Data Center Power Systems — Built on Uptime

Even brief interruptions can disrupt financial transactions and platform availability. Carter works with developers, engineers, and construction teams to design power systems that support uptime, scalability, and long-term operational confidence.

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THE OPERATIONAL REALITY

Data Centers Operate at a Different Pace

Data centers are designed, built, and expanded simultaneously — often while future phases of the same campus are already being planned. Because outages can disrupt global digital services, they are typically designed for uptime approaching 99.999% availability.

Uptime Is the Metric That Matters

Financial transactions, government systems, and global AI workloads all depend on data centers staying on. Outages are measured in billions of dollars.
Schedule Drives Decisions

Delivery timelines carry as much weight as technical specifications. Customers need suppliers who can commit and execute.
Campuses Never Stop Expanding

Power infrastructure must anticipate future phases from the first conversation—not after design is locked.

CARTER’S ROLE

Early Stage Evaluation Is Critical

Data center power systems are rarely defined by equipment alone. Early design decisions — generator sizing, redundancy strategy, fuel infrastructure, and system layout — shape how the facility operates for decades. Carter teams work closely with developers, engineers, and contractors during these early stages, helping evaluate:

Generator sizing and system architecture
Redundancy strategies such as N+1 or 2N
Fuel storage and infrastructure planning
Manufacturing lead times and delivery schedules — critical when expansion is planned in phases

ENGINEERING DEPTH

When the Spec Meets the Site

Data center projects rarely proceed exactly as designed. Site constraints, acoustic requirements, and footprint limitations create conditions the original specification didn’t anticipate. Carter’s in-house engineering team works through those constraints directly — modifying equipment configurations, redesigning enclosures, and engineering around utility gaps.

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TECHNICAL DEPTH

System Design & Planning

Designed to Eliminate Single Points of Failure

Data center power systems follow a layered architecture designed to eliminate single points of failure. Utility power enters the facility and feeds UPS systems that provide bridge energy during the seconds it takes generators to come online.

Utility feed → UPS systems → standby generators form the core power chain
Automatic transfer switches (ATS) manage transitions between utility and generator power
Paralleling switchgear coordinates multiple generators as a unified system
Each layer operates independently, so no single failure brings down IT load

Sized beyond What the Load Requires

Data centers deploy generators in configurations that exceed the minimum capacity needed to carry load. The choice between architectures sets the operational ceiling for the facility — both for reliability and for how the system can be maintained without taking IT load offline.

N configuration — exactly enough generators to carry the load; no spare capacity
N+1 configuration — one additional generator beyond what is needed; a single layer of redundancy
2N configuration — fully duplicated generator plant; twice the capacity needed

Large hyperscale facilities may deploy 10 to 40+ generators. Paralleling switchgear manages these units, distributing load and enabling maintenance on individual generators without affecting the system.

Permitting Can Drive Your Timeline

Standby generator systems must comply with electrical, environmental, and safety standards that influence system design and equipment layout. Common requirements include:

NEC / NFPA 70 — National Electrical Code
NFPA 110 — Emergency and Standby Power Systems
NFPA 37 — Engine installation standards
Uptime Institute Tier guidelines — system reliability classifications
Air permitting requirements for diesel generators
Local noise and acoustic regulations

Environmental permitting and local approvals can significantly affect project timelines and should be addressed early in planning.

Maintaining Readiness between Outages

Even highly engineered standby power systems depend on disciplined maintenance and testing to ensure readiness. Typical lifecycle activities include:

Routine generator service and inspection
Battery and starting system monitoring
Annual load bank testing
Emissions testing and reporting
Rapid response to operational issues once facilities enter service

In mission-critical environments, operators evaluate not only generator performance but also the service network supporting the equipment.

Case Studies

Data Center Projects in the Field

Custom Generator Enclosure Solution

A data center operator needed custom generator enclosures to address site-specific exhaust backpressure constraints. Carter’s engineering team worked directly with the enclosure manufacturer to redesign airflow paths and exhaust routing, ensuring the generators met performance specifications within the physical limits of the site.

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Hyperscale Campus Deployment

Carter supported a multi-phase hyperscale campus, deploying generators across multiple buildings on a two-year construction timeline. Each phase required coordination with the general contractor, electrical engineer, and facility operations team to integrate new generators into expanding campus power infrastructure.

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Why Carter

Built for Complex, Multi-Phase Projects

Data center customers choose Carter because of how complex projects are executed. Collaboration with developers, engineers, and contractors begins early — during design, before key decisions are finalized — and continues through procurement, delivery, and commissioning.

Early Engineering Collaboration

Engagement with developers, consulting engineers, and general contractors from design-phase decisions through equipment specification and procurement.

Large-Scale Project Experience

Direct experience supporting large generator deployments, parallel systems, and multi-unit configurations for hyperscale and enterprise data center builds.

Manufacturing Lead Time Visibility

Insight into Cat equipment production schedules and delivery timelines, helping customers plan complex multi-phase construction with greater confidence.

Long-Term Service Support

Engineering and field technician teams providing commissioning support, preventive maintenance, and emergency response after project completion.

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Planning Your Next Data Center Project?

Carter engineers are available to discuss your project, review system requirements, and help get the design right from the start.