Zentrum für Energie, Bauen, Architektur und Umwelt

What Zentrum für Energie, Bauen, Architektur und Umwelt does

ZEBAU (Zentrum für Energie, Bauen, Architektur und Umwelt) is an independent, owner-managed consulting and planning firm headquartered in Hamburg, Germany, founded in 1999. It operates as a network hub for energy-efficient building, sustainable construction, and environmental policy in Northern Germany, organised across three business areas: Buildings (architectural and HVAC planning, energy consulting for single and multi-family buildings), Neighborhoods and Municipalities (municipal and housing-cooperative advisory, KfW and EU-funded project delivery, climate adaptation), and Communication and Education (the Hamburger Energielotsen citizen-training program, specialist conferences, publications). Its clients are predominantly public-sector and B2B-adjacent: the Hamburg Ministry for the Environment (BUKEA), the Handwerkskammer (craftsmen's chamber), Verbraucherzentrale (consumer advice centre), municipal administrations, housing cooperatives, and professional builders. The firm is a member of the Energie-Agenturen Deutschlands (eaD) federal network and an active participant in EU Interreg Baltic Sea Region and Europe-wide projects.

ZEBAU's revenue mechanics combine (i) project-based public-sector consulting fees from federal, state, and EU-funded programs, (ii) co-funded cross-border consortium work under Interreg, (iii) operational planning mandates for building owners and housing associations, and (iv) fee- and sponsor-based education products such as Energielotsen training and the Fachkonferenz Effiziente Gebäude. The firm is privately held by its managing directors (Peter-M. Friemert and Ann-Christin Rebbin) with no disclosed external shareholders; it operates through a parent GmbH and a non-profit gGmbH subsidiary that hosts grant-eligible projects. Pricing is contract-driven, with rates consistent with German engineering/energy consultancies and with public-procurement unit-price visibility on framework agreements.

Underlying technology is conventional professional-services delivery: building-physics simulation, energy-balance and HVAC planning tools, and standard project-management workflows. There is no evidence of proprietary platforms, software products, or AI/ML capabilities. Distribution relies on partner channels (HWK, Verbraucherzentrale), public procurement frameworks, and owned-event / conference channels, supported by an institutional reputation built over more than two decades of public-sector delivery.

Name

Zentrum für Energie, Bauen, Architektur und Umwelt

Legal name

ZEBAU – Zentrum für Energie, Bauen, Architektur und Umwelt GmbH

Website

https://zebau.de

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

ZEBAU is an independent Hamburg-based consultancy that advises Hamburg's BUKEA, municipalities, housing associations, and building professionals on energy-efficient construction, climate adaptation, and sustainable neighborhood planning, combining consulting, planning, and education programs.

Ownership category

akta.pro rank

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Public-Sector Consulting Projects: ZEBAU generates revenue through consulting engagements commissioned by German municipalities, districts (Bezirksämter), and public institutions. Projects include integrated climate protection concepts, municipal heat plans, neighborhood development concepts, and climate adaptation plans. These are typically funded through government programs (KfW, BUKEA, BMUV National Climate Protection Initiative) with ZEBAU serving as the contracted service provider.
2. EU Interreg and Horizon Europe Project Funding: ZEBAU participates as a project partner in European Union funded research and cooperation programs including Interreg Baltic Sea Region (Easy Energy, Energy Equilibrium, EnTRA, PV4All, LUCIA, GreenSAM, LowTEMP, I-HEROS) and Interreg Europe (MOLOC). Revenue comes as project funding allocations for specific work packages in cross-border climate, energy, and mobility initiatives.
3. Building Design and Technical Planning Services: ZEBAU provides architecture and technical building equipment planning (HOAI phases 1-8) for construction projects including energy concepts, HVAC design, and KfW/Baubegleitung. Private and institutional clients (housing cooperatives, property developers) commission these services for new builds and energetic modernization.
4. Education and Event Services: ZEBAU organizes and manages professional conferences (Fachkonferenz Effiziente Gebäude), training programs (Fernlehrgang Energieberatung, ZukunftswissenBau, How to Online-Seminare), expert circles, and information events. Some events are free (funded by public sponsors), while paid events (e.g., the Effiziente Gebäude conference) generate ticket revenue through the Tickettoaster platform.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels10 records

