Linjemontage

What Linjemontage does

Linjemontage i Grästorp AB is a Sweden-headquartered electrical power infrastructure contractor founded in 1993 by Henrik Höglund, operating under the trade name Linjemontage. The company delivers transmission and distribution line construction, station construction and renovation, relay and control system integration (PLC, RTU, SCADA), power quality measurement and compensation, and recurring service and maintenance across voltage levels from 0.4 kV up to 400 kV domestically and 420 kV on completed Norwegian projects. It serves transmission system operators (notably Svenska Kraftnät), regional distribution network companies (Ellevio, E.ON, Jämtkraft, Luleå Kraft, Umeå Energi, Arise), and industrial customers (LKAB, Smurfit Kappa, Volvo Powertrains, GE) in Sweden and Norway.

The company operates through project-based construction services and ongoing service and maintenance contracts, pricing on a quote/procurement basis rather than published rates, and acts as general contractor, execution contractor, or subcontractor depending on project scope. Its technology stack is built around conventional HV electrical engineering rather than software: cable laying, splicing and termination up to 220 kV, substation construction through turnkey EPC, and integration of SCADA/relay protection for transformer monitoring, complemented by a branded LM-Power solution for harmonics and reactive power compensation.

Since 2019 Linjemontage has been owned by Indian infrastructure group Kalpataru Projects International Limited (85% in 2019, sole ownership in 2022), which provides access to in-house steel tower manufacturing for large transmission projects. Headcount sits in the 101–250 range, revenue crossed 1 billion SEK in 2020, and the company maintains 18 offices in Sweden plus 2 in Norway (Drammen regional HQ and Oslo, opened December 2024), supporting both local customer proximity and cross-border execution.

Name

Linjemontage

Legal name

Linjemontage i Grästorp AB

Website

https://linjemontage.se

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

101–250 employees

Short description

Linjemontage is a Sweden-headquartered electrical power infrastructure contractor (founded 1993, wholly owned by Kalpataru since 2022) delivering T&D line construction, station build/renovation, relay and SCADA integration, and power-quality services from 0.4 kV to 400 kV for Swedish and Norwegian TSOs, distribution network operators, and industrial customers via 18 Swedish and 2 Norwegian offices.

Ownership category

akta.pro rank

Product category

Electrical Power Infrastructure Services

NAICS

Electric Power Transmission, Control, and Distribution (22112), Electric Power Distribution (221122)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Substation Systems & Integration (EPC, Engineering, Protection, Commissioning) (IMAGAAAC)

akta.pro secondary industries

Testing, Commissioning & Energization Services (HV) (EUAEABAI), Turnkey distribution buildouts (feeders, reclosers, capacitor banks, line extensions) (EUADAKAK), Distribution Substations & Switching Stations (MV) EPC (EUAEACAC)

Keywords

• Power infrastructure services
• Transmission line construction
• Substation construction
• Power quality measurement
• Electrical network maintenance

Headquarters

HQ city

Grästorp

HQ country

Sweden

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Project-based Construction Services: Construction and installation services for power transmission and distribution infrastructure, substations, and industrial electrical systems. Projects range from complex EPC contracts to simpler renovation and service agreements.
2. Service & Maintenance Contracts: Ongoing service and maintenance agreements for electrical installations, including periodic inspection, circuit breaker testing, and gas filling services

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Linjemontage builds, renovates and maintains electrical power transmission and distribution infrastructure in Scandinavia at voltage levels from 0.4 kV up to 400 kV. Services include transmission and distribution line construction, cable laying/splicing/termination up to 220 kV, construction and renovation of distribution, reception and transformer stations, relay and control system integration (PLC, RTU, SCADA), power quality measurement and compensation, and recurring service and maintenance agreements. The company acts as general contractor, execution contractor or subcontractor, and delivers full EPC turnkey projects for network companies, industrial customers and public sector clients.

Product overview

Linjemontage offers a comprehensive portfolio of electrical power infrastructure services organized into five core areas: Transmission & Distribution (power lines from 0.4 kV to 400 kV, cable laying, splicing up to 220 kV), Stations (construction and renovation of distribution, transformer and receiving stations up to 400 kV), Relay and Control Systems (PLC/RTU/SCADA systems, relay protection), Electric Quality (measurements, monitoring, and compensation services), and Service & Maintenance (periodic inspections, circuit breaker testing, gas filling). The company also provides specialized solutions like LM-Power for addressing harmonics and reactive power issues, serving grid companies, industry, and public sector clients across Sweden and Norway.

