how renewable energy consumption lower global co2 emissions evidence from countries with different income levels significant difference in the emission renewables nexus across countries with different income levels is frequently ignored in previous studies to empirically investigate whether the effect of renewable energy consumption on carbon dioxide co2 emissions differs across countries with different income levels the emission growth renewables nexus for a global panel of 120 countries and four income based subpanels over the period 1995 2015 is examined fully considering the potential cross sectional dependence and slope heterogeneity a series of econometric techniques allowing for cross sectional dependence and slope heterogeneity is utilised cross sectional dependence and slope heterogeneity are confirmed for the global panel as well as for all four subpanels only for the global panel high income subpanel and upper middle income subpanel is the environmental kuznets curve ekc hypothesis valid renewable energy consumption has a negative effect on co2 emissions but its effect is not significant the mitigation effect may be obscured by higher economic growth and increasing non renewable energy consumption the global panel and four subpanels provide mixed directionality of causality among the variables suggesting that for various income based subpanels significant differences exist in the effect of renewable energy consumption on co2 emissions especially highlighting in various direct and indirect influencing paths between renewable energy consumption and co2 emissions

the renewable energy growth and environmental kuznets curve in turkey an ardl approach abstract this study examines the potential of renewable energy sources in reducing the impact of ghg emissions in turkey using autoregressive distributed lag ardl approach the relationship between co 2 emissions electricity generated using renewables and gdp in turkey has been investigated during 1961 2010 moreover the validity of environmental kuznets curve ekc hypothesis has been tested model results show that the coefficient of electricity production from renewable sources hydro power excluded with respect to co 2 emissions is negative and significant in the long run although this effect is positive and statistically significant in the short run since the ecm term is 0 82 it becomes negative around 1 year this means that renewable electricity production will contribute to environmental enhancement with a one year lag our results also suggest a u shaped ekc relationship between per capita ghgs and income estimations from a long run regression show that although the peak point of gdp per capita has been calculated to be 9920 us dollars this turning point was outside of the observed sample period therefore ghg emissions start to decrease with an increase in per capita gdp in the following years model research implies the potential and the importance of renewable energy sources in controlling of emissions in turkey

is there a turning point in the relationship between income and energy use and or carbon emissions abstract we analyze the effect of fuel mix model specification and the level of development on the presence and size of a turning point in the relationship between income and energy use and or carbon emissions the results indicate that fuel mix the specification for income and the level of economic development affect conclusions about whether there is a turning point in the relationship between economic activity and energy use and carbon emissions including fuel shares generally reduces the size of a turning point that is estimated from a panel that includes observations from both oecd and non oecd nations but this result varies according to the level of development for oecd nations there is limited support for a turning point in the relationship between income and per capita energy use and or carbon emissions for non oecd nations there is no turning point in the relationship between income and either energy use or carbon emissions instead the relationship is positive together the results indicate that forecasters and policy makers should not depend on a turning point in the relationship between income and energy use or carbon emissions to reduce either

between estimates of the emissions income elasticity abstract recent papers by wagner and vollebergh et al point out some fundamental econometric problems with traditional methods of estimating the environmental kuznets curve ekc and propose alternative approaches that avoid these issues wagner notes that traditional methods do not take into account the presence of powers of unit root variables and cross sectional dependence in the data while vollebergh et al point out that the time effects are not uniquely identified in the ekc model the between estimator is a simple estimator that also addresses the concerns of these authors it makes no a priori assumption about the nature of the time effects and is likely to provide consistent estimates of long run relationships in real world data situations i apply several common panel data estimators including the between estimator to oecd and global carbon and sulfur emissions datasets the between estimates of the sulfur income elasticity are 0 732 in the oecd and 1 067 in the global data set and the estimated carbon income elasticity is 1 612 in the oecd and 1 509 globally

carbon dioxide emissions and economic growth panel data evidence from developing countries in this paper we test the environment kuznet s curve ekc hypothesis for 43 developing countries we suggest examining the ekc hypothesis based on the short and long run income elasticities that is if the long run income elasticity is smaller than the short run income elasticity then it is evident that a country has reduced carbon dioxide emissions as its income has increased our empirical analysis based on individual countries suggests that jordan iraq kuwait yemen qatar the uae argentina mexico venezuela algeria kenya nigeria congo ghana and south africa approximately 35 per cent of the sample carbon dioxide emissions have fallen over the long run that is as these economies have grown emissions have fallen since the long run income elasticity is smaller than the short run elasticity we also examine the ekc hypothesis for panels of countries constructed on the basis of regional location using the panel cointegration and the panel long run estimation techniques we find that only for the middle eastern and south asian panels the income elasticity in the long run is smaller than the short run implying that carbon dioxide emission has fallen with a rise in income

