---
title: Hornsea Project One - GIS
description: Installation of high- and medium-voltage gas-insulated switchgears on three (3) substations for the Hornsea Project One offshore wind farm
---

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

# [Hornsea Project One - GIS](https://www.semcomaritime.com/cases/hornsea-gis)

 Written by [Semco Maritime](https://www.semcomaritime.com/cases/author/semco-maritime) | Nov 3, 2018 11:00:00 PM

## Hornsea Project One Gas-insulated switchgears

##### Customer: SiemensEnd customer: ØrstedLocation: The UK part of the North SeaPeriod: 2017 - 2018

Installation of high- and medium-voltage gas-insulated switchgears on three (3) substations for the Hornsea Project One offshore wind farm.

##### Competences and systems

- High- and medium-voltage systems: 
    - 16 x 220 kV GIS bays
    - 60 x 34 kV GIS bays
- Electrical installation of 16 local control cubicles (LCC)
- Project management
- Preparation and control of documentation

##### Highlights

- The world’s first offshore wind accommodation platform
- Her Majesty Queen Margrethe II of Denmark came to see the platform at Semco Maritime’s yard in Esbjerg
- Project performed on time
- Positive feedback received from the customer

[View full post](https://www.semcomaritime.com/cases/hornsea-gis)

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