Irish wind farms see record June with share of electricity rising to 30%

Average wholesale price of electricity per megawatt hour dropped for the fifth month in a row, marking the first time prices have fallen under €100 so far this year

Based on data provided by Green Collective, Kerry wind farms provided more electricity than any other county last month, with 105 GWh of power, around 11% of the country’s wind energy.

The share of electricity demand met by Irish wind farms rose slightly last month, growing to 30% in June.

The monthly report from Wind Energy Ireland also shows that the demand for electricity during June increased marginally from 3,019 gigawatt-hours (GWh) to 3,151 GWh in the same month last year.

Noel Cunniffe, CEO of Wind Energy Ireland, said: “Our members provided nearly a third of Ireland’s electricity during the first half of 2025, and last month was a particularly strong June for renewable energy generation.

“If we can accelerate the delivery of new wind and solar farms, we can continue to reduce our reliance on imported fossil fuels and put money back in people’s pockets.”  

The report confirms that wind energy generated 939 GWh in June, up from 771 GWh during the same month last year.

The average wholesale price of electricity per megawatt hour dropped for the fifth month in a row to €95.21, the report found, marking the first time average wholesale prices have dropped under €100 so far this year and the lowest since April 2024.

On the days with the most wind power, the average cost of a megawatt-hour of electricity last month was €67.15, but this rose to €115.06 on days when fossil fuels were almost entirely relied on.

“Affordability is critically important to Irish families and businesses," Mr Cunniffe added. 

“Every time a wind turbine or a set of solar panels is generating electricity, it is pushing down wholesale electricity prices and increasing our supply of clean energy.” 

Based on data provided by Green Collective, Kerry wind farms provided more electricity than any other county last month, with 105 GWh of power, around 11% of the country’s wind energy. This was followed by Cork (83 GWh), then Mayo (65 GWh), Galway (64 GWh) and Offaly (61 GWh).

“Last year, wind farms like those in Kerry, Cork and Mayo helped Ireland save more than €1.2bn on gas spending," said Mr Cunniffe. 

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

“To meet the needs of our growing economy, we need to accelerate the delivery of new wind farms, and we are committed to working with the Government to help make this happen.”