The latest figures from the supplier's monthly wind energy report show that wind energy provided 28 percent of Ireland's electricity last month, while solar power and other renewables accounted for 3 percent.
Over the course of the last nine months, Irish wind farms have generated 32 percent of the country's electricity.
"It is really positive to see the contribution that renewable energy made in September, with our wind farms providing more than a quarter of Ireland's electricity last month," said Noel Cunniffe, CEO of Wind Energy Ireland.
"To use the renewable electricity being produced by our wind and solar farms, we need a strong electricity grid that can carry the power to our homes and businesses.
"Wind Energy Ireland welcomed the Government's announcement to invest €750 million in the development of Ireland's electricity grid as part of Budget 2025. We believe that it is an important investment in Ireland's future so that we can continue to power local communities and grow our economy with more clean electricity."
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Despite the encouraging September wind generation figures, the average wholesale electricity price last month was the highest so far in 2024, as consumers continue to feel the pain of the dependency on imported fossil fuels.
The average wholesale price of electricity in Ireland per megawatt-hour during September 2024 was €112.73, up slightly from €111.62 in September 2023.
Prices on days with the most wind power saw the average cost of a megawatt-hour of electricity fall by over 20 percent to €86.35 per megawatt hour and rise to €135.64 on days when consumers relied almost entirely on fossil fuels.
"Affordability is really important to Irish families and businesses," said Mr Cunniffe.
"Every time a wind turbine or a set of solar panels is generating electricity, it is reducing our reliance on imported fossil fuels, helping to push down wholesale electricity prices and increasing our supply of clean energy."
Kerry wind farms continued to lead the way in decarbonising the electricity supply, producing more wind energy than any other county (108 GWh).
Cork wind farms came in second with 107 GWh and, for the first time since Wind Energy Ireland began publishing county generation data, in collaboration with Green Collective, Tipperary and Galway tied for third place (66 GWh). Mayo was the final county to reach the top five, producing 56 GWh.
"Last year Irish wind farms cut carbon emissions by twice as much as every other renewable energy source combined," said Mr Cunniffe.
"Wind power is our number one source of clean energy. To meet the needs of our growing economy, we need to accelerate the delivery of new wind farms and to do this we need the Government to ensure that efforts to provide our country with more clean energy are not impeded by local county development plans blocking the development of new wind farms."
