US thermal coal prices are at levels few would have expected just a year ago — at record levels or multi-year highs.
Prompt quarter Powder River basin 8,800 Btu/lb coal was assessed last week at a new record of $30.25/short ton (st). Illinois basin 11,500 Btu/lb coal also reached an all-time high of $86/st fob barge last week.
Appalachian, western bituminous and Uinta basin coal, meanwhile, have reached prices last seen in 2008 and 2009.
The current state of prices is markedly different than in the middle of last year, when near-historic low gas prices, high coal inventories at power plants and Covid-19 pandemic mitigation measures weighed on coal demand and brought coal prices to multi-year lows.
Market participants were expecting some recovery as economies emerged from the initial shocks of the pandemic. And most US coal prices rose steadily from July 2020-May 2021. Prompt quarter CSX 12,500 Btu/lb coal increased to $56.30/st from $34.60/st. Illinois basin 11,500 Btu/lb coal climbed by $6/st to $37.50/st, and Pittsburgh Seam 13,000 Btu/lb 4.5lb SO2/mmBtu coal rose to $40.10/st from $34.30/st.
But price gains started to accelerate in June as a rebound in electricity generation, rising natural gas prices and declining coal stocks pushed demand higher. Lucrative export markets has put upward pressure on US coal prices as well.
US coal supply has not kept pace with demand for various reasons. In addition to increased export demand, some coal sellers say a lack of capital and investment has prevented them from significantly scaling up production. Others point toward difficulty finding workers.
The price of prompt quarter Pittsburgh Seam 13,000 Btu/lb 4.5lb SO2/mmBtu coal more than doubled since the end of May, to $105/st last week. Some Illinois basin and Powder River basin coal prices also have more than doubled.
Supportive coal margins
Market conditions suggest coal consumption could remain elevated this winter. The spark spread for winter generation dispatch of 10,000 Btu/kWh coal units at the western hub of the PJM Interconnection reached a record $78.26/MWh on 8 October and has averaged $61.18/MWh since late September. Natural gas margins at the hub have averaged $26.56/MWh.
Coal spark spreads for winter power generation at some Midcontinent Independent System Operator and the Electric Reliability Council of Texas (ERCOT) hubs are also higher than gas margins. The season one coal spark spread at ERCOT North averaged $59.81/MWh from 29 September-18 October, which was $12.41/MWh higher than gas. At the Northern Illinois hub, the coal and gas spark spreads averaged $46.60/MWh and $28.12/MWh, respectively.
Recent forecasts from the US Energy Information Administration (EIA) and the Natural Gas Supply Association suggest lower-than-average gas inventories and that the US economic boom will put upward pressure on US gas prices this winter. Absent market changes, the US could have its highest gas prices since the 2007-08 winter, when prices averaged $8.05/mmBtu and the shale drilling boom had yet to take off.
But recent sharp gains in US coal prices are putting pressure on generation profitability. The season one coal spark spread at PJM West fell by 17pc last week compared with a week earlier, to an average of $56.69/MWh. That was more than four times the 3.9pc decrease in power prices. Gas margins dropped by 10pc to $25.99/MWh.
Average coal winter season spark spreads at the Northern Illinois hub and ERCOT North fell by 12pc and 3pc, respectively, last week from a week earlier. Over the same time frame, natural gas margins fell by 4pc at the Northern Illinois hub and rose by 4pc in ERCOT North.
The difference between season one coal and gas margins continued to shrink on 18 October. Coal margins at ERCOT North fell by nearly $9/MWh from the previous trading day, to $51.31/MWh. The gas spark spread dropped by less than $1/MWh to $48.86/MWh.
After consuming more coal than they have received, US coal buyers have said in recent weeks that they plan on conserving coal stocks and managing coal burn levels ahead of this winter because of limited supply. And if inventories run too low, they say they may burn more gas instead despite higher prices for the fuel.
Uncertainty also looms over the medium-term outlook for US coal. Last week, EIA lowered its 2022 coal consumption forecast for the US by 4.6pc to 540mn st (490 metric tonnes), saying that tight coal supply and low coal stocks could limit coal-fired generation.
