Estonian energy infrastructure and grid power system provider Skeleton Technologies has launched a new UPS designed for AI data centers.

Dubbed GrapheneUPS, the system is designed to deliver continuous power protection for data center operators while complying with data center grid connection requirements.

According to the company, unlike traditional UPS systems, its GrapheneUPS’s double-conversion system continuously converts incoming AC power to DC and back to AC, isolating critical AI equipment from utility disturbances. In addition, the company claims that its UPS can actively stabilize grid power by mitigating fluctuations during events such as voltage dips, interruptions, and grid restoration, thereby maintaining compliance with grid requirements without the need for additional stabilization equipment.

“As grids become increasingly volatile and prone to disturbances, Skeleton’s approach is to support grid infrastructure and to ensure that data center operations remain stable and protected through interruptions. GrapheneUPS acts as a resilience layer that secures continuous operation during grid incidents, shielding critical AI workloads from instability,” said Tero Järveläinen, chief product officer at Skeleton Technologies.

Skeleton argues that the new UPS could have a significant impact on data center efficiency. The company claims the system enables a 40 percent increase in computing power and a grid connection that can be up to 44 percent smaller. By stabilizing short-duration disturbances and managing rapid load fluctuations, the company says the system can help reduce the risk of downtime, protect sensitive equipment, and optimize power delivery for increasingly dynamic AI workloads.

Skeleton contends that the system is flexible in its deployment, able to be deployed in data center white space, gray space, or outside the facility as a containerized solution. In addition, the system is designed to operate as a load-proximate no-break layer near critical equipment, complementing site-level battery energy storage systems optimized for longer-duration campus energy reserve and energy shifting.

Skeleton was launched in 2009 in Tartu, Estonia. Its first customer was the European Space Agency and has seen uptake across the German automotive sector, with use in BMW’s i7 and M-series models.

In addition to its UPS system, the company is also a developer of graphene-based supercapacitors for the utility and AI data center markets. Skeleton’s system is a high-power energy-storage device designed to handle sharp load fluctuations in grids and AI data centers in under a millisecond. The company claims that its systems enable AI data centers to smooth power demand and reduce energy consumption.

It opened its first US manufacturing facility in Houston, Texas, earlier this year, following on from two European factories that launched in November 2025 – a $270 million facility in Germany and a $60m plant in Finland.

Last month, reports surfaced that the company had raised €33 million ($39m) ahead of a planned US IPO next year.