Sear Gmbh

What Sear Gmbh does

SEAR GmbH is a privately held German electrotechnical engineering and installation services company headquartered in Rostock, with roots tracing to Siemens-Schuckert-Werk Rostock (1904) and a modern form established through successive MBOs culminating in an internal succession completed in 2025. The company designs, installs, and commissions complex high-voltage infrastructure, with particular depth in HVDC converter stations (up to 525 kV DC / 380 kV AC), AIS and GIS substations (110–380 kV), FACTS systems (Statcom, SVC, MSCDN, SynCon), high-voltage cable installation, and railway converter stations for Deutsche Bahn. SEAR also delivers ancillary switchgear manufacturing via a 700+ m² in-house facility, automation and control systems for substations, offshore platforms and critical infrastructure, and engineering/planning services such as cable routing and net calculations. R&D output includes the IPMS Platform 4.0 (VDI 5600 + ISA 88/95), an ISYS-MES integration layer for Industry 4.0 control stations, and the OWS-MV offshore wind maintenance information platform, developed with Fraunhofer, Universität Rostock, and BMBF funding.

The company's business model is B2B project-based professional services, with revenue generated through tendered multi-year contracts awarded by German and European transmission system operators (50Hertz, Amprion, TenneT, TransnetBW), distribution system operators, industrial energy clients (RWE, Vattenfall, BASF, Dr. Oetker, Gascade), Deutsche Bahn, and OEM partners (Siemens Energy, GE, Hitachi Energy). Pricing is custom-quoted per project with no standard rate card; contracts are awarded on technical reputation, HSEQ performance, and certifications (ISO 9001/14001/45001, KTA 1401, WHG). A dedicated Vertrieb/Kalkulation (Sales/Calculation) team manages inbound tenders, supplemented by an online inquiry form. Approximately 150 employees staff SEAR GmbH, while the broader SEAR Gruppe (including SEAR Polska, wholly-owned MAR, and the 50/50 ESSI JV with EMIS Gruppe) totals 250–300+ staff and reports >€45M annual turnover (>€50M in past financial year per JV press release).

SEAR participates in the energy transition (Energiewende) value chain by providing the installation labor and engineering expertise that translates OEM converter technology and TSO/DSO capital plans into delivered grid infrastructure. Recurring service and maintenance contracts layered atop the project base provide partial revenue smoothing against the inherently lumpy project cycle. Customer-side recognition includes 50Hertz's "Best Contractor 2025" award in HSEQ for substations, validating operational safety culture as a competitive input alongside regulatory certifications.

Name

Sear Gmbh

Legal name

SEAR GmbH

Website

https://sear-gmbh.de

Company type

Private

Founded year

1904

Operating status

Operating

Short description

SEAR GmbH is a Rostock-based electrotechnical services company that designs, installs, and commissions high-voltage grid infrastructure — HVDC converter stations, AIS/GIS substations, FACTS systems, and railway converter stations — serving European TSOs, DSOs, industrial energy clients, and OEMs such as Siemens Energy under multi-year B2B project contracts.

Ownership category

akta.pro rank

Product category

Electrical Engineering Services for Power Transmission and Distribution Infrastructure

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Electrical Equipment Manufacturing (3353), Relay and Industrial Control Manufacturing (335314), Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Switchgear & Switchboard Apparatus (3613), Electrical Industrial Apparatus (3620), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Switchgear & Switchboards (HV/MV/LV, GIS/AIS) (IMAGAAAB)

akta.pro secondary industries

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA), Industrial Control Cabinets & Power Distribution (Panels, Switchgear for Automation) (IMAHAHAK), Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA), Circuit Breakers, Disconnectors, Earthing Switches & Switchgear Components (EUADACAH)

Keywords

• High voltage electrical engineering
• HVDC transmission installation
• Substation construction services
• Electrical infrastructure automation
• Switchgear manufacturing services

Headquarters

HQ city

Rostock

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Electrotechnical Project Services: The primary revenue stream: full-lifecycle project services including consulting, planning, installation, commissioning, maintenance, and service for complex electrotechnical systems. Projects include HVDC converter stations, AIS/GIS substations, FACTS installations, offshore wind infrastructure, and critical infrastructure security. Revenue is earned on a project-by-project basis, with major contracts such as DolWin4 & BorWin4 HVDC stations (Siemens Energy) and substations for 50Hertz. Revenue is project-based and non-recurring per project, though maintenance contracts provide recurring service revenue.
2. Switchgear and Control Cabinet Manufacturing: Custom manufacturing and supply of low-voltage switchgear and control cabinets for substations, converter stations, offshore installations, and industrial automation applications. Includes design, engineering (in ePlan and RuPlan), production, and delivery. Revenue is earned through equipment supply as part of project delivery.
3. Engineering and Planning Services: Specialized planning and engineering services including cable management, cable routing, cable sizing/dimensioning, net calculations, and CAD-based 3D cable routing. Provided as standalone services or as part of larger project engagements.
4. Joint Venture ESSI (Smart Infrastructure): The 50%-owned ESSI GmbH joint venture with EMIS Gruppe generates revenue through intelligent infrastructure solutions, including smart grid control, building and industrial energy system networking, and automation services. SEAR's share of this revenue is accounted for through the equity method.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

