After four straight weeks in the green, US natural gas prices were down this week amid steady supplies and easing weather-related momentum.
In the futures market, the Nymex front-month contract ended the week at $2.820 per million British thermal units on Friday, down from $2.939/MMBtu on Sep. 4.
Natural gas spot prices declined to $2.81/MMBtu on Wednesday, down $0.07/MMBtu, according to the US Energy Information Administration's Weekly Gas Storage Supplement, released on Thursday.
This was primarily attributed to diverging regional weather, with cooler-than-average temperatures in the West helping offset above-average temperatures across Texas and the Midwest, leading to a 1.5%, or a 1.5 billion cubic feet per day decline in power consumption demand, according to data from S&P Global.
Meanwhile, LNG export feedgas flows held steady at 19.6 Bcf/d, which was significantly above the 30-day moving average for this period, at 18.53 Bcf/d, according to the Bloomberg LNG Feedgas Model.
Total gas supply remained mostly flat over the week, with a 0.4 Bcf/d, or 7%, decline in imports from Canada offset by a 0.4 Bcf/d, or less than 1% increase in domestic dry gas output.
Net injection into storage for the week ended Sep. 4 was 40 Bcf, up from last week's 30 Bcf, bringing total working gas inventories to 3,254 Bcf, according to the EIA's weekly inventory data.
The net build was ahead of forecasts at 35 Bcf but well below last year's 71 Bcf and the five-year average for this period, at 52 Bcf, according to data compiled by Investing.com, making it a fairly mixed storage build.
At 3,254 Bcf, inventories were 148 Bcf, or 5% above the five-year average for this period, but 79 Bcf, or 2% below the same time last year.
All regions reported a net injection during the week, barring South Central, which reported a net withdrawal of 7 Bcf. The East and Midwest led in injections, at 20 Bcf and 18 Bcf, respectively.
According to Pinebrook Energy Advisors, the storage data shows that weather is set to play "a reduced role as a price driver" as September progresses and temperatures begin to moderate, that is, before winter makes landfall, leading to significant heating gas demand.
A total of 36 LNG carriers departed US ports during the week, up by four from the prior week, with a total combined capacity of 137 Bcf, up 10 Bcf from last week.
The US gas rig count increased by two from 130 the previous week to 132 in the week ending Sep. 11, according to data from Baker Hughes (BKR) released Friday. That compares with 118 gas rigs in operation a year earlier.
The consolidated North American oil and gas rig count, a key early indicator of future production levels, increased by six to 798 from 792 the previous week.
In international markets, European TTF gas prices averaged $25.47/MMBtu for the week ended Sep. 9, $1.59/MMBtu above the prior week. Meanwhile, the Japan-Korea Marker averaged $24.30/MMBtu, about $0.97/MMBtu above the prior week.
Meanwhile, the EIA expects natural gas consumption in the electric power sector to reach a record in 2027 as electricity demand continues to grow, according to its monthly Short-Term Energy Outlook for July on Tuesday.
The agency forecasts that natural gas use for power generation will increase by 2% in 2026 and by another 4% in 2027, to a record 38.1 Bcf/d. Monthly demand is expected to reach an all-time high of 50.6 Bcf/d in July 2027.
Higher electricity demand, additional natural gas-fired generating capacity and relatively low natural gas prices will drive the increase, the EIA said.
US gas-fired capacity is expected to reach 508 gigawatts by the end of 2027, up 3% from 2025.
Summer natural gas demand for power generation is expected to average 42.2 Bcf/d this year, up 0.5 Bcf/d from summer 2025, before rising to 46.3 Bcf/d in summer 2027.
Renewable generation will supply much of the increase in electricity output, while gas plants will continue to meet peak demand, according to the STEO.
The EIA expects total US natural gas consumption to increase by 3.1 Bcf/d from 2025 to 2027, with the electric power sector accounting for 2.3 Bcf/d, or 7% of the increase.
Weather remains the biggest uncertainty, as hotter summer temperatures could further boost electricity demand.
Record Permian production should keep natural gas inventories above the five-year average and limit price gains, the agency said.
Working gas inventories are expected to reach 3,966 billion cubic feet by the end of October, 5% above the five-year average.
Above-average natural gas inventories heading into winter are expected to keep Henry Hub spot prices at $3.57/MMBtu in Q4 2026, down 5% from the same quarter a year earlier, the EIA said.
EIA forecasts the Henry Hub natural gas spot price will ease to $3.43/MMBtu in 2026 and $3.28/MMBtu in 2027, down from $3.53 in 2025, as robust production growth outpaces rising demand.