What Alcomij does

Alcomij BV is a Netherlands-based designer and manufacturer of greenhouse construction systems, founded in 1969 as a joint venture between Hordijk and Voskamp & Vrijland and operating today as a wholly-owned subsidiary of the 4th-generation family-owned Koninklijke Hordijk Groep. From its 's-Gravenzande headquarters in the Westland horticulture heartland, the company produces steel greenhouse structures, aluminum roof and facade systems (under the proprietary Optinova® brand), the patented ClearSpan multi-screen greenhouse concept, solar-integrated roof systems with photovoltaic mounting, and aluminum stacking wagons (veilingkarren) used in horticultural logistics — all manufactured in a 20,000 m² automated facility and engineered using TNO-developed branch-specific software (CASTA, Glazen Stad), 3D CAD, and Finite Element Analysis.

The company's revenue model is project-based B2B manufacturing, with quotations prepared by an in-house Sales Engineering team and orders fulfilled through direct sales to greenhouse builders, turnkey greenhouse suppliers, and (indirectly via these partners) commercial growers across Europe, North America, and the Middle East. Pricing is not publicly disclosed and is configured per project using specialized calculation software. The go-to-market is consultative and event-driven, anchored by participation in Fruit Logistica Berlin and GreenTech Amsterdam, supported by a digital presence (website, LinkedIn, Instagram, Facebook) and employer branding.

Alcomij holds ISO 9001, BRL 8001/HORTIQ, EN-1090, and NEN-EN-ISO 9606 certifications, and its products are designed for backward compatibility with legacy Euronova and Alkupro systems, supporting both new construction and modernization projects. With 51-100 employees, the company is part of a larger diversified industrial group (Hordijk: 400+ employees, ~€100M group revenue) and maintains a leadership transition at the parent level effective January 1, 2026, with Martine Hordijk and Marco Koese assuming joint CEO responsibilities.

Name

Alcomij

Legal name

Alcomij BV

Website

https://alcomij.nl

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

51–100 employees

Short description

Alcomij designs and manufactures aluminum greenhouse roof systems, steel greenhouse structures, the patented ClearSpan multi-screen concept, solar-integrated roofs, and horticultural stacking wagons from its automated Dutch facility, supplying greenhouse builders, turnkey suppliers, and growers across Europe, North America, and the Middle East.

Ownership category

akta.pro rank

Product category

Greenhouse Construction Systems

NAICS

Other Aluminum Rolling, Drawing, and Extruding (331318), Metal Window and Door Manufacturing (332321)

SIC

Metal Doors, Sash, Frames, Moldings & Trim (3442), Miscellaneous Furniture & Fixtures (2590)

akta.pro primary industry

Greenhouse Structures & Construction (Frames, Glazing, Benches) (AFAAAHAA)

akta.pro secondary industries

Metal Roofing Systems (IMADAFAB), Skylights & Roof Windows (IMADAIAD)

Keywords

• Greenhouse construction systems
• Aluminum roof systems
• Solar greenhouse solutions
• Horticultural stacking carts
• Greenhouse engineering services

Headquarters

HQ city

's-gravenzande

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Manufactured greenhouse construction products and systems: Alcomij designs, engineers, and manufactures steel greenhouse structures, aluminum greenhouse roof and facade systems, solar greenhouse systems, and stacking wagons (veilingkarren) for greenhouse builders, turnkey suppliers, and growers globally. Revenue is generated through the sale of custom-manufactured components and systems, typically as part of larger greenhouse construction projects. The company maintains full control over quality, delivery reliability, and innovation through in-house production.
2. Engineering and technical support services: Alcomij provides engineering services from design through to realization, supporting greenhouse builders with technical calculations, 3D design, and project-specific engineering support. Engineering is bundled with product supply rather than sold as a standalone service.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels8 records

Core offering

Alcomij designs, engineers, and manufactures steel greenhouse constructions and aluminum greenhouse roof, facade, and logistics systems at a 20,000 m² automated facility in 's-Gravenzande, Netherlands. Its portfolio centers on the proprietary Optinova® modular aluminum roof system, the patented ClearSpan multi-screen greenhouse concept, solar-integrated roof systems, and aluminum stacking wagons (veilingkarren) for horticultural logistics, supplied to greenhouse builders, turnkey suppliers, and growers worldwide.

Product overview

Alcomij offers a portfolio of specialized greenhouse construction products and systems, centered around its proprietary Optinova® aluminum greenhouse roof system (with multiple sub-components including watertight gutter connections, VGS glass sealing, storm-resistant glazing bar connections, column-gutter connections, flexible glazing bar options, and snow-resistant ridge blocks). The company also provides the ClearSpan patented greenhouse concept for multi-screen configurations, the Caeli™ climate homogenization brand, production greenhouses, solar greenhouse roof systems integrating photovoltaic panels, and aluminum stacking carts for horticulture logistics. Additionally, Slimline facade systems complement the roof offerings. All products are engineered, manufactured, and shipped from the company's facilities in the Netherlands.

