Lost Renewable Power Outweighs Half a Million Homes in Irish Grid Limit Figures
New figures from EirGrid show that enough renewable electricity to power roughly 496,000 Irish homes was lost during the first nine months of the year due to limitations on the electricity system. The data reveals that more than 13% of available wind and solar generation in the Republic of Ireland could not be used during this period.
The issue starkly contrasts with the rapid expansion of clean energy generation across the country. Renewables accounted for half of all electricity generated last year, and connected solar capacity has now surpassed three gigawatts. Wind and solar sources also supplied approximately 42% of Ireland’s electricity last month, proving that domestic green power can operate at a massive scale.
Battery Storage Projects Face Costly Delays Across the National Grid
Industry leaders argue that the mounting volume of lost clean electricity exposes the urgent necessity of deploying large-scale battery storage. These systems capture surplus power during peak generation windows and discharge it back onto the grid during high-demand periods. Energy Storage Ireland Director Bobby Smith warned that delaying these infrastructure projects ultimately inflates energy bills for consumers.
Smith called on the Government to remove unnecessary costs and barriers that currently slow down battery project rollouts. Combining battery installations with existing renewable generators allows developers to maximize current grid connections while salvaging clean electricity that would otherwise go unused.

Industry Executives Push for Energy Independence and Unified Grid Infrastructure
Noel Cunniffe, Chief Executive of Wind Energy Ireland, stated that the country holds the capability to transition into an energy-independent state fueled by affordable domestic power. He noted that capturing wasted green energy would cut household bills, decrease reliance on imported fossil fuels, and generate thousands of skilled nationwide jobs.
Solar Ireland Chief Executive Ronan Power emphasized that solar, wind, battery storage, and the electricity grid must be developed as one connected system. The upcoming two-day Renewable Energy Expo at the RDS in Dublin—jointly organized by Wind Energy Ireland, Solar Ireland, and Energy Storage Ireland—will serve as the first shared national platform uniting these three sectors.
Frequently Asked Questions About Ireland’s Wasted Renewable Energy
How much renewable electricity was lost in Ireland this year?
More than 13% of available wind and solar electricity was lost during the first nine months of the year, amounting to enough energy to power roughly 496,000 homes.
What is causing the loss of wind and solar power on the Irish grid?
The losses are driven by limitations in the electricity system’s capacity to accommodate high volumes of renewable power when it is actively generated.
How does battery storage solve grid capacity problems?
Battery storage absorbs surplus electricity during periods of high renewable generation and releases that stored power back onto the grid when it is needed.
What percentage of Ireland’s electricity came from wind and solar last month?
Wind and solar generation together supplied approximately 42% of Ireland’s total electricity last month.
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