El-Installasjon

What El-Installasjon does

GK Gruppen AS is a privately held Nordic technical contractor founded in 1964 and owned by the Karlsen family, delivering integrated technical building solutions across five core disciplines: ventilation, electrical systems, plumbing, refrigeration and heat pumps, and building automation. The group operates through wholly-owned subsidiaries in Norway (GK Norge AS), Sweden (Gunnar Karlsen Sverige AB, headquartered in Solna), and Denmark (GK Danmark A/S, headquartered in Odense), with 14+ regional offices across Norway and additional locations in Sweden and Denmark providing nationwide service coverage. Notable proprietary technology includes Smart Digital Driftsstøtte (SDD), a digital monitoring and optimization service that analyzes existing building technical systems to detect deviations and reduce operating costs, and GK Cloud, a cloud-based building management platform that formalizes a recurring digital-services layer on top of the traditional install base.

The business operates two segments: a residential/B2C line delivering plumbing, electrical, HVAC, solar, water-heater, EV-charger and 24/7 emergency plumbing (Rørvakt) services through local offices, and an enterprise/B2B line serving healthcare (Bærum sykehus, Solsiden healthcare center via Consto partnership, Haukeland), higher education (University of Bergen), public infrastructure (Vikingtidsmuseet, Statsbygg, Bergen kommune), hospitality (Scandic, Radisson Blu), and high-rise residential (Mjøstårnet) customers. Revenue is generated through fixed-price project contracts (e.g., 161M NOK Solsiden, 60M NOK Bærum sykehus, 48M NOK Vikingtidsmuseet), multi-year frame agreements (8-year, 10M NOK/year at UiB), recurring service and maintenance contracts, and subscription-based digital operations support. Distribution relies on direct enterprise sales and local office networks for residential, with marketing across the corporate website, LinkedIn, Facebook, Instagram, and YouTube. A 24/7 Rørvakt plumbing line supports consumer retention.

Note on data sourcing: the firmographics header in the supplied material identifies the entity as "El-Installasjon" with 1–10 employees and the URL https://el-installasjon.no/. The detailed source blocks instead describe GK Gruppen AS with multi-country operations, dozens of regional offices, and senior management across multiple regions. These appear to be separate entities; this analysis is grounded in the substantive GK evidence, and the firmographic mismatch is flagged but not reconciled.

Name

El-Installasjon

Legal name

GK Gruppen AS

Website

https://el-installasjon.no

Company type

Private

Founded year

1964

Operating status

Operating

Headcount range

1–10 employees

Short description

GK Gruppen AS is a privately held Nordic technical contractor founded in 1964, delivering integrated ventilation, electrical, plumbing, refrigeration, and building automation services across Norway, Sweden, and Denmark for residential and enterprise customers.

Ownership category

akta.pro rank

Product category

Building Technical Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822), Computer Systems Design and Related Services (54151), Electronic and Precision Equipment Repair and Maintenance (811210), Solar Electric Power Generation (221114)

SIC

Electrical Work (1731), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Services-Computer Integrated Systems Design (7373), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB)

akta.pro secondary industry

Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ)

Keywords

• Electrical installation services
• Plumbing services
• Ventilation installation
• Building automation systems
• Heat pump installation

Headquarters

HQ city

Oslo

HQ country

Norway

HQ region

Europe

Offices13 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Revenue model

1. Installation and Project Services: GK generates revenue through large-scale technical installation projects for new buildings and rehabilitation work. Projects include complete technical packages covering ventilation, electrical, plumbing, refrigeration, and building automation. Revenue is project-based with significant contract values (e.g., 161 million NOK for Solsiden healthcare center, 60 million for Bærum sykehus).
2. Service and Maintenance Contracts: Ongoing service agreements with customers for maintenance, monitoring, and support of technical building systems. Includes 24/7 emergency services (rørvakt) and scheduled maintenance programs.
3. Residential Services: Plumbing, electrical, and HVAC services to private homeowners including repairs, installations, and upgrades.
4. Smart Digital Driftsstøtte (Digital Operations Support): Subscription-based digital monitoring and optimization service for building technical systems, providing continuous oversight and energy savings.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

El-Installasjon, associated with the GK technical contractor group operating from el-installasjon.no, delivers integrated technical building services including ventilation, electrical, plumbing, refrigeration/heat pumps, and building automation for both residential and enterprise customers. The company also provides solar cell installations, leak detection systems, water heaters, kitchen water filtration, and 24/7 plumbing emergency services, supported by a Smart Digital Operations Support (Smart Digital Driftsstøtte) platform for continuous monitoring and energy optimization.

Product overview

GK is a comprehensive technical contractor offering integrated building technology services across five core areas: ventilation (ventilasjon), building automation (byggautomasjon), electrical (elektro), plumbing (rør), and refrigeration/heat pumps (kulde og varmepumpe). The company operates both as a service provider for residential customers (through GK Privat) and as a total technical contractor for commercial projects. Key service offerings include smart digital operational support (smart digital driftsstøtte) for continuous building monitoring, solar cell installations (solcelleanlegg), and 24/7 plumbing emergency services (rørvakt). GK also provides specialized products including water leak detectors (lekkasjestoppere), water heaters, and kitchen water filtration systems. The portfolio is complemented by GK Cloud, a digital platform for building management and monitoring.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Over 1.2 million NOK in energy savings for Scandic Lerkendal hotel since January 2025
• +5 more outcomes

Named customers9 records

Segments3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• ConstocoreStrategic or Co-development Partner · 2 July 2026GK entered contract with Consto for total technical delivery to Solsiden bo- og aktivitetssenter in Mo i Rana. The project is a collaborative effort across GK's Midt- og Nord-Norge organization. Project value is approximately 161 million NOK.

Scale indicators13 records

Recent moves7 records

Expansion highlights6 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@gk-norge
• Facebookfacebook.com/GKNorge
• LinkedInlinkedin.com/company/el-installasjon
• Instagraminstagram.com/gk_gruppen

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 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 El-Installasjon