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US Natural Gas Prices Dip on Higher Inventory Build

By Markets Desk · 2026-09-12 · 2 min read
A large industrial natural gas storage tank facility with pipes and valves
Illustration: Tradingbird

Nymex natural gas contracts fell 0.11% Friday after EIA data showed a 40 Bcf inventory build, exceeding market estimates.

October Nymex natural gas futures closed down 0.003 dollars on Friday. The decline represents a 0.11% drop from the previous session. Traders reacted to the latest Energy Information Administration storage data. The report confirmed a larger-than-expected addition to US gas stocks.

The EIA recorded a 40 billion cubic foot increase for the week ended September 4. Analysts had projected a build of 34 billion cubic feet. The actual figure was below the five-year weekly average of 52 billion cubic feet. Total inventories now sit 4.8% above the five-year seasonal average.

Production and Demand Metrics

US dry gas production reached 113.8 billion cubic feet per day on Friday. This marks a 4.4% year-over-year increase according to BNEF. Domestic gas demand in the lower 48 states rose 7.5% year-over-year to 75.8 billion cubic feet per day. LNG net flows to export terminals were estimated at 19.8 billion cubic feet per day.

Electricity output in the lower 48 states climbed 19.69% year-over-year in the week ending September 5. The Edison Electric Institute reported total generation of 100,302 gigawatt hours. Over the past 52 weeks, US electricity generation rose 3.00% to 4,392,478 gigawatt hours. These figures indicate sustained industrial and residential energy consumption.

Weather Outlook and Storage Projections

The Commodity Weather Group forecasts above-average temperatures across the South and Southeast through September 20. Warm weather typically boosts electricity demand for air conditioning. However, a potential Super El Niño event could reduce heating demand this winter. This seasonal shift poses a medium-term headwind for gas prices.

The EIA projects US gas storage will peak at 3,985 billion cubic feet by end of October. This level would be the highest in ten years and 5% above the seasonal norm. The agency also raised its 2027 production estimate to 116.0 billion cubic feet per day. Europe’s gas storage stands at 67% capacity, significantly below the 84% five-year average.

Market Sentiment and Supply Balance

The inventory build signals adequate supply conditions for the US market. Prices remain supported by warm weather forecasts but pressured by high storage levels. GN markets/commodities (en-US) notes the divergence between regional demand and global supply. European storage levels remain low compared to historical benchmarks.

Investors monitor the balance between production growth and consumption patterns. The 4.8% above-average inventory level reduces the risk of supply shortfalls. Future price direction will depend on weather trends and LNG export volumes. The current data supports a view of balanced global gas markets.

Based on reporting by Yahoo Finance, compiled by the Tradingbird desk.

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