King Coal Is Dethroned In The US – And That’s Good News For The Environment

Intelligence is about more than just biology. Shutterstock

 

Danielle Andrew 22 Aug 2016, 18:07

India and China

The global outlook for coal is more mixed. India, for example, has doubled coal consumption since 2005 and now exceeds U.S. consumption. Energy consumption in India and other developing countries has consistently exceeded forecasts, so don’t be surprised if coal consumption continues to surge upward in low-income countries.

In middle-income countries, however, there are signs that coal consumption may be slowing down. Low natural gas prices and environmental concerns are challenging coal not only in the U.S. but around the world, and forecasts from EIA and BP have global coal consumption slowing considerably over the next several years.

Particularly important is China, where coal consumption almost tripled between 2000 and 2012, but more recently has slowed considerably. Some are arguing that China’s coal consumption may have already peaked, as the Chinese economy shifts away from heavy industry and toward cleaner energy sources. If correct, this is an astonishing development, as China represents 50 percent of global coal consumption and because previous projections had put China’s peak at 2030 or beyond.

A smoggy morning in Delhi, India. Coal use in China and India contributes to local air quality problems and global climate change. Anindito Mukherjee/Reuters

The recent experience in India and China point to what environmental economists call the “Environmental Kuznet’s Curve." This is the idea that as a country grows richer, pollution follows an inverse “U” pattern, first increasing at low-income levels, then eventually decreasing as a country grows richer. India is on the steep upward part of the curve, while China is, perhaps, reaching the peak.

Global health benefits of cutting coal

A global decrease in coal consumption would have enormous environmental benefits. Whereas most U.S. coal plants are equipped with scrubbers and other pollution control equipment, this is not the case in many other parts of the world. Thus, moving off coal could yield much larger reductions in sulfur dioxide, nitrogen oxides, and other pollutants than even the sizeable recent U.S. declines.

Of course, countries like China could also install scrubbers and keep using coal, thereby addressing local air pollution without lowering carbon dioxide emissions. But at some level of relative costs, it becomes cheaper to simply start with a cleaner generation source. Scrubbers and other pollution control equipment are expensive to install and expensive to run, which hurts the economics of coal-fired power plants relative to natural gas and renewables.

Broader declines in coal consumption would go a long way toward meeting the world’s climate goals. We still use globally more than 1.2 tons of coal annually per person. More than 40 percent of total global carbon dioxide emissions come from coal, so global climate change policy has correctly focused squarely on reducing coal consumption.

If the recent U.S. declines are indicative of what is to be expected elsewhere in the world, then this goal appears to be becoming more attainable, which is very good news for the global environment.

 

Lucas Davis, Associate Professor, University of California, Berkeley

This article was originally published on The Conversation. Read the original article.

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