Core offering

ZEBAU is an independent network hub in Northern Germany that delivers consulting, planning, and training services in energy-efficient building, climate protection, and sustainable urban development. Its offerings span architectural and HVAC design (HOAI phases 1-8), building energy certification (Hamburger Energiepass, BAFA, KfW/Baubegleitung), integrated neighborhood concepts under the KfW 432 program, municipal heat and cold planning, climate adaptation concepts, and professional training through the Hamburger Energielotsen advice line, the annual Fachkonferenz Effiziente Gebäude, and the Fernlehrgang Energieberatung course.

Product overview

ZEBAU GmbH is an independent network organization in Northern Germany offering a comprehensive portfolio of consulting, planning, and education services across three business divisions: Buildings (Gebäude), Districts and Municipalities (Quartiere und Kommunen), and Communication and Education (Kommunikation und Bildung). The company provides architectural services, energy consulting, climate protection and adaptation planning, integral district development, international EU projects, and professional training programs. The service offering includes specialized consulting areas such as energetische Fachplanung, HLS planning, timber construction, solar energy, mobility, certification, and climate communication. Educational products include the Hamburger Energielotsen advisory program, distance learning courses, conferences (Fachkonferenz Effiziente Gebäude), and various online seminars and forums. The company operates primarily as a consulting firm rather than a software product company.

Differentiator

Problem solved

Functional benefit

Products and services

• Architektur (Architectural Planning)
• Energieberatung (Energy Consulting)
• Energetische Fachplanung und Baubegleitung (Energy Planning and Construction Supervision)
• Heizung-Lüftung-Sanitär-Planung (HVAC Planning)
• Holzbau und nachhaltige Baukonstruktion (Timber Construction)
• Integrale Quartiersentwicklung (Integrated Neighborhood Development)
• Internationale Projekte (International Projects)
• Klimaanpassung (Climate Adaptation Consulting)
• Klimakommunikation (Climate Communication)
• Kommunaler Klimaschutz (Municipal Climate Protection)
• Solarenergie (Solar Energy Consulting)
• Zertifizierung (Building Certification)
• Mobilität (Mobility Consulting)
• Hamburger Energielotsen (Hamburg Energy Pilots Program)
• Fernlehrgang Energieberatung für Wohngebäude – Quereinsteiger
• Fachkonferenz Effiziente Gebäude
• ZukunftswissenBau
• Hamburger Holzbauforum (Hamburg Timber Construction Forum)
• How to Online-Seminare
• Billstedt wohnt clever

Quantifiable outcome

• Over 150 energy efficiency measures implemented across 50 buildings in the Baltic Sea Region through the Easy Energy project
• +3 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature5 records

Partnerships

15 partnerships are on record, tiered core and minor.

