energy consumption gdp nexus heterogeneous panel causality analysis abstract existing studies examining the granger causality relationship between energy consumption and gdp use a panel of countries but implicitly assume that the panels are homogeneous this paper extends the granger causality relationship between energy consumption and gdp by taking into account panel heterogeneity for this purpose we use a large panel of 79 countries for the period 1980 2007 specifically we examine four different causal relationships homogeneous non causality homogeneous causality heterogeneous non causality and heterogeneous causality the results show that roughly seven tenths of the countries exhibit bi directional granger causality two tenths exhibit no granger causality and one tenths exhibit uni directional granger causality

effects of renewable energy sector development on electricity consumption growth nexus in the european union abstract the aim of this study is to assess the effect of renewable energy sector development on the relationships between electricity consumption and economic growth in the european union countries in the period between 1995 and 2015 a panel vector autoregressive model is used for testing granger causality and estimating impulse response functions the results indicate that the relationships between economic growth and electricity consumption depend on the level of renewable energy sector development the greater the share of the renewable energy sector in the economy is the more noticeable the mutual dependence between the economic growth and renewable electricity consumption is in countries with relatively well developed renewable energy sectors renewable electricity consumption boosts the economy and vice versa in the remaining countries economic growth and electricity consumption are independent empirical findings suggest that policymakers should develop strategies to implement clean energy policy aimed at stimulating the development of the renewable energy sector to support economic growth

co2 emissions non renewable and renewable electricity production economic growth and international trade in italy abstract this paper applies the autoregressive distributed lag ardl bounds testing approach to cointegration to investigate the dynamic causal relationships between co2 emissions per capita real gdp per capita per capita non renewable electricity production and per capita renewable electricity production and international trade in the case of italy from 1960 to 2011 we find cointegration among these variables in the presence of possible structural breaks and we overcome the problem of multicollinearity in the research design the environmental kuznets curve ekc hypothesis is validated analytically because the estimated pollution model indicates that economic growth leads to less pollution over time per capita renewable electricity production reduces the level of co2 emissions per capita in the short run and in the long run whereas international trade only impacts positively upon carbon dioxide emissions per capita in the long run international trade granger causes co2 emissions per capita and non renewable electricity production per capita moreover the results depict the existence of the long run unidirectional granger causality relation running from output per capita to renewable electricity production per capita and from non renewable electricity production per capita to renewable electricity production per capita the findings indicate that renewable electricity production is a key solution in reducing pollutant emissions over time this result should be of concern to policy makers

the causality relationship between energy consumption and gdp in g 11 countries revisited abstract this paper explores whether energy conservation policies can be implemented in countries with the same level of development that is is restraining energy consumption without compromising economic growth feasible in all industrialized countries a new granger non causality testing procedure developed by toda and yamamoto 1995 journal of econometrics 66 225 250 is applied to re investigate the relationship if any between energy consumption and income in 11 major industrialized countries the results clearly do not support the view that energy consumption and income are neutral with respect to each other except in the case of the united kingdom germany and sweden where a neutral relationship is found bi directional causality in the united states and uni directional running from energy consumption to gdp in canada belgium the netherlands and switzerland are found this indicates that energy conservation may hinder economic growth in the latter five countries further the causality relationship appears to be uni directional but reversed for france italy and japan which implies that in these three countries energy conservation may be viable without being detrimental to economic growth

the relationship between economic growth and electricity consumption from renewable and non renewable sources a study of turkey abstract the main objective of this study is to analyze the short and long run estimates as well as the causality relationships between economic growth gr electricity consumption from renewable sources relc and electricity consumption from non renewable sources nrelc for turkey in a multivariate model wherein capital k and labor l are included as additional variables using the autoregressive distributed lag ardl approach to cointegration the johansen cointegration test and the gregory hansen cointegration test with structural break we show that gr relc nrelc k and l are cointegrated although nrelc has a long run positive effect on gr the long run estimate of relc is negative but insignificant at 5 level of significance the granger causality test based on the vector error correction model reveals the evidence of neutrality hypothesis between relc and gr and between nrelc and gr in turkey in the short run in addition the granger causality runs from relc nrelc k and l to gr as well as from gr relc k and l to nrelc in the long run which supports the existence of growth hypothesis between relc and gr and feedback hypothesis between nrelc and gr in the long run it is advised that policy makers in the turkish government should continue to reduce the share of electricity consumption from renewable sources and encourage the usage of electricity from non renewable sources to have sustainable long run growth rates it is also essential to promote the investment projects to increase the efficiency of electricity generation from non renewable sources

