If you’ve been paying attention to the weekly rail traffic reports put out by the Association of American Railroads you may have noticed that in recent weeks and months coal traffic has been on the upswing.
In part that has followed in the wake of higher natural gas prices that have prompted some utilities to resume using coal to generate electricity.
Thus far this year, coal traffic has increased by 11.7 percent compared with the same period in 2020.
The U.S. Energy Information Administration predicts that coal will be used to create 24 percent of electricity generation in 2021 and 2022, up from 20 percent in 2020.
It is not, though, that utilities are giving up on natural gas, whose price has increased by 95 percent over the past six months. Natural-gas futures have risen to $5.10 per million British thermal units in recent days compared with $2.61 per million BTUs six months ago.
Instead, utilities are using coal as a supplement to natural gas for power generation as a hedge against higher gas prices.
And to be sure, coal loadings remain below 2019 levels. However, the evidence points toward greater use of coal at least in the short term.
Natural gas still accounts for a higher percentage of power generation, a projected average of 35 percent this year and 34 percent in 2022. In 2020, 39 percent of power generation came from natural gas.
Aside from higher gas prices, the supply of natural gas has been adversely affected by infrastructure issues.
Severe weather, including ice storms in Texas, hot and dry conditions in the West and damage caused by Hurricane Ida on the Gulf Coast last month has reduced natural gas production.
In mid September more than a third of the gas production in the Gulf region remained offline.
That comes at a time of year when utilities are stockpiling the natural gas supplies.
The federal energy administration said in mid September that U.S. storage gas supplies are 3,006 billion cubic feet, which is 231 BCF below the five-year average and 595 BCF lower than last year at this time.
That could drive natural gas prices even higher as utilities approach winter peak demand periods.
However, the coal industry has its own issues, including tight supplies and transportation constraints. The pandemic has caused delays in coal deliveries.
Industry observers don’t expect the number of unit coal trains to significantly increase nor do they expect many closed coal mines to reopen.
What they expect is for coal traffic to remain at a consistent above-average volume over the next several months. They don’t foresee an unprecedented rise in rail coal volume.
Railroads have stored some of the equipment once used to move coal and management may be reluctant to spend to put it back in service to handle what they view as a short-term opportunity.
Still the demand for coal is expected to rise next year by 100 million short tons and export coal is expected to increase by 21 million short tons.