Interconnection

Connecting to neighbouring grids strengthens our system. It means we can trade excess power between different countries. This will become increasingly important as we adopt more energy from renewable sources.

There are two established interconnectors between the island of Ireland and Great Britain, with a third being added this year:

At SONI, we facilitate capacity allocation and energy trading for these interconnectors.

‎The East-West Interconnector is a 500MW DC submarine interconnection between the island of Ireland and Wales. It connects the converter stations in Portan, Co. Meath to Shotton in Flintshire, entering the sea at Rush North Beach (Dublin) and Barkby Beach (North Wales). EirGrid own the EWIC and operate it on behalf of Irish electricity users.

See the EirGrid website for information on Ireland based interconnectors.

The Moyle Interconnector is a 500MW DC (2 x 250 dual monopoles) submarine interconnection. It links the electricity systems of Northern Ireland and Scotland.

Mutual Energy own the Moyle Interconnector. The link connects Ballycronan More Substation (NI) and Auchencrosh Substation (Scotland).

Moyle and EWIC publish outage information on Elexon’s Balancing Market Reporting System as a listed UK platform and JAO’s Inside Information Platform as a listed EU platform.

For interconnector related queries please contact us by: 

Email: interconnectors@soni.ltd.uk 
Phone: +44 (0) 28 90707 450