Gas demand declines in February as wind generation increases

Gas Networks Ireland reports a significant decrease in gas demand in February 2025, reflecting both milder temperatures (1) and strong wind energy generation. Overall gas demand fell by 26 per cent compared to January and was down by 3 per cent on February 2024. 

 

Despite the drop in overall demand, gas remained a critical component of Ireland’s energy mix, particularly as the reliable back up when wind generation dips. Gas produced 31 per cent of the country’s electricity in February, down from 44 per cent in January and 35 per cent in February 2024. 

 

Gas’s contribution to electricity generation peaked at 63 per cent, never falling below 11 per cent, demonstrating its ongoing reliability (2). Between February 27th and 28th, for example, gas produced 49 per cent of electricity, while wind accounted for just 17 per cent. 

 

Wind energy had a strong month, contributing 48 per cent of Ireland’s electricity supply. Wind generation peaked at 78 per cent but also fell below 1 per cent on occasion, highlighting the variability of renewable energy sources2.  

 

The use of gas in transport continues to grow, with demand for compressed natural gas (CNG) and its renewable equivalent, BioCNG, increasing by 85 per cent year-on-year in February. This reflects the growing interest in lower-emission fuel alternatives for heavy transport and logistics. 

 

Commenting on the latest gas demand data, Edwina Nyhan, Gas Networks Ireland’s Director of Strategy and Regulation, said: 

 

“February, typically one of the windiest months of the year, saw wind energy surpass gas in electricity generation. However, the fluctuations in wind generation throughout the month reinforced the essential role of gas as a reliable and flexible back up for renewable energy sources like wind for Ireland. 

 

While wind reached significant highs, it also dropped to extremely low levels, at times contributing less than one per cent of electricity generation. In contrast, gas remained consistently available, ensuring a stable energy supply when wind output was low. At no point did gas generation fall below 11 per cent, and it often stepped up significantly to maintain grid stability.” 

 

Gas Networks Ireland is on a pathway to a net zero carbon gas network and continues to support Ireland’s transition to a low carbon energy system while ensuring the security and stability of the country’s energy supply.