Critical Infrastructure
Battery storage for critical infrastructure and essential loads
Critical infrastructure requires power systems designed with redundancy, fast response, and controlled operation under all conditions. Battery energy storage systems (BESS) provide fast backup response, system stability, and extended runtime, typically deployed alongside UPS and generator systems.
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Plan backup for your critical loads
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03 Define the next step
Your selected solutionCritical Infrastructure
Reliability that stands up to the grid
Critical infrastructure power continuity
How storage protects critical infrastructure
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1Redundant battery architecture supports critical loads with no single point of failure
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2A UPS system provides instantaneous transfer for zero-interruption loads
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3BESS supplies sustained backup power following the initial transfer event
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4Generators or additional sources provide extended runtime for prolonged outages
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5Control systems coordinate all assets to maintain stability and prioritise critical loads
Typical configuration envelope
Critical infrastructure systems are designed around layered reliability: UPS handles instantaneous transfer for sensitive loads; BESS delivers sustained energy supply and system stabilisation; generators provide long-duration backup for extended outages. BESS enhances system reliability but does not replace UPS in zero-interruption applications.
| Parameter | Typical Range |
|---|---|
|
Architecture
Depending on criticality level
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N+1 or 2N redundancy |
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Transfer Performance
Following initial transfer
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UPS: milliseconds · BESS: fast-response |
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Availability Target
Designed to match system architecture
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Project-specific reliability requirements |
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Autonomy
Extended via generator or additional sources
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Minutes to several hours from BESS |
Critical Infrastructure – Deployment Case Study
A data centre experienced risk exposure during transition events between UPS and generator systems, with failure scenarios leading to operational and financial impact.
A battery energy storage system was deployed alongside existing UPS and generator infrastructure to provide additional redundancy and extended runtime during transition and outage conditions.
- Improved system stability during transition events
- Reduced generator runtime and cycling
- Increased overall resilience of the backup power system

Plan critical infrastructure backup
Start with a schedule of critical loads and the transfer performance each load requires. Then define the roles of the battery, UPS and generators together. Critical infrastructure planning also needs clear operating reserves, recharge arrangements and maintenance procedures so continuity requirements guide the complete system.
Compare BX commercial battery systems or discuss your site requirements. For background, see the U.S. Department of Energy’s energy storage research and resources.