Save it for later: the role of LDES in Ireland’s future power system

In its transition to net zero, Ireland’s power system will undergo fundamental changes as it shifts from a reliance on thermal generation from imported fossil fuels to generation from indigenous, intermittent, renewables. Among these changes is the growing need for flexibility to help maintain system stability. This includes the provision of additional long duration energy storage (LDES) as it can help to manage congestion. During periods of high renewable output, LDES technologies can store excess power for long periods of time before exporting it when required.  

While the government and System Operators acknowledge the need to develop LDES, several barriers are acting to disincentivise investment in Ireland. In line with a recent paper we worked on with the Climate Change Advisory Council, we have outlined several steps to ensure that LDES is built at pace and scale across Ireland. 

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