What Vabi does

Vabi (legally Vitec Vabi Software, B.V.) is a Dutch building performance simulation software company headquartered in Delft, Netherlands, with origins in the early 1970s as a TNO (Netherlands Organisation for Applied Scientific Research) spin-off. It develops deterministic, physics-based calculation models and packaged software for energy performance certification, building physics simulation, and HVAC/technical system design, all calibrated to Dutch regulatory standards — notably NTA 8800, NEN 7120, the BENG requirements of the Bouwbesluit, and the BRL 9500 certification scheme for Energy Performance Advisors. The company claims nine out of ten Dutch utility buildings have been simulated using its calculation models, and its software is cited as being prescribed in tender specifications ("bestek") by the largest Dutch clients.

Its product portfolio is organized around four core lines: Vabi EPA (energy label and BENG calculation software for residential and utility buildings, including maatwerkadvies modules), Vabi Assets Energie (housing-corporation and municipal portfolio energy management platform, now offered in a cloud variant), Vabi Elements (integrated building performance simulation covering heat loss, cooling load, building simulation, acoustics, and ventilation), and Vabi Uniforme Omgeving (technical fluid-dynamics calculations for tap water, pipe networks, air ducts, gas, and rainwater drainage). These are unified under the Vabi Platform (app.vabi.nl), introduced in 2024, which provides centralized single sign-on (including Microsoft Entra ID), license and user administration, the Vabi Connect API, and online product delivery, replacing the legacy on-premise administration model. BCRG integration automatically pulls quality-declaration data for heat pumps, ventilation, PV, and other components into calculations.

Vabi operates on an annual subscription model (jaarabonnement) with automatic renewal, three-month cancellation notice, and CPI-indexed pricing; revenue is supplemented by paid training through Vabi Academy. Distribution combines direct enterprise sales, a self-service webshop (shop.vabi.nl), and a wide network of third-party training partners (cursusbureaus) and certification bodies (KIWA, SKG-IKOB, EPG Certificering, Vink Certificering) that standardize EP-advisor education on Vabi EPA. The customer base spans housing corporations, municipalities, certified EP-advisors, and engineering/installation firms, and the company is a wholly-owned subsidiary of Sweden's Vitec Software Group, a publicly listed vertical-software acquirer.

Name

Vabi

Legal name

Vitec Vabi Software

Website

https://vabi.nl

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

51–100 employees

Short description

Vabi (Vitec Vabi) is a Dutch building performance simulation software company providing NTA 8800 / BENG energy-label and building-physics calculation tools to housing corporations, municipalities, certified energy advisors, and engineering firms across the Netherlands via subscription.

Ownership category

akta.pro rank

Headquarters

HQ city

Delft

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Annual Software Subscription: Vabi software is primarily licensed as an annual subscription (jaarabonnement). The subscription covers software usage rights per calendar year, includes all updates and norm changes, new functionalities, and support. The agreement automatically renews annually and can be terminated with 3 months notice before year-end. Pricing is indexed annually to inflation (CPI).
2. Professional Services (Training): The Vabi Academy offers paid training programs including introduction trainings, update trainings, webinars, and custom on-site (in-company) training sessions. Training is delivered by Vabi's in-house consultants and covers software usage and methodologies.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Vabi (trading as Vitec Vabi) develops and sells specialized Dutch building performance simulation software covering energy label calculation, BENG compliance testing, integrated building physics simulation, technical fluid dynamics calculations, and portfolio-level housing energy management. The company's products are built on calculation models originally developed at TNO and are deeply integrated with Dutch building regulations including NTA 8800, BENG requirements, and BRL 9500 certification.

Product overview

Vabi (trading as Vitec Vabi) provides a portfolio of four core software products for building energy performance and simulation: Vabi EPA for energy label calculation and BENG compliance, Vabi Assets Energie for housing portfolio energy management, Vabi Elements for integrated building performance simulation, and Vabi Uniforme Omgeving for technical engineering calculations. These are complemented by the Vabi Platform customer portal (providing centralized login, license, and user management with API access), the Vabi Webshop for license procurement, and the Vabi Academy for training and certification preparation. The software suite targets Dutch energy advisors, housing corporations, engineers, installers, and building designers, all rooted in 50+ years of expertise developed from TNO research on energy and comfort modeling.

Differentiator

Problem solved

Functional benefit

Products and services

• Vabi EPA Software for calculating energy labels, generating energy performance recommendations (maatwerkadvies), and testing BENG (Nearly Energy-Neutral Buildings) requirements per the Dutch Building Decree. Available for both residential (EPA-W) and commercial (EPA-U) buildings. Used by certified EP-advisors under BRL 9500 to register official energy labels and produce BENG calculations for building permits.
• Vabi Assets Energie Platform for managing, monitoring, and improving the energy performance of housing portfolios. Includes a cloud version and modules targeting municipal real estate (Gemeentemarkt), advisors, and utility buildings. Used by housing corporations and municipalities to determine sustainability policy, execute renovation measures, monitor outcomes, and report on sustainability.
• Vabi Elements Integrated building performance simulation platform for modeling buildings, testing compliance with requirements, and simulating installation concepts at the ambition level of the client. Calculates one or multiple building performances integrally, including heat loss, cooling load, building simulation, acoustics/reverberation, and ventilation.
• Vabi Uniforme Omgeving

Quantifiable outcome

• 9 out of 10 utility buildings in the Netherlands have been simulated using Vabi's calculation models
• +1 more outcomes

