Tyler Durden at zerohedge.com has the following:

"A similar story is playing out in the U.S., where increased demand for coal might not be reached by mining companies. We noted Thursday morning that boosting output might be challenging due to years of decommissioning mines to reduce carbon emissions and transition the economy from fossil fuels to green energy. There's also been a steady decline of miners over the last three and a half decades. 

"That whole supply chain is stretched beyond its limits," Thrasher said. "It's going to be a challenging winter for us here in the United States."

Utility company Duke Energy Corp.'s Piedmont Natural Gas unit, covering North and South Carolina customers, warned power bills this winter are set to rise due to high natgas prices and low production. 

A pure-play coal company that is already benefiting from the demand surge and rising prices is Peabody Energy Corporation. As cooler weather fast approaches, the company may see increased demand for its thermal coal that utility companies use to produce electricity. On a technical basis, a so-called bullish "golden cross" was just triggered."

Energy Crisis May Unleash Winter Blackouts Across US, Insider Warns