Ireland recorded highest wind energy generation for a September

Wind energy supplied 35 per cent of the country’s electricity last month, with solar and other renewables contributing a further 7 per cent — bringing the total renewable share to 42 per cent of national electricity demand.

The report shows that 1,129 gigawatt-hours (GWh) of electricity were generated by wind during September, marking a new record for the month.

Kerry was Ireland’s top producer with 129 GWh, followed by Cork (117 GWh), Galway (95 GWh), Derry (77 GWh) and Mayo (71 GWh).

The average wholesale electricity price stood at €94.48 per MWh, a decrease from €112.73 in the same month last year, and slightly below the €96.38 recorded in August.

On days when wind generation was highest, prices dropped to €62.01 per MWh, compared to €117.37 when fossil fuels dominated supply.

Noel Cunniffe, CEO of Wind Energy Ireland, said: “Wind energy is our number one source of renewable energy.

“Renewables provided over 40 per cent of our electricity last month and that figure is set to rise as we build more wind and solar farms.

“The more wind energy that we produce here in Ireland, the more we can secure our own supply of clean, affordable electricity and reduce the need to import expensive fossil fuels.

“Rather than importing hundreds of millions of euros of gas, Irish wind farms ensure money stays where it belongs, at home, supporting Irish workers and businesses.”

Cunniffe added that research published in 2025 showed renewable energy cut energy bills by an average of €320 per person between 2020 and 2023, proving how clean energy delivers tangible savings for households.

The report’s release follows the announcement of Budget 2026, which WEI welcomed for its commitment to investing in offshore wind development and expanding the capacity of key State agencies.

Cunniffe said: “The Government’s Budget for 2026 provides the confidence that the necessary funding will be available to help grow our renewable energy sector.

“The investment to support the development of Ireland’s national DMAP will help transform our electricity system and accelerate the delivery of clean, affordable and secure energy for Irish families and businesses.”

* This article was originally published on BusinessPlus.ie.