What Spangenberg and Madsen, Radgivende Ingeniorfirma does

Spangenberg & Madsen Rådgivende Ingeniørfirma A/S (S&M) is a Danish technical engineering consultancy founded in 1905, headquartered in Albertslund with additional offices in Aarhus, Næstved, and an on-site presence at Copenhagen Airport (Kastrup). The firm delivers specialized consulting across four business segments — Byggeri (buildings), Infrastruktur (infrastructure including rail and airports), Industri (industry), and Forsyning (utility supply) — covering electrical systems from low voltage up to 400 kV, HVAC/ventilation, indoor climate and energy, fire safety (third-party certified), security/safety, drainage/LAR, sustainability/ESG, and client advisory and project management. S&M serves both public sector clients (municipalities, regions, Banedanmark) and private clients (housing associations, developers, contractors, hotel operators), executing its work as main consultant (totalrådgiver) or sub-consultant (underrådgiver) under project-based, quote-based engagements, framework agreements, and competitive tenders, with multi-year contracts being the typical billing cadence.

The firm's underlying technology stack is built on Autodesk Revit-based BIM 3D modeling, supplemented by PowerFactory for power-grid simulation and Cablemanager (PC|SCHEMATIC) for cable routing. A notable proprietary asset is an in-house developed Revit-to-CableManager plug-in (released July 2024) that automatically extracts cable routing data (trays, ladders, conduit, counts, dimensions, project phase) and transfers it into Cablemanager, eliminating prior manual double-entry. S&M holds formal certifications that gate participation in regulated Danish public tenders, including third-party fire safety consultancy (brandrådgiver til 3. part), KK3 structural engineering, and DGNB sustainability certification, with senior engineers carrying decades of field experience.

Commercially, S&M is a privately held Danish A/S (private limited company) owned and led by CEO Michael Søgaard Rasmussen following a 2012 generational handover in which the Greenland operations were sold. In July 2024 the firm expanded by acquiring the majority of assets of Dansk Energi Management A/S (DEM), adding approximately 20 new colleagues and a global energy management capability; DEM continues to operate as a wholly-owned subsidiary. Revenue derives entirely from professional services (technical consulting fees), with no software-as-a-service or productized revenue stream. Customer concentration is anchored by a 25+ year continuous relationship with Copenhagen Airports (CPH) alongside diversified public-sector and private-sector project work, and the firm's geographic footprint now spans Denmark and Greenland (with recent re-entry into Greenland via Nuuk, Ilulissat, and Qaqortoq airport projects).

Name

Spangenberg and Madsen, Radgivende Ingeniorfirma

Legal name

Spangenberg & Madsen A/S

Website

https://sogm.dk

Company type

Private

Founded year

1905

Operating status

Operating

Headcount range

101–250 employees

Short description

Spangenberg & Madsen is a Danish engineering consultancy, founded in 1905, that provides specialized technical consulting in electrical, HVAC, fire safety, security, and sustainability for buildings, infrastructure, industry, and utilities, serving public and private clients across Denmark and Greenland.

Ownership category

akta.pro rank

Product category

Engineering Consulting Services

NAICS

Architectural, Engineering, and Related Services (5413), Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Building Information Modeling (BIM) & Digital Design Services (BPAHAKAK)

akta.pro secondary industries

Circularity Consulting & Program Management (EPR, Design-for-Circularity, LCA) (EUAIANAH), Process Safety & Major Hazard Risk Management (PSM) (BPAHAJAE)

Keywords

• Electrical engineering consulting
• HVAC design services
• Fire safety consulting
• Building information modeling
• Sustainability engineering

Headquarters

HQ city

Albertslund

HQ country

Denmark

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Technical Consulting Services: S&M generates revenue through professional engineering consulting services for technical installations across building, infrastructure, industry, and utility projects. Services are billed as project-based fees, typically under long-term client relationships and frameworks with both public and private clients.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Spangenberg & Madsen is a Danish consulting engineering firm that provides multi-disciplinary technical advisory services for electrical, HVAC/ventilation, fire safety, security, drainage, and sustainability installations in buildings, infrastructure, industry and utility projects. Services span the full project lifecycle from concept and pre-qualification through detailed design, BIM-based 3D modeling, project management and as-built documentation for both private and public sector clients in Denmark and Greenland.

Product overview

Spangenberg & Madsen is a consulting engineering firm established in 1905 offering comprehensive technical advisory services. The company operates across four main segments: Byggeri (Construction), Infrastruktur (Infrastructure), Industri (Industry), and Forsyning (Utility Supply). Their service portfolio includes specialized technical consulting in electrical systems (low and high voltage), HVAC/ventilation, indoor climate and energy, fire safety consulting, security systems, drainage and rainwater management, sustainability consulting (including ESG, LCA, circular economy), building owner advisory and project management, procurement services, and railway technical installations. The firm utilizes BIM 3D modeling extensively and has developed proprietary tools including a Revit-CableManager plugin for cable infrastructure projects. Following the 2024 acquisition of Dansk Energi Management A/S, the company expanded to include energy management and global energy project capabilities through this subsidiary.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 57% CO2 savings achieved through circular office renovation using reused materials vs. new materials
• +2 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature1 record

Partnerships

Six partnerships are on record, tiered core and minor.

