US natgas prices ease ahead of storage report as LNG export flows hit 3-week low

Sempra

17/09/2026 15:03

Daily LNG feedgas falls to 17.5 bcfd, lowest in three weeks
Analysts forecast 49 bcf storage build for week ended September 11
European and Asian benchmarks hovered near 44-month highs around $26-$27 per mmBtu
So-called widow-maker spread underscores traders' confidence in ample winter inventories
By Scott DiSavino
NEW YORK, Sept 17 (Reuters) - U.S. natural gas futures eased on Thursday on a decline in daily flows to liquefied natural gas (LNG) export plants to a three-week low.
Front-month gas futures for October delivery NGc1 on the New York Mercantile Exchange fell 1.5 cents, or 0.5%, to $2.876 per million British thermal units (mmBtu).
Prices declined despite bullish forecasts for more demand over the next two weeks than previously expected and projections a federal report on Thursday will show that hot weather and high air conditioning demand last week caused energy firms to add less gas to storage than usual for this time of year.
Analysts forecast energy firms added 49 billion cubic feet (bcf) of gas to storage during the week ended September 11.
That compares with an increase of 87 bcf during the same week last year and a five-year (2021-2025) average increase of 74 bcf for the period. EIA/GAS NGAS/POLL
In a sign that the market is not too worried about gas supplies this winter, the premium of futures for March over April 2027 NGH27-J27 fell to a record low of around 11 cents per mmBtu.
Analysts have said March, the last month of the peak winter heating season when utilities pull gas out of storage to meet demand, should never trade below April, the first month of the summer air conditioning season when energy firms produce enough gas to meet demand and inject fuel into storage for the next winter.
The industry calls the March-April spread the "widow-maker" because rapid price moves resulting from changing weather forecasts have forced some speculators out of business. Notably, the Amaranth hedge fund lost more than $6 billion in 2006.
     
SUPPLY AND DEMAND
Financial firm LSEG said average gas output in the U.S. Lower 48 states rose to 113.1 billion cubic feet per day (bcfd) so far in September, up from a monthly record high of 112.2 bcfd in August.
Record output and mild weather have allowed energy firms to keep the amount of gas in inventory above the five-year (2021-2025) average since March.
Meteorologists forecast weather would remain mostly warmer through October 2, with power generators burning more gas than usual to keep air conditioners running. About 40% of U.S. power generation comes from gas-fired plants.
LSEG said average gas demand in the Lower 48 states, including exports, is expected to slide from 109.6 bcfd this week to 106.6 bcfd next week. Those forecasts were higher than LSEG's outlook on Wednesday.
Average gas flows to the nine big U.S. LNG export plants rose to 18.2 bcfd so far in September, up from 17.2 bcfd in August, but remained short of the monthly record high of 18.8 bcfd in April.
On a daily basis, however, LNG feedgas was on track to fall to a three-week low of 17.5 bcfd on Thursday due mostly to maintenance at U.S. energy firm Sempra Energy's SRE.N 2.0-bcfd Cameron LNG plant in Louisiana.
U.S. energy firm Berkshire Hathaway Energy, meanwhile, said it plans to start planned maintenance on its 0.8-bcfd Cove Point LNG export plant in Maryland over the next week or so.
Around the world, gas traded near 44-month highs of around $26 per mmBtu at the Dutch Title Transfer Facility TRNLTTFMc1 benchmark in Europe and $27 at the Japan-Korea Marker JKMc1 benchmark in Asia. NG/EU
Global gas prices have spiked in recent years primarily due to supply disruptions linked to Russia's invasion of Ukraine in 2022 and the Iran war this year.
Prices in the U.S., however, have not reacted much to the war in Iran because the U.S. produces all the gas it consumes domestically and U.S. LNG companies are already liquefying as much fuel as they can.
No matter how high global gas prices go, the U.S. cannot export much more LNG until units under construction enter service in coming months and years.
     
 
Week ended Sep 11 Forecast
Week ended  Sep 4 Actual
Year ago Sep 11
Five-year average (2021-2025) Sep 11
 
 
U.S. weekly natgas storage change (bcf):
+49
+40
+87
+74
 
U.S. total natgas in storage (bcf):
3,303
3,254
3,420
3,180
 
U.S. total storage versus 5-year average
+3.9%
+4.8%
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Global Gas Benchmark Futures ($ per mmBtu)
Current Day
Prior Day
This Month Last Year
Prior Year Average 2025
Five-Year Average (2021-2025)
Henry Hub NGc1
2.89
2.89
3.01
3.62
3.79
Title Transfer Facility (TTF) TRNLTTFMc1
26.17
26.02
11.13
11.94
18.51
Japan-Korea Marker (JKM) JKMc1
27.23
25.21
11.32
12.24
18.12
 
 
 
 
 
 
 
 
 
 
 
 
LSEG U.S. Global Forecast System (GFS) Heating, Cooling and Total Degree Days 
 
 
 
 
 
