Wind generation in Ireland was the highest on record for the month of June, according to a new report from Wind Energy Ireland (WEI).
The monthly wind energy report revealed that the share of electricity demand met by Irish wind farms in June, at 30%, was up slightly when compared to June 2024 and was also a record month for Irish solar farms.
The report also shows that the demand for electricity during June increased marginally from 3019GWh to 3151GWh in the same month last year.
WEI chief executive Noel Cunniffe 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 month for renewable energy generation.
“Our wind farms are Ireland’s leading source of renewable electricity, playing a key role in reducing our dependency on imported fossil fuels and boosting Ireland’s energy security.
“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.”
Meanwhile, WEI revealed that the average wholesale price of electricity per megawatt hour dropped for the fifth month in a row to €95.21. This is the first time average wholesale prices have dropped under €100 so far this year and the lowest since April 2024.
On days last month with the most wind power, the average cost of a megawatt-hour of electricity was €67.15 but this rose to €115.06 on days when the country relied almost entirely on fossil fuels.
Cunniffe added: “Affordability is critically important to Irish families and businesses. Since 2000, renewable energy has saved electricity consumers nearly €1bn according to recent research by Baringa. It is clean, it is secure and it supports communities in rural Ireland.
“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 105GWh of power, around 11% of the country’s wind energy. Kerry was followed by Cork (83GWh), then Mayo (65GWh), Galway (64GWh) and Offaly (61GWh).
Cunniffe said: “Last year, wind farms like those in Kerry, Cork and Mayo helped Ireland save more than €1.2bn on gas spending.
“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.”
The report confirms that wind energy generated 939GWh in June, up from 771GWh during the same month last year.
The results of the report are based on EirGrid’s SCADA data compiled by MullanGrid, market data provided by ElectroRoute and county-level wind generation data provided by Green Collective.