nuclear energy consumption and economic growth in nine developed countries this article attempts to test the causal relationship between nuclear energy consumption and real gdp for nine developed countries for the period 1971 2005 by including capital and labour as additional variables using a modified version of the granger causality test developed by toda and yamamoto 1995 we found a unidirectional causality running from nuclear energy consumption to economic growth in japan netherlands and switzerland the opposite uni directional causality running from economic growth to nuclear energy consumption in canada and sweden and a bi directional causality running between economic growth and nuclear energy consumption in france spain the united kingdom and the united states in spain the united kingdom and the usa increases in nuclear energy consumption caused increases in economic growth implying that conservation measures taken that reduce nuclear energy consumption may negatively affect economic growth in france japan netherlands and switzerland increases in nuclear energy consumption caused decreases in economic growth suggesting that energy conservation measure taken that reduce nuclear energy consumption may help to mitigate the adverse effects of nuclear energy consumption on economic growth in canada and sweden energy conservation measures affecting nuclear energy consumption may not harm economic growth

renewable energy consumption economic growth nexus in turkey abstract this paper examines the renewable energy consumption economic growth causality nexus in turkey studies in the literature can be grouped as country specific and multi country studies the results of these studies are inconsistent and there is no agreement on the existence or the direction of causality between renewable energy consumption and economic growth the results of this country specific study support conservation hypothesis the results of empirical tests from ardl approach show that renewable energy consumption has a negative impact on economic growth and the ones of toda yamamoto causality tests show that there is a unidirectional causality running from economic growth to renewable energy consumption

modeling the causal linkages between nuclear energy renewable energy and economic growth in developed and developing countries abstract this article investigates the causal relationship between two types of energy variables and economic growth using dynamic simultaneous equation panel data models for 17 developed and developing countries our results indicate that there is a unidirectional causality running from nuclear consumption to economic growth in belgium and spain while a unidirectional causality running from economic growth to nuclear consumption is supported in bulgaria canada netherlands and sweden a bidirectional relationship appears in argentina brazil france pakistan and the usa while no causality exists in finland hungary india japan switzerland and the u k second the results for the second nexus among renewable energy and economic growth show that there is a unidirectional causality running from renewable consumption to economic growth in hungary india japan netherlands and sweden while there exist a unidirectional running from economic growth to renewable consumption in argentina spain and switzerland a bidirectional relationship is supported in belgium bulgaria canada france pakistan and the usa while no causality exists in brazil finland and switzerland third we find the existence of a bidirectional causality between nuclear consumption and economic and a unidirectional causality running from economic growth to renewable energy consumption for the global panel

the alberta dilemma optimal sharing of a water resource by an agricultural and an oil sector we fully characterize the optimal time paths of production and water usage by an agricultural and an oil sector that share a limited water resource we show that for any given water stock if the oil stock is sufficiently large it will become optimal to have a phase during which the agricultural sector is inactive followed by a phase during which both sectors are active again the agricultural sector will always be active in the end as the oil stock is depleted if agriculture is not constrained by the given natural inflow of water then oil extraction will always end with a phase during which oil production follows a pure hotelling path otherwise oil production never follows a pure hotelling path because its full marginal cost must always reflect not only the imputed rent on the finite oil stock but also the positive opportunity cost of water usage the case of oil and agriculture sharing a water resource is but one example our analysis provides a framework to generalize the hotelling rule to other cases where the full marginal opportunity cost of extracting a nonrenewable resource depends on the endogenous activity of some other sector of the economy

competing land uses and fossil fuel and optimal energy conversion rates during the transition toward a green economy under a pollution stock constraint abstract we study the transition to a carbon free economy in a model with a polluting non renewable resource and a clean renewable resource transforming primary energy into ready to use energy services is costly and more efficient energy transformation rates are more costly to achieve renewable energy competes with food production for land and the food productivity of land can be improved at some cost to avoid catastrophic climate damages the pollution stock is mandated to stay below a given cap when the economy is not constrained by the cap the efficiency of energy transformation increases steadily until the transition toward the ultimate green economy when renewable energy is exploited its land use rises at the expense of food production food productivity increases together with the land rent but food production drops the food and energy prices increase and renewables substitute for non renewable energy during the constrained phase the economy follows a constant path of prices quantities efficiency rates food productivity and land rent a phenomenon we call the ceiling efficiency paradox

