This study reviews the empirical literature on the integration properties of energy consumption and production. The survey begins with a discussion of the implications of whether energy variables contain a unit root and proceeds to examine how results differ according to the specific unit root...

This study examines whether policies to promote renewable electricity generation are likely to be effective by applying panel unit root and stationarity tests to time series data on renewable electricity generation for 115 countries over the period 1980-2008. We find that for the panel as a...