An AI infrastructure plan needs more than a supply agreement for accelerators. It must establish how the facility receives power, what it does during a disturbance and which equipment can support its intended operating profile.
Power is not the only possible constraint: compute hardware, networking, cooling, construction and financing can each govern a project's schedule. The procurement mistake is treating electrical infrastructure as something that can be finalized after the computing architecture is fixed.
For data center developers and equipment buyers, the useful conversation connects three questions: when can the site energize, how much usable power will it have, and how will the complete facility behave when conditions change?
Key Takeaways
- Data center electricity demand is growing, but global demand forecasts do not establish an individual site's load.
- NERC documented approximately 1,500 MW of customer-initiated load loss during a July 2024 transmission-fault event involving repeated voltage disturbances.
- The IEA's global data-center supply mix differs materially from the U.S. mix; use the correct geography and reporting year.
- Critical-infrastructure status is jurisdiction-specific. The UK designated data centers as critical national infrastructure in 2024.
- Size and source equipment from a documented project design, rather than a generic 100 MW campus assumption.
Start with the demand forecast—and identify its limits#
The DOE's December 2024 summary of Berkeley Lab research estimated U.S. data center electricity use at 176 TWh in 2023 and projected 325–580 TWh by 2028. Those figures include data centers broadly, rather than representing a measured AI-only load.
The IEA's Energy and AI report estimated global data center consumption at approximately 415 TWh in 2024 and projected around 945 TWh in 2030 in its base case. The forward figures are scenarios, not metered outcomes.
Such research supports early power planning. It does not tell a procurement team how many generators or transformers a specific facility needs. The missing steps are the project's IT-load schedule, cooling and auxiliary demand, availability objectives and operating stages.
Ask designers to distinguish energy from power. Annual TWh describes consumption over time. MW describes power at a specified point or condition. Neither should be converted into an equipment count without an operating profile and rating basis.
Grid behavior matters as much as backup capacity#
NERC's incident review describes a July 10, 2024 event in which a fault on a 230 kV transmission line and its reclosing sequence produced six successive faults over 82 seconds. Approximately 1,500 MW of voltage-sensitive load was lost through customer-initiated actions.
NERC reported that the system's frequency and voltage increased following the load reduction. Operators acted to return voltage to normal operating levels. The report does not describe a nationwide blackout or establish that all AI facilities behave the same way.
For buyers, the incident makes a practical point: a campus can protect its own equipment by transferring away from the grid while simultaneously creating a disturbance that grid operators must manage. The facility's controls, transfer logic and restart behavior therefore belong in the connection discussion.
A design review should ask:
- Which loads remain connected through specified voltage and frequency disturbances?
- What causes the UPS, drives, cooling plant or transfer equipment to change state?
- How does the facility behave during repeated disturbances rather than one isolated event?
- What is the largest simultaneous load reduction or restoration step?
- Which settings require coordination with the utility and equipment manufacturers?
- What models and test evidence will demonstrate the intended response?
These are system questions. More generator nameplate capacity does not, on its own, answer them.
Use the correct electricity-supply geography#
The IEA's global supply analysis identifies coal at approximately 30% of data center electricity supply in 2024, renewables at 27%, natural gas at 26% and nuclear at 15%. The rounded categories do not sum to exactly 100%.
The same analysis describes natural gas as supplying more than 40% of U.S. data center electricity. That U.S. share should not be relabeled as a global figure.
| Question | Appropriate evidence |
|---|---|
| What supplies data centers globally? | Global research with a stated year and methodology |
| What supplies a regional grid? | Regional generation and electricity-flow information |
| What electricity has a company contracted? | Its relevant supply agreements and accounting approach |
| What will keep this site operating during an outage? | The physical electrical system, operating controls and available energy or fuel |
A renewable procurement agreement and a physical backup system serve different purposes. A corporate annual energy claim does not establish the instantaneous fuel mix at a site or its ability to operate when the normal supply is lost.
For on-site gas generation, evaluate both fuel availability and environmental permission. A fuel contract does not establish an air permit, and an emissions specification does not establish firm fuel delivery.
