---
title: BOP O&M Tennet Offshore GmBH
description: Semco Maritime manages a five-year maintenance for TenneT TSO, enhancing transmission systems and earning positive feedback for cooperation and innovation.
---

[Cases ](https://www.semcomaritime.com/cases)

# [BOP O&M Tennet Offshore GmBH](https://www.semcomaritime.com/cases/bop-om-tennet-offshore-gmbh)

 Written by [Semco Maritime](https://www.semcomaritime.com/cases/author/semco-maritime) | Jul 24, 2025 6:44:39 AM

## Customer: TenneT TSOLocation: The Netherlands and GermanyPeriod: Ongoing-2027

##### Activities

##### Solution

Preventive and corrective maintenance of all [HVDC](https://www.semcomaritime.com/renewables-engineering) and HVAC transmission systems on board substations (onshore and offshore).

##### Competences and systems:

- Switchgears
- Transformers
- Coolers
- Pumps
- Motors
- Grease traps
- Cladding
- Steel structures
- Hygiene systems
- Dosing units
- Lubrication units
- Bearings
- Instrumentation
- Lighting
- Filtration
- Ventilation
- [Fire alarms & firefighting](https://www.semcomaritime.com/renewables-firefighting)
- Control systems
- Compressors
- Power distribution
- UPS
- Tankage
- Lightning protection
- Access systems
- Shunt reactors
- Diesel generators
- Pressure vessels
- Lifting equipment

##### Highlights

Positive feedback from the customer on our constructive and innovative solutions and on the cooperative atmosphere throughout the process.

 

[View full post](https://www.semcomaritime.com/cases/bop-om-tennet-offshore-gmbh)

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