SEAR GmbH designs, constructs, installs, and commissions complex electrotechnical systems for energy transmission and distribution, including HVDC converter stations, AIS/GIS substations, FACTS installations, high-voltage cable systems, and railway converter stations. The company also manufactures custom switchgear and control cabinets, delivers automation and production management systems, and provides engineering, planning, and security services for critical infrastructure and nuclear facilities.

Product overview

SEAR GmbH is an electrotechnical services company offering a portfolio of installation, engineering, and manufacturing services for complex electrical systems. The core offering centers on electrotechnical system construction and installation (Energieverteilung & -übertragung), encompassing air-insulated switchgear (AIS), gas-insulated switchgear (GIS), HVDC transmission systems, FACTS, railway converter stations, and high-voltage cable installation. Supporting this are engineering services for cable management and dimensioning, renewable energy solutions including gas stations and power-to-heat systems, plant security services for critical infrastructure and nuclear facilities, and custom switchgear manufacturing for onshore and offshore applications. Research and development efforts include the ISYS-MES integration layer for Industry 4.0 control stations, the IPMS (Integrated Production Management Solution) platform for manufacturing execution, and the OWS-MV information platform for offshore wind farm maintenance.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrotechnical System Installation (Elektrotechnische Anlagenerrichtung) Construction and installation of complex electrotechnical systems including substations, converter stations, and power distribution infrastructure for transmission and distribution system operators, industrial clients, and critical infrastructure operators.
• HVDC Transmission Installation (HGÜ – Hochspannungsgleichstromübertragung) High-voltage direct current transmission installation services for land and offshore converter platforms, including electromechanical installation of converter technology up to 525 kV +/- DC, with over 20,000 MW installed across 23 converter station projects.
• AIS – Air-Insulated Switchgear Substations Air-insulated switchgear (Freiluftschaltanlagen) substation construction at 110–380 kV for energy transmission and distribution, covering primary and secondary technology, installation, and commissioning. Over 1,000 AIS bays installed in more than 100 substations.
• GIS – Gas-Insulated Switchgear Substations Gas-insulated switchgear (Gasisolierte Schaltanlagen) substation construction at 110–380 kV with SF6 and CleanAir for onshore and offshore applications. Over 600 GIS bays installed in more than 150 substations.
• FACTS – Flexible AC Transmission Systems Installation of Flexible AC Transmission Systems (Blind-/Wirkleistungsregelanlagen) including Statcom, SVC, MSCDN, and SynCon for reactive and active power regulation up to 380 kV, supporting grid stabilization.
• Railway Converter Stations (Umrichterwerke für die DB AG) Construction of converter stations (Umrichterwerke) for Deutsche Bahn AG railway traction power supply up to 110 kV, supporting AC-DC power conversion in the German rail network.
• High-Voltage Cable Installation (HKM)

