Rejlers

What Rejlers does

Rejlers AB is a Nordic-headquartered engineering design and consulting firm, founded in 1942 and operating across Sweden, Finland, Norway, and Abu Dhabi with 1001-5000 employees. Its legal entity is Rejlers AB in Sweden, with operating sub-brands including Rejlers Suomi (Finland), Rejlers Norway, and Rejlers Abu Dhabi; the Mikkeli, Finland address is the principal Finnish office location. The firm serves enterprise clients in energy, industry, infrastructure, construction and real estate, telecom, and management consulting, organized as six service lines (Energy, Industry, Infrastructure and Environment, Construction and Real Estate, Telecom Networks and Security, and Management Consulting) and three cross-cutting themes (Energy Transition, Renewing Industry, Sustainable Society). Capabilities span clean energy production, transmission and storage, industrial automation and decarbonization, building design and HVAC, infrastructure planning, and environmental consulting.

The core technology is multi-disciplinary technical consulting rather than a software or platform product; Rejlers delivers engineering design, planning, project management, and advisory services supported by in-house expertise. The firm has no public API or SDK, no proprietary AI models or patents, and operates a content platform called Rejlers Play that publishes videos on AI, leadership, and industry transformation. Its revenue model is professional services: project-based and consulting engagements sold directly to enterprise clients across its target sectors, with Mölnlycke cited as a reference customer for EHS, process, and HVAC work. Distribution is direct enterprise field sales through regional offices, supplemented by digital marketing, social media (LinkedIn, Facebook, Instagram, YouTube, Threads), and PR; pricing is not publicly disclosed and is typically scoped per project.

Rejlers' strategic posture emphasizes the green transition, and it has used tuck-in M&A to extend capability — notably the December 2022 acquisition of ClimaConsult Finland Oy, adding indoor air, energy efficiency, and ecological building solutions to its construction practice. Mid-2026 leadership changes (new HR and Communications Director, new head of electrical design in construction) suggest continued organizational investment, while the Abu Dhabi office represents its only non-Nordic footprint. No revenue, headcount time-series, or backlog figures are disclosed in the available material.

Name

Rejlers

Legal name

Rejlers AB

Website

https://rejlers.fi

Company type

Private

Founded year

1942

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Rejlers AB is a Nordic engineering design and consulting firm operating in Sweden, Finland, Norway, and Abu Dhabi, providing multi-disciplinary technical services in energy, industry, infrastructure, construction, telecom, and management consulting to enterprise clients, with an emphasis on the green transition.

Ownership category

akta.pro rank

Headquarters

HQ city

Mikkeli

HQ country

Finland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Technical Consulting Services: Professional consulting services for technical design, planning, and implementation across energy, industry, infrastructure, and construction sectors. Revenue generated through project-based engagements and ongoing consulting contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Rejlers is a technical engineering design and consulting company delivering multi-disciplinary professional services across energy, industry, infrastructure, construction, and telecommunications sectors. The firm supports clients through project-based engagements covering energy transition, industrial automation, decarbonization, building design, and management consulting, operating from offices in Finland, Sweden, Norway, and Abu Dhabi.

Product overview

Rejlers is a technical engineering design and consulting company offering services as an integrated portfolio organized around five service lines (Energy, Industry, Infrastructure and Environment, Construction and Real Estate, Telecom Networks and Security, and Management Consulting) plus three cross-cutting focus areas (Energy Transition, Renewing Industry, and Sustainable Society). The company positions itself as 'Home of the learning minds' and provides expert technical consulting across energy, industry, infrastructure, and construction sectors. The service offering functions as a unified platform combining multi-disciplinary engineering expertise with project delivery capabilities. Rejlers also operates Rejlers Play, a content platform featuring leadership and technology discussions.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Sector Services
• Industry Sector Services
• Infrastructure and Environment Services
• Construction and Real Estate Services
• Telecom Networks and Security Services
• Management Consulting
• Energy Transition Services
• Renewing Industry Services
• Sustainable Society Services

Named customers1 record

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• ClimaConsult Finland Oystrategic acquisitionStrategic or Co-development Partner · 14 December 2022Rejlers Finland acquired ClimaConsult Finland Oy, a company specializing in indoor air climate, energy efficiency, and ecological solutions in buildings. This strategic acquisition aimed to enhance Rejlers' expertise in building design and sustainable technical services in Finland.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• WSP Global: Canadian-headquartered global professional-services firm covering environment, energy, infrastructure, buildings, and industry at much larger scale — competes for the same Nordic and European engineering mandates as Rejlers but with a vastly broader geographic and capability footprint.

Direct peers

• AFRY (ÅF): Swedish engineering and design consultancy (formed via merger of ÅF and Pöyry) with deep Nordic presence across energy, industry, infrastructure, and process industries — a direct Nordic peer with overlapping green-transition and industrial-transformation offerings.
• COWI: Denmark-based international consulting group specializing in engineering, environmental science, and economics across infrastructure, energy, and industry — directly comparable Nordic peer with similar cross-vertical engineering consulting model.
• Sweco AB: Stockholm-headquartered European engineering, design, and consulting firm operating across water, energy, industry, infrastructure, and urban development — directly comparable to Rejlers' Nordic multi-vertical engineering consultancy model, though at materially larger scale.
• Etteplan: Finnish engineering and embedded software services firm serving industrial equipment manufacturers with design, automation, and digital solutions — directly comparable to Rejlers' industrial automation, digitalization, and technical design services.
• Ramboll Group: Denmark-based global engineering, architecture, and consultancy firm with strong Nordic presence across energy, environment, infrastructure, and buildings — closely comparable service portfolio and customer base to Rejlers.
• Sitowise Group: Finnish-listed expert services company in the built environment covering infrastructure, digital solutions, and construction consulting — a closely comparable Nordic (Finland) peer competing head-to-head with Rejlers in building design and infrastructure.

Regional players

• Eltel Group: Nordic/Infrastructure-services company specializing in power and communication networks — adjacent peer overlapping with Rejlers' telecom networks and electricity transmission/distribution service lines, primarily Nordic operating footprint.
• Norconsult: Norway's largest interdisciplinary engineering and architecture consultancy with services across buildings, transport, energy, and industry — closely comparable to Rejlers' Nordic engineering consultancy offering, focused on the Norwegian market.
• Multiconsult: Norwegian engineering consultancy covering buildings, transportation, energy, and industry — comparable in service mix to Rejlers but primarily focused on the Norwegian domestic market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@rejlersfinland
• Facebookfacebook.com/rejlersfinlandoy
• LinkedInlinkedin.com/company/rejlers
• Instagraminstagram.com/rejlersfinland

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Rejlers