For energy enthusiasts, China has become the main event. The country uses more energy and emits more greenhouse gas than any other on earth. Its production of power is booming, too. Every year, China generates nearly 100,000 megawatts more than the previous year -- more than the total generated by California or Texas. The scale of the accompanying infrastructure change is staggering: every week, a new large coal plant opens somewhere in China. This has led to widespread pollution, health problems, and environmental degradation -- to the cost to the Chinese economy of about 11 percent of GDP.
But this is not the same old cautionary tale of dirty development: China has taken these challenges, and the need for energy and 20 million new jobs per year, as an spur to invest in clean technology. Indeed, with the government putting over $50 billion into clean energy R&D every year, China has become a global hub for energy innovation.
The country's progress is driven by a combination of government mandate and direct investment. Examples are many. A 2007 law required four percent gains in energy efficiency each year through 2012, including in the transportation and industrial sectors. Since then, total efficiency in the power sector has increased by nearly ten percent and is likely to continue rising. Such mandates have been matched by requirements for sulfur emissions control and cleaner water, the closure of many low-efficiency coal mines and cement plants, and new investment in solar, wind, and other renewable power.
To all this, China's twelfth
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