Last summer, nearly half of India’s sweltering population suddenly found the electricity shut off. Air-conditioners whirred to a stop. Refrigerators ceased cooling. The culprits were outmoded power generation stations and a creaky electricity transmission grid.
But another problem stood out. India relies on coal for 55 percent of its electric power and struggles to keep enough on hand.
Coal remains a critical component of the world’s energy supply despite its bad image. In China, demand for coal in 2010 resulted in a traffic jam 75 miles long caused by more than 10,000 trucks carrying supplies from Inner Mongolia. India is increasing coal imports.
So is Europe, as it takes advantage of lower coal prices in the United States. Higher-priced natural gas on the Continent is creating demand for more coal imports from the United States, where coal is taking a drubbing from less expensive natural gas.
Coal may seem an odd contender in a world where promising renewable energy sources like solar, wind andhydroelectric power are attracting attention. Anathema to environmentalists because it creates so much pollution, coal still has the undeniable advantages of being widely available and easy to ship and