Welcome to GMO NI

We are the single Gas Market Operator for Northern Ireland (GMO NI) and went live operationally on the 1st of October 2017. From that date onward we manage the commercial rules and all trading and transactional aspects of the gas transmission market in Northern Ireland.

The Transmission System Operators in Northern Ireland (PTL, BGTL, WTL and GNI (UK)) have specific conditions in their Gas Conveyance licences requiring them to put in place arrangements to implement GMO NI.


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