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

bioenergy and global land use change this is the first article that econometrically estimates the global land use change impact of bioenergy applying time series analytical mechanisms to fuel biofuel and agricultural commodity prices and production we estimate the long run relationship between energy prices bioenergy production and the global land use change our results suggest that rising energy prices and bioenergy production significantly contribute to the global land use change both through the direct and indirect land use change impact globally the total agricultural area yearly increases by 35 578 1 thousand ha due to increasing oil price and by 12 125 1 thousand ha due to increasing biofuel production which corresponds to 0 73 and 0 25 of the total worldwide agricultural area respectively soya land use change and wheat land use change have the highest elasticities with respect to both oil price and biofuel production in contrast nonbiomass crops grassland and rice have negative land use change elasticities region spe

fashion styling and the within season decline in automobile prices between 1954 and 1989 the seasonal variation in retail new car prices declined while the annual percentage decline in used car prices lessened to explain these long term changes this article suggests that a rise in the cost of a major model change has reduced the frequency of major model changes changed the characteristics of new models and resulted in smaller within season price declines new cars of adjacent model years have become closer substitutes as the importance of the annual model change has lessened the american automobile has slowly become less of a fashion product because it has become increasingly costly to supply frequent styling changes in contrast the within season price decline in women s apparel has increased over time as fashion has become more important reasons for the different price patterns are investigated

analysis of renewable energies in european union abstract the paper s main research objective is to analyse the renewable energy sector in the european union member states the first step of the research was to generate clusters of countries based on the share of renewables in total energy produced and the countries energy dependence in order to generate the clusters we applied the k means clustering method based on the data obtained from eurostat by using the statistical package for the social sciences three clusters of countries have been generated in the next step the eu states were ranked based on the following criteria share of renewable energy sources share of renewable electricity share of renewable heating and cooling and share of renewable energy in transport then the main characteristics of the renewable energy policy in each member state have been highlighted

optimal pricing of environmental and natural resource use with stock externalities abstract underlying some of the most pressing environmental problems are the interlinked resource and environmental stock externalities with threshold effects using a simple dynamic model it is shown how in the face of such externalities the static market based policy instruments such as pigouvian taxes should be modified it is shown that even if for an initial period there is going to be no pollution stock damage the optimal policy still requires that abatement begins immediately and at increasing rates simulation of the model for the case of fossil fuel burning and the consequent global warming shows that the optimal carbon tax and therefore the optimal control strategy is particularly sensitive to changes in the marginal abatement cost and the level of fossil fuel demand policy simulations contrast the optimal control policy with and estimate the welfare losses from alternative policies deriving from arbitrary tax paths the latter include i a no tax policy ii a constant carbon tax rate iii the european community s proposed carbon tax path and iv a delayed optimal tax path

interactions between electricity generation sources and economic activity in two nord pool systems evidence from estonia and sweden abstractthe interactions between electricity sources and industrial production in estonia and sweden are analysed based on monthly data the availability of data defines the time spans from january 2010 to september 2015 for sweden and from april 2010 to december 2014 for estonia these countries are particularly interesting to study because of their dissimilar generation mix estonia s generation mix is based on oil shale while sweden s is based on nuclear plants and hydroelectricity in short both countries energy mixes are based on endogenous natural resources the ardl model was applied allowing the long run and short run effects to be captured the results prove that economic growth is sustained by natural endogenous resources estonia should continue to improve the usage of renewable energies using fossil sources in support in order to reduce emissions and to meet international environmental commitments sweden should promote the efficient usage of various renewable sources

a reconsideration of hedonic price indexes with an application to pc s this paper compares hedonic to matched model indexes matched model indexes are averages of the price changes of goods that remain on sampled stores shelves since goods that disappear tend to have falling market values matched model indexes select from the right tail of price changes the bls can construct hedonic indexes that correct for this selection and are justified by standard arguments in an empirical study of pc s hedonics produce sharp price declines while matched model indexes are near zero also though there are modifications to hedonics that seem desirable they are not those in current use

