The overhead alternating current, AC, link between the Irish and Northern Irish electricity grids is a critical infrastructure project for the island of Ireland. It will be the backbone of a fit-for-purpose electricity system that will ensure energy security, allow more renewables to be used on the island, reduce the need to burn gas and coal, reduce electricity costs and reduce greenhouse gas emissions.
The AC overground backbone line effectively binds the two electricity grids. This will allow the grids to stabilise each other, providing instant support in the event of a power line or plant failing. It will provide system services and the sharing of renewable power. These benefits would otherwise have to be paid for by significant infrastructure, which would involve technical complexities, would cost the consumer more and would result in additional greenhouse gas emissions. Were a direct current, DC, underground cable to be used, these benefits would not accrue. These significant savings, estimated to be €80 million to €90 million per annum, are the main benefit of the project, which will allow shared resources, shared stability and a more robust and cost-effective electricity system. A DC link would not provide these benefits and, therefore, would not realise a truly all-Ireland grid.
The concerns of householders, farmers and communities have been fully considered and addressed at every stage of the development of the North-South interconnector. For example, the interconnector received planning permission in Ireland and Northern Ireland after the extensive public consultation that both jurisdictions require. Both EirGrid and ESB Networks have continued to engage with those living closest to the route of the interconnector since then.
The 2018 review referred to by the Deputy was an update by an international expert commission of its 2012 independent study to examine the technical feasibility and cost of undergrounding the North-South interconnector. The commission’s terms of reference for this update included consultation with the North East Pylon Pressure Campaign, the County Monaghan anti-pylon committee and other bodies deemed necessary. I am satisfied that the concerns of householders, farmers and communities have been and are being taken fully into account by EirGrid and ESB Networks and that the completed project will represent the best possible solution for all concerned.
