The US natural gas market has worked to lower inventories and bring prices up this year, but a warm 2024-25 winter may once again keep storage levels elevated in the new year.
US natural gas inventories at the end of the 2023-24 winter season were well above average due to minimal heating demand caused by mild winter weather and robust US production. Storage levels ended the season on 29 March at 2.259 Tcf (64bn m³) — 39pc higher than the five-year average and 23pc higher than a year earlier.
The higher inventories pushed down gas prices by minimizing concerns about supply shortfalls and disincentivized production this year, as large natural gas producers such as Chesapeake Energy and EQT reduced output on low prices and minimal expected demand.
These interventions helped reduce the supply glut. Total US gas inventories for the week ending 1 November were 3.932 Tcf, entering the 2024-25 winter season only 6pc higher than the five-year average and 4pc higher than a year earlier. In addition, the US Energy Information Administration (EIA) predicted in its November Short Term Energy Outlook (STEO) that production in 2025 would be up 1pc from 2024 as lower inventories push up prices and once again incentivize production.
EIA estimates that demand this winter will exceed last year's levels and keep inventories only just above average. According to December's STEO, inventories are expected to be 1.92 Tcf at the end of March 2025, only 2pc higher than the five-year average.
However, the mild weather that has covered much of the country this November and December risks once again sharply cutting into heating demand, leaving inventories at the start of 2025's spring injection season high enough to again put downward pressure on gas prices.
Heating demand in November was 12pc below the seasonal average, according to the National Weather Service (NWS). The mild weather caused prices at the Henry Hub, the US benchmark, to average roughly $2/mmBtu in November. However, EIA's December STEO predicted that prices at the Henry Hub would average just under $3/mmBtu for the rest of the winter heating season on expectations for cold weather.
That cold weather has yet to fully materialize. While demand in the first week of December was 20pc higher than average on cold snap, temperatures since then have been above seasonal norms, with heating demand in the week ending 20 December landing at 22pc below average and demand in the week ending 28 December expected to be 26pc below average.
If below-average demand continues into 2025, it is unlikely that inventories will drop as much as forecast. Prices this winter would be close to $3/mmBtu if withdrawals this season are close to 2.1 Tcf, East Daley Analytics senior director Jack Weixel said in September. US inventories had that level of withdrawal in winter from 2020-22.
However, if temperatures this winter are once again well above average, Weixel said inventories could end the season more than 530 Bcf above average, cutting average prices to $2.50/mmBtu and undoing price from the smaller-than-average injection season.
Prices may be especially pressured by rising production in the Permian basin of west Texas and southeastern New Mexico. Since most of the gas output from the Permian comes from oil wells, low gas prices may not affect production, as drilling decisions there are influenced by oil production rather than gas production.
Prices may still rally this winter if temperatures dip low enough in January and February, offsetting the mild weather of November and December. In addition, the rise of LNG exports next year may boost demand and subsequently raise prices. Several LNG projects or expansions are currently underway in the US with the Golden Pass export terminal, the Plaquemines export terminal and the stage 3 expansion at Cheniere's Corpus Christi liquefaction terminal all expected to start up in 2025.
