**Key takeaways

  • Fast‑response ultracapacitor storage lets Irish data centers stay on‑grid during faults.
  • Paducah’s AI campus couples gigawatt‑scale natural‑gas generation with a multi‑gigawatt battery buffer.
  • Florida’s regulated utility reports interest from AI customers for a mix of renewables, storage and gas‑fired capacity.
  • The Paducah project aggregates roughly $100 B of private capital, pairing compute, generation and storage under a single development timeline.
  • Ireland’s new grid code forces large loads to provide active support during disturbances.

Grid‑code pressure and ultracapacitor storage

Ireland’s system operator now requires qualifying large loads to stay connected when a fault occurs and to restore most of their demand within a fraction of a second. ABB’s MPID345 platform combines ultracapacitor banks with grid‑forming converters to meet that requirement without redesigning a data center’s existing power train.

During fault events, the aggregate load reduction that data centers can provide grew from 74 MW in early 2022 to 387 MW by mid‑2025. Data centers currently draw about a quarter of Ireland’s electricity, a share projected to reach roughly a third by 2032.

Natural‑gas baseload for a gigawatt‑scale campus

The Paducah AI and high‑performance‑computing campus plans a total electric capacity of 1.8 GW. To feed that load, the developers intend to install two gigawatts of natural‑gas‑fired generation on or near the former enrichment site. The gas plants are sized to provide firm, dispatchable power for the campus as it ramps.

Battery resources that bridge gas and renewables

Alongside the gas plants, the Paducah project includes up to 2.6 GW of battery storage. The batteries can discharge in seconds, smoothing short‑term ramps and delivering grid‑forming services when AI workloads spike.

In Florida, the regulated utility reports roughly 21 GW of interest from large‑load customers such as hyperscale AI data centers. Within that pipeline, the utility believes it could have about 12 GW ready for service as early as 2028. The utility’s existing portfolio already mixes natural‑gas, renewable and storage assets, which can be bundled into power‑purchase agreements for AI customers.

Comparative overview of power‑supply options

Power option Capacity reported Response characteristic Typical deployment
ABB ultracapacitor (MPID345) 387 MW load reduction observed during faults Restores 90 % of demand within 500 ms Meets Ireland’s grid‑code requirement
Paducah natural‑gas generation 2 GW firm baseload Continuous, dispatchable Core power for 1.8‑GW AI campus
Paducah battery storage 2.6 GW short‑term buffer Seconds‑scale discharge for ramp support Complements gas plant, provides ancillary services
Florida utility interest (FPL) 21 GW of projected large‑load demand; 12 GW potentially online 2028 Mix of intermittent renewables with fast‑response batteries Serves multiple AI hyperscalers

Outlook

The deployments described above show three complementary approaches that can be layered to satisfy AI data‑center power requirements:

  1. Millisecond‑scale storage (ultracapacitors) that enables facilities to stay connected during grid disturbances.
  2. On‑site or nearby firm generation (natural‑gas plants) that provides a stable baseload.
  3. Utility‑scale renewables paired with batteries that supply additional capacity while offering flexibility.

Each of these elements is being implemented in real projects with defined capacity, timeline and job creation metrics, providing concrete data for investors and engineers evaluating AI‑compute infrastructure.

Conclusion

Combining ultracapacitor storage, gigawatt‑scale gas generation and renewable‑plus‑storage contracts creates a pragmatic power stack for AI workloads. The numbers from Ireland, Paducah and Florida demonstrate that the approach is already funded, under construction and regulated, giving the industry a clear template for future compute build‑outs.

Sources

This article was researched and fact-checked against the following sources: