Storage Inventories

Strength in domestic production in 2010 led to record-setting inventories in underground storage at the end of the injection season. At the end of October, working natural gas in storage totaled 3,847 Bcf, the highest monthly level on record.⁹ Demonstrated peak working gas capacity also increased in 2010 to 4,049 Bcf. Working gas design capacity, a less conservative measure of capacity, also increased to 4,353 Bcf from 4,313 Bcf in 2009.

Despite the high inventory levels recorded October 2010, high consumption and withdrawals in late November and December actually resulted in a net withdrawal of about 5 Bcf during 2010,compared with net injections of about 349 Bcf during 2009.

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Footnotes