Total gas demand in September 2025 was 9% lower compared with September 2024 (See Table 2B).
Gas demand by Power Plants, the largest energy users of networked gas representing 67% of total use in September 2025, saw a 12% decrease in demand when compared with September 2024 (See Table 2B).
Gas demand by Non-Daily Metered customers, who are largely domestic users and small businesses, showed a reduction in gas consumption in September 2025, down 3% compared with September 2024 (See Table 2B).
Imports were 4% lower in September 2025 compared with September 2024 while Indigenous Production was 19% lower. (See Table 1B).
In the first nine months of 2025, Indigenous Gas Production was down 16% and Imports were up 3% compared with the same period in 2024 (See Table A).
We have added monthly and annual PxStat Tables to the Networked Gas Daily Supply and Demand release. See Data page for the full list of PxStat tables.
Note that in Ireland, the Gas Day begins at 5am. 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 nine months of 2025, Imports were 2.7% higher and Indigenous Production was down 16.1% compared with the same period in 2024. Gas demand by Power Plants was 6% higher when comparing the 12-month rolling period of October 2024-September 2025 with October 2023-September 2024 (See Table A).
| Table A: Networked Gas Supply and Demand Percentage Change September 2025 | ||
| Category | Year-to-Date January-September 2025/2024 | 12-Month Rolling Period October-September 2025/2024 |
| Total Networked Gas Supply | -1.3% | 2.5% |
| Indigenous Gas Production | -16.1% | -15.5% |
| Gas Imports | 2.7% | 7.5% |
| Total Networked Gas Demand | -0.9% | 2.9% |
| Power Plants | 1.0% | 6.0% |
| Non-Daily Metered | -7.6% | -5.0% |
| Large Daily Metered | 2.0% | 2.4% |
| Daily Metered | -4.6% | -2.0% |
In September 2025, Imports represented 81% of total gas supply with Indigenous Production accounting for the remaining 19%. In comparison, Imports in September 2018, represented 43% of total gas supply with Indigenous Production accounting for the remaining 57% (See Figure 1 and Table 1B).
In September 2025, gas demand by Power Plants was 12% lower compared with September 2024. The lowest consecutive days of daily gas demand by Power Plants in September 2025 occurred on 11 September – 12 September. 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 (30 January 2026) published Networked Gas Daily Supply and Demand September 2025.
Commenting on the release, Dympna Corry, Statistician in the Climate and Energy Division, said: “Total gas demand in September 2025 was 9% lower compared with September 2024 (See Table 2B).
Power Plants, which are the largest consumers of networked gas, showed a 12% decrease in consumption in September 2025 compared with September 2024 (See Table 2B).
Gas demand by Non-Daily Metered customers, who are largely domestic users and small businesses, showed a reduction in gas consumption in September 2025, which was down 3% compared with September 2024 (See Table 2A).
In September 2025, Power Plants accounted for 67% of total gas demand, while Large Daily Metered customers represented 14% of total gas demand (See Table 2A).
Imports were 4% lower in September 2025 compared with September 2024. Indigenous Production was 19% lower in September 2025 compared with September 2024 (See Table 1B).
In the first nine months of 2025, Indigenous Gas Production was down 16% and Imports were up 3% compared with the same period in 2024 (See Table A).
During the first nine months of 2025, gas demand by Non-Daily Metered customers, who are largely domestic users and small businesses, was 8% lower compared with the same period in 2024, whereas gas demand by Power Plants was 1% higher compared with the same period in 2024 (See Table A).”