Data Centers

Medina County, Texas

CyrusOne is developing a data center campus in Medina County near Castroville, approximately 20 miles west of San Antonio along the US-90 corridor. The campus will provide the secure digital infrastructure that supports essential services, including healthcare, education, banking, business operations, government services and emergency communications.

Medina

Project Timeline

The Medina County campus is planned as a phased development. Individual buildings and related infrastructure will be constructed and brought online over time.

Site Preparation and Grading
Status: In progress
Initial site preparation and grading work is underway. The project’s general contractor is using dust-control measures that include spraying the ground before excavation and dirt offloading, covering dirt stockpiles and adjusting work during high-wind conditions.
Initial Campus Construction
Status: Current phase
Construction of the initial campus infrastructure and data center facilities will proceed following site preparation.
Future Campus Phases
Status: Planned
Additional buildings may be developed in phases based on future demand and project requirements.
Campus Operations
Status: Future
As individual facilities are completed, they will be brought into operation and staffed by technical operations, facility management and other essential support personnel.
Data centre worker with tablet computer in data centre

What is a data center?

Data centers power the digital world we depend on every day. These specialized facilities house the servers and infrastructure that process and store the information behind every online interaction—from streaming services and telehealth appointments to banking transactions and emergency response systems. As demand for artificial intelligence and cloud computing grows, so does the need for modern data center infrastructure.

Data Centers

Bosque County, TX

CyrusOne is developing a state-of-the-art data center campus in Bosque County, TX. We're committed to being a responsible community partner, driving local economic opportunity, prioritizing environmental responsibility and contributing to the region's continued prosperity.

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Inside CyrusOne’s Air-Cooled Data Center Design

Planning-Before-a-Data-Center-Is-Built

Inside the Planning Before a Data Center Is Built

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FAQ FOR MEDINA COUNTY, TX

What is a data center and who is CyrusOne?

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What is a data center? 

A data center is a physical facility that stores and processes data behind everything digital. Every time you send an email, receive a direct deposit, check your bank account, attend an online class, access healthcare, stream a movie, make an online purchase, use GPS navigation, or contact emergency services, that information is processed through a data center. 

From education and healthcare to banking, business operations, and government services, data centers securely store and process the information that keeps modern life connected. 

 

Who is CyrusOne? 

 CyrusOne is a global data center owner, developer, and operator with more than 25 years of experience and more than 60 data centers across the United States, Europe, and Japan.   

Where is this facility located?

The facility is located in Medina County, Texas, near Castroville, approximately 20 miles west of San Antonio along the US-90 corridor. 

Why was this location selected?

Medina County offers the combination of available land, access to reliable power infrastructure, and proximity to a skilled regional workforce. These factors make the location well suited for a data center campus. The site also provides access to regional transmission infrastructure and is located near the San Antonio market, which supports long-term demand for digital infrastructure. 

Who is CyrusOne’s tenant?

While we cannot disclose our customers’ names due to confidentiality agreements, we can tell you that we work with Grade A companies who share our commitment to responsible development, safe operations, and being a good neighbor.

How will the project be powered, and what impact will it have on the local electric system?

The campus is to be served through dedicated transmission infrastructure designed specifically for the facility and funded by CyrusOne. This infrastructure is designed to support the project’s power needs without relying on existing neighborhood distribution systems that serve homes and local businesses.

All project-related transmission interconnection and power delivery costs are paid directly by CyrusOne, not local taxpayers or residents.

Medina Electric Cooperative, South Texas Electric Cooperative, and regional grid operators evaluate large energy users through a detailed review process before service is approved to help ensure grid reliability is maintained. Data centers like this are required to meet the same reliability and infrastructure standards as other large industrial users.

How are data centers regulated?

Data centers are subject to applicable federal, state, and local environmental, building, fire safety, and operational regulations.

Key areas of oversight for this project include:

  • Backup generators regulated under EPA and applicable state air quality standards
  • Closed-loop cooling systems designed to minimize water use and avoid ongoing cooling discharge during normal operations
  • Sanitary wastewater from restrooms and sinks handled through code-compliant systems
  • Site development reviewed through local planning, zoning, stormwater, and building permitting processes

Operations must comply with applicable environmental regulations, including EPA standards, applicable state environmental requirements, and local ordinances.

How much water will the data center use, and how will the closed-loop cooling system work?

CyrusOne uses closed-loop cooling technology designed to minimize water consumption. Daily water usage at the campus will primarily support restrooms, basic facility operations, and limited humidification.