Differentiator

Problem solved

Functional benefit

Products and services

• Transmission & Distribution Construction and maintenance of power transmission and distribution lines from 0.4 kV up to 400 kV, including cable laying, splicing and termination up to 220 kV voltage levels, for network companies, transmission system operators and industrial customers.
• Stations (Substations) Construction of new and renovation of distribution, receiving and transformer stations up to 400 kV, covering the full chain from planning to delivery, including EPC turnkey contracts for power station projects.
• Relay and Control Systems Purchase, configuration and maintenance of PLC, RTU and SCADA systems, including relay protection replacements for monitoring station transformers, for utilities and industrial substation owners.
• Electric Quality (Power Quality) Electric quality measurements and analyses as a service with fixed monitoring or ongoing as needed, including reactive power compensation solutions (capacitor banks, filter cabinets, phase compensation) for grid companies, industry, hospitals and public administrations dependent on high electric quality.
• Service and Maintenance Periodic inspection and testing of electrical installations and their components, including circuit breaker testing and gas filling, delivered under recurring service and maintenance agreements for network operators and industrial customers.
• LM-Power A specialized solution that addresses electric quality and harmonics issues that can damage equipment and helps customers avoid reactive power penalty charges on the grid, for industrial customers and network operators.

Quantifiable outcome

• Largest project in company history: 779 MSEK order from Svenska Kraftnät
• +2 more outcomes

Named customers11 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

Feature5 records

Scale indicators8 records

Recent moves12 records

Expansion highlights6 records

Direct peers

• Eltel Networks: Nordic-headquartered power network specialist delivering T&D build, substation and smart-grid rollout services across the Nordics and the Baltics. Highly comparable because Eltel competes head-to-head with Linjemontage for the same Svenska Kraftnät and DSO contracts and shares the same multi-voltage EPC service model.
• OneCo: Norwegian power-infrastructure contractor executing HV substations, T&D lines and cabling projects for Statnett and Norwegian DSOs. A direct Nordic peer because it competes with Linjemontage in the Norwegian high-voltage market that Linjemontage is expanding into via Drammen and Oslo.
• Bravida: Large Nordic electrical and HVAC installation contractor active across Sweden and Norway with significant substation and industrial-electrical work. Peer because it delivers comparable electrical installation and service-maintenance offerings to DSOs and industrial customers across the same geographies.
• Svevia: Swedish infrastructure construction company with growing power-network and substation construction operations. Peer to Linjemontage's T&D and station-construction segments, especially in northern Sweden, and competes for similar DSO and public contracts.
• Infranord: Swedish specialist contractor focused on railway and power-network infrastructure, including substations and catenary/T&D work. A direct peer for technical-construction resources and DSO contract competition in northern Sweden.

Broad incumbents

• Skanska: One of the largest Nordic construction groups with a power-infrastructure and substations practice operating across Sweden, Norway and globally. A broad-incumbent peer because it can compete for the same large T&D and station EPC contracts, though its power work is one of many segments.
• NCC: Major Swedish construction group with civil and infrastructure capabilities that overlap with Linjemontage's power-grid and substation construction work. A broad-incumbent peer because power is a smaller line within its wider portfolio but it competes in adjacent public tenders.
• Caverion: Nordic building solutions and industrial-electrical contractor delivering substations and electrical infrastructure to utilities and industry. A broad-incumbent peer that can compete for industrial and DSO installation work served by Linjemontage.

Regional players

• Veidekke: Norwegian-headquartered construction group with infrastructure and energy-construction operations across Scandinavia. Comparable because it executes power-network and station projects in Norway that directly overlap with Linjemontage's Norwegian growth strategy.

Others

• Kalpataru Power Transmission (KPTL): Parent of Linjemontage and India's largest EPC player in power transmission and substations. Related peer in that KPTL's capabilities, steel-tower supply chain and execution playbook feed Linjemontage's competitive positioning on HV transmission EPC.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/linjemontage

Compliance3 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 Linjemontage