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Skeleton Technologies

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High-power energy storage systems for AI data centers

Tallinn, EstoniaFounded 2009Defence

Valuation $1–2.5B Last recorded · 2026

Revenue $1–10M Latest reported FY

Headcount 100–500 Current team size

Total funding $100–500M Disclosed equity funding

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About Skeleton Technologies

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.

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At a glance

Status: Operational
Founded: 2009
Headquarters: Tallinn, Estonia
Employees: 244
Open positions: 23
Dealroom signal: 68.9/100
Sub-industry: Energy Storage, Vehicle Production
Sector: Defence, Automotive, Battery, Sustainable Development Goals, Aviation and Aerospace, EIC, Industrial Technology, EV Battery Other Chemistry, EV Battery
Technology: Artificial Intelligence, Deep Tech
Business model: Manufacturing
Client focus: b2b
Links: Website LinkedIn X

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Funding history

10 recorded events

Company financing events and reported valuations.

Deal type	Date	Amount	Valuation	Investors	Source
LATE VCOther financing	May 2026	$36M	$297M	SmartCap · Taiwania Capital · Axon Partners Group	↗
GRANTOther financing	Aug 2025	$7.7M	—	ELY Centre	↗

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Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

Year	Revenue	Growth
2026
2025
2024
2023
2022
2021
2020		—

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Growth signals

Skeleton Technologies website traffic

Latest recorded traffic for Skeleton Technologies is 37K monthly website visits, down 7.5% over the last three months. Skeleton Technologies's team declined 2.4% over the past year.

Latest monthly visits37K 3-month web change-7.5% 1-year team growth-2.4%

Monthly website visitsNov 2019–Jul 2026

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Open positions

Openings linked to this company in Dealroom

Head of IT (m/f/x)Leipzig, Germany, Western Europe, Europe · Other · Aug 28, 2026 Office Assistant (m/f/x)Leipzig, Germany, Western Europe, Europe · Other · Aug 21, 2026 Werkstudent Production Controlling (m/w/x)Markranstädt, Germany, Western Europe, Europe · Other · Aug 5, 2026 Senior Accountant, Finnish Entity (OY) (m/f/x)Varkaus, North Savo, Finland · Accounting · Aug 5, 2026 Mechatroniker (m/w/d) in der InstandhaltungMarkranstädt, Germany, Western Europe, Europe · Finance · Jul 31, 2026 Elektriker (m/w/d) in der InstandhaltungMarkranstädt, Saxony, Germany · Other · Jul 30, 2026 Automation Engineer (m/f/x)Markranstädt, Saxony, Germany · Other · Jul 22, 2026 Cell Assembly Process Engineer (m/f/x)Helsinki, Finland, Northern Europe, Europe · Other · Jul 10, 2026

8 distinct openings shownExplore hiring signals →

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