Critical infrastructure: avoid a worldwide yes-or-no claim#
The UK government designated data centers as critical national infrastructure in September 2024. It is therefore inaccurate to say that no government has adopted such a designation.
The significance of a designation depends on the jurisdiction and the relevant policy or law. It should not be converted into a universal generator redundancy rule or a claim that data centers are regulated as electric utilities everywhere.
In the United States, a separate development is FERC's July 16, 2026 order concerning computational-load integration. FERC directed NERC to submit new or modified reliability standards and revisions to its Rules of Procedure, including registry criteria, by December 31, 2026.
That direction is not the same as declaring every data center immediately subject to a finalized new standard. Track the actual filing, approval, applicability and effective-date steps. NERC's Large Loads Action Plan provides a route into the relevant work.
Turn the project requirements into an equipment schedule#
Do not order a 100 MW electrical backbone simply because a market report describes campuses at that scale. Establish the load that must operate at each stage and the consequences of equipment being unavailable.
| System | Design input to establish before sourcing |
|---|---|
| Transformers | Capacity basis, voltage ratio, impedance, cooling, losses and site conditions |
| Switchgear | Voltage, continuous current, fault duty, protection, controls and maintenance arrangement |
| UPS | Supported kW and kVA, runtime, input behavior, recharge and redundancy |
| Transfer equipment | Source arrangements, transition sequence, neutral treatment and fault rating |
| Generation | Duty, net site output, fuel, emissions configuration and maintenance strategy |
| Storage | Required power, usable energy, recharge, controls and operating limits |
Use the transformer, switchgear and UPS catalogues to research equipment categories after these inputs are established. The selected machines must then be checked as parts of the complete design.
Redundancy requires similar precision. N+1 or another arrangement should refer to a defined subsystem and operating objective. It does not automatically prove that the entire facility remains available during every maintenance or failure condition.
Evaluate bridge power without assuming it bypasses the constraints#
Bridge generation can be worth investigating when the required operating date precedes an acceptable utility-service date. The evaluation must include fuel, permits, noise, site works, electrical integration, operating costs and commissioning.
An existing turbine may avoid some manufacturing time but still need inspection, repair or missing auxiliaries. A mobile package may simplify some installation work without eliminating the receiving site's obligations. A standby generator may not be suitable or permitted for the intended continuous operating duty.
Start with a defined net-power requirement and compare it with each proposed package's performance at the site. SecondWatt's gas turbine derating guide and used gas turbine cost guide address the rating and scope distinctions.
For a time-limited project, include removal and restoration costs and test different end-of-use assumptions. Resale is a possible outcome, not guaranteed capital recovery.
A practical review before procurement approval#
Bring electrical design, utility coordination and procurement into the same review. The objective is a documented decision, with unresolved items assigned to an owner.
First, confirm the load schedule and the date each operating block is required. Second, reconcile utility-service assumptions with written project correspondence. Third, identify equipment whose specification depends on unfinished studies. Finally, document which tests will establish that the delivered system performs as intended.
A supplier response should distinguish confirmed equipment from a sourcing possibility. Require configuration, condition, package scope and commercial terms before treating an offer as a schedule solution.
Frequently Asked Questions#
Is power replacing GPUs as the only AI bottleneck?#
No. Power can be a binding constraint, but compute supply, cooling, networking, construction and other dependencies remain project-specific. Plan the systems together.
Does natural gas supply 40% of global data center electricity?#
That is not the IEA global figure cited here. Its 2024 global estimate is approximately 26%; the share above 40% relates to the United States.
Are data centers already considered critical infrastructure?#
In some jurisdictions, yes. The UK designation dates to 2024. Determine the status and consequences for the actual jurisdiction rather than relying on a worldwide generalization.
Does a large generator fleet prove grid ride-through capability?#
No. Ride-through and transfer behavior depend on the complete electrical system and its settings. Review them with the utility and equipment manufacturers.
What information should a buyer send to SecondWatt?#
Provide the equipment schedule, location, duty, required dates and condition preferences. For generation, include the required net site output, fuel and electrical interface.
Explore the gas turbine catalogue, then request equipment sourcing against the approved project requirements. The useful starting point is a defined electrical need and a documented path to operation.