Skeleton Technologies

Defence · Tallinn, Estonia · Founded 2009

High-power energy storage systems for AI data centers MoreLess

Skeleton Technologies is a developer and manufacturer of high-power energy storage systems built on proprietary Curved Graphene supercapacitor technology. Its products absorb rapid power swings, manage transient power spikes and support peak shaving, serving AI data centers, power grids, mobility, aerospace and defense. The company supplies white-space power systems for AI data centers, with manufacturing and R&D in Germany and Finland. Founded in 2009 and headquartered in Tallinn, Estonia, it employs around 240 people and is backed by investors including Siemens, Marubeni and Axon Partners Group. In October 2026 an investment led by Siemens valued the company above USD 1 billion.

Keywords: Supercapacitors, AI Infrastructure, Data Centers, Energy Storage, Curved Graphene, Power Systems, Grid Power.

Valuation $1–2.5B

Revenue $1–10M

Headcount 100–500

Total funding $100–500M

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Talent graph

Skeleton Technologies's talent

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Team profiled 27 named & role-tagged

Founders /100 quality score

Key operators 4 quality /100

Potential founders likely future founders

Startup mafia alumni-founded startups

Talent movements in · out past 12 months

Source: Dealroom Talent Intelligence.

Investors

21 investors on Skeleton Technologies's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 4 investors entered at this stage

European Innovation Council

Free State of Saxony

German Federal Ministry for Economic Affairs and Climate Action

ELY Centre

Series A 4 investors entered at this stage

EstVCA

UP Invest

Harju Elekter

InnoEnergy

Series B+ 13 investors entered at this stage

Firstfloor Capital

European Investment Bank

Marubeni

MM Grupp

Skaala

Nidoco group

Bengt Wahlqvist

Taavet Hinrikus

Siemens

Siena Secondary Fund

SmartCap

Taiwania Capital

Axon Partners Group

Global footprint

Where Skeleton Technologies has talent and traffic

Workforce by country

9 countries with
team presence

🇩🇪 Germany42.6%

🇪🇪 Estonia32.2%

🇫🇮 Finland16.9%

🇫🇷 France2.7%

🇵🇱 Poland2.2%

Top 5 of 9 shown

Market sentiment

What the market is saying about Skeleton Technologies

An AI-synthesized read of the highest-engagement posts about Skeleton Technologies on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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