What LTB Leitungsbau does

LTB Leitungsbau GmbH is a German full-service provider for overhead high-voltage transmission line infrastructure, with roots traceable to 1914 (BBC Brown Boveri) and current legal incorporation dating to a 2005 management buyout of ABB Leitungsbau GmbH Mannheim and VEB Energiebau Dresden. The company delivers an integrated value chain covering line planning (routing, surveying, permitting, environmental studies), engineering (electrical and civil, static/dynamic design, condition assessment), construction execution (foundations, tower assembly, cable pulling, retrofits), and lifetime service (24/7 emergency response, line inspection, technical documentation, temporary/emergency cables). It also operates proprietary R&D assets — notably the ASTROSE® self-powered wireless monitoring system (developed with Fraunhofer IZM since 2014), a 400-kN tension testing machine, and the Fichtelberg ice-load measurement station at 1,205 m altitude — and backs them with 13 patents and 5 utility models.

The business model is project-based enterprise services delivered through direct B2B contracts with Germany's transmission system operators (50Hertz, TransnetBW, Amprion), distribution system operators (E.DIS, WEMAG Netz), railway infrastructure operators (Deutsche Bahn), and large industrial clients (Tesla Gigafactory Berlin). Commercial scale signals include the completed 380-kV Nordring Berlin line (44 km, 125 pylons for 50Hertz), the ongoing ULTRANET HVDC project (42 km section B1 for TransnetBW), and a BKW-aggregated ~EUR 150M order book of German grid projects; revenue figures are not publicly disclosed. The company operates from six regional offices (Radebeul HQ, Lehrte/Ahlten, Mannheim, Neuenhagen, Güstrow, Dessau-Roßlau) plus a long-established vocational training academy in Lichtenberg/Erzgebirge, holding 400–500+ employees and a management team of co-Managing Directors Joachim Weindel, Dirk Kunze, and Sven Behrend. Since October 2019 LTB has been a wholly-owned subsidiary of the Swiss BKW Group within its Infra Services division.

Name

LTB Leitungsbau

Legal name

LTB Leitungsbau GmbH

Website

https://ltb-leitungsbau.de

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

51–100 employees

Short description

LTB Leitungsbau is a German B2B infrastructure services firm specializing in the planning, engineering, construction, and maintenance of high-voltage overhead transmission lines, serving transmission and distribution grid operators (50Hertz, TransnetBW, Amprion, E.DIS, WEMAG), Deutsche Bahn, and industrial clients as a subsidiary of the Swiss BKW Group.

Ownership category

akta.pro rank

Product category

High-voltage transmission line construction services

NAICS

Power and Communication Line and Related Structures Construction (237130), Electric Power Transmission, Control, and Distribution (22112), Electric Bulk Power Transmission and Control (221121), Electrical Contractors and Other Wiring Installation Contractors (23821)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Overhead Transmission Line EPC (HV/EHV) (EUAEABAA)

akta.pro secondary industries

Transmission line EPC & construction (overhead) (EUADAKAA), Engineering design services (line design, substation design, civil/structural) (EUADAKAG), Testing, Commissioning & Energization Services (HV) (EUAEABAI)

Keywords

• High-voltage transmission lines
• Overhead line construction
• Energy infrastructure services
• Grid engineering services
• Power line maintenance

Headquarters

HQ city

Radebeul

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Infrastructure Construction Services: Project-based professional services for construction, maintenance, and retrofit of energy transmission infrastructure. Revenue is generated through contracts for new construction projects, emergency repair services, line inspection, and consulting/engineering services. BKW Group projects valued at approximately 150 million euros represent significant contract wins.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

LTB Leitungsbau GmbH is a full-service provider for high-voltage overhead transmission line infrastructure in Germany, delivering integrated services across planning (route planning, surveying, permitting), engineering (electrical and civil engineering, static design), construction execution (foundations, tower assembly, cable pulling), and operational service (24/7 emergency response, inspections, retrofits). The company also develops proprietary monitoring and measurement technologies, notably the ASTROSE self-powered wireless monitoring system for dynamic line rating, and operates a high-altitude ice load measurement station at Fichtelberg.

Product overview

LTB Leitungsbau GmbH is a full-service provider for overhead transmission line infrastructure, offering a unified portfolio of planning, engineering, construction, and monitoring services. The core product offerings center on ASTROSE®, an autonomous wireless monitoring system for high-voltage lines that measures cable inclination to calculate conductor temperature and detect conditions like ice loads and faults; and the Eislastmessstation Fichtelberg, a high-altitude testing facility for weather-related line stress analysis. These are complemented by service divisions covering Leitungsplanung (route planning, surveying, permitting), Engineering (electrical/civil engineering, static design), Bauausführung (construction project management), and Service (emergency response, temporary lines, inspection, documentation). Together, these form an integrated value chain from line planning through construction to ongoing monitoring and maintenance.

Differentiator

Problem solved

Functional benefit

Brands

• ASTROSE: Monitoring system for overhead power lines that measures cable inclination to calculate temperature and increase transmission capacity. Developed with Fraunhofer IZM since 2014, funded by the German Federal Ministry for Economic Affairs and Energy.

Products and services

• ASTROSE Monitoring System Energy-autonomous wireless monitoring system for high-voltage overhead transmission lines that measures cable inclination to calculate conductor temperature, enabling real-time monitoring for ice load detection, transmission capacity optimization (ampacity), cable break detection, theft protection, and selective ground fault detection in 110kV networks. Operates independently of mobile networks or internet infrastructure.
• Ice Load Measurement Station Fichtelberg (Eislastmessstation)

Quantifiable outcome

• Grid operators can temporarily increase transmission capacity by operating closer to thermal limits
• +2 more outcomes

Named customers7 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

Feature4 records

Partnerships

Five partnerships are on record, tiered major and core.

• EQOS EnergiemajorChannel Partner/ Reseller/ DistributorEQOS Energie is a general contractor for TransnetBW on the ULTRANET project, handling stringing work from Heidelberg-Neurott to Philippsburg. LTB handles northern construction sections from Neurott to Mannheim-Wallstadt.
• Fraunhofer IZMcoreStrategic or Co-development PartnerCollaboration with Fraunhofer Institute for Reliability and Microintegration IZM since 2014 for the development of ASTROSE monitoring technology. LTB contributes practical field experience while Fraunhofer provides technical R&D capabilities.
• TransnetBWmajorStrategic or Co-development PartnerTransmission network operator and project partner for ULTRANET DC transmission project. TransnetBW awarded LTB the general contractor role for construction of ULTRANET section B1.
• AmprionmajorStrategic or Co-development PartnerJoint transmission network operator partner with TransnetBW for the ULTRANET DC transmission project (total 340 km).
• E.DISmajorImplementation/ SI/ Consulting PartnerE.DIS is a regional energy distributor in Brandenburg. LTB provided emergency response services after sabotage attack on power infrastructure, restoring supply to Tesla Gigafactory and logistics center within one week.

Scale indicators8 records

Recent moves12 records

Expansion highlights6 records

Market position

Strengths4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/LTBLeitungsbauGmbH
• LinkedInlinkedin.com/company/ltb-leitungsbau-gmbh
• Instagraminstagram.com/ltb_leitungsbau

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 LTB Leitungsbau