In a significant move for Northern Ireland's utilities sector, the region's primary electricity and gas transmission system operators (TSOs) have entered into a formal Memorandum of Understanding (MoU).

The agreement, signed by SONI (System Operator Northern Ireland) and Gas Market Operator Northern Ireland (GMO NI)—representing Mutual Energy and GNI(UK)—establishes a framework for deepened collaboration and the alignment of capital investments across both energy networks.

The partnership is designed to facilitate a "whole-system" approach to energy planning. By sharing technical expertise, transparency in data, and market intelligence, the operators aim to ensure that the transition to a decarbonised economy does not compromise grid stability. This integrated planning is particularly critical as gas-fired power generation continues to provide essential back-up capacity for intermittent renewable sources like wind.

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From an infrastructure and procurement perspective, this alignment is expected to provide a more predictable landscape for future network upgrades and policy development. By synchronising investments, the TSOs aim to deliver a more efficient and cost-effective energy system for industrial and domestic consumers alike.

Mark Raphael, General Manager of GMO NI, emphasised the evolving role of the gas network: "The development of robust potential pathways for the future energy system has never been more important in this changing energy environment. As we transition towards net zero, we expect the role of gas transmission to evolve while continuing to play a pivotal role supporting power generation when there is a lack of renewable energy generation such as wind. It is essential that planning and policy in Northern Ireland are informed by a joined-up view of the future energy landscape."

Gerard Carlin, Director of Networks and Innovation at SONI, highlighted the milestone's impact on the sector: "This agreement is a major milestone in Northern Ireland's energy transition as it will allow us to deepen industry ties and plan our energy future in an aligned whole system and plan-led manner. We have always had a strong relationship with Mutual Energy and GNI (UK), and this partnership will enable us to better collaborate and ensure the alignment of investments in both the electricity and gas systems. That will be beneficial for the industry, and most importantly for consumers."

This strategic alliance marks a shift toward a more cohesive utility management model in Northern Ireland, providing a clear signal to the construction and engineering sectors regarding the long-term direction of the region's energy infrastructure.