• Schüco International KGcoreGTM or Marketing Partner · 4 May 2026Schüco served as the industrial partner and venue host for the Energie-Agenturen Deutschlands (eaD) annual meeting in Hamburg in May 2026, contributing perspective on circular economy and regulatory frameworks. The event at the Schüco Showroom in Hamburg's Hafencity brought together 25 energy agencies from 13 German states and featured a panel discussion on the municipal heat planning and the planned Hamburg One-Stop-Shop.
• Handwerkskammer HamburgcoreStrategic or Co-development PartnerHandwerkskammer Hamburg is a core partner in the Hamburger Energielotsen initiative alongside ZEBAU and Verbraucherzentrale Hamburg. The HWK conducts energy consultations and participates in expert circles and information events organized by ZEBAU, extending the reach of building energy advice across Hamburg's crafts sector.
• Verbraucherzentrale Hamburg e.V.coreStrategic or Co-development PartnerVerbraucherzentrale Hamburg is a core partner in the Hamburger Energielotsen initiative, conducting energy consultations for homeowners, tenants, and businesses. Their expertise complements ZEBAU's planning and coordination role in the publicly funded advice program.
• Baugenossenschaft Hamburger Wohnen eGminorImplementation/ SI/ Consulting PartnerZEBAU supported Hamburger Wohnen eG in the Finkenau residential quarter project, providing energy efficiency consulting, energy supply concept development, and subsidy advisory services for a 56-unit passive house building.
• Lawaetz-Stiftung (Hamburg)coreStrategic or Co-development PartnerLawaetz-Stiftung collaborates with ZEBAU on multiple projects including PV4All (focusing on balcony solar/Plug-In PV in Hamburg's integrated urban development neighborhoods) and the Finkenau building energy concept. The foundation combines its neighborhood management expertise with ZEBAU's energy advisory capabilities.
• IBA Hamburg GmbHcoreImplementation/ SI/ Consulting PartnerSince 2010, ZEBAU has served as an external service provider to IBA Hamburg GmbH for climate protection goals. Activities include quality assurance for building projects, monitoring of the Renewable Wilhelmsburg climate protection concept, heat supply coordination, and climate protection requirements in architectural competitions and land tenders. ZEBAU also created the Billbrook/Rothenburgsort climate protection partial concept for IBA.
• Averdung Ingenieure & Berater GmbHcoreStrategic or Co-development PartnerAverdung Ingenieure & Berater GmbH is ZEBAU's primary joint venture partner for integrated projects including the Kaltenkirchen climate protection concept (2025-2026), the Heimfeld-Eißendorf energetic neighborhood concept (Hamburg-Harburg), Eidelstedt Süd neighborhood concept, KfW 432 program support, and various other municipal heat planning and climate adaptation engagements.
• atene KOM GmbHminorStrategic or Co-development Partneratene KOM GmbH partnered with ZEBAU in the EU Interreg BSR project LUCIA (Lighting the Baltic Sea Region, 2019-2021) and the EU project GreenSAM, providing strategic project management support while ZEBAU handled content-focused project management and communication.
• rabe landschaftenminorStrategic or Co-development Partnerrabe landschaften collaborates with ZEBAU on climate adaptation concept projects, including the city of Pinneberg climate adaptation concept and the Stiftung Freundeskreis residential facility project. ZEBAU handles building and energy-related assessments while rabe landschaften contributes landscape architecture and outdoor space planning expertise.
• Energie-Agenturen Deutschlands (eaD e.V.)coreStrategic or Co-development PartnerZEBAU is an active member of the eaD association, with Peter-M. Friemert serving as deputy chairman. The network connects 39 German energy agencies with over 1,500 employees. ZEBAU hosted the 2026 annual meeting in Hamburg and facilitates knowledge exchange across German energy agencies.
• Behörde für Umwelt, Klima, Energie und Agrarwirtschaft (BUKEA) HamburgcoreGTM or Marketing PartnerBUKEA is the primary public funding body for the Hamburger Energielotsen program and commissions ZEBAU for various neighborhood energy concepts and climate protection projects in Hamburg. BUKEA also funds ZEBAU's participation in the Kommunales Klima Netzwerk and various event series.
• Umweltstiftung S.O.F. (Save our Future)minorStrategic or Co-development PartnerZEBAU collaborates with Umweltstiftung S.O.F. on the KLIMAfuchs project, conducting energy building checks in Hamburg kindergartens. ZEBAU performs building walkthroughs and produces energy saving reports as part of the KLIMAfuchs program that targets parents, children, and Kita staff for climate protection awareness.
• EU Interreg Baltic Sea Region (Multiple Projects)coreStrategic or Co-development PartnerZEBAU participates in multiple Interreg BSR projects: Easy Energy (2023-2026, energy efficiency for public buildings and SMEs), Energy Equilibrium (2023-2026, energy storage solutions for renewable expansion), EnTRA (platform project for knowledge transfer), PV4All (2022-2024, small-scale photovoltaics), LUCIA (2019-2021, urban lighting), GreenSAM (sustainable mobility), and LowTEMP (2017-2020, low-temperature district heating). Partner countries include Germany, Sweden, Finland, Denmark, Poland, Lithuania, Latvia, Estonia, and the Netherlands.
• EU Interreg Europe (MOLOC Project)minorStrategic or Co-development PartnerZEBAU participated in the Interreg Europe project MOLOC (Morphologies Low Carbon, 2017-2021), developing action plans for sustainable urban development with partner cities Lille (France), Turin (Italy), Katowice (Poland), and Suceava (Romania). Hamburg's focus was on commercial areas and energy efficiency measures.
• Horizon Europe / Horizon 2020 (I-HEROS Project)minorStrategic or Co-development PartnerZEBAU was the only German partner in the Horizon 2020 project I-HEROS (Integrated Home Energy Renovation Service, 2020-2024), which developed a One-Stop-Shop model for private home renovation support in Toulouse Métropole. ZEBAU contributed German experience from the Hamburger Energielotsen and IFB Hamburg programs, and analyzed German One-Stop-Shop replicability potential.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Energieagentur NRW: Energieagentur NRW is North Rhine-Westphalia's state energy agency providing consulting, training, and project management for municipalities, building owners, and industry on energy efficiency and climate protection. Comparable to ZEBAU in scope, target audience, and service portfolio, but serving a different German state.
• BET Büro für Energiewirtschaft und technische Planung: BET is an Aachen-based consulting firm providing energy economics and technical planning services for utilities, municipalities, and industry. Directly comparable to ZEBAU in energy consulting expertise, particularly in heat planning, district energy systems, and regulatory advisory work.
• IZES (Institut für ZukunftsEnergie- und Stoffstromsysteme): IZES is a Saarbrücken-based research institute providing applied research and consulting on renewable energy systems, energy efficiency, and sustainability. Comparable to ZEBAU in energy systems consulting with both research and project delivery capabilities, plus EU project participation.
• Berliner Energieagentur: Berliner Energieagentur is a Berlin-based energy agency offering energy consulting, municipal climate protection concepts, and energy efficiency services for buildings and districts. Directly comparable to ZEBAU as a regional energy consultancy serving public-sector clients with similar service offerings across the three business areas of buildings, neighborhoods, and education.
• HEAG (Hessische Energie-Agentur): HEAG is Hessen's energy agency providing energy efficiency consulting, climate protection, and education services to municipalities, companies, and private households. Directly comparable to ZEBAU as a regional energy agency with municipal consulting focus and educational programming.
• SAENA GmbH (Sächsische Energieagentur): SAENA is Saxony's state energy agency offering energy consulting, climate protection concepts, and training for municipalities and building professionals. Shares ZEBAU's public-sector focus, multi-disciplinary service model, and emphasis on training and education events.

