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Total gas demand in May 2025 was 3,798 gigawatt hours (GWh), which was 15% lower than the May 2024 figure of 4,450 GWh (See Table 2B).
Gas demand in May 2025 by Non-Daily Metered Customers, at 407 GWh, was 23% lower compared with May 2024. This was the lowest Non-Daily Metered gas demand recorded for the month of May since the time series began in 2018 (See Table 2B).
In May 2025, gas demand by Power Plants was 17% lower compared with May 2024 (See Table 2A).
In May 2025, Indigenous Gas Production and Imports were both down 15% compared with May 2024 (See Table 1B).
Imports represented 78% of total gas supply in May 2025, with Indigenous Gas Production from the Corrib gas field and biomethane plants accounting for the remaining 22% (See Table 1A).
In the first five months of 2025, Indigenous Gas Production was down 14% and Imports were up 1% compared with the same period in 2024 (See Table A).
We have changed the format of the monthly Networked Gas Daily Supply and Demand release, if you would like to provide feedback please use the feedback box to the right. We have also added monthly and annual PxStat Tables. See Data page for the full list of PxStat tables related to this release.
Note that in Ireland, the Gas Day begins at 5 am. Gas customer types are categorised based on their annual consumption. Power Plants are a subset of Large Daily Metered but for the purposes of this release we report Power Plants demand separately. In this release Large Daily Metered excludes Power Plants. See the Background Notes for the full definition of gas customer types.
In the first five months of 2025, Imports were 1.3% higher and Indigenous Production was down 14.2% compared with the same period in 2024. Gas demand by Power Plants was 4.3% higher when comparing the 12-month rolling period of June 2024-May 2025 with June 2023-May 2024 (See Table A).
| Table A: Networked Gas Supply and Demand Percentage Changes May 2025 | ||
| Category | Year-to-Date January-May 2025/2024 | 12-Month Rolling Period June-May 2025/2024 |
| Total Networked Gas Supply | -1.8% | 2.8% |
| Indigenous Production | -14.2% | -7.5% |
| Imports | 1.3% | 5.6% |
| Total Networked Gas Demand | -1.6% | 2.7% |
| Power Plants | 0.5% | 4.3% |
| Non-Daily Metered | -7.0% | -1.7% |
| Large Daily Metered | -1.2% | -0.1% |
| Daily Metered | -0.7% | 4.7% |
In May 2025, Imports represented 78% of total gas supply with Indigenous Production accounting for the remaining 22%. In comparison, Imports in May 2018, represented 36% of total gas supply with Indigenous Production accounting for the remaining 64% (See Figure 1 and Table 1B).
In May 2025, gas demand by Power Plants was 17% lower compared with May 2024. The three lowest days of daily gas demand by Power Plants in May 2025 occurred across 24-26 May. On days where there is more wind available, a smaller proportion of electricity is generated by power plants (See Figure 3 and Table 2B).
Comparing the year 2024 with 2023, networked gas demand was higher for each of the four customer types: Non-Daily Metered customers (+5%), Daily Metered customers (+5%), Large Daily Metered customers (+0.5%), and Power Plants (+2%) (See Table 3B).
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Statistician's Comment
The Central Statistics Office (CSO) has today (05 September 2025) published Networked Gas Daily Supply and Demand May 2025.
Commenting on the release, Deirdre Moran, Statistician in the Climate and Energy Division, said: "In the first five months of 2025, Indigenous Gas Production was down 14% and Imports were up 1% compared with the same period in 2024 (See Table A).
During the first five months of 2025, gas demand by Non-Daily Metered customers, who are largely domestic users and small businesses, was 7% lower compared with the same period in 2024 (See Table A).
Gas demand by Power Plants was 4.3% higher when comparing the 12-month rolling period of June 2024-May 2025 with June 2023-May 2024 (See Table A).
May 2025 Trends
Total gas demand in May 2025 was 3,798 gigawatt hours (GWh), which was 15% lower than the May 2024 figure of 4,450 GWh (See Table 2B).
In May 2025, gas demand by Power Plants was 17% lower compared with May 2024 (See Table 2A).
In May 2025, Power Plants accounted for 69% of total gas demand, while Non-Daily Metered customers represented 11% of total gas demand (See Table 2A).
In May 2025, Indigenous Gas Production and Imports were both down 15% compared with May 2024 (See Table 1B)."