Quantifiable outcome

• 25% reduction in maintenance expenses for offshore wind parks through optimized operating and maintenance strategies using a unified data model.
• +4 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• EMIS GruppecoreStrategic or Co-development Partner · 12 July 2021In July 2021, SEAR Gruppe and EMIS Gruppe established a 50/50 joint venture, ESSI GmbH (EMIS SEAR Smart Infrastructure GmbH), headquartered in Berlin. The JV focuses on intelligent networking of energy systems, buildings, and industries, combining SEAR's expertise in power plant construction and automation with EMIS's experience in power plant services, offshore wind, and industrial optimization. The JV leverages 800 specialists from both companies and offers full-service solutions (Full Service Provider) across smart grid control, storage, and networked systems.
• Fraunhofer GesellschaftcoreStrategic or Co-development PartnerFraunhofer is a joint project partner in the development of the Integrated Production Management Solution Platform 4.0 (IPMS). The collaboration combines SEAR's industry expertise with Fraunhofer's research capabilities to develop an integrated production management system bridging VDI 5600 and ISA 88/95 standards for Industry 4.0 applications.
• Universität Rostock (University of Rostock)coreStrategic or Co-development PartnerUniversity of Rostock is a joint project partner in the IPMS R&D project, contributing academic research to the development of the integrated production management solution platform. The collaboration is supported by ESIF (European Structural and Investment Funds).
• OWS-MV (Offshore Wind Service Management Mecklenburg-Vorpommern)coreStrategic or Co-development PartnerSEAR participates as a partner in the OWS-MV growth core initiative (Verbundprojekt VP4), focused on developing an information platform for effective maintenance of offshore wind turbine parks. The project aims to reduce electricity generation costs by optimizing operation and maintenance processes, achieving at least 25% reduction in maintenance expenses. SEAR contributes expertise in offshore electrical infrastructure. The project is funded by BMBF (Bundesministerium für Bildung und Forschung).
• SEAR PolskacoreOthersA wholly-owned subsidiary of SEAR Gruppe that implements SEAR's high standards in the commercial/industrial sector. SEAR Polska extends the group's service capabilities to Poland and Polish-speaking markets. Founded in 2012.
• MAR Marine- und Automatisierungstechnik Rostock GmbHcoreOthersMAR is a specialist for automation and digitalization within the SEAR Gruppe. SEAR took full control of MAR in 2019. MAR contributes expertise in marine automation and industrial digitalization to the group.
• ESSI GmbH (EMIS SEAR Smart Infrastructure GmbH)coreOthersESSI GmbH is the 50/50 joint venture between SEAR Gruppe and EMIS Gruppe, focused on smart infrastructure solutions including intelligent energy system networking, building automation, and industrial energy management. Based in Berlin.
• Siemens EnergycoreChannel Partner/ Reseller/ DistributorSiemens Energy is a key customer and technology partner. SEAR GmbH serves as a preferred installation contractor for Siemens Energy's HVDC converter station projects (DolWin4, BorWin4, and others). SEAR also installs Siemens equipment in AIS and GIS substations. The relationship is characterized by repeat HVDC project awards from Siemens Energy over 10+ years.
• General Electric (GE)minorChannel Partner/ Reseller/ DistributorGE is a customer/supplier partner for whom SEAR installs equipment in AIS, GIS, and FACTS projects. GE provides equipment that SEAR integrates as part of substation and converter station projects.
• Hitachi EnergyminorChannel Partner/ Reseller/ DistributorHitachi Energy (formerly Hitachi ABB Power Grids) is a customer/supplier partner for whom SEAR installs AIS, GIS, and FACTS equipment in substations.
• ROSTOCK SEAWOLVESminorGTM or Marketing PartnerSEAR GmbH sponsors the ROSTOCK SEAWOLVES professional basketball team. The sponsorship reflects regional roots, shared values of performance and sustainable engagement, and serves as a marketing/community engagement initiative.

Scale indicators9 records

Recent moves18 records

Expansion highlights5 records

Broad incumbents

• SPIE GmbH: European multi-technical services group with a substantial German HV substation and energy infrastructure division (incorporating SAG). Larger, diversified player offering SEAR-like capabilities plus broader facility services.
• Siemens Energy: Global HVDC, FACTS, and substation technology OEM; SEAR's largest customer and preferred installation partner. Comparable in HVDC domain but as technology owner rather than installation specialist.
• GE Vernova: GE's energy-focused spin-off providing HVDC, FACTS, and grid equipment. SEAR installs GE-supplied equipment in AIS/GIS/FACTS projects, making it both a partner and adjacent incumbent in the same HVDC value chain.
• Bilfinger: German-headquartered industrial services provider with significant energy transition and HV infrastructure exposure. Competes in substation and grid-adjacent services as part of a wider process-industry portfolio.
• Hitachi Energy: Global HV equipment manufacturer (HVDC, GIS, FACTS, transformers) and SEAR partner/customer for AIS/GIS installation work. Comparable in substation technology supply though not in installation services.

Direct peers

• Omexom (VINCI Energies): VINCI Energies' brand dedicated to energy infrastructure, including HV substations, HVDC links, and grid integration. Direct competitor in German substation and grid-expansion tenders with comparable project execution model.
• EQOS Energie: German-headquartered specialist electrical infrastructure services provider delivering HV substation, overhead line, and energy transition project services across DACH. Highly comparable to SEAR in service portfolio, customer base (German TSOs and DSOs), and project-based revenue model.
• SAG GmbH (now part of SPIE): Austrian-origin electrical networks specialist (acquired by SPIE) providing substation construction, cable installation, and HV services to TSOs/DSOs in DACH. Closely comparable in HVDC/substation project capabilities, TSO customer relationships, and service-line breadth.

Emerging players

• Trench Group (Siemens Energy): Specialist in instrument transformers and HV coils used in HVDC and substation projects. Operates upstream of SEAR's installation work as a Siemens Energy-owned equipment supplier with niche focus.

Others

• Helukabel / nkt HV cables: High-voltage cable suppliers whose products SEAR installs in substation and HVDC projects. Adjacent ecosystem participant rather than direct competitor, but part of the same HVDC supply chain.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Sear Gmbh