Building a Fail-Proof Standby Fuel System for Data Centers

By Ben Inkrott

For modern data centers, uptime isn’t an option: It’s contractually and operationally required. With the explosion of workloads from artificial intelligence and cloud services, such facilities now place an unprecedented demand on fallible power grids.

But grid failures and extreme weather events loom as constant threats. More than half of major data center outages (54%) cause losses of over $100,000, the Uptime Institute reports, and 20% of outages cost more than $1 million. And the average cost of network downtime? About $336,000 per hour, according to Gartner.

When a grid failure occurs, generators must go live seamlessly. But a generator is only as reliable as its fuel supply. That’s why it’s imperative for data center facility managers to enact a structured, high-capacity standby power ecosystem. 

By transitioning from reactive, short-term solutions like emergency fuel deliveries to a scalable, on-site bulk fuel storage ecosystem, managers can secure absolute standby power for their facilities.

Here’s how high-capacity stationary tanks can provide critical standby for data centers, ready to deploy instantly during widespread outage events. 

Why Do Data Centers Need High-Capacity Stationary Fuel Tanks?

Large-scale stationary fuel tanks are the core of data center facility management. These high-capacity assets provide a primary defensive line to ensure your mission-critical facilities remain operational. 

Wet hosing – the regular delivering and dispensing of fuel directly from a truck to a generator – leaves a facility wholly dependent upon external factors and parties. If a large-scale grid failure occurs, a facility dependent upon wet hosing remains reactive and vulnerable to supply chain snags. In contrast, a data center keeping bulk fuel on-site has a critical buffer against delays. 

Since modern facilities need massive fuel reserves to support 48 hours of autonomous uptime amid an outage, generators on-site must have an immediate, uninterrupted fuel supply..

According to industry data from Generator Source, a standard 2-megawatt (2000 kW) standby generator at full load consumes 141.9 gallons of diesel every hour. That requires a baseline of 17,000 gallons of fuel for just one day of autonomous uptime for an average-sized 10MW facility with a five-generator configuration. 

High-capacity stationary tanks deliver crucial operational advantages to support this continuous draw:

• Operational autonomy: Guarantee days of continuous operation during grid failures without needing external logistics. 
• Environmental Compliance: Ensure strict compliance with local regulations thanks to double-walled, 110% containment designs on tanks like those from Western Global, eliminating secondary drip trays.

Read more about how bulk fuel storage stacks up to wet hosing in our guide. 

How Do You Design Fuel Infrastructure for Data Centers? 

Adhering to these three specific configuration and maintenance priorities can allow you to design an effective standby fuel farm for a modern data center: Scalability, fuel hygiene, and maintenance access. 

• Scalability: Utilize modular tank systems to build a fuel farm reservoir that can scale up so it doesn’t need entirely new infrastructure to handle peak emergency loads.
• Fuel Hygiene: Choose tanks that can accommodate on-site fuel polishing units, which remove water and microbial growth before it reaches the engine by cycling all stored fuel. 
• Maintenance Access: Select bulk tanks with simplified access manways, enabling technicians to field routine inspections and cleaning needed for site compliance.

For data center construction, we recommend our large-scale stationary fuel tank, the TransTank Pro (3,223 to 18,175 US gallons). This modular tank system provides a small footprint for its volume, making it the perfect foundation for modern data center fuel farms.

How Do Smaller Tanks Provide Data Center Redundancy?

In addition to stationary tanks, smaller, transportable tanks provide an agile backup to any sophisticated standby solution. This provides both scalability and redundancy to support a facility’s primary line of defense. 

Here’s how deploying smaller, mobile tanks fortifies your entire site: 

• Rapid Flexibility: Increase your ecosystem’s resiliency with tanks like the Western Global TransCube, which can be easily craned or forklifted into tightly confined spaces. 
• Buffered Margins: Stay operational even during regular maintenance by deploying smaller tanks when primary tanks go offline. 
• Dedicated Fuel Lines: Isolate specific critical cooling pumps or auxiliary systems by pairing fuel tanks to independent fuel lines.

Another small tank solution recommended for Data Centers is the TransCube (up to 2,388 US gallons) – The gold standard in transportable tanks, built to fuel up to three large diesel engines simultaneously.

Securing Standby Power for Operational Data Centers

Guaranteeing uptime for an operational data center promotes fuel storage to a strategic necessity. By building a tailored configuration of high-capacity stationary tanks with agile, redundant smaller ones, managers can fortify their facilities with airtight ecosystems that can outlast any outage. 

Ready to protect your data center? Contact our Western Global infrastructure experts today to design a tailored, turnkey fuel solution for your facility.