A closed-loop cooling system continuously circulates water within a sealed system inside the building to remove heat. Because the system remains closed after the initial fill, there is no ongoing wastewater discharge associated with the cooling process and no routine release to surrounding soil or groundwater.

Each building is expected to use approximately 1,100 gallons of water per day on average. For comparison, a 50,000-square-foot grocery store uses approximately 3,000 gallons of water per day, based on U.S. Energy Information Administration commercial building water-use benchmarks.

Source: U.S. Energy Information Administration (EIA), 2012 Commercial Buildings Energy Consumption Survey: Water Consumption in Large Buildings Summary. The report states that large commercial buildings use an average of 55.6 gallons per 1,000 square feet per day.

Will water use strain local supplies or affect water rates and availability?

No. CyrusOne uses closed-loop cooling technology designed to minimize water consumption. Closed-loop cooling has been the standard across CyrusOne facilities for more than 15 years because we recognize water is a valuable resource and design our campuses to use it responsibly.

Water use at the campus will primarily support restrooms, basic facility operations, and limited humidification. Water used for the initial fill of the closed-loop cooling system will be delivered to the site rather than drawn from local water supplies.

Because the cooling system operates as a sealed, closed-loop system, there is no ongoing discharge from the cooling process during normal operations.

Are there risks of groundwater contamination from coolant systems or chemicals used?

No. The campus uses a sealed, closed-loop cooling system designed with no ongoing discharge from the cooling process during normal operations.

The cooling system is self-contained and does not discharge to soil or groundwater. The system uses a water-based solution with standard treatment additives, such as corrosion inhibitors and microbiocides, to help maintain system performance and protect equipment. Any system maintenance involving fluids is handled by licensed contractors in accordance with applicable environmental regulations.

Non-cooling wastewater from restrooms and basic facility operations will be managed through code-compliant systems designed to protect soil and groundwater quality.

How are backup generators used and regulated?

Backup generators include modern emissions controls and are subject to EPA and applicable state air quality regulations.

Generators are used infrequently — primarily for required maintenance testing and during emergency power interruptions. Testing and operation are regulated under applicable environmental permits and emissions standards.

How is the facility designed to manage sound?

Sound levels will meet local ordinances.

Our cooling systems and emergency generators are designed to meet or exceed applicable noise regulations. We use low-noise fans, sound-attenuated compressor and generator enclosures, and critical-grade exhaust silencers on emergency generators to help minimize sound. Backup generators are used only as needed for maintenance, testing, and rare utility outages. If you have concerns once the facility is operational, please contact us directly at communities@cyrusone.com.

Sound mitigation measures include:

  • Sound-attenuated cooling equipment
  • Sound-attenuated emergency backup generator enclosures
  • Critical-grade exhaust silencers on emergency backup generators
  • Acoustic barriers around chiller and generator equipment

Will the facility be brightly lit at night?

No. Data centers do not require brightly lit outdoor work areas during normal operations. Exterior lighting is limited to what is needed for safety and security. Lights are directed downward, shielded to reduce light spill beyond the property, and designed to minimize impacts on neighboring properties while maintaining a secure facility.

How has CyrusOne addressed dust mitigation in early stages of construction?

CyrusOne has worked with its general contractor to reduce dust during the early earth-moving and grading phase of the project by increasing water spraying before excavation and dirt offloading, covering dirt stockpiles, and adjusting work schedules on high-wind days to limit dusty activities. The company also built rainwater collection ponds to support dust-control watering without placing added demand on local resources. Site superintendents and CyrusOne leadership regularly monitored the site to ensure these protocols are adhered to and our community engagement team has stayed in close contact with nearby residents.

How do you acquire land?

We work with landowners who choose to sell their properties. All land acquisitions are voluntary transactions with willing sellers.

What is the projected property tax benefit?

This project represents an expected capital investment of approximately $4 billion to $6 billion across multiple phases. The facility will generate ongoing property tax revenue that directly funds schools, first responders, and essential local services.

Tax revenue is only one component of the total economic impact. This 24/7 operation will increase demand for support services throughout the region, trigger local hiring, and provide hundreds of construction jobs throughout the development lifecycle.

How many permanent jobs will the data center create?

Once fully operational, the campus is expected to employ hundreds of permanent, full-time employees, supporting technical operations, facility management, and other essential support roles. Staffing levels scale as individual buildings are constructed and brought online, with positions drawing from a broad range of experience and skillsets, many of which do not require a college degree.

To help prepare local residents for data center careers, CyrusOne has established the CyrusOne Data Center Scholarship with Texas State Technical College, committing $15,000 annually to support residents/students pursuing data center careers.