the product life cycle and sample representativity bias in price indexes abstractofficial price indexes are usually calculated using matched samples of products if products exhibit systematic price trends at different points in their life cycle then matched sample methods may introduce bias if the life cycle movement in the sample does not adequately reflect that in the population this article explores the extent of these life cycle pricing effects and then examines the bias it can introduce in measured inflation a large us supermarket scanner data set for six cities and six products over 12 years is used using hedonic methods we find that the life cycle component of price change is important across a range of products and cities to explore the bias introduced by these movements we use simulations that construct indexes with different sample update frequency for indexes that are never completely resampled we find an annual absolute bias of 0 88 and 0 59 percentage points depending upon whether we use the actual prices or prices imputed from our hedonic model this comp

use renewables to be cleaner meta analysis of the renewable energy consumption economic growth nexus abstract the renewable energy consumption economic growth nexus is a growing area of research over the last few years emanating to mixed results the aim of the current study is to quantitatively synthesise the empirical literature on the subject using the meta analysis approach in particular a meta multinomial regression is employed to investigate the sources of variation in the direction of causality between renewable energy consumption and economic growth this causal relationship takes the form of four hypotheses namely the feedback conservation growth and neutrality hypotheses to the best of author s knowledge this study constitutes the first meta analysis undertaken on the renewable energy consumption economic growth nexus the empirical results reveal that the variation in the supported hypotheses is due to a number of characteristics including model specification data characteristics estimation techniques cointegration methods and causality tests and development level of the country on which a study was conducted

balancing power and variable renewables three links abstract balancing power is used to quickly restore the supply demand balance in power systems the need for this tends to be increased by the use of variable renewable energy sources vre such as wind and solar power this paper reviews three channels through which vre and balancing systems interact the impact of vre forecast errors on balancing reserve requirements the supply of balancing services by vre generators and the incentives to improve forecasting provided by imbalance charges the paper reviews the literature provides stylized facts from german market data and suggests policy options surprisingly while german wind and solar capacity has tripled since 2008 balancing reserves have been reduced by 15 and costs by 50

why large scale bioenergy production on marginal land is unfeasible a conceptual partial equilibrium analysis a transparent and conceptual partial equilibrium model of global land use is used to explore long term effects of large scale introduction of bioenergy under different policy cases the transparency of the model and the consideration of clear cut policies provides a clear picture of how main mechanisms of land use competition work and how they influence the food and bioenergy systems the model is subjected to a detailed characterization in which parameters critical to the results and conclusions are detected and their impacts depicted a large scale introduction of bioenergy would raise food prices in all cases scenarios investigated and relative price increases of extensively produced crops would be at least twice as high as compared to intensively produced crops banning production of bioenergy from the most productive land limiting production to marginal land would reduce this price impact however we show that bioenergy is unlikely to ever be produced on any commercial scale only on land of low productivity the economic incentives would be strong for owners of more productive land to grow bioenergy anyway and out compete the more costly production on low yielding land large scale deforestation would become attractive in response to increased bioenergy demand especially for extensive production systems such as grazing

optimal taxes on fossil fuel in general equilibrium we analyze a dynamic stochastic general equilibrium dsge model with an externality through climate change from using fossil energy our central result is a simple formula for the marginal externality damage of emissions or equivalently for the optimal carbon tax this formula which holds under quite plausible assumptions reveals that the damage is proportional to current gdp with the proportion depending only on three factors i discounting ii the expected damage elasticity how many percent of the output flow is lost from an extra unit of carbon in the atmosphere and iii the structure of carbon depreciation in the atmosphere thus the stochastic values of future output consumption and the atmospheric co2 concentration as well as the paths of technology whether endogenous or exogenous and population and so on all disappear from the formula we find that the optimal tax should be a bit higher than the median or most well known estimates in the literature we also formulate a parsimonious yet comprehensive and easily solved model allowing us to compute the optimal and market paths for the use of different sources of energy and the corresponding climate change we find coal rather than oil to be the main threat to economic welfare largely due to its abundance we also find that the costs of inaction are particularly sensitive to the assumptions regarding the substitutability of different energy sources and technological progress

scanner data and the treatment of quality change in nonrevisable price indexes the recently developed rolling year geks procedure makes maximum use of all matches in the data to construct nonrevisable price indexes that are approximately free from chain drift a potential weakness is that unmatched items are ignored in this article we use imputation tornqvist price indexes as inputs into the rolling year geks procedure these indexes account for quality changes by imputing the missing prices associated with new and disappearing items three imputation methods are discussed the first method makes explicit imputations using a hedonic regression model which is estimated for each time period the other two methods make implicit imputations they are based on time dummy hedonic and time product dummy regression models and are estimated on bilateral pooled data we present empirical evidence for new zealand from scanner data on eight consumer electronics products and find that accounting for quality change can make a substantial difference