Broad incumbents

• dena (Deutsche Energie-Agentur): dena is Germany's national energy agency providing energy transition consulting, networks, and certification services. Broader scope than ZEBAU with national-level mandate and significantly larger scale, but overlapping services in municipal energy consulting, building efficiency, and energy transition program delivery.
• adelphi: adelphi is a Berlin-based independent think tank and consultancy working on climate, energy, and resource policy. Overlaps with ZEBAU in climate/energy consulting for the public sector but operates more at policy and strategy level rather than technical implementation at building and neighborhood scale.
• ifeu Heidelberg: ifeu (Institut für Energie- und Umweltforschung Heidelberg) is a research institute providing applied research and consulting on energy efficiency, climate protection, and resource conservation. Comparable to ZEBAU in technical expertise on building energy and sustainability but operates more as a research organization.
• Öko-Institut: Öko-Institut is a leading German environmental research institute providing applied research and consulting on energy, climate, and sustainability. Comparable to ZEBAU in energy/climate consulting expertise but operates primarily as a research institute rather than as a project implementation firm with technical planning services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@zebau-zentrumfurenergiebau8370
• LinkedInde.linkedin.com/company/zebau-gmbh---zentrum-f%C3%BCr-energie-bauen-architektur-und-umwelt
• Instagraminstagram.com/zebauhamburg

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Funding overview

Funding rounds

Investors

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M&A

Investments

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Frequently asked questions about Zentrum für Energie, Bauen, Architektur und Umwelt