COAL POWER Direct

With utilities already alarmed by looming federal regulations that could force construction of expensive cooling towers that would sharply increase water use, a report by the Energy Department’s Argonne National Laboratory warns that nearly 350 U.S. coal-fired power plants are vulnerable to potential water demand or supply conflicts over the next 20 years stemming from increased competition for dwindling water resources—particularly in the Southeast.

While U.S. coal production has been stagnant in 2010, demand for coal in China and India has sharply risen this year and could represent the early stages of a "long-term supercycle" for the global coal industry, according to Peabody Energy, the world’s largest private coal company.

Combustion flue gas analysis has been used to optimize the boiler air/fuel ratio for decades. Measuring the amount of excess oxygen and/or carbon monoxide in combustion flue gases gives an indication of boiler efficiency and, thereby, plant operating economics. New sensors make those measurements simple and accurate.

Energy efficient and environmentally responsible dry bottom ash technologies will soon be required by regulation. Progressive companies will bring their plants into compliance early because it’s a good business strategy. Here are your compliance options.

As the United States grapples with how best to address climate change and conservation—whether by taxing carbon, cap and trade, or setting higher renewable portfolio standards—an effective approach exists at the state level to reduce electricity producers’ carbon emissions: restructuring.

On November 8, 2010, the U.S. Court of Appeals for the Fourth Circuit issued its decision in West Virginia Highlands Conservancy, et al. v. Huffman. It’s an opinion that should be of great interest to government agencies and others who find themselves in a position of seeking to remediate water quality problems left by third parties.

The Environmental Protection Agency is expected to select its approach for future regulations regarding coal ash storage later this year. One option would be to continue classifying the waste as nonhazardous and leave enforcement with the states. Another option—the worst case for the power industry—would be a determination that coal ash is a hazardous waste, which would result in increased federal oversight and lawsuits.

The U.S. electric utility sector is undergoing a transformation unparalleled in its history. Extraordinary challenges, driven by the urgency of climate change and other market forces, are compelling the industry to abandon its century-old business model of building large, fossil fuel plants to sell increasing amounts of electricity.

In recent months, two noteworthy letters have been sent to Congress by eminent scientists examining the merits—or demerits—of biofuels in the climate debate.

If you want the most accurate test results, it’s worth the extra effort to take isokinetic coal samples from coal pipes when collecting fuel and air measurements. Together, the data collected will allow more accurate balancing of coal pipes, measure fuel fineness, and improve the combustion efficiency of your steam generator.