economic development and co2 emissions a nonparametric panel approach we examine the empirical relation between co2 emissions per capita and gdp per capita during the period 1960 1996 using a panel of 100 countries relying on the nonparametric poolability test of baltagi et al baltagi b h hidalgo j li q 1996 a nonparametric test for poolability using panel data journal of econometrics 75 345 367 we find evidence of structural stability of the relationship we then specify a nonparametric panel data model with country specific effects estimation results show that this relationship is upward sloping nonparametric specification tests do not reject monotonicity but do reject the polynomial functional form which leads to the environmental kuznets curve in several studies

an econometric study of co2 emissions energy consumption income and foreign trade in turkey abstract this study attempts to empirically examine the dynamic causal relationships between carbon emissions energy consumption income and foreign trade in the case of turkey using the time series data for the period 1960 2005 this research tests the interrelationship between the variables using the bounds testing to cointegration procedure the bounds test results indicate that there exist two forms of long run relationships between the variables in the case of first form of long run relationship carbon emissions are determined by energy consumption income and foreign trade in the case of second long run relationship income is determined by carbon emissions energy consumption and foreign trade an augmented form of granger causality analysis is conducted amongst the variables the long run relationship of co2 emissions energy consumption income and foreign trade equation is also checked for the parameter stability the empirical results suggest that income is the most significant variable in explaining the carbon emissions in turkey which is followed by energy consumption and foreign trade moreover there exists a stable carbon emissions function the results also provide important policy recommendations

on the conservation of distance in international trade the volume of world trade has grown more than twice as fast as real world income since 1980 surprisingly the effect of distance on trade has increased during this period it could be that countries are trading greater volumes of goods that are highly sensitive to distance an alternative explanation is that distance has become more import for a significant share of goods using highly disaggregated bilateral trade data we find that adjustment in the composition of trade has not influenced the way in which distance affects trade in contrast for about 25 percent of industries distance has become more important this implies that the increased distance sensitivity of trade is a result of a change in relative trade costs that affects many industries as opposed to a shift to more distance sensitive products we also find that homogeneous products are twice as likely to have become more distance sensitive as compared with differentiated goods this is consistent with the hypothesis that falling search costs resulting from improvements in transport and communications are relatively more important for differentiated goods the results offer no evidence of the death of distance rather they suggest that distance related relative trade costs have remained unchanged or shifted in favor of proximate markets

investment strategies under transaction costs the finite horizon case we examine the effect of proportional transaction costs on dynamic portfolio strategies for an agent who maximizes his expected utility of terminal wealth for portfolios composed of a single risky asset and a single riskless asset constantinides 1979 shows that the optimal investment policy is described in terms of a no transaction region where the optimal policy is to refrain from trading if initial portfolio holdings lie within the region and to transact to the nearest boundary of the region if portfolio holdings lie outside the region because the boundaries could not be derived analytically we developed an efficient and tractable algorithm to obtain the boundaries which are expressed as the ratio of the dollar holdings in stocks and bonds we considered two cases the same transaction costs for the two assets and costs incurred on only the risky asset we derived the optimal trading strategies and utility levels for a large set of realistic parameters in particular we show that the no trans

renewable energy an efficient mechanism to improve gdp abstract this article analyzes the effects of renewable energy on gdp for 116 economies in 2003 through structural equation modeling sem approach in order to decipher the mechanism of how the use of renewables improves macroeconomic efficiency we decompose gdp by the expenditure approach although previous theory predicts positive effects of renewables on capital formation and trade balance the sem results show that renewables have a significant positive influence on capital formation only the result that renewables do not have a significant impact on trade balance implies that renewables do not have an import substitution effect thus we confirm the positive relationship between renewable energy and gdp through the path of increasing capital formation but not for the path of increasing trade balance

stoking the fires co2 emissions and economic growth abstract we examine the relationship between economic development and carbon dioxide emissions a greenhouse gas central to global warming predictions estimates derived from global panel data suggest a diminishing marginal propensity to emit mpe carbon dioxide as gdp per capita rises despite this global carbon dioxide emissions growth will continue at 1 8 percent per annum for the foreseeable future a result that is not sensitive to average output growth instead emissions growth continues because output and population will grow most rapidly in lower income nations with high mpes this latter feature emphasizes the distributional consequences of policies to reduce emissions

