Oct 10, 2025
In September, 42% of electricity came from renewable sources.
Provisional data from EirGrid indicates that approximately 42% of electricity in September was generated from renewable sources. Wind farms produced the majority of this renewable energy, contributing to 34% of all electricity consumed in Ireland. Wind energy generation reached 920 gigawatt-hours (GWh), up from 776 GWh in September of the previous year. Additionally, grid-scale solar contributed 97 GWh, representing 4% of the total electricity generated. Meanwhile, gas accounted for 37% and imports made up 20%.
The overall electricity demand was 2,715 GWh for September, showing a slight rise from August. The electricity grid is currently able to handle up to 75% of its supply from renewable sources, known as the system non-synchronous penetration (SNSP) limit. Diarmaid Gillespie, EirGrid's director of system operations, stated that wind energy made up the majority of renewable generation last month, highlighting its significance for the power system. He also noted that as winter approaches, the fuel mix is expected to shift, with increased wind generation and higher electricity demand following the end of daylight saving time at the end of October.
The overall electricity demand was 2,715 GWh for September, showing a slight rise from August. The electricity grid is currently able to handle up to 75% of its supply from renewable sources, known as the system non-synchronous penetration (SNSP) limit. Diarmaid Gillespie, EirGrid's director of system operations, stated that wind energy made up the majority of renewable generation last month, highlighting its significance for the power system. He also noted that as winter approaches, the fuel mix is expected to shift, with increased wind generation and higher electricity demand following the end of daylight saving time at the end of October.