Named customers4 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature6 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Ortec FinancecoreStrategic or Co-development PartnerOrtec Finance and Vitec Vabi work closely together so that housing corporations can better determine, execute, and monitor their sustainability policy. The partnership combines Vabi's energy performance software with Ortec Finance's financial planning and risk management tools for the real estate sector.
• BCRG (B Centrale Regeling Gebouwsimulaties)coreTechnology or IntegrationVabi EPA and Vabi Assets Energie integrate with the BCRG database through an automated coupling, allowing advisors to pull up-to-date quality declaration (kwaliteitsverklaring) data for heat pumps, ventilation, solar panels, and other building installations directly into their calculations.
• KEGO (Stichting Kwaliteitsborging Energie Gebouw Onderhoud)coreStrategic or Co-development PartnerKEGO is the industry body that sets guidelines for applying quality declarations in energy performance calculations. Vabi collaborates with KEGO on input instructions for quality declarations and frequently references KEGO guidance in its knowledge articles and software documentation.
• EPG CertificeringminorChannel Partner/ Reseller/ DistributorEPG Certificering is one of the certification bodies that can issue BRL 9500 certificates to companies performing energy performance advisory services. EP-advisors use Vabi EPA software to register labels under these certifications.
• KIWAminorChannel Partner/ Reseller/ DistributorKIWA is a certification body that issues BRL 9500 certificates for EP-advisory companies under the NTA 8800 standard. Vabi EPA is the designated software for advisors certified through KIWA.
• SKG-IKOBminorChannel Partner/ Reseller/ DistributorSKG-IKOB is a certification body for BRL 9500 certification of energy performance advisors. Advisors certified through SKG-IKOB use Vabi EPA for their calculations and registrations.
• Vink CertificeringminorChannel Partner/ Reseller/ DistributorVink Certificering offers BRL 9500 certification for EP-advisory companies. Vabi EPA is the standard software used by advisors under this certification scheme.
• Cursusbureaus (Training Partners)minorChannel Partner/ Reseller/ DistributorNetwork of training partners including Kader Opleidingen, Helix Academy, Unielabel, Meijer, BuildingLabel, A.V.E.B., 1rgielabel, Bengoopleiding, BOB, Freitas, Onze Joost, FedEC, Habitask, VastgoedBS, Etran, Labelgroen who offer EPA education and certification preparation using Vabi software as the training platform.
• Koepel OrganizationsminorChannel Partner/ Reseller/ DistributorKoepel organizations (Onze Joost, 1rgielabel, BuildingLabel, Duurzaam Energieloket, Immocert) are themselves BRL 9500 certified, allowing individual advisors to register energy labels under their umbrella certificate. These koepels use Vabi EPA for label registration.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• IES (Integrated Environmental Solutions): UK-based provider of the IES Virtual Environment suite for integrated building performance simulation (energy, daylight, HVAC, comfort). Directly comparable to Vabi Elements and Vabi Uniforme Omgeving as a specialist building physics simulation platform for engineers and consultants.
• EQUA Simulation AB: Swedish vendor of IDA Indoor Climate and Energy (IDA ICE), a leading building energy and thermal comfort simulation tool. Directly comparable to Vabi Elements as a domain-specialized simulation engine used by engineers for compliance and design-stage performance analysis.
• DesignBuilder Software: UK-based vendor of DesignBuilder, an EnergyPlus-based building performance simulation front-end widely used by consultants for energy, comfort, and daylight analysis. Closely comparable to Vabi Elements as a specialist building energy simulation tool targeting engineers and energy advisors.

Others

• Arcadis: Global design, engineering, and consultancy firm headquartered in the Netherlands with significant building sustainability and energy advisory practices. Comparable as a large Dutch engineering buyer/user of energy performance tools and a key channel voice in the same ecosystem.
• Royal HaskoningDHV: Large Dutch engineering consultancy with deep building, sustainability, and energy advisory practices that regularly use Vabi products. Comparable as a Dutch market participant and major Vabi customer/user, but operates in services rather than as a software competitor.
• Deerns: Specialist Dutch engineering consultancy focused on building services, sustainability, and energy performance. A direct user of Vabi Elements and Vabi Uniforme Omgeving in MEP and sustainability consulting; comparable as a key Dutch ecosystem participant and software customer rather than a competitor.

Emerging players

• EnergyPlus / OpenStudio (NREL / DOE): Free, open-source building energy simulation engine and front-end maintained by the U.S. Department of Energy's National Renewable Energy Laboratory. Comparable to Vabi's underlying calculation models as a foundational energy simulation engine, though it lacks Dutch regulatory certification and advisor workflow.

Broad incumbents

• Bentley Systems (OpenBuildings / iTwin): Bentley Systems provides OpenBuildings and the iTwin platform for building design, performance, and asset analytics. Comparable to Vabi as a broad infrastructure-software incumbent with overlapping building performance and asset-management capabilities.
• Autodesk (Revit / Insight / Forma): Global BIM platform whose Revit, Insight, and Forma products embed energy and sustainability analysis directly into mainstream architectural design workflows. Comparable to Vabi as a competitive incumbent with broad BIM reach, even though it does not produce NTA 8800-specific regulatory calculations.
• Trimble (Sefaira): Trimble's Sefaira offers real-time energy and daylight analysis for early-stage building design, integrated with SketchUp and Revit. Comparable to Vabi Elements as a building energy design tool, but positioned earlier in the design workflow and sold as part of a broader AEC software portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/vabisoftware
• LinkedInlinkedin.com/company/vabi-software-b-v-

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Vabi