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Productivity growth and biased technological change in hydroelectric dams

Walter Briec, Nicolas Peypoch and Hermann Ratsimbanierana

Energy Economics, 2011, vol. 33, issue 5, 853-858

Abstract: This paper analyses productivity growth and the nature of technical change in a sample of Portuguese hydroelectric generating plants over the period 2001 to 2008. In a first step, we employ the Luenberger productivity indicator to estimate and decompose productivity change. A Malmquist productivity index is also used for a comparative purpose. The results paint a picture of mixed productivity performance in the Portuguese energy sector. The first decomposition underlines that, in average, the productivity variation is explained by the technological change. Then, in a second step, we analyse the nature of this technical change by using the recent concept of parallel neutrality (Briec et al., 2006). We observe a global shift in the best practice frontier as well as in the evidence of input bias in technical change.

Keywords: Hydroelectric; energy; Portugal; Luenberger; productivity; indicator; Parallel; neutrality (search for similar items in EconPapers)
Date: 2011
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