21 Groep
21 Groep is a Dutch technical services group delivering electrical and mechanical installations, security systems, and sustainable energy solutions across Southwest Netherlands and Flanders through seven subsidiaries and four branded service labels.
- Company typePrivate
- Founded2015
- HeadquartersTerneuzen, Netherlands
- Headcount51–100
- GTM typeB2B and B2C
- OfferingServices
What 21 Groep does
21 Groep is a privately held Dutch technical services group headquartered in Terneuzen and founded circa 2015, operating across Southwest Netherlands (Zeeland and West-Brabant) and Flanders, Belgium. The group delivers a full-stack package of electrotechnical (E) and mechanical (W) installation services — covering advice, design, engineering using BIM/Revit, realization, management, and ongoing maintenance — to industrial, utility/residential-construction, and security customers. Its portfolio spans solar panels (€3,500–€7,800 installed packages from Elektra 21), heat pumps (Daikin and Intergas, €4,950–€8,600), EV charging stations via an Ecotap partnership, fire detection, intrusion/access control, CCTV, intercoms, air conditioning, ventilation, and water softening, plus SCIOS Scope 8/10/12 inspection services under InSpect 21.
The operating model is structured as seven wholly-owned subsidiaries (InduCon 21, Elektra 21, Install 21, ProTect 21, 21 Academy, IBZ acquired in 2022, and BVI Services added in 2023) supported by four service labels (LogBoek 21 digital logbooks, AdviSun 21 sustainable energy, ComFort 21 domotics for independent living, InSpect 21 inspections). Revenue is generated through a mix of one-time project work, recurring maintenance contracts (€59–€225 per year for solar cleaning and maintenance, €185–€205 per year for heat-pump service), and professional services including the 21 Academy training pipeline backed by the WIJ Techniek development fund. Distribution is regional and sales-led across five branches (Terneuzen, Goes, Rucphen, Ossendrecht, Kamperland), targeting enterprise field accounts (ZorgSaam, Cosun Beet Company, Innocent, Katoennatie), semi-government tenders, and SMB/residential customers in Southwest Netherlands and Flanders.
Certifications including CCV 5.0 + A1 for fire alarm systems, NEN 4400-01 for 21 Academy, and SCIOS Scope 8/10/12 for inspections support the regulated security and industrial-safety segments. The group is privately owned by founders and management with no disclosed external investors, and leadership transitioned from founder Marco van Maaren to René de Keijzer as CEO.
21 Groep firmographics
Firmographics- Name
- 21 Groep
- Legal name
- 21Groep BV
- Website
- https://21groep.nl
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- 21 Groep is a Dutch technical services group delivering electrical and mechanical installations, security systems, and sustainable energy solutions across Southwest Netherlands and Flanders through seven subsidiaries and four branded service labels.
- Ownership category
- akta.pro rank
21 Groep industry classification
Industry- Product category
- Electrical and Mechanical Installation Services
- NAICS
- Electrical Contractors and Other Wiring Installation Contractors (238210), Plumbing, Heating, and Air-Conditioning Contractors (23822), Security Systems Services (56162), Engineering Services (541330)
- SIC
- Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Outlet, Switch, GFCI/AFCI & Receptacle Installation (HSAOADAE)
- akta.pro secondary industry
- Security Governance, Risk & Compliance (GRC) Advisory (BPAKADAG)
Keywords
Where 21 Groep is headquartered
LocationHeadquarters
- HQ city
- Terneuzen
- HQ country
- Netherlands
- HQ region
- Europe
Offices5 records
Markets served
21 Groep business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Installation Projects: Realization of electrical and mechanical installations for industry, utility, and residential construction customers. Includes design, engineering, and execution of E and W installations.
- Maintenance and Service Contracts: Ongoing maintenance and management of installed systems including solar panels, heat pumps, security systems, and industrial equipment. Includes preventive and predictive maintenance services.
- 21 Academy Training Services: Training and development platform for technical talent, offering work-study programs in construction, industry and infrastructure. They train candidates in electro- and installation technology.
