CyrusOne MIL1: 27MW Eco-Sovereign Data Center Milan
Status: Under Construction (Groundbreaking March 25, 2026) | Location: Via delle Regioni, Segrate, Lombardy
Project Overview
Officially breaking ground on March 25, 2026, the CyrusOne MIL1 data center is a state-of-the-art €250 million infrastructure project that marks the company's inaugural entry into the highly strategic Italian digital market. Located in the Segrate municipality of Greater Milan, the three-story facility is designed to deliver 27MW of critical IT capacity across 7,000 square meters of technical space, divided into three specialized 9MW data halls. Engineered to support the dual demands of massive cloud architecture and high-density enterprise workloads, MIL1 serves as a crucial Southern European connectivity platform linking Western Europe with emerging digital corridors across the Mediterranean. The project stands out as an urban regeneration benchmark, transforming a long-abandoned industrial zone while contributing over €6 million toward local community improvements, including photovoltaic installations on public schools and the preservation of the adjacent 700,000-square-meter Golfo Agricolo biodiverse parkland. Operating on 100% renewable energy and aiming for a prestigious BREEAM 'Very Good' rating, the campus incorporates advanced closed-loop cooling configurations and a built-in heat recovery system designed to capture waste thermal energy for prospective integration into Milan's municipal district heating networks.
Quick Facts
| Field | Value |
|---|
| Project Name | CyrusOne MIL1: 27MW Eco-Sovereign Data Center Milan |
| Location | Via delle Regioni, Segrate, Lombardy |
| Status | Under Construction (Groundbreaking March 25, 2026) |
| Commissioning | Phase 1 Go-Live: Mid-2027; Full Buildout: 2028 |
| Total IT Load | 27 MW |
| Total Capacity | 35 MW (Utility Allocation) |
| Tier Level | Tier III+ (High Availability Standard) |
| Project Type | Hyperscale / Retail Colocation Hub |
City Profile
| Header | Details |
|---|
| City Name | Milan |
| Population | ~1.4 million |
| Urban Agglomeration | ~3.2 million |
| City GDP | ~USD 220–240 billion |
| Per Capita Income | ~USD 60,000–65,000 |
| City Tier | Alpha Global City |
| Key Strengths | Global financial and fashion capital |
Companies Involved
| Header | Details |
|---|
| Developer / Operator | CyrusOne |
| Strategic Infrastructure Partner | Municipality of Segrate / Lombardy Regional Authority |
| Construction Contractor | Confidential (Italian General Contractor Specialist) |
| MEP Engineering | Deerns / Arup Italy |
| Network Connectivity | Carrier-Neutral Backbone / Direct Fiber Mix |
| Power Infrastructure | E-Distribuzione (Enel Group) |
Technical Specifications
| Header | Details |
|---|
| Power Capacity | 35 MW Total Utility Connection |
| UPS Redundancy | N+1 Block Redundant Configuration |
| Cooling System | Closed-Loop Air Chillers with Waste Heat Recovery Capabilities |
| Connectivity | 3+ Diverse Terrestrial Fiber Entries; Low-latency Edge Nodes |
| PUE Target | 1.20 |
| Energy Mix | 100% Renewable Energy via Local PPAs & Photovoltaic Integration |
Milestones
| Header | Details |
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| Announcement | Q4 2024 |
| Construction Start | March 25, 2026 |
| Phase 1 Go-Live | June 2027 |
| Full Buildout | Late 2028 |
Investment Details
| Header | Details |
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| Total Investment | €250 Million+ USD (Initial Campus Valuation) |
| Funding | Corporate Capital Expenditure (CyrusOne / KKR / GIP Portfolio) |