Provisional figures from EirGrid indicate that roughly 41% of electricity used in November came from renewable sources.

By comparison, official metered data shows that renewables accounted for 34% of electricity in November 2024.

Wind delivered the bulk of green generation, providing 35% of total electricity demand last month, with output of 1,067 GWh. Including grid‑scale solar and hydropower, renewables collectively supplied 41% of demand.

Gas‑fired generation made up 42% of consumption in November, while 17% was imported via interconnectors.

Total system demand reached 3,088 GWh in November, up from 2,969 GWh in October.

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A new all‑time Sunday peak was recorded on 30 November, when demand hit 5,144 MW. The previous record for a Sunday peak had been set in January 2025.

Ireland's transmission system also saw a new high for battery discharge, which reached 362 MW at one point on Tuesday 25 November during a period of strong demand and low wind output.

Last month, EirGrid, SONI and SEMO introduced a major update that fully integrates battery units—known as Energy Storage Power Stations (ESPS)—into the real‑time electricity market, enabling more efficient charging and discharging.

EirGrid balances electricity supply and demand from the National Control Centre on a minute‑by‑minute basis and plans strategically for Ireland's long‑term electricity needs.

Diarmaid Gillespie, Director of System Operations at EirGrid, said: "As we would expect in November, with the clocks having changed, evenings getting shorter and the weather colder, we continued to see an increase in demand on the system last month.

"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."