Skeleton Technologies –
global leader in

Trusted by leading investors in the industry

We have invested over 60 million euros to build up manufacturing capacity and are backed by leading investors including InnoEnergy and the European Investment Bank. We employ more than 120 people in Germany and Estonia, and our management includes serial entrepreneurs and highly skilled leaders with experience from a multitude of industries from both the public and private sectors, including automotive, public transportation, production, financial management, and of course, energy storage.

ST investors about

Largest ultracapacitor manufacturer in Europe

Skeleton Technologies is the only full value-chain manufacturer in the market. Starting from ”curved graphene”, the basis for the competitive advantage our SkelCap cells possess, to industrial ultracapacitor modules and full energy storage systems, we are the only manufacturer that can offer such a variety of products possessing the same competitive advantage throughout the whole product catalog.

We are increasing our production capacity to over 3 million cells a year to meet the growing demand from industries such as automotive, transportation, maritime, intralogistics, grid, and renewable energy.


Our Competitive Advantage


Lower internal resistance and 4x higher power density achieved through cost-efficient product design.

Our proprietary raw material, “curved graphene”, provides our ultracapacitors with an unparalleled advantage in power and energy density.

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Competitive Advantage Use Case:
Wrightbus Double Decker

The integration of graphene-based ultracapacitors into test WrightBus double deck buses enables a 36% fuel saving compared to a UK based Euro VI diesel bus baseline. It also adds at least another 13 passengers to the capacity of these buses compared to a lithium battery-based hybrid equivalent.

Urban Delivery Truck Use Case

Kinetic Energy Recovery System for heavy transportation can reduce fuel consumption by up to 32% for urban delivery trucks. The system takes advantage of the high power density and almost instant charging and discharging of ultracapacitors by harnessing braking energy and using it for acceleration. Read more...



Port Crane Use Case

Leading container terminals in the Baltic Region with an annual capacity of 600 000 TEU, unveil a Rubber Tyre Gantry (RTG) crane equipped with a graphene ultracapacitors powered kinetic energy recovery system (KERS) reducing the fuel consumption and CO2 emissions by 34%. Read more...


Skeleton Technologies - we help to save energy.