Plant Level Productivity, Efficiency, and Environmental Performance of the Container Glass Industry

This paper presents a methodology and empirical results based on theMalmquist productivity index. We measure productivity while treatingpollution as an undesirable output. Our estimates show that technicalchange has contributed to productivity and environmental performancegrowth in the container glass industry, an energy and pollution intensivesector. Changes in inter-plant efficiency over time have made thisproductivity growth more rapid than otherwise would have occurred withthe underlying technical change. The efficiency estimates show that thereare both opportunities to improve productivity and reduce pollution in thisindustry, as well as productivity losses associated with the emissionscontrol. The shadow prices for NOx, the undesirable output we analyze,is quite high compared to other regulated sectors.

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