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Natural Gas Days of Supply

6 Months   1 Year   3 Years   Max
Last update: January 23, 2019, 7:02 EST
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Days of supply (DoS) is a measure of the adequacy of natural gas inventories. DoS is one of the most important fundamental indicators and serves as a key measure of market conditions. Essentially, it shows the number of days it will take to run out of natural gas in storage should production come to a standstill. While such a scenario is highly unlikely, the key here is not the number itself, but how it compares with history. A peak in the DoS usually occurs at the end of injection season, when storage inventories are seasonally high before winter. The bottom is reached in March when heating demand is weakening. As a general rule, natural gas prices get softer when DoS indicator is rising above the norm. Likewise, one can expect prices to increase when DoS indicator is getting below the norm. Remember, however, that markets are forward-looking. 

Data is available from January 1, 2015

Updated every weekday by 9 AM Eastern time. 

Source: U.S. Energy Information Administration, NOAA National Weather Service / Climate Prediction Center, Bluegold Research estimates and calculations


  • Actual - the number of days of supply on a specific date.
  • Norm - normal number of days of supply on a specific date; defined as simple arithmetic average over the last five years.
  • Previous year – actual number of days of supply from a year ago.
  • Forecast – estimated number of days of supply in future.  
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