Differentiator

Problem solved

Functional benefit

Brands

• Optinova®: Patented greenhouse roof system with maximum stability, safety and light transmission for modern horticulture. Features components including watertight gutter connection, VGS glass sealing, flexible glazing bar options, storm-resistant ridge block, and storm-resistant glazing bar connection.
• ClearSpan
• Caeli™

Products and services

• Optinova® Greenhouse Roof System (Kasdeksysteem)
• ClearSpan Greenhouse Concept
• Solar Greenhouse Roof System (Solar Kasdeksysteem)
• Production Greenhouses (Productiekassen)
• Aluminium Stacking Wagons (Stapelwagens / Veilingkarren)
• Caeli™ Climate Solutions

Quantifiable outcome

• Up to ~2.5% more light transmission in 4-screen configuration (ClearSpan concept, compared to standard solution per IDT calculation method)
• +3 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Steur AdviescoreStrategic or Co-development PartnerSteur Advies collaborated with Alcomij and Van Amelsvoort Kassenbouw to develop the ClearSpan greenhouse concept. Steur Advies contributed horticultural and cultivation technical expertise, including light and climate calculations, validating the concept's benefits for growers using multiple screens.
• Van Amelsvoort KassenbouwcoreStrategic or Co-development PartnerVan Amelsvoort Kassenbouw partnered with Alcomij and Steur Advies to develop the ClearSpan concept. As a greenhouse builder, Van Amelsvoort provides practical construction and installation perspective, validating the constructability and benefits of the ClearSpan approach.
• KiwaminorOthersKiwa conducts periodic audits for Alcomij's ISO 9001 and BRL 8001 certifications. Kiwa's knowledge of both ISO 9001 and BRL 8001, combined with their experience in horticulture, makes audit conversations well-aligned with Alcomij's practice.
• Caeli™coreTechnology or IntegrationCaeli™ (a brand of Alcomij) develops climate solutions for greenhouse horticulture — specifically systems that homogenize and dehumidify greenhouse climate, preventing moisture problems, reducing disease risk, and optimizing growing conditions. Alcomij and Caeli™ were co-presented at GreenTech Amsterdam 2025 as integrated offerings. Caeli™ is a sister brand operating within the Alcomij/Hordijk group.
• Koninklijke Hordijk Groep (Hordijk Holding)coreOthersAlcomij is a wholly-owned subsidiary of Koninklijke Hordijk Groep, a 4th-generation family business with 400+ employees and ~€100 million revenue. Hordijk provides corporate governance, shared services, and a network of industrial sister companies (thermoforming packaging, Airpop packaging, injection molding, greenhouse systems, and logistical growing solutions).
• Miko-Hordijk GmbHminorChannel Partner/ Reseller/ DistributorA joint sales organization in Germany between Hordijk Holding and Miko-Pac (Belgium), distributing Hordijk group products in the German market. Alcomij products may benefit from this channel as part of the Hordijk product family.

Scale indicators8 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Certhon: Dutch turnkey greenhouse builder also based in the Westland region. Directly comparable as a high-tech greenhouse construction company serving growers internationally, though Certhon operates at the full turnkey level rather than as a component supplier like Alcomij.
• Van der Hoeven Horticultural Projects: Dutch-based turnkey high-tech greenhouse builder with global project execution. Comparable as a Netherlands-rooted greenhouse construction specialist competing in the same international project market, although Alcomij operates at the component level rather than full turnkey delivery.
• KUBO Greenhouse Projects: Dutch turnkey greenhouse builder with a strong focus on sustainable and high-tech greenhouse projects globally. Directly comparable as a peer in the Dutch high-tech greenhouse construction cluster serving international growers.
• Dalsem: Dutch greenhouse construction company specializing in high-tech greenhouse projects for vegetables, floriculture, and medicinal cannabis. Directly comparable as a Netherlands-based greenhouse builder targeting similar international grower segments.
• Ridder Group: Dutch provider of greenhouse screens, climate systems, and horticultural technology. Overlaps with Alcomij in greenhouse system integration (especially screen/climate solutions like Caeli™), though Ridder is primarily a climate/screen specialist rather than aluminum roof systems.
• Harnois Industries: Canadian manufacturer of commercial and institutional greenhouses with growing international reach. Comparable as a peer manufacturer of greenhouse structures, though with a different geographic base and product mix.
• Rough Brothers / Nexus Greenhouse Systems: North American greenhouse design, engineering, and manufacturing company. Comparable as a peer greenhouse structures manufacturer serving commercial growers, though with a primarily US-focused customer base.
• Haygrove: UK-based grower and manufacturer of field-scale and substrate tunnels/greenhouses with global operations. Comparable as an international specialist greenhouse manufacturer serving commercial growers, though focused more on tunnels than aluminum Venlo-style roof systems.

Broad incumbents

• Priva: Dutch global leader in climate and process control systems for horticulture and buildings. Comparable as a Dutch incumbent in the greenhouse technology ecosystem where Alcomij operates, though Priva specializes in climate control software/hardware rather than structural systems.

Regional players

• Royal Brinkman: Dutch supplier of horticultural inputs, equipment, and greenhouse supplies with strong international distribution. Comparable as a Dutch horticulture-sector supplier serving growers, though operating in distribution rather than as a greenhouse structures manufacturer.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/alcomij-bv
• Instagraminstagram.com/alcomijbv
• Xx.com/Alcomij

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

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 Alcomij