- Product Sales: Sale of sustainable products including solar panels, heat pumps, charging stations, and related equipment with installation services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Solar Panel Basic Package - 8 Sunova panels 405 wp with Goodwe inverter |
| One time/ perpetual license | Pay-as-you-go | Solar Panel Premium Package - 10 Sunova panels 405 wp with SMA inverter |
| One time/ perpetual license | Pay-as-you-go | Solar Panel Premium+ Package - 12 Sunova panels with Enphase inverters |
| One time/ perpetual license | Pay-as-you-go | Solar Panel Excellent Package - 12 Solarwatt Vision AM 4.0 panels with Enphase |
| One time/ perpetual license | Pay-as-you-go | Daikin altherma 3 LT Wall model 8kW heat pump |
| One time/ perpetual license | Pay-as-you-go | Daikin Hybrid Heat Pump 8kW with Intergas CW5 boiler |
| One time/ perpetual license | Pay-as-you-go | Daikin altherma 3 LT Floor model with 180L boiler 6kW |
| Subscription | Annual | Solar Panel Annual Cleaning - up to 5 panels |
| Subscription | Annual | Solar Panel Annual Cleaning - up to 10 panels |
| Subscription | Annual | Solar Panel Annual Cleaning - up to 20 panels |
| Subscription | Annual | Solar Panel Annual Cleaning - up to 35 panels |
| Subscription | Annual | Maintenance Contract - up to 5 panels |
| Subscription | Annual | Maintenance Contract - up to 10 panels |
| Subscription | Annual | Maintenance Contract - up to 20 panels |
| Subscription | Annual | Electric Heat Pump Annual Maintenance |
| Subscription | Annual | Hybrid Heat Pump Annual Maintenance |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
21 Groep product offering
Product offeringCore offering
21 Groep is a technical services group that designs, installs, manages, and maintains electrical (E) and mechanical (W) installations for industry, utility/residential construction, and security customers across Southwest Netherlands and Flanders. The group operates through seven specialized companies covering industrial electrical/mechanical engineering, residential and commercial electrical installations, HVAC and heating, certified security and fire detection systems, and technical training. Tangible products (solar panels, heat pumps, charging stations, air conditioning, ventilation, water softeners, intrusion, fire, access control, and intercom systems) are sold bundled with installation and ongoing service contracts.
Product overview
21 Groep is a multi-brand technical services company consisting of seven distinct companies offering a comprehensive portfolio of electrotechnical (E) and mechanical (W) installation services. The core sub-brands include Elektra 21 (electrical installations, solar panels, charging stations), Install 21 (mechanical installations, heating, ventilation), ProTect 21 (security and fire systems), InduCon 21 (industrial installations), IBZ (regional installation services), and 21 Academy (technical training). Supporting labels include LogBoek 21 (digital documentation), AdviSun 21 (solar energy), ComFort 21 (domotics for independent living), and InSpect 21 (technical inspections). The product offering spans renewable energy solutions (solar panels, heat pumps, charging stations), climate control (air conditioning, ventilation), water treatment, and comprehensive security systems (intrusion detection, fire alarms, access control, CCTV, intercoms). Services range from consulting and design through installation to ongoing maintenance and management.
Differentiator
Problem solved
Functional benefit
Brands
- LogBoek 21: Online registration tool for managing and documenting maintenance and inspection activities on security and communication installations.
- AdviSun 21
- ComFort 21
- InSpect 21
Products and services
- Elektra 21
Quantifiable outcome
- Heat pumps can save up to 70% on gas costs
- +2 more outcomes
Companies that use 21 Groep
Customer profileNamed customers7 records
Segments5 records
Ideal customer profiles4 records
21 Groep technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
21 Groep partnerships and signals
Strategic signalPartnerships
Seven partnerships are on record, tiered core.
- FireStaffcoreProTect 21 and FireStaff have bundled their strengths through a master agreement for the execution of manager tasks for fire alarm, evacuation installations and sprinkler systems. The strong increase in management tasks led ProTect 21 to seek a partner to better serve customers together.
- 123ATEX.eucoreInduCon 21 and 123ATEX.eu have bundled forces for safety and expertise in explosive environments.
- Stichting Energiek Zeelandcore21 Groep is partner of Platform Energiek Zeeland which aims to make Zeeland energy neutral by 2045 through the Regional Energy Strategy (RES).
- WIJ Techniek (Techniek Nederland)coreAll training programs of 21 Academy are supported by WIJ Techniek, the development fund of Techniek Nederland.
- CuriocoreBBL (work-study) education partner for elektrotechniek and installatietechniek programs. Students combine school with working in practice at 21 Groep companies.
- Zeeuws-Vlaamse Verwarmingsunie (ZVU)coreZVU collaborated with Elektra 21 and Bouwbedrijf Sprangers on the OK's project for ZorgSaam, providing heating and technical expertise.
- Bouwbedrijf SprangerscoreConstruction partner in building team for ZorgSaam hospital project in Terneuzen.
