What 3U HOLDING AG does

3U HOLDING AG is a publicly listed German investment holding company (ISIN DE0005167902, ticker UUU on XETRA/Tradegate, Prime Standard on Frankfurt) founded in 1997 and headquartered in Marburg, Hesse. The company acquires, operates, and divests subsidiaries across three reporting segments: ICT (Information and Telecommunications Technology), Renewable Energies, and HVAC (Sanitary, Heating, and Air Conditioning). The ICT segment delivers Managed Services, cybersecurity, and a newly created AI-focused entity to German small and medium-sized businesses. The Renewable Energies segment owns and operates wind farms and solar parks, with 73 MW of group-wide installed capacity following the completion of the EUR 70 million Langendorf repowering in early 2026, plus the approved Breite Eiche project (13.6 MW) targeting commissioning in late 2027 to early 2028. The HVAC segment combines a B2C e-commerce platform (selfio.de) with B2B and wholesale distribution through the integrated EMPUR Group, supported by 13 locations across Germany and a 205 FTE workforce. A distinctive element is the company's strategic Bitcoin treasury, holding 427.1 BTC as of December 2025 at an average acquisition cost of EUR 75,259 per BTC.

The company's revenue model is segment-specific and contract-based: renewable energy revenue is generated via regulated feed-in tariffs and power purchase agreements secured through Bundesnetzagentur tenders; ICT revenue is largely recurring Managed Services contracts with SMBs; and HVAC revenue flows through retail e-commerce, trade-professional B2B sales, and wholesale channels. FY2025 consolidated revenue was EUR 53.0 million (HVAC EUR 36.2 million, ICT EUR 13.2 million, Renewable Energies EUR 4.6 million), with FY2024 revenue at EUR 55.7 million. EBITDA margins differ sharply by segment: Renewable Energies 63.3%, ICT 21.1%, reflecting the capital-intensive but high-margin profile of regulated energy assets versus service-based ICT and competitive HVAC distribution.

The company is controlled by a Management Board (CFO Christoph Hellrung covering Finance and Renewable Energies, Uwe Knoke for Strategy and Business Development, Andreas Odenbreit for Personnel and Legal) under the chairmanship of Ralf Thoenes on the Supervisory Board, with Thomas Fritsche as Head of Investor Relations and Press Spokesman. Following the 2023 EUR 7.9 million share buyback, the company holds approximately 8.82% of share capital in treasury, and a potential future IPO of subsidiary Selfio is under consideration. FY2025 produced negative EBITDA of EUR -3.7 million and a net loss of EUR -8.9 million, driven by investment cycle costs and HVAC restructuring, but management guides FY2026 to revenue of EUR 55-60 million and EBITDA of EUR 6-8 million as Langendorf contributes a full year of operations.

Name

3U HOLDING AG

Legal name

3U HOLDING AG

Website

https://3u.net

Company type

Public

Founded year

1997

Operating status

Operating

Headcount range

51–100 employees

Short description

3U HOLDING AG is a publicly listed German investment holding company operating across ICT Managed Services for SMBs, renewable energy generation (73 MW wind and solar capacity), and HVAC distribution including the selfio.de e-commerce platform and EMPUR Group wholesale, headquartered in Marburg.

Ownership category

akta.pro rank

Headquarters

HQ city

Marburg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. ICT Segment: Information and Telecommunications Technology segment providing Managed Services, cybersecurity solutions, and digitalization products. Revenue FY2025: EUR 13.2 million. Managed Services grew 3.0% to EUR 5.4 million. Segment EBITDA margin 21.1%.
2. Renewable Energies Segment: Operation of owned wind farms and solar parks generating electricity sold under feed-in tariffs and power purchase agreements. Revenue FY2025: EUR 4.6 million. EBITDA margin 63.3%. Total generation 45.3 GWh in 2025. Group-wide capacity 73 MW.
3. HVAC Segment (E-Commerce and Wholesale): HVAC segment combining e-commerce operations (selfio.de online shop) and wholesale distribution. Revenue FY2025: EUR 36.2 million (up 11.3% due to EMPUR acquisition). Three-tier sales model: B2C (selfio.de), B2B, and wholesale.
4. Holding Company Operations: Investment holding company managing portfolio of subsidiaries. Revenue from management fees and intercompany services. FY2025 revenue EUR 2.0-2.5 million expected.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

3U HOLDING AG is a publicly listed investment holding company that acquires, operates, and divests subsidiaries across three segments: ICT (Managed Services, cybersecurity, and AI-driven digitalization for SMBs), Renewable Energies (ownership and operation of wind farms and solar parks selling electricity via feed-in tariffs and PPAs), and HVAC (B2C e-commerce via selfio.de plus B2B and wholesale distribution through the EMPUR Group). The company also maintains a strategic 427.1 BTC digital treasury reserve.

