INNAX

What INNAX does

INNAX is a Dutch engineering and sustainability consultancy founded in 1992 and headquartered in Veenendaal, focused on decarbonizing the built environment across the Netherlands. The firm serves property owners, housing corporations (woningcorporaties), healthcare institutions, educational institutions, commercial real estate owners, and project developers with an integrated offering that spans the entire sustainability lifecycle: ambition setting, data analysis, planning, financing, realization, and long-term operation. Its core solutions are organized around six pillars (Grip op energie, Vastgoed geregeld, Woningkwaliteit op orde, Toekomstvaste gebouwen, Toekomstvaste woningen, Toekomstvast bouwen), supplemented by proprietary tools such as the Paris Proof Monitor Woningen (portfolio decarbonization visualization), EAASY Energy as a Service (15-30 year subscription-based energy outsourcing), Delen Duurzame Energie (collective solar participation), GACS building automation, and Brandveiligheidsdesk fire safety consulting.

Underlying technology is domain-specialized rather than core-tech: data-driven energy monitoring, building automation and control systems, subsidy navigation (SDE++, ISDE, DUMAVA, Flex-e), and regulatory compliance tooling tailored to Dutch frameworks (NTA8800, GACS-verplichting, Wet collectieve warmte). The company operates through eight wholly-owned B.V. subsidiaries covering measurement (INNAX Meten), residential (INNAX Woningen), buildings (INNAX Gebouwen), sustainable energy (INNAX Duurzame Energie), and regional coverage (Noord, Zuid, Baarn, Goes).

INNAX generates revenue through three streams: professional consultancy services (project-based advisory and energy audits), subscription-based Energy as a Service contracts under the EAASY brand (multi-decade recurring revenue with INNAX retaining asset and operational responsibility), and the Energie bv structure (helping clients establish separate, financially ring-fenced energy entities with potential fiscal advantages). Go-to-market is B2B enterprise field sales, complemented by content-led thought leadership (Kennisbank, podcast 'Duurzaam corporatieland', webinars). Named enterprise customers include Philips, Cordaan, NOPagrowind, Woonservice IJsselland, Rondom Wonen, and Woonstede. In June 2026 INNAX announced it will become part of engineering and consultancy firm Movares, and the firm has executed a sustained roll-up of seven acquisitions between 2019 and 2025.

Name

INNAX

Legal name

INNAX Gebouw en Omgeving B.V.

Website

https://innax.nl

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

251–500 employees

Short description

INNAX is a Dutch engineering and sustainability consultancy decarbonizing the built environment for housing corporations, property owners, healthcare, education, and commercial real estate clients through advisory, Energy as a Service subscriptions, and proprietary monitoring tools across the Netherlands.

Ownership category

akta.pro rank

Product category

Sustainability and Energy Consultancy for Built Environment

NAICS

Engineering Services (54133), Computer Systems Design Services (541512)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Management Consulting Services (8742)

akta.pro primary industry

Performance Contracting & Energy-as-a-Service (EaaS) for Buildings (BPABAGAN)

akta.pro secondary industry

EHS Management Systems & ISO Consulting (ISO 14001/45001) (BPAHAJAF)

Keywords

• Sustainability consulting
• Building energy services
• Energy management solutions
• Fire safety consulting
• Housing decarbonization

Headquarters

HQ city

Veenendaal

HQ country

Netherlands

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy as a Service (EAASY): Full-service energy solution where INNAX designs, finances, realizes and exploits energy systems for clients over 15-30 year periods. Clients pay a subscription fee and receive guaranteed energy performance without capital investment.
2. Professional Consultancy Services: Advisory services covering sustainability planning, energy audits, building automation, fire safety compliance, and renovation consulting. Services include data analysis, plan development, and project management.
3. Energy bv Structure: INNAX helps clients establish separate energy units (Energie bv) that can be legally and financially separated, enabling separate financing and potential tax advantages while maintaining focus on core activities.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

INNAX is a Dutch engineering and sustainability consultancy that helps property owners, housing corporations, healthcare and educational institutions decarbonize their building portfolios. The company delivers end-to-end services spanning sustainability strategy, data analysis, financing, realization, and long-term operation, including an Energy as a Service subscription model (EAASY) covering design, financing, realization, and exploitation of energy systems for periods up to 30 years.

Product overview

INNAX is a sustainable building and energy consultancy offering an integrated portfolio of solutions for decarbonizing buildings and housing portfolios. The offering spans advisory, financing, realization, and operation services organized around six core solutions: Grip op energie (energy management), Vastgoed geregeld (real estate management), Woningkwaliteit op orde (housing quality), Toekomstvaste gebouwen (future-proof buildings), Toekomstvaste woningen (future-proof homes), and Toekomstvast bouwen (future-proof construction). The EAASY subscription model delivers these as a bundled Energy as a Service offering. Supporting tools include the Paris Proof Monitor Woningen for portfolio visualization and Delen Duurzame Energie for collective solar participation. INNAX operates through multiple divisions including INNAX Meten, INNAX Woningen, INNAX Gebouwen, and INNAX Duurzame Energie.