• Dansk Energi Management A/S (DEM)coreStrategic or Co-development Partner · 1 July 2024S&M acquired the majority of assets of Dansk Energi Management A/S following a reconstruction process. DEM continues to operate under its own brand (now a subsidiary). The acquisition brought approximately 20 new colleagues and expanded S&M's capabilities in energy management and global project delivery. Jørn Lykou continues as Global Business Director, with Heidi Kristiansen as department head for Global and Ole Svane Hansen as department head for Indland (Denmark).
• KJ GreenlandcoreStrategic or Co-development Partner · 1 January 2024S&M partners with KJ Greenland on the construction of new airports in Ilulissat and Qaqortoq, providing technical consulting for airport building installations. This partnership is part of a broader infrastructure initiative in Greenland.
• MT HøjgaardcoreStrategic or Co-development PartnerS&M partnered with MT Højgaard on the Nuuk Airport expansion project, providing technical consulting for electrical installations and fire safety. This project represented S&M's re-entry into the Greenland market after a pause.
• Team KHR (KHR Architecture, Rubow Arkitekter, Oluf Jørgensen Rådgivende Ingeniører, Opland Landskabsarkitekter)coreStrategic or Co-development PartnerS&M served as engineering consultant within the Team KHR consortium for the NRSH (New Forensic Psychiatric Center Sct. Hans) project. S&M led electrical, fire safety, and security disciplines, working closely with architects and landscape architects in the consortium.
• Torntoft & Mortensen and GPP Arkitekter A/SminorStrategic or Co-development PartnerS&M partnered with total contractor Torntoft & Mortensen and GPP Arkitekter for the construction of a movement institution and multi-hall for Horsens Municipality. Sweco Denmark served as sub-consultant for structural engineering.
• ISC Rådgivende Ingeniører and Zeso ArchitechtsminorStrategic or Co-development PartnerS&M acted as total consultant together with ISC Rådgivende Ingeniører (structural engineering sub-consultant) and Zeso Architechts (architectural sub-consultant) for the underground transformer station at Comfort Hotel, Copenhagen Airport.

Scale indicators5 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• COWI: COWI is a leading Danish-headquartered engineering consultancy with global operations in infrastructure, buildings, and energy. It competes with S&M on large Danish infrastructure and building projects and dwarfs S&M in scale and international reach.
• Ramboll: Ramboll is a global engineering, architecture, and consulting firm headquartered in Denmark. It is one of the largest players in Danish construction and infrastructure consulting, competing with S&M for major public and private tenders while offering a much broader portfolio including environment, health, and management consulting.
• Atkins (SNC-Lavalin): Atkins, part of SNC-Lavalin, is a global design, engineering, and project management consultancy with strong aviation and rail sector presence. It is comparable to S&M for airport and railway infrastructure consulting where S&M has deep Danish and Greenland experience.
• WSP: WSP is a global professional services firm with a large Nordic engineering practice. It competes with S&M for major Danish and Greenlandic infrastructure and building mandates and offers a much broader portfolio including advisory and environmental services.

Direct peers

• NIRAS: NIRAS is a Danish multidisciplinary engineering consultancy competing in building, infrastructure, and utilities. Its technical consulting scope in electrical, HVAC, fire safety, and sustainability is closely aligned with S&M's four-segment portfolio, making it a direct Nordic peer.
• Wessberg A/S: Wessberg is a Danish engineering consultancy offering electrical, plumbing, and HVAC design consulting. Its service focus closely matches S&M's core technical disciplines and Danish geographic footprint, making it a comparable domestic peer.
• AFRY (ÅF): AFRY is a Swedish-origin engineering and design consultancy with strong Nordic presence across buildings, infrastructure, and energy. It competes with S&M for cross-border and large Nordic tenders, particularly in energy, industrial, and infrastructure consulting.
• MOE A/S: MOE is a Danish engineering consultancy offering technical consulting across buildings, infrastructure, and environment. Its size, Danish market focus, and service portfolio in electrical, HVAC, and fire safety make it a close comparable to S&M.
• Sweco: Sweco Denmark is a major Nordic engineering consultancy with deep construction, infrastructure, and sustainability practices. It competes head-to-head with S&M for Danish public tenders, framework agreements, and multi-disciplinary building projects, and currently serves as a sub-consultant to S&M on the Horsens Municipality project.

Regional players

• Artelia Denmark: Artelia is a France-headquartered engineering consultancy with Nordic operations. It competes in Danish building and infrastructure consulting with similar multi-disciplinary capabilities, but operates primarily as a foreign entrant in the Danish market.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/spangenberg-madsen

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 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 Spangenberg and Madsen, Radgivende Ingeniorfirma