dynamics between energy output openness and financial development in sub saharan african countries abstractthis study aims to establish the connection between energy use economic output financial development and trade based on the panel data of 15 sub saharan african ssa countries during the period from 1983 to 2010 one full main panel and two subpanels were created by incorporating low income and middle income countries the panel cointegration test results indicate a long run relationship between the variables the mean group mg estimators show that energy consumption financial development capital and international trade have significant impacts on economic output in the case of middle income countries the granger causality analysis reveals that rising economic output leads to higher energy consumption but this is not true vice versa this means that energy conservation measures are unlikely to have adverse impacts upon economic output on the other hand there is a complementary relationship between financial development and energy consumption in this case energy conservation measures

exchange rate volatility economic growth nexus in uganda abstractthe global financial crisis has disrupted trade and capital flows in most developing economies resulting in an increased volatility of exchange rates we develop an autoregressive distributed lag model to investigate the effect of exchange rate volatility on economic growth in uganda using data spanning the period 1960 2011 we find that exchange rate volatility positively affects economic growth in uganda in both the short run and the long run however in the short run political instability negatively moderates the exchange rate volatility economic growth nexus these results are robust to alternative specifications of the economic growth model

the long run impact of biofuels on food prices more than 40 of us corn is now used to produce biofuels which are used as substitutes for gasoline in transportation biofuels have been blamed universally for past increases in world food prices and many studies have shown that these energy mandates in the us and eu may have a large 30 60 impact on food prices in this paper we use a partial equilibrium framework to show that demand side effects in the form of population growth and income driven preferences for meat and dairy products rather than cereals may play as much of a role in raising food prices as biofuel policy by specifying a ricardian model with differential land quality we find that a significant amount of new land will be converted to farming which is likely to cause a modest increase in food prices however biofuels may increase aggregate world carbon emissions due to leakage from lower oil prices and conversion of pasture and forest land for farming

lessons from first generation biofuels and implications for the sustainability appraisal of second generation biofuels the emergence of second generation 2g biofuels is widely seen as a sustainable response to the increasing controversy surrounding the first generation 1g yet sustainability credentials of 2g biofuels are also being questioned drawing on work in science and technology studies we argue that controversies help focus attention on key often value related questions that need to be posed to address broader societal concerns this paper examines lessons drawn from the 1g controversy to assess implications for the sustainability appraisal of 2g biofuels we present an overview of key 1g sustainability challenges assess their relevance for 2g and highlight the challenges for policy in managing the transition we address limitations of existing sustainability assessments by exploring where challenges might emerge across the whole system of bioenergy and the wider context of the social system in which bioenergy research and policy are done key lessons arising from 1g are potentially relevant to the sustainability appraisal of 2g biofuels depending on the particular circumstances or conditions under which 2g is introduced we conclude that sustainability challenges commonly categorised as either economic environmental or social are in reality more complexly interconnected so that an artificial separation of these categories is problematic

substitution between biofuels and fossil fuels is there a green paradox we show that i subsidies for renewable energy policies with the intention of encouraging substitution away from fossil fuels may accentuate climate change damages by hastening fossil fuel extraction and that ii the opposite result holds under some specified conditions we focus on the case of subsidies for renewable resources produced under increasing marginal costs and assume that both the renewable resources and the fossil fuels are currently in use such subsidies have a direct effect and an indirect effect working in opposite directions the direct effect is the reduction in demand for fossil fuels at any given price the indirect effect is the reduction in the current equilibrium price for fossil fuels which tends to increase the amount of fossil fuels demanded whether the sum of the two effects will actually result in an earlier or later date of exhaustion of the stock of fossil fuels depends on the curvature of the demand curve for energy and of the supply curve for the renewable substitute

an international literature survey on energy economic growth nexus evidence from country specific studies in this paper an extensive review of the rapidly growing in the literature on the nexus between economic growth and four types of energy consumption total energy consumption electricity consumption nuclear consumption and renewable consumption the various hypotheses associated with the causal interaction between these variables along with a survey of the empirical literature are also discussed the survey focuses on country coverage periods modeling techniques and empirical conclusions a general observation from these studies that results are found to be sensitive to methodology and type of energy considered the empirical results for the specific countries surveyed show that i for energy consumption growth nexus 29 supported the growth hypothesis 27 the feedback hypothesis 23 the conservation hypothesis and 21 the neutrality hypothesis ii for the electricity consumption growth nexus 40 supported the growth hypothesis 33 the feedback hypothesis and 27 conservation hypothesis iii for the nuclear consumption growth nexus 60 supported the neutrality hypothesis and 40 the growth hypothesis and iv for the renewable consumption growth nexus 40 supported the neutrality hypothesis 40 the conservation hypothesis and 20 the growth hypothesis these mixed results may be attributed to the different used data selected variables and econometric approaches undertaken