economic growth and emissions reconsidering the empirical basis of environmental kuznets curves abstract recent empirical research indicates that certain types of emissions follow an inverted u or environmental kuznets curve ekc as income grows this regularity has been interpreted as a possible de linking of economic growth and patterns of certain pollutants for developed economies in this paper the empirical basis of this result is investigated by considering some statistical particularities of the various ekc studies performed it is argued that the inverted u relationship between income and emissions estimated from panel data need not hold for specific individual countries over time based on insights from intensity of use analysis in resource economics an alternative growth model is specified and estimated for three types of emissions co2 nox and so2 in four countries netherlands uk usa and western germany it is found that the time patterns of these emissions correlate positively with economic growth and that emission reductions may have been achieved as a result of structural and technological changes in the economy sustainable growth is defined as the rate of economic growth that does not lead to growth in emissions its rate is calculated for each type of emission and country based on estimated parameter values the resulting indicators reflect a balance between the positive influence of growth and negative influence of structural change and technological progress on emission levels

determinants of co2 emissions in a small open economy abstract the aim of the paper is to explore the relationship between economic development and carbon dioxide co2 emissions for a small open and industrialized country austria we test whether an environmental kuznets curve relationship also holds for a single country rather than concentrating on panel or cross section data for a set of countries a cubic i e n shaped relationship between gdp and co2 emissions is found to fit the data most appropriately for the period 1960 1999 and a structural break is identified in the mid seventies due to the oil price shock furthermore two variables are additionally significant import shares reflecting the well known pollution haven hypothesis and the share of the tertiary service sector of total production gdp accounting for structural changes in the economy emission projections derived from this single country specification support the widely held opinion that significant policy changes are asked for when implementing the kyoto protocol in order to bring about a downturn in future carbon emissions

the environmental kuznets curve economic growth renewable and non renewable energy and trade in tunisia we use the autoregressive distributed lag ardl b ounds testing approach for cointegration with structural breaks and the ve ctor error correction model vecm granger causality approach in order to investigate relationships between per capita co 2 emissions gdp renewable and non renewable energy consumption and international trade exports or imports for tunisia during the period 1980 2009 we show the existence of a short run unidirectional causality running from tra de gdp co 2 emission and non renewable energy to renewable energy our long run estimates show that non renewable energy and trade have a positive impact on co 2 emissions whereas renewable energy impacts weakly and negatively co 2 emission when using the model with exports and this impact is statistically insignificant when using the model wi th imports the inverted u shaped environmental kuznets curve ekc hypothesis is not supported graphically and analytically in the long run this means that tunisia has not ye t reached the required level of per capita gdp to get an inverted u shaped ekc our main policy recommendations for tunisia are the following i to radically reform the subsidies system granted b y the tunisian government for fossil fuels consumption ii to encourage the use of renewable energy and ener gy efficiency by reinforcing actual projects and regulatory frame work iii to locate ports near exporting industrial zones or vice versa to reduce emission of pollution caused by the transport of merchandise iv to elaborate a strategy for maximizing its benefit from renewable energy technology transfer occurring when importing capita l goods v to encourage the creation of renewable energy projects for export to the eu with a proportion of production for national consumption

is economic growth good or bad for the environment empirical evidence from korea abstract the effects of economic growth on the environment in korea for a given level of energy consumption and fossil fuels and nuclear energy in electricity production are examined in a dynamic cointegration framework to that end the autoregressive distributed lag ardl approach is used we find empirical evidence supporting the existence of the environmental kuznets curve ekc hypothesis for korea that is economic growth indeed plays a favorable role in influencing environmental outcomes it is also found that in both the short and long run nuclear energy has a beneficial effect on environmental quality whereas fossil fuels in electricity production and energy consumption have a detrimental effect on the environment

renewable and non renewable energy consumption growth nexus evidence from a panel error correction model abstract unlike previous renewable energy consumption growth studies this study examines the relationship between renewable and non renewable energy consumption and economic growth for 80 countries within a multivariate panel framework over the period 1990 2007 the pedroni 1999 2004 heterogeneous panel cointegration test show a long run equilibrium relationship between real gdp renewable energy consumption non renewable energy consumption real gross fixed capital formation and the labor force with the respective coefficient estimates positive and statistically significant there is little difference in the elasticity estimates with respect to renewable and non renewable energy consumption the results from the panel error correction model reveal bidirectional causality between renewable and non renewable energy consumption and economic growth in both the short and long run also there is bidirectional short run causality between renewable and non renewable energy consumption indicative of substitutability between the two energy sources

