aid: skeleton-technologies
name: Skeleton Technologies
description: >-
  Skeleton Technologies is an Estonian-German energy storage manufacturer, founded in Tartu,
  Estonia in 2009 by Oliver Ahlberg and Taavi Madiberk, that designs and builds high-power
  supercapacitor and SuperBattery systems on its patented Curved Graphene material. Its product
  line spans SkelCap ultracapacitor cells, supercapacitor modules, and the GrapheneUPS,
  GrapheneGPU and GrapheneBBU power systems aimed at AI data centers, grid stability, defense,
  automotive, heavy transportation and industrial customers. The company has raised close to
  EUR 400 million, counts Marubeni and Siemens among its backers, and manufactures at its
  ISO 9001 / ISO 14001 certified Leipzig Superfactory in Germany, a Varkaus facility in Finland
  and a Curved Graphene plant in Bitterfeld-Wolfen. Skeleton sells physical power hardware; it
  operates no public developer program, API, SDK or machine-readable contract.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
image: https://www.skeletontech.com/hubfs/skeleton-technologies-1.jpg
url: https://raw.githubusercontent.com/api-evangelist/skeleton-technologies/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.20'
created: '2026-08-28'
modified: '2026-08-28'
tags:
- Company
- Energy Storage
- Supercapacitors
- Ultracapacitors
- Graphene
- Manufacturing
- Data Centers
- Grid Stability
- Hardware
- Estonia
- Germany
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/skeleton-technologies-domain-security.yml
- type: Website
  url: https://www.skeletontech.com/
- type: About
  url: https://www.skeletontech.com/about
- type: Contact
  url: https://www.skeletontech.com/contact
- type: Blog
  url: https://www.skeletontech.com/skeleton-blog
- type: BlogRSS
  url: https://www.skeletontech.com/skeleton-blog/rss.xml
- type: PrivacyPolicy
  url: https://www.skeletontech.com/privacy-policy
- type: Products
  url: https://www.skeletontech.com/all-products
- type: Downloads
  url: https://www.skeletontech.com/downloads
- type: Press
  url: https://www.skeletontech.com/press
- type: Careers
  url: https://www.skeletontech.com/careers
- type: Investors
  url: https://www.skeletontech.com/investors
- type: SecondaryMarket
  url: https://www.hiive.com/securities/skeleton-technologies-stock
- type: LLMsTxt
  url: llms/skeleton-technologies-llms.txt
x-enrichment:
  date: '2026-08-28'
  status: minimal
  artifacts_added: 3
  pass: local-v1
x-coverage:
  state: none
  reason: not-a-software-company
  detail: >-
    Skeleton Technologies sells physical power hardware — supercapacitor cells, modules and
    Graphene UPS/BBU systems — and its only software is embedded management firmware inside the
    units; www.skeletontech.com is a HubSpot marketing site with no developer section, and the
    api./developer./docs. subdomains do not resolve in DNS.
  evidence:
    - url: https://www.skeletontech.com/openapi.json
      status: 404
    - url: https://www.skeletontech.com/llms.txt
      status: 404
    - url: https://www.skeletontech.com/.well-known/agent-card.json
      status: 404
    - url: https://api.skeletontech.com/
      status: 0
  checked: '2026-08-28'