Koster Elektrotechniek B.v.

What Koster Elektrotechniek B.v. does

Koster Elektrotechniek B.V. is a Dutch full-service electrical contracting company headquartered in Hardinxveld-Giessendam, founded in 1992 and transitioned to second-generation family leadership in 2025. The firm designs, installs, and maintains electro-technical systems for both private homeowners and commercial/utility buildings across the Netherlands, with a service portfolio spanning core electrical installations, air conditioning (Mitsubishi Electric, Daikin), data cabling (Cat. 5e/6), intrusion alarms, access control (Paxton), emergency lighting, and NEN 2535/2575/2576-compliant fire alarm and evacuation systems (EN 54 materials).

The company has built depth in KNX-certified home and building automation (domotica) since becoming a KNX Partner in 2021, and has expanded a sustainability line covering solar panels, home and commercial batteries, EV charging stations (Easee), and solar carports. Its technology stack relies on industry-standard protocols (KNX, Paxton, Easee) rather than proprietary platforms, but its competitive position is anchored by certifications (InstallQ BRL 6000 via KIWA, Zegelrecht, NEN 1010, NEN 3140, EN 54) and recognition as an Erkend Leerbedrijf training company.

Revenue is generated through project-based one-time installation work, recurring maintenance and inspection contracts, 24/7 emergency service, and a newer solar carport managed-leasing model where Koster finances and maintains the asset for a fixed annual fee. Go-to-market is sales-led, direct, and personal: phone, email, and free consultation, primarily serving the Dutch regional market with no disclosed geographic expansion. Only three employees are publicly named (Director Ramon Muilwijk, allround electrician Ivar Both, Willem van Broekhoven), and no revenue, headcount, or external funding is disclosed.

Name

Koster Elektrotechniek B.v.

Legal name

Koster Elektrotechniek B.V.

Website

https://kosterelektrotechniek.nl

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

11–50 employees

Short description

Koster Elektrotechniek B.V. is a Dutch, family-owned full-service electrical contracting company providing installations, maintenance, and sustainable energy solutions for residential and commercial buildings across the Netherlands, with KNX-certified smart home and EV charging expertise.

Ownership category

akta.pro rank

Headquarters

HQ city

Hardinxveld-Giessendam

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Installation Services: One-time installation of electrical systems, air conditioning, data installations, security systems, and sustainable energy solutions for residential and commercial buildings.
2. Maintenance and Inspection Services: Ongoing maintenance contracts and periodic inspections for electrical installations, fire safety systems, access control, and emergency lighting. Includes 24/7 emergency repair service.
3. Solar Carport Leasing: Lease arrangement for solar carports where Koster handles financing and maintenance. Customers pay a fixed annual lease amount.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Koster Elektrotechniek B.V. provides complete electro-technical installation, maintenance, and inspection services for residential and commercial buildings in the Netherlands. Core offerings include electrical installations, air conditioning (Mitsubishi Electric, Daikin), data cabling, fire alarm and evacuation systems, intrusion alarms, Paxton access control, emergency lighting, and sustainability solutions such as solar panels, home batteries, Easee EV charging stations, solar carports, and KNX-based smart home automation. The company delivers end-to-end project management from design and consultation through installation to ongoing maintenance and 24/7 emergency service.

Product overview

Koster Elektrotechniek B.V. is a full-service electrical contracting company offering comprehensive installation, maintenance, and repair services for residential and commercial properties since 1992. The portfolio includes core electrical installations, air conditioning (Mitsubishi Electric, Daikin), data cabling (Cat. 5e/6), fire alarm systems (NEN-compliant), intrusion alarms (Guardal, Samsung, Siemens), access control (Paxton), emergency lighting, and sustainability solutions including solar panels, home batteries, EV charging stations (Easee), solar carports, and smart home automation (KNX standard). The company positions itself as a total concept provider, offering complete solutions from design through installation to maintenance.

Differentiator

Problem solved

Functional benefit

Products and services

• Elektrotechnische installaties (Electrical Installations)

Quantifiable outcome

• Energy savings up to 80% on lighting with LED and daylight-dependent control systems
• +2 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core, supporting and minor.

• Mr. Elektrisch B.V.coreStrategic or Co-development PartnerStrategic partnership for sustainable energy solutions. Mr. Elektrisch specializes in EV charging infrastructure and solar energy. Together they realize advanced systems including charging infrastructure and solar energy to prepare organizations for the future.
• H4 LeasesupportingChannel Partner/ Reseller/ DistributorMost flexible leasing company in the Netherlands for vehicle leasing. Partnership enables flexible EV charging solutions for customers.
• SEKO ScheepselektrotechniekminorOthersSEKO specializes in marine electrical installations, offering experience and certified services for efficiency, comfort and safety on vessels.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Unica: Dutch multi-disciplinary technical services group covering electrical, fire safety, security, data infrastructure, and energy solutions. Comparable service portfolio to Koster across commercial and residential segments, with broader geographic coverage.
• Kuijpers: Major Dutch technical services provider delivering electrical, climate, and sustainable energy installations for commercial buildings. Comparable in sustainability and electrical scope, but operates at national scale versus Koster's regional presence.
• Homij: Established Dutch technical installer serving commercial and industrial clients with electrical, mechanical, and building services. Larger scale than Koster but overlapping service portfolio in electrical, fire safety, and security installations.
• Croonwolter&dros: Large Dutch technical installer with deep electrical, security, fire safety, and building automation capabilities across commercial and industrial markets. Overlaps with Koster in fire alarm, access control, and electrical installations but operates at substantially larger scale.
• Equans Nederland: Formerly ENGIE Services, Equans is a large Dutch provider of technical installations, energy solutions, and facility services. Overlaps with Koster in electrical, sustainability, and security installations for commercial and residential customers, but at much larger scale.
• BAM Bouw en Techniek: Division of Royal BAM Group delivering integrated building technical installations including electrical, fire safety, security, and sustainable energy systems. Comparable offering within construction projects, but bundled with larger general contracting capability.
• Spie Nederland: Dutch arm of the European technical services group Spie, providing electrical, HVAC, fire safety, and security installations. Comparable technical services offerings to Koster across commercial buildings, though at significantly larger scale.

Direct peers

• Van Dorp Installateurs: Dutch technical installer providing electrical, climate, security, and building automation solutions across residential, commercial, and industrial segments. Directly comparable offering breadth and KNX/smart-building capabilities to Koster.
• Van den Pol Elektrotechniek: Dutch mid-sized electrical contractor offering electrical installations, data cabling, fire safety, and security systems for commercial and residential customers. Closely comparable in service mix and customer profile to Koster, although operating at a larger regional scale.

Others

• Techniek Nederland (trade association): Dutch trade association for the technical installation sector of which Koster is a member. Not a competitor but an ecosystem/peer reference point representing the broader Dutch installer community Koster operates within.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/koster-elektrotechniek

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Koster Elektrotechniek B.v.