Provisional figures from EirGrid show that 41 per cent of electricity came from renewable sources last month, up from 34 per cent in November 2024.

Wind accounted for the bulk of renewable generation, providing 35 per cent of all electricity used and producing 1,067 gigawatt hours. Other sources such as grid‑scale solar and hydropower brought the overall renewable share to 41 per cent.

Gas generation made up 42 per cent of electricity in November, while 17 per cent was imported via interconnection. Total system demand stood at 3,088 gigawatt hours, an increase on October’s 2,969 gigawatt hours.

A new all‑time demand peak for a Sunday was recorded on November 30th, reaching 5,144 megawatts. The previous record had been set in January. A further milestone was reached on November 25th when battery discharge hit 362 megawatts, the highest ever recorded on Ireland’s transmission system.

The record came as EirGrid, SONI and SEMO introduced a major update allowing battery units, known as Energy Storage Power Stations, to be fully integrated into the real‑time electricity market. The change enables batteries to charge and discharge more efficiently, helping to balance supply and demand.

Diarmaid Gillespie, Director of System Operations at EirGrid, said demand rose as evenings grew shorter and temperatures dropped. “Notably we saw the highest demand for a Sunday since January of this year with batteries playing an ever increasing role in meeting peak demand on the power system,” he said.