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Weekly Natural Gas Storage Report

for week ending September 26, 2025   |   Released: October 2, 2025 at 10:30 a.m.   |   Next Release: October 9, 2025

Working gas in underground storage, Lower 48 states Summary text CSV JSN
    Historical Comparisons
Stocks
billion cubic feet (Bcf)
  Year ago
(09/26/24)
5-year average
(2020-24)
Region 09/26/25 09/19/25 net change implied flow   Bcf % change Bcf % change
East 832     807     25     25       842     -1.2     815     2.1    
Midwest 972     945     27     27       1,009     -3.7     973     -0.1    
Mountain 269     266     3     3       282     -4.6     227     18.5    
Pacific 302     300     2     2       293     3.1     275     9.8    
South Central 1,186     1,190     -4     -4       1,113     6.6     1,101     7.7    
   Salt 292     299     -7     -7       261     11.9     267     9.4    
   Nonsalt 894     890     4     4       852     4.9     834     7.2    
Total 3,561     3,508     53     53       3,540     0.6     3,390     5.0    
Totals may not equal sum of components because of independent rounding.


Summary

Working gas in storage was 3,561 Bcf as of Friday, September 26, 2025, according to EIA estimates. This represents a net increase of 53 Bcf from the previous week. Stocks were 21 Bcf higher than last year at this time and 171 Bcf above the five-year average of 3,390 Bcf. At 3,561 Bcf, total working gas is within the five-year historical range.

For information on sampling error in this report, see Estimated Measures of Sampling Variability table below.

Working Gas in Underground Storage Compared with Five-Year Range

Note: The shaded area indicates the range between the historical minimum and maximum values for the weekly series from 2020 through 2024. The dashed vertical lines indicate current and year-ago weekly periods.



Estimated measures of sampling variabilityDownload History (April 2015 to Present)
   
Coefficient of Variation for Stocks
% of working gas
  Standard Error for Net Change
billion cubic feet (Bcf)
Region 09/26/25 09/19/25   net change
East 0.6     0.6       0.2    
Midwest 0.8     0.8       0.4    
Mountain 3.2     3.1       0.2    
Pacific 0.0     0.0       0.0    
South Central 0.8     0.8       0.4    
   Salt 1.4     1.4       0.3    
   Nonsalt 1.0     1.0       0.3    
Total 0.4     0.4       0.6