Who makes power smoothing for AI data centers
Power smoothing / supercapacitors (GPU load-swing mitigation)
Supercapacitor-based and firmware-coordinated systems that absorb the fast, large power swings synchronized GPU training and inference jobs create, protecting upstream electrical equipment and the grid from those transients.
A large training job running across many GPUs can start, checkpoint, or pause in near-unison, producing power swings sharp enough to stress voltage regulation on the equipment upstream — UPS (7.10), switchgear (7.05), and potentially the grid interconnection itself. Supercapacitors respond on a timescale that battery chemistry cannot match, discharging and absorbing energy fast enough to flatten these transients before they propagate further up the distribution chain, typically working alongside rather than instead of the UPS in 7.10. This is complemented by firmware-side smoothing built into the GPUs and cluster management software themselves, which can stagger workload transitions or throttle power draw to reduce the swing at the source rather than only absorbing it downstream. Because this is a problem largely specific to large, synchronized AI training clusters rather than conventional enterprise IT load, it is a newer product category with a small number of suppliers and no long incumbency to displace, and utilities are increasingly interested in it as a way to let data centers connect to the grid without the swings they would otherwise cause. For investors, this is a young, fast-evolving niche: watch which supercapacitor and power-electronics suppliers get qualified into major GPU cluster reference designs, and how much of the smoothing job software and firmware end up doing instead, which would reduce the addressable hardware market.
AI delta: Synchronized GPU clusters can swing power draw by a large share of full load almost instantaneously as a training job pauses, checkpoints, or resumes, a response speed that batteries and generators alone are not built for.
plus firmware-side smoothing from Nvidia and Microsoft.
Companies on this part (5)
| Company | Role | Ownership | Ticker | Price | 1d | Confidence | Note |
|---|---|---|---|---|---|---|---|
| Delta Electronics | manufacturer | public | 2308.TW | 1560 TWD | -3.4% | inferred | |
| Eaton | manufacturer | public | ETN | 366 USD | -1.7% | inferred | |
| Vertiv | manufacturer | public | VRT | 194 USD | -0.2% | inferred | |
| Skeleton Technologies | manufacturer | private | disclosed | · source | |||
| UCAP Power | manufacturer | private | inferred |
Who competes here
The same table read the other way: every company above competes for power smoothing / supercapacitors sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.
Nearby parts
- Previous in layer: Energy storage: UPS batteries & BESS
- Next in layer: Backup generation: gensets, fuel systems, HVO
- Layer: Layer 7 — Electrical: power distribution (grid to rack)
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Latest feed
- Sponsored: Rethinking power infrastructure to scale AI data centers — Data Center Dynamics, 2026-10-23ABB suggests that rethinking data center power infrastructure could solve scaling challenges in the AI industry.
- Tata Power eyes 2.8GW of generation, transmission, and distribution for Indian data center sector — Data Center Dynamics, 2026-10-21Tata Power plans to secure significant generation, transmission, and distribution capacity for the burgeoning Indian data center industry.
- Sponsored: Building a battery ecosystem for AI data centers — Data Center Dynamics, 2026-10-20The future power stability for AI data centers is projected to rely on advanced energy storage and intelligent DC infrastructure.
- Utilities can use AI to solve grid backlogs: AWS energy lead — Utility Dive, 2026-10-15AWS is exploring the use of AI to assist utilities in managing and solving issues related to grid backlogs.
- Amperesand Aims to Smooth AI Data Center Power Spikes — EE Times, 2026-10-13Amperesand is developing power smoothing technology to mitigate load swings caused by AI workloads in data centers.
- Number of data center fires and power failures has doubled since 2024 — Data Center Dynamics, 2026-10-12Data from the Energy Incident Register shows a significant increase in fire and power failure incidents related to power infrastructure since 2024.
- Sponsored: Why do liquid-cooled AI data centers require different backup power strategy? — Data Center Dynamics, 2026-10-10The article discusses how the high power density and rapid load fluctuations of liquid-cooled AI data centers necessitate specialized backup power strategies and hardware.
- Engineering Reliability: Power Architectures for High-Performance Burn-In — EE Times, 2026-10-07The report discusses the engineering requirements for power architecture and reliability during high-performance stress testing and burn-in for data center hardware.
- 800 VDC architecture for AI infrastructure — Data Center Dynamics, 2026-09-24The transition to 800 VDC power architectures is beneficial for improving AI data center efficiency, energy storage, and power distribution.
- FERC rejects ComEd’s cancellation of PowerHouse Hillwood data center contract — Utility Dive, 2026-09-23FERC scrutinized a low letter of credit provided for a large planned 1.8-GW data center contract by PowerHouse Hillwood.
Questions about power smoothing / supercapacitors
- What are power smoothing / supercapacitors?
- Supercapacitor-based and firmware-coordinated systems that absorb the fast, large power swings synchronized GPU training and inference jobs create, protecting upstream electrical equipment and the grid from those transients.
- Which companies make power smoothing for AI data centers?
- This catalog lists 5 companies on Power smoothing / supercapacitors, 3 of them with listed equity: Delta Electronics, Eaton, Vertiv, Skeleton Technologies, UCAP Power.
- How does AI change demand for power smoothing / supercapacitors?
- Synchronized GPU clusters can swing power draw by a large share of full load almost instantaneously as a training job pauses, checkpoints, or resumes, a response speed that batteries and generators alone are not built for.
- How reliable are these power smoothing / supercapacitors supplier placements?
- The 5 placements on this part break down as 1 disclosed, 4 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.
Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON