De Kleijn Energy Consultants & Engineers

What De Kleijn Energy Consultants & Engineers does

De Kleijn Energy Consultants & Engineers is a privately held Dutch engineering and consultancy firm headquartered in Deursen-Dennenburg, Netherlands, that delivers energy efficiency, waste heat recovery, and process optimization services to industrial clients across Europe, Australia, Brazil, and South Africa. The firm's technical practice centers on industrial heat pump integration, Mechanical Vapour Recompression (MVR), heat studies, ISO 50001 energy management system implementation, and full-scope engineering from concept through commissioning, with notable demonstrated outcomes such as a fully natural gas-free chocolate factory (Delicia, 2025) and large-scale MVR deployment at McCain Foods' Ballarat facility in Australia. Approximately 19 HBO/WO-educated consultants and engineers execute project-based engagements for an enterprise customer base anchored in food and beverage, confectionery, bakery, and medical nutrition manufacturing, with 175 clients served over 31 years.

The firm operates a sales-led, consultative go-to-market in which project scope is defined through exploratory conversations, followed by proposals and project execution; it generates revenue through three professional services streams: energy consultancy (surveys, feasibility and heat studies, process optimization), engineering (principle and detail design, tendering, project support), and project management with commissioning. The company holds ISO 9001:2015 certification, is independent of suppliers, products, and installers, and runs thought-leadership initiatives including the Industrialheatpumps.nl platform and the Dutch FlexScan electricity analysis service offered jointly with Energy-IO. Geographic expansion is evident in the South Africa-focused service line, supported by two online calculators tied to that country's Phase 2 (2026-2030) carbon tax regime.

Name

De Kleijn Energy Consultants & Engineers

Legal name

De Kleijn Energy Consulting B.V.

Website

https://energyconsulting.nl

Company type

Private

Founded year

2004

Operating status

Operating

Headcount range

11–50 employees

Short description

De Kleijn Energy Consultants & Engineers is a privately held Dutch engineering and consultancy firm that delivers industrial energy efficiency, waste heat recovery, heat pump integration, and process optimization services to enterprise manufacturers across food, confectionery, and medical nutrition sectors in Europe, Australia, Brazil, and South Africa.

Ownership category

akta.pro rank

Product category

Industrial Energy Consulting & Engineering

NAICS

Engineering Services (54133), Environmental Consulting Services (541620)

akta.pro primary industry

Energy Systems & Power Engineering Consulting (BPAHAIAG)

akta.pro secondary industry

Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ)

Keywords

• Industrial energy consulting
• Waste heat recovery
• Heat pump integration
• Energy efficiency engineering
• Industrial process optimization

Headquarters

HQ city

Dennenburg

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Consultancy Services: Technical consultancy services for industrial companies focused on energy savings. Services include energy surveys (EED compliance), ISO 50001 implementation, feasibility studies, heat studies, process optimization, ventilation surveys, refrigeration surveys, technical inspections, and measurement campaigns. Revenue is generated through project-based consulting engagements.
2. Engineering Services: Full engineering services including principle design, detail design, technical specifications, tendering support, and technical project support. Services span utilities, climate installations, and process equipment. Revenue derived from engineering project engagements from concept through commissioning.
3. Project Management and Commissioning: Project management support during installation realization, commissioning services for new installations including tuning, testing, training, and documentation (as-built drawings, manuals).

Go-to-market motion2 records

Distribution channels1 record

Marketing channels6 records

Core offering

De Kleijn Energy Consultants & Engineers provides technical energy consultancy and engineering services for industrial companies, focused on reducing energy consumption, costs, and CO2 emissions. Services span energy surveys, feasibility studies, heat studies, process optimization, ventilation and refrigeration surveys, technical inspections, ISO 50001 implementation, and FlexScan electricity analysis, alongside full engineering design from concept through commissioning of utilities, heat pumps, and waste heat recovery systems.