Scale indicators5 records
Recent moves7 records
Expansion highlights6 records
21 Groep competitors and assessment
Company assessmentDirect peers
- Van Dorp Installateurs: Van Dorp is a Dutch family-owned installation company offering electrical, mechanical, and security services for utility, residential, and industrial customers, making it a strong regional and structural peer to 21 Groep.
- Unica: Unica is a Dutch technical installation group covering electrical, mechanical, security, and energy transition services for industry, utility, and residential customers, making it one of the closest direct peers to 21 Groep in terms of multi-brand service model.
- Hoppenbrouwers Techniek: Hoppenbrouwers Techniek is a Dutch installer covering electrical, mechanical, and sustainable energy installations (solar, heat pumps, EV charging) for residential and commercial customers, closely matching the Elektra 21/Install 21 portfolio.
- Kuijpers: Kuijpers is a Dutch technical services provider offering electrical, mechanical, and control & automation solutions for industry, utility, and residential markets, with a comparable focus on installation plus recurring maintenance contracts.
- Feenstra Installatie: Feenstra is a Dutch installer focused on heating, electrical, and sustainable residential installations, closely comparable to Elektra 21 and Install 21's residential solar, heat pump, and EV charging offerings.
- VDK Groep: VDK Groep is a Dutch network of independent installation companies delivering electrical, HVAC, and security services, structurally comparable to 21 Groep's federation of specialized subsidiaries.
Broad incumbents
- SPIE Nederland: SPIE Nederland provides multi-technical services including electrical installations, HVAC, security, and industrial automation across the Netherlands, overlapping directly with all seven 21 Groep subsidiaries at larger scale.
- Croonwolter&dros: Croonwolter&dros is a major Dutch electrical and mechanical installation firm serving industry, utilities, and infrastructure with a multi-disciplinary offering comparable to 21 Groep's seven-company structure, but at materially larger national scale.
- ENGIE Services Nederland: ENGIE Services Nederland is a large incumbent technical services provider covering HVAC, electrical, and energy transition installations for commercial, industrial, and residential customers across the Netherlands, competing with 21 Groep's larger project bids.
- BAM Bouw en Techniek: BAM Bouw en Techniek is the installation and technical services arm of Royal BAM Group, a large Dutch construction group offering multi-disciplinary installations for utility, residential, and industrial customers at national scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
21 Groep social profiles
Digital presence21 Groep financial estimates
Financial estimateRevenue estimate
Valuation estimate
21 Groep leadership team
Management profileNumber of profiles
Profiles11 records
21 Groep subsidiaries and ownership
Company hierarchySubsidiaries7 records
21 Groep funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
21 Groep M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about 21 Groep
What does 21 Groep do?
21 Groep is a technical services group that designs, installs, manages, and maintains electrical (E) and mechanical (W) installations for industry, utility/residential construction, and security customers across Southwest Netherlands and Flanders. The group operates through seven specialized companies covering industrial electrical/mechanical engineering, residential and commercial electrical installations, HVAC and heating, certified security and fire detection systems, and technical training. Tangible products (solar panels, heat pumps, charging stations, air conditioning, ventilation, water softeners, intrusion, fire, access control, and intercom systems) are sold bundled with installation and ongoing service contracts.
Is 21 Groep a public or private company?
21 Groep is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was 21 Groep founded?
21 Groep was founded in 2015. It employs 51 to 100 people.
Where is 21 Groep based?
21 Groep is headquartered in Terneuzen, Netherlands, in the Europe region.
How does 21 Groep make money?
Four revenue lines are on record. Installation Projects are the primary driver. The others are maintenance and Service Contracts, 21 Academy Training Services and product Sales.
Who are 21 Groep's main competitors?
Direct peers on record are Van Dorp Installateurs, Unica, Hoppenbrouwers Techniek, Kuijpers, Feenstra Installatie and VDK Groep. Broad incumbents are SPIE Nederland, Croonwolter&dros, ENGIE Services Nederland and BAM Bouw en Techniek.
Does 21 Groep have an API?
No public API is recorded for 21 Groep.
What industry is 21 Groep in?
21 Groep's product category is Electrical and Mechanical Installation Services. Its primary akta.pro industry code is HSAOADAE, Outlet, Switch, GFCI/AFCI & Receptacle Installation, with a secondary code of BPAKADAG, Security Governance, Risk & Compliance (GRC) Advisory. Its NAICS code is 238210 and its SIC code is 8700.