do higher prices for new goods reflect quality growth or inflation much of consumer price index cpi inflation for consumer durables reflects shifts to newer product models that display higher prices not price increases for a given set of goods i examine how these higher prices for new models should be divided between quality growth and price inflation based on a whether consumer purchases shift toward or away from the new models and b whether new model price increases generate higher relative prices that persist through the model cycle i conclude that two thirds of the price increases with new models should be treated as quality growth this implies that cpi inflation for durables has been overstated by almost 2 percentage points per year with quality growth understated by the same magnitude

intertemporal price discrimination and sales strategy under incomplete information this article examines intertemporal price variations to provide a theoretical explanation for them when firms have only incomplete information about consumers reservation prices for the commodity we contend that some intertemporal price variations can result from attempts by firms to discriminate among consumers we demonstrate that such price discrimination is the optimal policy for a seller if consumers have a higher time discount rate than producers

a hotelling model with a ceiling on the stock of pollution abstract environmental agreements such as the kyoto protocol aim to stabilize the amount of carbon in the atmosphere which is mainly caused by the burning of nonrenewable resources such as coal we characterize the solution to the textbook hotelling model when there is a ceiling on the stock of emissions we consider both increasing and decreasing demand for energy we show that when the ceiling is binding both the low cost nonrenewable resource and the high cost renewable resource may be used jointly a key implication is that if energy demand were to decline in the long run we may supplement energy supply through clean renewables to meet the environmental standard but then revert back to using only dirty fossil fuels in the future when the ceiling has become non binding that is the much heralded societal transition to clean energy resources may be short lived

energy consumption carbon dioxide emissions and economic growth the case of saudi arabia abstract this paper investigates the dynamic causal relationships between energy consumption energy price and economic activity in saudi arabia based on a demand side approach we use a johansen multivariate cointegration approach and incorporate co 2 emissions as a control variable the results indicate that there exists at least a long run relationship between energy consumption energy price carbon dioxide emissions and economic growth furthermore a long run unidirectional causality stands from energy consumption to economic growth and co 2 emissions bidirectional causality between carbon dioxide emissions and economic growth and a long run unidirectional causality runs from energy price to economic growth and co 2 emissions in the short run there is unidirectional causality running from co 2 emissions to energy consumption and economic output and from energy price to co 2 emissions even though the energy led growth hypothesis is valid the share of energy consumption in explaining economic growth is minimal energy price is the most important factor in explaining economic growth hence policies aimed at reducing energy consumption and controlling for co 2 emissions may not reduce significantly saudi s economic growth investing in the use of renewable energy sources like solar and wind power is an urgent necessity to control for fossil fuel consumption and co 2 emissions

the relationship between disaggregate energy consumption and industrial production in the united states an ardl approach abstract we re examine the relationship between disaggregate energy consumption and industrial output as well as employment in the united states using the autoregressive distributed lag ardl approach developed by pesaran and pesaran pesaran m h pesaran b 1997 working with microfit 4 0 camfit data ltd cambridge and pesaran shin and smith pesaran m h shin y smith r j 2001 bounds testing approaches to the analysis of level relationships journal of applied econometrics 16 289 326 in particular we focus attention on the following energy consumption variables coal fossil fuels conventional hydroelectric power solar energy wind energy natural gas wood and waste the sample period covers 2001 1 2005 6 our results imply that real output and employment are long run forcing variables for nearly all measures of disaggregate energy consumption

a cobweb model of land use competition between food and bioenergy crops we present a model of interacting cobweb markets and apply it to land use competition between food and bioenergy crops in our model the markets are interlinked on the supply side by the limited availability of land therefore instabilities are transferred between the markets and we find that bioenergy demand affects food price volatility the agents in the model have heterogeneous production capacities representing variation in global land quality when we allow agents to choose price predictor we find that a more sophisticated but costly predictor is concentrated to some key parcels of land which enables the system to reduce instability significantly the system can also be brought closer to a stable state by introducing costs for changing production type but it may then be shifted away from the optimum situation predicted by the corresponding equilibrium model

