Efficiency improvements in the US

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US: A Duke University study prepared for the US Environmental Protection Agency (EPA) has reported that the cement industry reduced its energy intensity by 13% between 1997 and 2007, averaging improvements of more than 1%/yr. These energy savings equate to a reduction of almost 1.5Mt of energy-related carbon. The study showed the gap between the best-performing cement plants and others narrowed and the performance of the industry as a whole improved.

"The decade studied by Duke was one of unprecedented growth for the cement industry, yet Portland Cement Association (PCA) members demonstrated their commitment to environmental stewardship by building sound strategies for energy management and investing in their facilities with state-of-the-art technologies that significantly improved the industry's energy-efficiency and reduced emissions," said Brian McCarthy, PCA CEO and president. "The US cement industry was among the first major industries to tackle the issue of climate change and this study illustrates that it has remained at the forefront of developing policies and improving the manufacturing process."

The study was commissioned by the EPA to measure the change in the cement industry's energy efficiency curve. The energy management approach promoted by the EPA's 'Energy Star' programme, which benchmarks plant energy performance against peers over time and certifies plants that achieve the best enviornmental performance, was an important factor in enabling the industry to improve its energy performance.

The Energy Performance Indicator (EPI) scores the energy efficiency of a single cement plant and allows the plant to compare its performance to that of the entire industry. The tool is intended to help cement plant operators identify opportunities to improve energy efficiency, reduce greenhouse gas emissions, conserve conventional energy supplies and reduce production costs.

Last modified on 23 November 2011

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