Skeleton Technologies has introduced GrapheneUPS, a high‑density double‑conversion UPS system designed for AI and GPU‑heavy data centers that need continuous power protection while complying with increasingly stringent grid connection codes. The system combines load‑proximate backup with active grid‑stabilizing functions and is based on Skeleton’s inherently safe, fast‑cycling graphene‑enhanced supercapacitor storage, making it an interesting case study for engineers working with high‑power supercapacitor and SuperBattery‑class solutions in modern UPS architectures.
GrapheneUPS uses a continuous AC‑DC‑AC double‑conversion topology that isolates sensitive AI computing equipment from grid disturbances such as voltage dips, short interruptions and fluctuations during grid restoration, while also helping data centers meet evolving grid connection and grid code requirements without separate stabilization equipment at the point of connection. According to Skeleton, the system can enable up to 40% more computing power while requiring up to 44% less grid connection capacity, and delivers roughly 50% lower volume for the same performance compared to conventional UPS systems, supporting deployment in white space, gray space or as a containerized outdoor solution.
The storage layer in GrapheneUPS is optimized for short‑duration, high‑power backup and power smoothing and builds on Skeleton’s graphene‑based supercapacitor and SuperBattery technologies, which offer high power density, very high cycle life and fast response. By relying on an inherently safe supercapacitor‑based concept aimed at mitigating lithium‑ion risks such as thermal runaway, GrapheneUPS can simplify fire safety concepts and, in some cases, reduce cooling and containment complexity compared to large lithium‑ion battery racks.
From a system architecture perspective, GrapheneUPS connects as an AC‑side “sidecar” to standard three‑phase low‑voltage distribution and then supplies stabilized DC power to the IT racks, aligning with emerging high‑voltage data center roadmaps and support for multiple DC voltage levels. It is clearly targeted at high‑power computing environments such as AI and GPU‑heavy data centers, HPC clusters and facilities on weak or volatile grids, and is intended to act as a load‑proximate, no‑break layer that complements longer‑duration campus‑level battery energy storage used for reserve and energy shifting.
For power‑electronics and passive‑component designers, GrapheneUPS highlights trends such as increased use of high‑power DC‑bus capacitors for GPU racks, strong emphasis on EMI and harmonic control with multi‑stage filters, and hybrid protection concepts that combine fast solid‑state control with passive surge and fault‑handling elements at high DC voltages. In this context, Skeleton’s graphene‑based supercapacitors play a central role as a high‑power energy buffer for rapid load steps and grid events, leveraging extreme cycle life, fast recharge and safety‑driven design to protect highly dynamic AI workloads while supporting grid stability.
