29/09, Startup Exhibition, Cluster „Energy", ST4
Key Facts
Company Description
21energy turns Bitcoin-mining waste heat into revenue-positive and low-carbon heating. We sell space heaters and mobile containers that monetize surplus power and deliver demand response. Hardware + SaaS yield recurring margins; capex-light, modular, fast-scaling with solid unit economics. Plug-and-play, remotely monitored.
Product/Service Description
Plug-and-play Bitcoin heaters and mobile mining containers turn waste ASIC heat and surplus power into low-carbon warmth, demand-response capacity and a digital commodity (bitcoin).
Website
https://21energy.com/
Crunchbase
Country
Austria
Founding Year
2022
Employees
21-50
Company Stage
Many Paying Customers
Business Model
B2C
Focus Industries
Active Markets
(5 most relevant ones)
Austria, Germany, Switzerland, France, Norway
Look for at Bits & Pretzels
Funding & Investors
3 Lead Investors
Capital Raised to Date
1 120 000 €
Last Funding Type
Seed
Last Funding Date
June 2024
Capital Need (€)
5-15M
Currently Fundraising
(at the time of Bits & Pretzels 2025)
Yes
Growth Outlook
Traction
5000+ orders fulfilled, € 2M revenue in 2024, 32 months in business, 25 employess hired
Monetization Model
hardware sale & rent (recurring), B2B heating-as-service fees, grid-balancing contracts.
3 Reference Customers
mostly B2C