EirGrid has recently proposed new Fault Ride-Through (FRT) requirements for Large Energy Users (LEUs) as part of efforts to enhance grid stability. These requirements aim to address concerns that the disconnection of LEUs during transient faults exacerbates system instability, increasing the risk of cascading failures, particularly in areas with high demand concentrations such as data centres. The proposal seeks to ensure that LEUs remain connected to the grid during specific fault conditions, bringing their obligations in line with existing FRT standards for generators.
While we recognise the importance of maintaining system resilience, the Electricity Association of Ireland (EAI) has raised several concerns regarding the proposed modification.
Key Concerns Raised
- Feasibility and Cost: While FRT requirements have been successfully applied to generators, demand customers operate differently, and the same approach may not be suitable. Engagement with equipment manufacturers (OEMs) will be key to assessing whether compliance is technically or financially viable.
- Retrospective Application: The proposal includes retrospective requirements, which deviate significantly from standard practice in the Single Electricity Market (SEM), and potentially could impact on investment decisions and economic growth.
- Potential Impact on Key Decarbonisation Technologies: Any modification should ensure that demand facilities, which could include large battery storage sites and electrolysers essential for Ireland’s decarbonisation objectives, are not impacted.
EAI’s Recommendations
A key issue is the lack of robust stakeholder engagement and the expedited timeline for implementation. EAI is advocating for a delay in the implementation of the proposed FRT requirements. We recommend a transparent consultation process that allows industry stakeholders to articulate their perspectives and explore alternative solutions. This process should include an assessment of the costs, feasibility, and potential unintended consequences to ensure that any new obligations align with Ireland’s decarbonisation goals.
We will be continuing our engagement with EirGrid and other stakeholders on this critical issue and will work towards a solution that balances grid stability with economic and environmental considerations.