Skeleton

High power energy storage solutions

Skeleton logo
201-500 employees
  • B2B
  • Energy
  • Sustainability
  • Manufacturing
Ülemiste, Tallinn, Harju County

Company mission

To deliver energy storage solutions that not only meet today's needs but also build a sustainable future for generations to come.

21% employee growth in 12 months

Our take

As the world transitions away from polluting fuel sources to renewable energy, we all face a problem with storage. The production of batteries to store electricity generated by solar, tidal and geothermal power is almost as polluting as burning coal, putting the progress of electrification at risk.

Skeleton Technologies, a manufacturer of high-energy and high-density ultracapacitors, exists to provide a solution to this problem. Pioneering the use of curved graphene in battery technology, it has developed batteries for industrial use which can be charged in seconds and which will last for over a million charge cycles. They also have a higher efficiency than existing batteries, which has led to the technology being adopted in over 10,000 installations across the automotive, industrial and renewable energy sectors.

Skeleton has raised an impressive amount of funding, which is being used to develop its state-of-the-art superconductor factory in Germany, which began operations in 2024. It has also acquired a production facility in Finland, further increasing its manufacturing capacity and driving its R&D efforts. With the uptake of green electric grids only accelerating, Skeleton is in an excellent position to further extend its lead in this space.

Kirsty headshot

Kirsty

Company Specialist at Welcome to the Jungle

Benefits

  • Grow with Industry Leaders: Get mentorship and insights from professionals shaping the future of clean tech
  • Take Care of Your Health: Stay healthy with regular check-ups, health insurance, or monthly sports benefits—your wellbeing matters to us
  • Celebrate your birthday with a free day: You get an additional day off on your birthday, but of course we also celebrate in the office with all Skeletonians
  • Join the Skeleton rock band or one of many sports clubs: Gigs at company parties, ice swimming in the heart of winter, or beach volley when the suns out
  • Work hard, celebrate harder: Christmas Parties, Skeleton Birthday - we know how to throw an epic shindig

Funding (last 2 of 13 rounds)

Oct 2023

$63.1m

SERIES E

Jan 2022

$44m

SERIES D

Total funding: $308m

Leadership

Taavi Madiberk

(Co-Founder & CEO)

Alongside Skeleton, they are the co-founder and Non Executive Chair of Frankenburg Technologies and Owner of OÜ Venture22.

Oliver Ahlberg

(Co-Founder & Chairman)

Co-founder and CEO of thesheet as well as a Member of the Supervisory Board at GScan.