Natural gas inventory
Every Thursday, the EIA (U.S. Energy Information Administration) publishes a natural gas inventory report for the previous week. The latest report is for the week ended November 6, 2015.
Throughout the year, natural gas is stored underground to save fuel for the peak demand during the winter. For the week ended October 23, 2015, natural gas inventory came in at 3,978 Bcf (billion cubic feet) compared to 3,928 Bcf a week earlier.
The inventory figure was higher than 3,558 Bcf recorded the year before and the five-year average of 3,782 Bcf. The change of 49 Bcf in the underground inventory during the week ended November 6 was in line with expectations of analysts surveyed by Bloomberg but lagged expectations of Citi Futures analysts.
Why is the EIA report important?
Commodity prices are a function of supply and demand. If demand rises while supply remains constant, prices rise because more customers are chasing each unit of a commodity.
In contrast, if supply rises for a given level of demand, prices fall because the commodity is available in abundance. Inventory levels reflect supply-and-demand trends, so they’re useful for getting a sense of natural gas prices.
Impact on coal
Natural gas inventory has risen over the past 28 weeks since the injection season started. A lower-than-expected inventory indicates lower-than-expected supply or higher-than-expected demand. This generally boosts natural gas prices. A rise in natural gas prices is positive for thermal coal producers because utilities (XLU) burn more coal when natural gas prices rise.
A fall in natural gas prices over the last few months has hurt coal producers (KOL), especially those with operations in the East and Midwest such as Alliance Resource Partners (ARLP), Natural Resources Partners (NRP), Arch Coal (ACI), and Peabody Energy (BTU).