyards. Power distribution is secured through a landmark long-term agreement with Northern Indiana Public Service Company (NIPSCO), which provides high-voltage transmission interconnects backed by regional renewable power purchase agreements (PPAs). Sustainability and resource conservation are built into the facility design. The site utilizes AWS’s advanced liquid-to-chip direct cooling and dry-cooling closed-loop architectures, minimizing water consumption during peak thermal operational cycles. The development acts as a massive economic anchor for Northern Indiana, supporting over 1,100 direct high-tech roles, thousands of union construction jobs, and partnerships with local technical institutions.
Quick Facts
| Field | Value |
|---|
| Project Name | AWS St. Joseph County Indiana Data Center Campus |
| Location | Indiana Enterprise Center footprint, New Carlisle, St. Joseph County, Indiana 46552, USA |
| Status | Active Construction & Operational Expansion |
| Commissioning | H1 2025 (Initial Phase Live) |
| Total IT Load | 2,000 MW |
| Total Capacity | 2,400 MW (2.4 GW master-planned campus grid capacity) |
| Tier Level | Tier III Compliant System Architecture Standards |
| Project Type | Greenfield Hyperscale Cloud & Frontier AI Supercomputing Megahub |
City Profile
| Header | Details |
|---|
| City Name | Indiana |
| Population | ~6.83 million |
| Urban Agglomeration | Major metros: Indianapolis ~2.1M, Chicago metro (IN portion included) |
| City GDP | ~$450 billion (state GDP) |
| Per Capita Income | ~$58,000 |
| City Tier | Tier 1 (Developed U.S. state with strong industrial base) |
| Key Strengths | Manufacturing hub (automotive, steel), logistics & transportation, growing data center market, central U.S. location, strong infrastructure, affordable power |
Companies Involved
| Header | Details |
|---|
| Developer / Operator | Amazon Web Services |
| Strategic Infrastructure Partner | Northern Indiana Public Service Company (NIPSCO), St. Joseph County Board of Commissioners, Indiana Economic Development Corporation (IEDC) |
| Construction Contractor | Mortenson Construction / Pepper Construction Joint Venture & Specialized Mission-Critical EPC Partners |
| MEP Engineering | AWS Infrastructure Design & Specialized Global Engineering Partners |
| Network Connectivity | Subterranean concrete fiber vaults, redundant terrestrial dark fiber trunks to Chicago Infomart, and dual Meet-Me-Rooms. |
| Power Infrastructure | Direct connection via dual 345kV high-voltage utility substations engineered by NIPSCO. |
Technical Specifications
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| Power Capacity | 2,400 MW (2.4 GW) gross utility substation design capacity |
| UPS Redundancy | N+1 block-isolated static UPS systems backed by containerized emergency standby diesel generator arrays with bulk fuel storage. |
| Cooling System | Direct-to-chip liquid cooling manifolds combined with closed-loop dry cooling systems for ultra-low water utilization. |
| Connectivity | Carrier-neutral design featuring four physically separated subterranean concrete fiber entry vaults and dual Meet-Me-Rooms. |
| PUE Target | 1.13 |
| Energy Mix | Matched with 100% clean energy via NIPSCO green tariffs, regional wind, and solar Power Purchase Agreements (PPAs). |
Milestones
| Header | Details |
|---|
| Announcement | April 2024 (Initial $11B) / November 2025 (Expanded $15B) |
| Construction Start | Q3 2024 |
| Phase 1 Go-Live | H1 2025 |
| Full Buildout | 2032 (Phased commissioning across full 2.4 GW campus footprint) |
Investment Details
| Header | Details |
|---|
| Total Investment | $26,000,000,000 USD ($11B initial + $15B Northern Indiana expansion) |
| Funding | Direct corporate capital expenditure via Amazon.com, Inc. balance sheet reserves |