US energy companies added 64 billion cubic feet of natural gas to storage during the week ending September 25, 2026, matching market expectations. The increase exceeded the 56 bcf build during the same week in 2025 but fell short of the five-year average of 80 bcf. Total inventories reached 3.415 trillion cubic feet, 3.9% below year-ago levels and about 2.4% above the five-year average for the period. The latest injection also surpassed the 53 bcf added during the week ending September 18. Preliminary estimates indicate a further 79 bcf build for the week ending October 2, slightly above the 77 bcf increase during the comparable week in 2025 but below the five-year average of 96 bcf.