Ireland’s wind farms deliver one of their strongest January performances on record

Ireland’s wind energy sector delivered one of its strongest January performances on record, helping to curb electricity prices despite unprecedented demand driven by colder temperatures, according to the latest data released by Wind Energy Ireland.

Wind farms supplied 34% of Ireland’s total electricity generation last month, producing approximately 1,400 gigawatt-hours (GWh). This surge in renewable output came as electricity demand reached a January record of 4,087 GWh, largely due to increased heating needs across homes and businesses.

Despite the spike in demand, wholesale electricity prices fell significantly, averaging €126.95 per megawatt-hour (MWh), down from €167.51/MWh in January 2025. On days with the highest wind generation, average prices dropped further to €101.84/MWh, highlighting the cost-saving impact of renewable energy.

In contrast, prices rose sharply to €145.84/MWh on days when electricity production relied almost entirely on imported fossil fuels, underlining the role of wind power in reducing exposure to volatile international energy markets.

However, the report from energy consultancy Baringa also points to grid capacity constraints as a major barrier to unlocking further savings. Limited network capacity meant that some wind farms were unable to generate power at times, despite strong wind conditions.

According to Infranua’s county-level data, Offaly ranked as Ireland’s top wind energy producer in January, generating 179 GWh, followed by Kerry (168 GWh), Cork (155 GWh) and Tyrone (138 GWh). Tipperary completed the top five with 111 GWh.

Commenting on the figures, Noel Cunniffe, CEO of Wind Energy Ireland, said that while January’s results demonstrate the clear benefits of wind power, greater investment in the electricity grid is urgently needed.

“Every time clean electricity is wasted due to grid constraints, consumers pay more for dirtier, imported energy,” Cunniffe said. “Strengthening our electricity network is essential if we are to fully enjoy the benefits of Ireland’s renewable resources and to protect families and businesses from fossil fuel price volatility.”

The January wind energy report is based on SCADA data from EirGrid, compiled by MullanGrid, market data provided by ElectroRoute, and wind generation figures supplied by Infranua.