the environmental kuznets curve ekc theory part a concept causes and the co2 emissions case abstract the main purpose of this study is to capture the main features of the environmental kuznets curve ekc concept according to the ekc theory the process of economic growth is expected eventually to limit the environmental degradation created in the early stages of development the ekc concept leads many researchers from the early 1990s to assume that each economy should focus on its growth and any environmental problems will be eventually eliminated by the process of economic growth several studies attempt to test empirically the ekc hypothesis using data on many countries and examining various types of environmental degradation while other studies examine the underlying factors that may drive such a relationship this article reviews the evolution of the ekc concept and the possible causes of an ekc pattern like the distribution of income the international trade pollution haven hypothesis structural changes technical progress and improvements in energy efficiency institutions and governance and consumer preferences as co2 emissions are a pollutant with global effects several studies deal with the possible ekc pattern for co2 emissions and these studies are discussed separately the various critiques on the ekc concept are reviewed in the second article of this work

trade the pollution haven hypothesis and the environmental kuznets curve examining the linkages abstract this paper examines the extent to which the ekc inverted u relationship can be explained by trade and specifically the migration or displacement of dirty industries from the developed regions to the developing regions the pollution haven hypothesis phh using detailed data on north south trade flows for pollution intensive products the evidence for the phh is assessed emissions of 10 air and water pollutants are then estimated controlling for trade openness structural change and dirty north south trade flows evidence of pollution haven effects is found although such effects do not appear to be widespread and appear to be relatively small compared to the roles played other explanatory variables

carbon intensity and economic development 1962 1991 a brief exploration of the environmental kuznets curve the relationship between national carbon dioxide emissions intensity co2 emitted per unit of gross domestic product and level of economic development has changed from essentially linear in 1962 to strongly curvilinear in 1991 the inverted u curve reached statistical significance briefly in the early 1970s and increasingly since 1982 this is the result not of groups of countries passing through stages of development but of efficiency improvements in a small number of wealthy countries combined with worse performance in poor and middle income countries the curvilinear relation is deepening and is likely to persist due to constraints on poorer countries in the world economy

carbon dioxide emission and income a temporal analysis of cross country distributional patterns the existence of a cointegrating relationship between income and co2 emission for individual country groups suggests existence of a corresponding relationship between the inter country disparities in the levels of income and co2 emission this paper explores the relationship between the patterns of cross country distribution of income and co2 emission and temporal shifts in such a relationship this paper also examines how the mean level of per capita co2 emission and its distributional inequality are related to the corresponding mean income level and the distributional inequality of income the analysis is based on a cross country panel data set at the level of country group environmental quality demanded is treated as a private good and not as a public good as done in most other studies the technique of lorenz and specific concentration curve analysis are used as the basic analytical framework to argue that a measure of relative distributional inequality of income should be used as an explanatory variable in the environmental kuznets curve ekc relationship along with the mean income level in the empirical exercise johansen s cointegration analysis technique is used to explore existence of statistically significant cointegrating vector s relating mean level of emission and specific concentration ratio scr of emission to mean income level and lorenz ratio lr of income the empirical results confirm that the pattern of cross country income distribution has significant effect on the mean level of emission for all the country groups considered

does urbanization lead to less energy use and lower co2 emissions a cross country analysis despite the relationship between urbanization energy use and co2 emissions has been extensively studied in recent years little attention has been paid to differences in development stages or income levels most previous studies have implicitly assumed that the impact of urbanization is homogenous for all countries this assumption can be questionable as there are many characteristic differences among countries of different levels of affluence this paper investigates empirically the effects of urbanization on energy use and co2 emissions with consideration of the different development stages using the stochastic impacts by regression on population affluence and technology stirpat model and a balanced panel dataset of 99 countries over the period 1975 2005 the findings suggest that the impact of urbanization on energy use and emissions varies across the stages of development surprisingly urbanization decreases energy use in the low income group while it increases energy use in the middle and high income groups the impact of urbanization on emissions is positive for all the income groups but it is more pronounced in the middle income group than in the other income groups these novel findings not only help advance the existing literature but also can be of special interest to policy makers and urban planners

