42% of electricity came from renewable sources during September 2025 in Ireland
Published by Abby Butler,
Editorial Assistant
Energy Global,
New provisional data from EirGrid shows that 42% of electricity in September 2025 in Ireland came from renewable sources.
The majority of renewable electricity generated in September 2025 came from wind farms, which accounted for 34% of all electricity used in Ireland. Total generation from wind energy amounted to 920 GWh, compared with 776 GWh in September 2024.
Some 97 GWh of electricity came from grid scale solar in September 2025, accounting for approximately 4% of electricity generated.
Elsewhere, 37% of electricity came from gas and 20% was imported.
Overall electricity system demand stood at 2715 GWh for September 2025, up slightly from August 2025.
EirGrid’s carries out the complex task of balancing electricity supply and demand at all times from the National Control Centre.
Currently, the electricity grid can accommodate up to 75% of electricity from renewable sources at any one time. This is known as the system non-synchronous penetration (SNSP) limit.
Diarmaid Gillespie, Director of System Operations at EirGrid, commented: “Wind energy represented the vast majority of renewable generation in September 2025, which demonstrates the continued importance of this source of electricity for the power system. As we head towards the winter months, we expect the fuel mix to change, with wind generation being more dominant, and a marked increase in demand for electricity, particularly after daylight saving ends and the clock change at the end of October 2025.”
For more news and technical articles from the global renewable industry, read the latest issue of Energy Global magazine.
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Read the article online at: https://www.energyglobal.com/solar/14102025/42-of-electricity-came-from-renewable-sources-during-september-2025-in-ireland/
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