Product overview

De Kleijn Energy Consultants & Engineers is a consultancy and engineering firm offering a portfolio of energy advisory and design services for industrial companies. The core offering spans two service lines: Consultancy (energy surveys, feasibility studies, heat studies, process optimization, ventilation/refrigeration surveys, technical inspections, measurement campaigns, ISO 50001 energy management system support, and FlexScan electricity profile analysis) and Engineering (principle/detail design, technical specifications and tendering, project support, and commissioning). Standalone online tools include a Carbon Tax Calculator and a Total Energy Savings & Tax Impact Calculator targeting South African users. The company is independent of suppliers, products, or installers and does not offer a software platform or API.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Surveys
• ISO 50001 Energy Management System Support
• Feasibility Studies
• Heat Studies
• Process Optimization
• Ventilation Survey
• Refrigeration Survey
• Technical Inspection
• Measurement Campaign
• FlexScan
• Principle Design (Global Design)
• Detail Design
• Technical Specifications and Tendering
• Technical Project Support
• Project Management and Commissioning
• Carbon Tax Calculator
• Total Energy Savings & Tax Impact Calculator

Quantifiable outcome

• Client achieved over €1 million annual savings with 1.3 year average payback through energy audits and implemented measures
• +5 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• Energy-IOcoreTechnology or IntegrationDe Kleijn and Energy-IO partner to offer FlexScan services, a powerful electricity consumption analysis solution. De Kleijn provides process analysis and solution design based on technical expertise and analytical capabilities, while Energy-IO handles data collection and analysis through smart data solutions to make energy consumption transparent.
• Industrialheatpumps.nlminorOthersIndustrialheatpumps.nl is an initiative by De Kleijn focused on promoting and sharing knowledge about industrial heat pump applications. This is a company initiative rather than a partnership.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Arcadis: Global design and consultancy firm with a dedicated Climate, Energy and Sustainability practice for industrial customers. Competes with De Kleijn on industrial energy efficiency and decarbonization mandates but at much greater scale and across many other engineering domains.
• Stantec: North American/European engineering consultancy with an Industrial Energy and Decarbonization practice serving food, beverage and process manufacturers. Comparable to De Kleijn on industrial energy and heat recovery work for similar end customers, but with much broader geographic and service scope.
• DNV: Norwegian energy and maritime assurance/consulting group with deep industrial energy and renewables advisory practices. Comparable to De Kleijn as a non-vendor energy advisor to industrial clients, but operates globally and across many adjacent verticals.
• Ramboll: Danish engineering, design and consultancy company with a global Energy practice covering industrial energy efficiency and decarbonization. Comparable to De Kleijn on industrial energy advisory but with much broader engineering capabilities and international footprint.
• Witteveen+Bos: Dutch engineering and consultancy firm with strong industrial-process, energy and water expertise. Comparable because it serves Dutch/European industrial clients on process and energy engineering projects, but at significantly larger scale and breadth.
• Sweco: European engineering and design consultancy with industrial energy and sustainability services. Comparable because it provides energy optimization, heat and process engineering to industrial customers, but as part of a much wider infrastructure and water portfolio.
• Royal HaskoningDHV: Large Dutch engineering consultancy with an established energy and sustainability practice serving industrial clients across Europe. Comparable to De Kleijn because it sells energy optimization, heat/network and industrial decarbonization advisory, but it operates as a broad multi-disciplinary incumbent rather than a focused specialist.

Direct peers

• Carbon Trust: UK-based independent advisory firm focused exclusively on energy efficiency and decarbonization for businesses, including industrial mandates. Closest specialization match to De Kleijn — independent, supplier-free, energy-only advisory — though it operates from a larger UK/global base.
• Anthesis Group: Independent sustainability consultancy with deep energy and decarbonization practices for industrial clients. Comparable to De Kleijn as a specialist (rather than diversified engineering) advisor focused on energy efficiency, carbon and EHS outcomes.
• EcoAct: European carbon and energy consultancy serving industrial corporates on energy efficiency, carbon strategy and decarbonization roadmaps. Directly comparable to De Kleijn on energy-efficiency advisory for industrial clients, though typically operating at a slightly larger scale and with a stronger carbon/regulatory focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/de-kleijn-energy-consulting-b-v-

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 De Kleijn Energy Consultants & Engineers