Differentiator

Problem solved

Functional benefit

Brands

• EAASY: Energy as a Service subscription model solution enabling organizations to outsource sustainability through an abonnementsmodel (subscription model).
• Paris Proof Monitor Woningen

Products and services

• Grip op energie Energy management solution providing insight and control over energy consumption and performance for building owners.
• Vastgoed geregeld
• Woningkwaliteit op orde
• Toekomstvaste gebouwen
• Toekomstvaste woningen
• Toekomstvast bouwen
• EAASY (Energy as a Service) Energy as a Service subscription model providing complete outsourcing of sustainability and energy supply, including design, realization, financing, and operation for periods up to 30 years.
• Paris Proof Monitor Woningen Digital monitoring tool enabling housing corporations to dynamically calculate and visualize the sustainability route of their housing stock toward Paris Proof targets for 2030 and 2050.
• Delen Duurzame Energie Sustainable energy sharing service enabling housing corporations to maximize use of rooftops for solar energy generation and offer residents participation in collective renewable energy.
• Brandveiligheidsdesk Fire safety consulting and management services covering inspection, maintenance, and certification of safety installations such as fire alarm, emergency lighting, gas detection, and evacuation systems.
• Energie bv Energy company setup service helping organizations establish separate legal energy units for financing and operating sustainable energy installations with potential fiscal benefits.

Quantifiable outcome

• Guaranteed energy savings through 15-30 year Energy as a Service contracts
• +1 more outcomes

Named customers7 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• MovarescoreStrategic or Co-development Partner · 1 June 2026INNAX announced becoming part of engineering and consultancy firm Movares. This power union increases their capacity in the energy transition. The partnership combines INNAX's sustainability expertise with Movares' engineering and advisory capabilities to create a stronger market position in Dutch sustainable building.
• NOAHH | Network Oriented ArchitecturecoreStrategic or Co-development PartnerArchitecture firm part of the construction team for Christelijk Lyceum Veenendaal project. Collaborated on the design of a nearly energy-neutral school building with emphasis on circularity and reuse.
• HEVOminorStrategic or Co-development PartnerPart of the construction team for the Christelijk Lyceum Veenendaal project, contributing project management and development expertise.
• EX InteriorsminorStrategic or Co-development PartnerInterior design partner in the construction consortium for the Christelijk Lyceum Veenendaal project.
• ZRiminorStrategic or Co-development PartnerEngineering consultancy partner in the Christelijk Lyceum Veenendaal project team.
• Pieters BouwtechniekminorStrategic or Co-development PartnerConstruction engineering partner contributing technical expertise to the school building project.
• Burgland BouwcoreImplementation/ SI/ Consulting PartnerMain construction contractor for the Christelijk Lyceum Veenendaal project, executing the building work in collaboration with INNAX's sustainability expertise.
• KPMSminorStrategic or Co-development PartnerConstruction advisory firm KPMS announced partnership with INNAX in December 2023 to combine expertise in sustainable construction advisory.

Scale indicators1 record

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Heijmans: Major Dutch construction and real estate company that increasingly bundles energy services and sustainable renovation offerings. Competes with INNAX in delivering decarbonization and energy services to Dutch housing corporations and commercial property owners.
• Witteveen+Bos: Dutch engineering and consultancy firm with established energy transition and sustainable building capabilities. Comparable to INNAX in serving Dutch institutional and infrastructure clients on sustainability and energy engineering projects.
• ENGIE Nederland: Dutch arm of global energy services giant ENGIE, providing energy-as-a-service, building energy management, and sustainability solutions. Directly comparable to INNAX's EAASY offering and building automation (GACS) practice, but with significantly larger balance sheet and international capabilities.
• Sweco Nederland: Nordic-origin engineering consultancy with substantial Dutch operations covering sustainable buildings, energy, and infrastructure. Competes with INNAX in Dutch sustainability advisory for public and commercial real estate clients.
• Royal HaskoningDHV: Large Dutch-headquartered global engineering consultancy with deep sustainability, buildings, and energy transition practices. Competes with INNAX for large Dutch sustainability and building performance mandates, but at far greater scale and international breadth.
• Eneco: Major Dutch energy company with growing B2B services portfolio including energy-as-a-service and sustainable building solutions for commercial and institutional customers. Comparable to INNAX in Dutch building energy services, though operating at materially larger scale.
• Arcadis: Dutch-founded global design, engineering, and consultancy firm with a strong sustainability and buildings practice in the Netherlands. Competes with INNAX on Dutch building decarbonization, energy performance, and sustainability mandates at the larger end of the market.

Direct peers

• Deerns: International building services engineering consultancy with strong Dutch operations in HVAC, energy, and sustainable building design. Comparable to INNAX in serving Dutch commercial real estate and institutional clients with energy-focused engineering services.
• DGMR: Dutch engineering consultancy specialized in building physics, acoustics, and fire safety. Overlaps directly with INNAX's fire safety consulting and building performance advisory practice for Dutch property owners.
• Movares: Dutch engineering and consultancy bureau covering infrastructure, buildings, and energy transition. INNAX's announced parent (June 2026 combination), making it the closest direct peer in Dutch sustainable building and energy engineering consulting.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCXYpVydQ2TwAjAVJxY6wmAw
• LinkedInnl.linkedin.com/company/innax
• Instagraminstagram.com/werkenbijinnax
• Xx.com/innaxie

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries8 records

Funding overview

Funding rounds

Investors

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

M&A7 records

Investments

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

Frequently asked questions about INNAX