To find out more about the CyrusOne Data Center Scholarship, please email communities@cyrusone.com.

Construction will also create hundreds of jobs over the multi-year build period across various trades and skilled labor.

We are committed to prioritizing regional workforce through Medina County workforce development programs, ensuring local workers and contractors get first opportunity. We will host a career fair with our construction and trade partners for the community to ensure local hiring and local networking opportunities.

How can community members ask questions or learn more about the project?

We are committed to open communication throughout development, construction and operations.

Community members can:

  • Attend future community meetings and project information sessions as they are scheduled.
  • Visit our project website for updates and answers to frequently asked questions.
  • Contact our team directly at communities@cyrusone.com or +1 (866) 297-8766 with questions or concerns.

We remain committed to listening, answering questions and addressing concerns throughout the life of the project.

How do I contact you with questions or concerns?

Email us at communities@cyrusone.com or call +1 (866) 297-8766.

We're committed to open communication and addressing questions and concerns throughout development, construction, and operations. Once operational, the facility will have staff on site 24 hours a day, 7 days a week.

What it means to have CyrusOne in your community

As a global leader in data center infrastructure, we understand that our responsibility extends beyond construction and operations. We hold ourselves to rigorous standards throughout every phase—from initial planning and construction through decades of operations. Our approach balances technical excellence with genuine responsiveness to community needs, building lasting partnerships that create meaningful local benefits.

Economic Impact

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  • Planned multibillion-dollar investment across multiple phases
  • Hundreds of construction jobs expected during development
  • Permanent careers supporting technical operations, facility management and other essential functions
  • Ongoing property-tax revenue supporting schools, first responders and essential local services
  • Opportunities for local contractors and skilled trades throughout the project lifecycle
  • CyrusOne Data Center Scholarship with Texas State Technical College, including an annual $15,000 commitment

 

Environmental Stewardship

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  • Closed-loop cooling technology designed to minimize water consumption
  • Campus design and operations will follow applicable federal, state and local environmental requirements
  • Sound-mitigation measures incorporated into site and building design
  • Exterior lighting designed to be shielded and directed downward to minimize light pollution
  • Backup generators used primarily for limited maintenance testing and rare utility outages
  • Construction dust-control measures include watering work areas, covering dirt stockpiles and adjusting activities during high-wind conditions

Community Partnership

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We have already partnered with several community organizations including:

  • Ongoing engagement with Medina County officials, community leaders and nearby residents
  • Direct channels for residents to ask questions, raise concerns and provide feedback
  • Community events and project communications posted on the microsite
  • Workforce-development support through the CyrusOne Data Center Scholarship with Texas State Technical College
  • Commitment to responsive communication throughout development, construction and operations
  • Additional Medina County partnerships will be added as they are finalized and approved


Upcoming Events
Public Notice
Project Communication
Past Events

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September 28-30, 2026


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Public Notice

September 30-30, 2026


Location Name

Description

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Project Communication

September 28-30, 2026


Location Name

Description

Registration link

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External link

Past Event

September 28-30, 2026


Location Name

Description

Registration link

Downloadable PDF

External link

Construction Timeline

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Project Title

Project phases: Mobilization, Construction, Completion

Project milestones: Sep 31, 2025 - Jan 31, 2026

Project completion timeframe: Sep 31, 2026

Project key activities: Development, QA, Approval, Deployment

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event-banner3

Project Title

Project phases: Mobilization, Construction, Completion

Project milestones: Sep 31, 2025 - Jan 31, 2026

Project completion timeframe: Sep 31, 2026

Project key activities: Development, QA, Approval, Deployment

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event-banner1

Project Title

Project phases: Mobilization, Construction, Completion

Project milestones: Sep 31, 2025 - Jan 31, 2026

Project completion timeframe: Sep 31, 2026

Project key activities: Development, QA, Approval, Deployment

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Sed quam velit, in eum quia temporibus nemo. Aliquam, cupiditate praesentium sunt sint nulla natus quas eaque saepe non consequatur sed deserunt.

Project Title

Project phases: Mobilization, Construction, Completion

Project milestones: Sep 31, 2025 - Jan 31, 2026

Project completion timeframe: Sep 31, 2026

Project key activities: Development, QA, Approval, Deployment

  • Construction job creation
  • Permanent high-tech career opportunities
  • Economic development impact

Contact the Project Team

Have a question, concern, comment or suggestion about the Medina County project? Please use the form below to contact the project team.

You may also email communities@cyrusone.com or call +1 (866) 297-8766.

CyrusOne is committed to open communication and addressing questions and concerns throughout development, construction and operations.