equilibrium transitions from non renewable energy to renewable energy under capacity constraints abstract we study the transition between non renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy assuming constant variable marginal costs for both energy sources convex adjustment costs and a more expensive renewable energy we show the following with sufficiently abundant non renewable energy endowments the dynamic equilibrium path is composed of a first time phase of only non renewable energy use followed by a transition phase substituting progressively renewable energy to non renewable energy before a last time phase of only renewable energy use the investment into renewable energy may either begin before actual production of renewable energy or be delayed until the energy price achieves a sufficient gap with respect to the renewable energy cost with an initially abundant non renewable resource the features of the transition between non renewable and renewable energy do not depend upon the initial resource stock

simultaneous supplies of dirty energy and capacity constrained clean energy is there a green paradox the effects of two popular second best clean energy policies are analysed using an extended hotelling type resource extraction framework this model features first heterogenous energy sources and second a capacity constrained backstop technology this setup allows for capturing the following two empirical observations first different types of energy sources are used simultaneously despite different production cost second experiences from various european countries show that a further expansion of the use of climate friendly technologies faces substantial technological as well as political constraints we use this framework to analyse if under two policy scenarios a so called green paradox occurs a subsidy for the clean energy as well as an expansion of the capacity of the clean energy are considered the analysis shows that under plausible parameter values both policy measures lead to a weak green paradox however a strong green paradox is only found for the capacity expansion scenario in addition the subsidy is found to be welfare enhancing while the capacity increase is welfare enhancing only if the cost of adding the capacity is sufficiently small we also show the effects of the policies crucially depend on the initial capacity and that under certain scenarios even an extreme green paradox is found

growth renewables and the optimal carbon tax optimal climate policy is investigated in a ramsey growth model of the global economy with exhaustible oil reserves an infinitely elastic supply of renewables stock dependent oil extraction costs and convex climate damages four regimes can occur depending on the initial social cost of oil being larger or smaller than that of renewables and depending on the initial oil stock being large or small we also offer some policy simulations for the first and second regime which illustrate that with a lower discount rate more oil is left in situ and renewables are phased in more quickly we identify the conditions under which the optimal carbon tax rises or decreases subsidizing renewables without a carbon tax induces more oil to be left in situ and a quicker phasing in of renewables but oil is depleted more rapidly initially the net effect on global warming is ambiguous abstract from author

pollution control under emission constraints switching between regimes in this paper we develop a model of pollution control the aim of the society is to maximize the net social benefits which are negatively affected by the emission of pollutants we show that the presence of an upper constraint on pollution growth rate affects the actual trajectory of emissions even when emissions are far below the level where the constraint binds we get three main results first we find that for a society it is optimal to take into account the impact of the latent constraint at the outset of the planning horizon and to modify the emission flows even when the constraint is still slack second we analyze how the constraint works effectively in the intermediate phases before the constraint binds one crucial result is that the constraint on pollution growth may generate the unexpected result of increasing instead of reducing the emissions at the beginning and in the intermediate phases before the constraint binds finally we state the boundary conditions to compute the optimal trajectory of emissions switching between regimes

common long range dependence in a panel of hourly nord pool electricity prices and loads abstract equilibrium electricity spot prices and loads are often determined simultaneously in a day ahead auction market for each hour of the subsequent day hence daily observations of hourly prices take the form of a periodic panel rather than a time series of hourly observations we consider novel panel data approaches to analyse the time series and the cross sectional dependence of hourly nord pool electricity spot prices and loads for the period 2000 2013 hourly electricity prices and load data are characterized by strong serial long range dependence in the time series dimension in addition to strong seasonal periodicity and along the cross sectional dimension i e the hours of the day there is a strong dependence which necessarily has to be accounted for in order to avoid spurious inference when focusing on the time series dependence alone the long range dependence is modelled in terms of a fractionally integrated panel data model and it is shown that both prices and loads consist of common factors with long memory and with loadings that vary considerably during the day due to the competitiveness of the nordic power market the aggregate supply curve approximates well the marginal costs of the underlying production technology and because the demand is more volatile than the supply equilibrium prices and loads are argued to identify the periodic power supply curve the estimated supply elasticities are estimated from fractionally co integrated relations and range between 0 5 and 1 17 with the largest elasticities being estimated during morning and evening peak hours