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Although many factors have been identified to explain the nexus between electricity consumption and economic growth, the empirical evidence is rather mixed. Given these contradictory conclusions, the aim of this paper is to find out which outcome the meta-analysis would support by applying meta-analysis to a sample of the empirical results of 43 studies published between 1996 and 2013. We found that the conservation hypothesis is widely associated to American and European countries. However, conservative policies are likely to have an adverse effect on the economic growth in Asian and MENA countries. Conversely to expectations, the growth hypothesis is heavily associated to studied countries and considered modeling specifications. Additionally, while a neutrality hypothesis is insignificantly associated to MENA countries, the feedback hypothesis is not supported when appealing a panel of American economies. Therefore, the inconclusive results may be mainly due to the different country samples, econometric methodologies and to the fact that energy policies cannot be designed without considering economic and environmental factors, which are unfortunately excluded in the majority of studies. Further analysis should focus more on the new approaches rather than usual methods based on a set of common variables for different countries.

This aim of this paper is to use asymmetric causality tests to examine the coal consumption and Gross Domestic Product (GDP) relationship in Turkey based on data from 1980 to 2006. To investigate this relationship, a multivariate system is employed by including fixed capital formation and labor force variables into the model. The empirical results obtained from asymmetric causality tests show no causality for coal consumption and GDP relationship in Turkey. The results indicate that coal consumption does not affect growth; hence, energy conservation policies may be pursued without adversely affecting growth in Turkey. Thus, neutrality hypothesis is confirmed for Turkey. This means that a decrease in coal consumption does not affect economic growth and vice versa. In this case, policymakers should explore the feasibility of either decreasing the coal consumption or increasing the efficiency of coal consumption.