Weekly Natural Gas Storage Report
for week ending May 15, 2026 | Released: May 21, 2026 at 10:30 a.m. | Next Release: May 28, 2026
| Working gas in underground storage, Lower 48 states Summary text CSV JSN | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Historical Comparisons | |||||||||||||||||||||||||
| Stocks billion cubic feet (Bcf) |
Year ago (05/15/25) |
5-year average (2021-25) |
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| Region | 05/15/26 | 05/08/26 | net change | implied flow | Bcf | % change | Bcf | % change | |||||||||||||||||
| East | 419 | 388 | 31 | 31 | 427 | -1.9 | 413 | 1.5 | |||||||||||||||||
| Midwest | 505 | 476 | 29 | 29 | 507 | -0.4 | 503 | 0.4 | |||||||||||||||||
| Mountain | 210 | 206 | 4 | 4 | 191 | 9.9 | 150 | 40.0 | |||||||||||||||||
| Pacific | 286 | 279 | 7 | 7 | 243 | 17.7 | 214 | 33.6 | |||||||||||||||||
| South Central | 972 | 941 | 31 | 31 | 990 | -1.8 | 962 | 1.0 | |||||||||||||||||
| Salt | 298 | 285 | 13 | 13 | 319 | -6.6 | 292 | 2.1 | |||||||||||||||||
| Nonsalt | 673 | 656 | 17 | 17 | 670 | 0.4 | 670 | 0.4 | |||||||||||||||||
| Total | 2,391 | 2,290 | 101 | 101 | 2,358 | 1.4 | 2,242 | 6.6 | |||||||||||||||||
| Totals may not equal sum of components because of independent rounding. |
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Summary
Working gas in storage was 2,391 Bcf as of Friday, May 15, 2026, according to EIA estimates.
This represents a net increase of 101 Bcf from the previous week. Stocks were 33 Bcf higher than last year at this time and 149 Bcf above the five-year average of 2,242 Bcf.
At 2,391 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.
Note: The shaded area indicates the range between the historical minimum and maximum values for the weekly series from 2021 through 2025. 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) |
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| Region | 05/15/26 | 05/08/26 | net change | ||||||||
| East | 0.9 | 0.9 | 0.2 | ||||||||
| Midwest | 0.9 | 1.0 | 0.5 | ||||||||
| Mountain | 1.1 | 1.1 | 0.2 | ||||||||
| Pacific | 0.0 | 0.0 | 0.0 | ||||||||
| South Central | 0.8 | 0.8 | 0.6 | ||||||||
| Salt | 1.0 | 1.0 | 0.4 | ||||||||
| Nonsalt | 1.1 | 1.0 | 0.5 | ||||||||
| Total | 0.4 | 0.4 | 0.8 | ||||||||