Product overview

3U HOLDING AG is a listed investment holding company (ISIN DE0005167902) founded in 1997, headquartered in Marburg, Germany. It acquires, operates, and divests companies across three segments: ICT (Information and Telecommunications Technology), Renewable Energies, and HVAC (Sanitary, Heating, Ventilation and Air Conditioning). The company operates a multi-brand portfolio including the selfio.de e-commerce platform for home technology products (acquired brand), owned renewable energy assets (wind farms and solar parks), the ICT Managed Services business, and the HVAC wholesale distribution business through the EMPUR Group. A distinctive treasury strategy holds 427.1 BTC as a digital value reserve. The segments share exposure to megatrends: digitalization in SMBs, renewable energy expansion, and e-commerce in home technology.

Differentiator

Problem solved

Functional benefit

Brands

• selfio.de: Online trading portal for home technology products (bathroom, heating, renewable energy DIY products)
• EMPUR Group
• 3U ENERGY PE

Products and services

• selfio.de E-Commerce Platform Online trading portal operated by Selfio GmbH offering sanitary, heating, ventilation, and air conditioning products alongside energy-saving innovations and customer advisory services, targeting DIY homeowners and renovation consumers in Germany.
• ICT Managed Services and Cybersecurity Recurring managed IT services, cybersecurity solutions, and AI-powered process automation delivered to small and medium-sized businesses in Germany; segment revenue EUR 13.2m in FY2025 with 21.1% EBITDA margin.
• Renewable Energy Generation (Wind and Solar) Ownership and operation of wind farms and solar parks (73 MW total installed capacity) generating renewable electricity sold to grid operators under Bundesnetzagentur feed-in tariffs and power purchase agreements; segment revenue EUR 4.6m in FY2025 with 63.3% EBITDA margin.
• HVAC Wholesale and Distribution (EMPUR Group) Wholesale, B2B, and B2C distribution of sanitary, heating, and air conditioning products operated through the EMPUR Group with a three-tier sales model targeting trade professionals, installers, and end consumers; segment revenue EUR 36.2m in FY2025.

Quantifiable outcome

• 63.3% EBITDA margin in Renewable Energies segment (FY2025)
• +5 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• NordexcoreTechnology or Integration · 25 June 2026Nordex selected as turbine supplier for Breite Eiche wind park project in North Rhine-Westphalia. Two Nordex turbines with combined capacity of 13.6 MW planned for construction, targeting commissioning by late 2027 to early 2028.
• GOLDBECK Südwest GmbHcoreImplementation/ SI/ Consulting Partner · 1 January 2025GOLDBECK Südwest GmbH served as architect and general contractor for the new headquarters building in Marburg. GOLDBECK GmbH representative Izabela Bürkner acted as DGNB auditor for the certified sustainable building.
• Vestas (Vesta V162 turbines)coreTechnology or Integration · 1 January 2024Vestas selected as turbine manufacturer for Langendorf wind farm repowering project. Five Vesta V162 turbines with 6.2 MW nominal output each, hub height of 169 meters and rotor diameter of 162 meters, successfully commissioned.

Scale indicators12 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Kontron AG: European IT services and managed services group (renamed from S&T AG). Comparable to 3U's ICT managed services and SMB digitalization business across DACH/Central Europe.
• Encavis AG: Hamburg-listed operator of onshore wind and solar parks across Europe. Directly comparable to 3U's renewable generation business, including the role of feed-in tariffs and EEG-driven cash flows.
• ABO Wind AG: German project developer for wind and solar farms. Comparable to 3U's wind development and repowering projects such as Langendorf and Breite Eiche.
• CANCOM SE: DACH-focused managed services and cloud provider for mid-market companies. Closely comparable to 3U's ITC segment in SMB IT outsourcing and digitalization offerings.
• DATAGROUP SE: German managed IT services provider focused on SMB and mid-market enterprise customers. Comparable to 3U's ICT managed services delivery model, recurring revenue profile, and DACH customer base.
• Energiekontor AG: German wind and solar project developer and operator with European footprint. Comparable to 3U's Renewable Energies segment in wind farm ownership, project development and feed-in-tariff-based revenue model.
• Indus Holding AG: German Mittelstand industrial holding acquiring, operating and developing SMEs in niche industrial markets. Highly comparable to 3U's multi-segment holding model and small-cap listed holding strategy.
• Westwing Group SE: German-headquartered e-commerce player focused on home and living. Comparable to 3U's B2C e-commerce operations via selfio.de in the home technology vertical.
• Bechtle AG: Germany's largest IT system house, focused on managed services and IT infrastructure for mid-market customers. Comparable to 3U's ICT segment targeting SMB digitalization, managed services, and cybersecurity.

Broad incumbents

• Nordex SE: Global wind turbine manufacturer and a key supplier to 3U (Breite Eiche project). Relevant as an incumbent in the same wind energy value chain where 3U is a developer/operator.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/3uHolding
• YouTubeyoutube.com/channel/UC8hRujvoZLHTQs_ZD5i17nA
• LinkedInlinkedin.com/company/3u-holding

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments1 record

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 3U HOLDING AG