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Trading across the Moyle Interconnector

Moyle Interconnector Limited (Moyle) is regulated under its licence to participate in transmission, issued under the energy legislation of Northern Ireland and its interconnector licence, issued under the energy legislation of Great Britain.

Ballycronan More converter station at Islandmagee
Ballycronan More converter station at Islandmagee

The transfer capacity of the Moyle Interconnector for the trading of electricity between the electricity markets of Ireland and Great Britain is set out in the table below. The detailed methodology for calculating the transfer capacity can be found here.

 

RATING

LIMITING FACTOR

Import into NI

450MW (winter)

  1. Largest single infeed to All-Island System.
  2. Thermal rating of local 110kV network.
  3. Voltage stability.

Import into NI

410MW (summer)

Thermal limit of local 275kV network

Export from NI

300MW (all seasons)

Voltage stability

The trading capacity of the interconnector is available to the market for third party access. Under its licence, Moyle makes that capacity available to the market in accordance with access rules which are subject to the approval of the Northern Ireland Authority for Utility Regulation (NIAUR). SONI Limited, the system operator for Northern Ireland, acts as Moyle’s agent in implementing these access rules.

Convertor Transformers
Converter Transformers

The current access rules can be found here. Moyle offers its available capacity to the market over a number of timescales including annual, monthly and (in the near future) daily. Capacity is sold under the terms of the access rules in force from time to time with explicit auctions being held on the Auction Management Platform from October 2011. Parties wishing to trade on Moyle and participate in capacity auctions must sign up to the access rules and satisfy their eligibility criteria.

If you are interested on trading on Moyle and would like more information please contact info@mutual-energy.com.