the environmental kuznets curve ekc theory part b critical issues according to the environmental kuznets curve ekc theory the process of economic growth is expected to limit the environmental degradation created in the early stages of development the first article of this study reviews the empirical studies examining various factors other than income that may lead to an ekc pattern the current article reviews in the first part the major critiques on the ekc speculation which relate to the following issues the normal distribution of world income the feedback from environmental degradation to economic growth the characteristics of the pollutant in question various econometric issues the evolution of consumption when income rises and the assumption about a common developmental pattern in all countries the second part discusses additional matters reported indirectly in the literature and or must be further examined there are doubts whether the gdp series captures the transition of production to the three productive sectors in empirical estimations and whether services are less polluting compared to industry activities finally the original kuznets theory which laid the groundwork for the ekc concept does not seem to solve income inequality problems

environment kuznets curve for co2 emissions a cointegration analysis for china abstract this study examines the long run relationship between carbon emissions and energy consumption income and foreign trade in the case of china by employing time series data of 1975 2005 in particular the study aims at testing whether environmental kuznets curve ekc relationship between co 2 emissions and per capita real gdp holds in the long run or not auto regressive distributed lag ardl methodology is employed for empirical analysis a quadratic relationship between income and co 2 emission has been found for the sample period supporting ekc relationship the results of granger causality tests indicate one way causality runs through economic growth to co 2 emissions the results of this study also indicate that the carbon emissions are mainly determined by income and energy consumption in the long run trade has a positive but statistically insignificant impact on co 2 emissions

renewable energy consumption and economic growth evidence from a panel of oecd countries abstract this study examines the relationship between renewable energy consumption and economic growth for a panel of twenty oecd countries over the period 1985 2005 within a multivariate framework given the relatively short span of the time series data a panel cointegration and error correction model is employed to infer the causal relationship the heterogeneous panel cointegration test reveals a long run equilibrium relationship between real gdp renewable energy consumption real gross fixed capital formation and the labor force with the respective coefficients positive and statistically significant the granger causality results indicate bidirectional causality between renewable energy consumption and economic growth in both the short and long run

trade and environment an empirical analysis of the technology effect in the steel industry abstract the objective of this paper is to study the impact of free trade on global environmental quality by focusing on the technology effect that is the relationship between trade openness and the adoption diffusion of clean technologies the paper attempts to empirically verify the existence of the technology effect by looking at the relationship between trade policy regime or openness and the speed of clean technology diffusion in the steel industry focusing on a cleaner steel technology the electric arc furnace eaf in 30 steel producing countries over 25 years the results show that eaf technology is diffused faster in countries that have more open trade policy regimes thereby supporting the existence of the technology effect for the industry considered

greenhouse gases emissions growth and the energy mix in europe the importance of energy on greenhouse gases ghg emissions is reflected by the fact that 65 of said emissions in the world are currently due to the use and production of energy however most empirical emission models are found within the environmental kuznetz curve ekc framework which focuses on the relationship between emissions and economic development ang s 2007 2008 papers are some of the exceptions that simultaneously study the relationship between emissions growth and energy with respect to ang s research we contribute on two important aspects first while ang uses a particular country as the study and use time series techniques we take advantage of a panel data set of 24 european countries between 1990 and 2006 and use a dynamic panel data dpd framework second the impact of energy consumption on emissions would depend on the primary energy mix and on the final use of this energy and we consider both factors in the model

national borders and international trade evidence from the european union in this paper the impact of national borders on international trade within the european union is considered using a gravity model i find that averaged over all eu countries intranational trade is about ten times as high as international trade with an eu partner country of similar size and distance this relatively strong home bias suggests that even within the european union national borders still have a decisive impact on trade patterns jel classification f02 f14 f15 o52 ce memoire examine l impact des frontieres nationales sur le commerce international a l interieur de l union europeenne on montre que en moyenne pour tous les pays de l union europeenne le commerce intranational est a peu pres dix fois plus important que le commerce international avec un pays partenaire de l union europeenne de meme taille et a meme distance ce degre relativement important de preference nationale suggere que meme dans le cadre de l union europeenne les frontieres nationales ont encore un impact determinant sur les patterns de commerce

