The traditional inventory–building season is April to October for natural gas. The volume of working gas in underground storage by November 1 has to meet winter's demands under any circumstance. The volume in storage in July was approximately 69 percent of storage capacity.
In July 2019, Nebraska had the capacity to store 12,653 million cubic feet (mmcf) of working natural gas or working gas, and there was 8,707 mmcf working gas according to Energy Information Administration estimates. As shown in Figure 1 and the data table below, this volume of working gas was an increase of 1,185 mmcf from last month and 1,584 mmcf higher than last year at this time. Stocks were 207 mmcf lower than the five–year average. Figure 1 also shows that the volume of working gas was centered in the five–year range.