Northern Ireland's
Single Gas
Market Operator

Managing today’s gas market. Shaping Northern Ireland’s energy future

NI Network Code Tariff Information

Simplifying gas supplier processes with a single point of contact

Delivered through a single team on behalf of Northern Ireland’s gas TSOs, GMO NI manages all commercial processes through a single network code and IT platform (DELPHI), while also leading gas network planning.

About Us 

Key Functions include:

Single Point of Contact

A central interface for Shippers and all participants in the Northern Ireland gas transmission market.

Market Operations

Managing capacity marketing and booking processes, including nominations and allocations.

Network Code Administration & Market Development

Overseeing the Single Network Code and supporting the ongoing evolution of the NI gas transmission market.

Market Systems (Delphi)

Administration and operation of the (Delphi) IT platform fro all commercial and operational transactions.

Invoicing & Billing

Issuing all invoices directly to Shippers, providing a streamlined and consistent billing process.

Postalised System Administration

Delivering tariff calculations, monthly revenue distribution to TSOs and year-end reconcilation.

Balancing Charges

Development and administration of energy balancing arrangements.

Market Transparency & Reporting

Ensuring compliance with transparency obligations and providing access to operational market data.

Gas Network Planing

Supporting the long-term development of the gas network through strategic planning and outlook reporting.

Market Representation

Acting as the subject matter expert on NI gas market arrangements, representing Northern Ireland interests across UK and EU industry forums.

NI Gas Demand Report

Select your preferred year(s) and month(s) to generate a tailored NI Gas Demand Report

NI Gas Demand Report

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