Japan Sees a Chance to Promote Its Energy-Frugal Ways — which it pursued even when energy prices were low:
With its towering furnaces and clanging conveyer belts carrying crushed rock, Taiheiyo Cement’s factory looks like an Industrial Revolution relic. But it is actually a model of modern energy efficiency, harnessing its waste heat to generate much of its own electricity.
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Kawasaki Heavy Industries, which makes the waste heat generator at the cement factory in Kumagaya, started developing the technology in 1979. But the generators were too expensive to sell outside Japan while energy prices were low. But overseas orders took off three years ago, after energy prices began rising.Since then, the company has sold 64 units, mainly through a joint venture in China.
“Japan rushed to embrace these technologies back in the 1980s,” said Katsushi Sorida, head of the waste heat plant department at Kawasaki Plant Systems, a subsidiary that markets and installs the units. “Now the rest of the world is finally catching up.”
I suppose the rest of the world is “catching up” because it finally makes sense to spend massive resources to reduce energy waste.
Japan’s forced-conservation regulations led it to use less energy when energy was cheap:
According to the International Energy Agency, based in Paris, Japan consumed half as much energy per dollar worth of economic activity as the European Union or the United States, and one-eighth as much as China and India in 2005. While the country is known for green products like hybrid cars, most of its efficiency gains have been in less eye-catching areas, for example, in manufacturing.Corporate Japan has managed to keep its overall annual energy consumption unchanged at the equivalent of a little more than a billion barrels of oil since the early 1970s, according to Economy Ministry data. It was able to maintain that level even as the economy doubled in size during the country’s boom years of the 1970s and ’80s.
Japan’s strides in efficiency are clearest in heavy industries like steel, which are the nation’s biggest consumers of power. From 1972 to 2006, the Japanese steel industry invested about $45 billion in developing energy-saving technologies, according to the Japan Iron and Steel Federation.
The results are visible at the Keihin mill on Tokyo Bay, run by Japan’s No. 2 steelmaker, JFE Steel. Massive steel ducts snake from the blast furnaces and surrounding buildings. These capture heat and gases that had previously been released into the air or burned off as waste. Now, they are used to power generators that produce 90 percent of the plant’s electricity. (The plant’s main fuel remains the coal used to heat its huge blast furnaces.)
Such innovations allow the mill to produce a ton of steel using 35 percent less energy than it did three decades ago, said Yoshitsugu Iino, group leader of JFE Steel’s climate change policy group. Mr. Iino calculates that if the global steel industry adopted Japanese conservation measures, it could reduce carbon emissions by some 300 million tons a year.