Siemens to refurbish the Moyle Interconnector

29 June 2020

Moyle Interconnector

Siemens Gas and Power (Siemens Energy) has been awarded the project to refurbish the Moyle Interconnector, a high-voltage direct-current (HVDC) link between Ballycronan More in County Antrim, Northern Ireland, and Auchencrosh, Scotland. The Moyle Interconnector control and protection system is almost 20 years old and is being modernized to enhance its operation. The refurbishment of the 500-megawatt interconnector will increase the security and reliability of the power supply to consumers in the United Kingdom. The project to upgrade the technology originally installed by Siemens in 2001 is now underway and the refurbishment is scheduled to be completed in September 2022.

The refurbishment of the interconnector will address the demands of the evolving electricity networks in both Great Britain and Northern Ireland. In particular, the upgrade improves the dynamic performance of the interconnector, enabling Mutual Energy to offer enhanced ancillary services. These will provide a valuable range of options to the System Operators as they seek the continued reliable and efficient management of the networks, whilst accommodating more variable renewable generation. Additionally, by introducing an overload capability, the upgraded Moyle Interconnector will have greater operational flexibility.