richer and cleaner a study on carbon dioxide emissions in developing countries abstract the climate change debate has drawn attention to the problem of greenhouse gases emissions into the atmosphere one of the most important issues in the policy debate is the role that should be played by developing countries in joining the commitment of developed countries to reduce ghg emissions and particularly co2 emissions this debate calls into play the relationship between energy consumption co2 emissions and economic development in this paper we use a panel data model for 110 world countries to estimate the relationship between co2 emissions and gdp and to produce emission forecast the paper contains three major results i the empirical relationship between carbon dioxide and income is well described by non linear gamma and weibull specifications as opposed to more usual linear and log linear functional forms ii our single equation reduced form model is comparable in terms of forecasted emissions with other more complex less data driven models iii despite the decreasing marginal propensity to pollute our forecasts show that future global emissions will rise the average world growth of co2 emissions between 2000 and 2020 is about 2 2 yr while that of non annex 1 countries is posted at 3 3 yr

do countries influence neighbouring pollution a spatial analysis of the ekc for co2 emissions abstract by considering spatial relationships this study aims to analyse to what extent per capita co2 emissions are determined by renewable energy consumption the share of the services sector in gdp energy intensity and real per capita income a panel data set composed of 173 countries over the 1990 2014 period is used to estimate an environmental kuznets curve ekc augmented by neighbouring per capita income and energy intensity both standard and spatial forms are estimated for seven different sets of countries to assess the robustness of the results finally several forecasts are performed to verify global sustainability and to provide some policy suggestions for the period 2015 2100 the empirical results indicate that i most areas support the standard ekc ii there seems to be an inverted u shaped relationship between neighbouring per capita income and national per capita emissions in europe asia and the world as a whole iii neighbouring energy intensity increases national per capita emissions and iv forecasts show that economic growth will accelerate climate change however a steady annual growth in renewable energy consumption and a steady decrease in energy intensity both close to 2 5 may guarantee environmental sustainability prior to 2100

a further inquiry into the pollution haven hypothesis and the environmental kuznets curve abstract empirical research on the relationship between economic growth and its impact on the environment often tests the environmental kuznets curve ekc a hypothesis that rising national output leads to increases in pollution emissions until an economy reaches a certain size and decreases thereafter this paper addresses a branch of ekc literature focused on the role international trade plays in shaping this relationship in particular we test the pollution haven hypothesis which posits that emission reductions observed in developed nations are partly the result of shifting dirty production to developing nations with lax environmental standards we estimate ekcs for seven oft studied pollutants and find little evidence that pollution havens play a significant role in shaping the ekc we also find that confidence intervals around ekc turning points are very wide often including values well above the range of the data this leads us to be skeptical of the optimistic view that economic growth naturally leads to improvements in environmental quality

an ekc pattern in historical perspective carbon dioxide emissions technology fuel prices and growth in sweden 1870 1997 the environmental kuznets curve ekc has been subject to research and debate since the early 1990s this articleexamines the inverted u trajectory of swedish co2 emissions during an extended time

renewable energy carbon emission and economic growth a revised environmental kuznets curve perspective abstract renewable energy plays an important role in reducing global carbon co2 emission this paper builds a rer renewable energy consumption rate index to represent the energy structure of a country and proposes a u shaped rkc renewable energy kuznets curve hypothesis between rer and economic growth we also examine the dynamic relationship between rer and the environmental kuznets curve ekc hypothesis using two panel data sets of 17 major developing and developed countries as well as six geo economic regions of the world during 1990 2014 panel co integration tests indicate that a long run relationship exists among economic growth rer and carbon emission we employ the fully modified ordinary least squares fmols and the dynamic ordinary least squares dols techniques to estimate the co integration coefficients of the panels and individual countries regions respectively the results verify both the ekc and rkc hypotheses indicating that a 10 rise in rer would to a 1 6 carbon emission reduction it is also found that the rkc turning points of individual countries and the entire samples in general take place before the turning points of the respective ekcs it suggests that promoting renewable energy consumption to make rkc cross its turning point earlier can accelerate ekc to reach its turning point more quickly this finding has important policy implications with respect to the development and utilization of renewable energy and environmental protection

unemployment insurance and market structure abstract this paper examines the impact of unemployment insurance ui on employment and unemployment in an industry in which the prices can vary due to some market power some non conventional results are obtained it is shown that if there is free entry and exit average industrial employment may be a decreasing function of the experience rating because the number of firms in the industry is itself a decreasing function of this parameter this contradicts the conventional view which was arrived at using models of a perfectly competitive industry with no entry and according to which employment should be an increasing function of the experience rating the general conclusion is that for industries with different degrees of market power the same ui scheme has different impacts on employment and unemployment