Sky-high prices for oil and gas, caused in part by sanctions on Russia for its war in Ukraine, have forced electricity-producing utilities to return to coal as a way of trying to satisfy consumer demand. Coal has ridden on the coattails of its fellow fossil fuels, up 250% over the past 12-months to a near-record US$412 a tonne for high-quality thermal material, with a 36% of that rise coming over the past month alone.