Total Two-Week Forecast
Current Day
Prior Day
Prior Year
10-Year Norm
30-Year Norm
U.S. GFS Heating Degree Days (HDD)
31
22
6
34
54
U.S. GFS Cooling Degree Days (CDD)
123
136
138
118
89
U.S. GFS Total Degree Days (TDD)
154
158
144
152
143
 
 
 
 
 
 
LSEG U.S. Weekly GFS Supply and Demand Forecasts
 
 
 
 
 
 
Prior Week
Current Week
Next Week
This Week Last Year
Five-Year (2021-2025) Average for Month
U.S. Supply (bcfd)
 
 
 
 
 
U.S. Lower 48 Dry Production
113.8
112.5
112.5
107.2
101.5
U.S. Imports from Canada
7.0
6.5
7.3
N/A
7.7
U.S. LNG Imports
0.0
0.0
0.0
0.0
0.0
Total U.S. Supply
120.8
119.0
119.8
N/A
109.2
 
 
 
 
 
 
U.S. Demand (bcfd)
 
 
 
 
 
U.S. Exports to Canada
2.5
2.4
2.4
N/A
2.3
U.S. Exports to Mexico
7.6
7.4
7.7
N/A
6.8
U.S. LNG Export Feedgas
18.4
18.2
17.8
16.0
12.6
U.S. Commercial
4.7
5.0
5.3
4.7
5.0
U.S. Residential
3.6
3.8
4.3
4.0
3.9
U.S. Power Plant
45.3
43.1
39.3
40.9
38.4
U.S. Industrial
21.8
21.9
22.0
22.0
22.1
U.S. Plant Fuel
5.6
5.6
5.6
5.6
5.3
U.S. Pipe Distribution
2.2
2.2
2.1
2.2
2.9
U.S. Vehicle Fuel
0.1
0.1
0.1
0.1
0.2
Total U.S. Consumption
83.5
81.6
78.7
79.5
77.8
Total U.S. Demand
112.0
109.6
106.6
N/A
99.5
 
 
 
 
 
 
N/A = Not Available
 
 
 
 
 
 
 
 
 
 
 
U.S. Northwest River Forecast Center (NWRFC) at The Dalles Dam (fiscal year ending September 30)
2026 Current Day % of Normal Forecast
2026  Prior Day % of Normal Forecast
2025 % of Normal Actual
2024 % of Normal Actual
2023 % of Normal Actual
Apr-Sep 
83
83
76
74
83
Jan-Jul
90
90
78
76
77
Oct-Sep
93
93
80
77
76
 
 
 
 
 
 
U.S. weekly power generation percent by fuel - EIA
 
 
 
 
 
 
Week ended Sep 18
Week ended Sep 11
2025
2024
2023
Wind
11
8
11
11
10
Solar
8
8
6
5
4
Hydro
4
4
6
6
6
Other
2
1
1
1
2
Petroleum
0
0
0
0
0
Natural Gas
42
43
40
42
41
Coal
17
18
18
16
17
Nuclear
17
17
18
19
19
 
 
 
 
 
 
SNL U.S. Natural Gas Next-Day Prices ($ per mmBtu)
 
 
 
 
 
Hub
Current Day
Prior Day
This Month Last Year
Prior Year Average 2025
Five-Year Average (2021-2025)
Henry Hub NG-W-HH-SNL
3.00
2.97
2.97
3.52
3.72
Transco Z6 New York NG-CG-NY-SNL
1.78
1.59
1.85
3.53
3.56
PG&E Citygate NG-CG-PGE-SNL
3.74
3.73
3.74
3.42
5.47
Eastern Gas (formerly Dominion South) NG-PCN-APP-SNL
1.68
1.56
1.75
2.79
2.96
Chicago Citygate NG-CG-CH-SNL
2.82
2.78
2.81
3.23
3.60
Algonquin Citygate NG-CG-BS-SNL
2.50
2.38
2.18
6.08
5.04
SoCal Citygate NG-SCL-CGT-SNL
3.87
3.69
3.11
3.60
5.71
Waha Hub NG-WAH-WTX-SNL
1.77
1.79
-0.06
1.03
2.88
AECO NG-ASH-ALB-SNL
1.09
1.04
0.22
1.13
2.13
 
 
 
 
 
 
Intercontinental Exchange (ICE) U.S. Power Next-Day Prices ($ per megawatt-hour)
 
 
 
 
 
Hub
Current Day
Prior Day
This Month Last Year
Prior Year Average 2025
Five-Year Average (2021-2025)
New England E-NEPLMHP-IDX
55.83
46.93
38.84
77.12
61.67
PJM West E-PJWHRTP-IX
229.74
117.40
51.24
60.23
54.47
Mid-Columbia (Mid C) W-MIDCP-IDX
51.47
56.45
56.16
44.81
68.96
Palo Verde W-PVP-IDX
38.50
37.90
38.04
34.82
59.94
South Path-15 (SP-15) W-SP15-IDX
34.01
32.24
36.05
28.44
53.02
     

(Reporting by Scott DiSavino)
((scott.disavino@thomsonreuters.com; +1 332 219 1922; Reuters Messaging: scott.disavino.thomsonreuters.com@reuters.net/))