aggregate demand for electricity in south africa an analysis using the bounds testing approach to cointegration abstract electricity demand in south africa has grown at a very rapid rate over the past decade as part of reform initiatives to enhance long term sustainability of the country s electricity industry south africa s authorities have in recent years sought to develop an electricity pricing framework that is cost reflective and forms the cornerstone of demand management schemes meant to foster changes in consumption behaviour and enhance efficiency in resource use the effects of any pricing policy on aggregate electricity consumption will depend on a useful understanding of the factors that influence electricity demand and the magnitude to which electricity demand responds to changes in such factors in this context this paper applies the bounds testing approach to cointegration within an autoregressive distributed lag framework to examine the aggregate demand for electricity in south africa during the period 1960 2007 the results indicate that in the long run income is the main determinant of electricity demand with electricity prices having an insignificant effect on aggregate electricity demand future pricing policies will need to ensure that electricity prices are cost reflective and enhance efficiency of electricity supply and use

interactions between renewable energy policy and renewable energy industrial policy a critical analysis of china s policy approach to renewable energies this paper analyzes china s policy approach to renewable energies and assesses how effectively china has met the ideal of appropriate interactions between renewable energy policy and renewable energy industrial policy first we briefly discuss the interactions between these two policies then we outline china s key renewable energy and renewable industrial policies and find that china s government has well recognized the need for this policy interaction after that we study the achievements and problems in china s wind and solar pv sector during 2005 2012 and argue that china s policy approach to renewable energies has placed priority first on developing a renewable energy manufacturing industry and only second on renewable energy itself and it has not effectively met the ideal of appropriate interactions between renewable energy policy and renewable energy industrial policy lastly we make an in depth analysis of the three ideas underlying this policy approach that is the green development idea the low carbon leadership idea and indigenous innovation idea we conclude that chinas policy approach to renewable energies needs to enhance the interactions between renewable energy policy and renewable energy industrial policy the paper contributes to a deeper understanding of china s policy strategy toward renewable energies

examining the link between energy consumption carbon dioxide emission and economic growth in latin america and the caribbean abstract this study aims at exploring the bi directional long run relationship between energy consumption carbon dioxide emission and economic growth in the latin american and caribbean countries the canonical cointegrating regression ccr is used to achieve the goal of this study taking the period of 1980 2008 the study arrived at different results while 60 of the countries have a positive bi directional long run relationship between energy consumption carbon dioxide emission and economic growth the others have mixed results the results of the study motivated the researcher to recommend that these countries should increase their energy efficiency increase the share of green energy from their total energy use and increase energy conservation in order to reduce unnecessary waste of energy

renewable energy non renewable energy and economic growth in brazil this study employs brazil s yearly statistics from 1980 to 2010 to explore the causal relationships between the real gdp and four types of energy consumption non hydroelectric renewable energy consumption nhrec total renewable energy consumption trec non renewable energy consumption nrec and the total primary energy consumption tec the cointegration test reveals a long run equilibrium among brazil s real gdp labour capital and each of the four types of consumption the development of the brazilian economy has close ties with capital formation and labour force the influence of nhrec trec on real output is positive and significant while the impacts by nrec tec are insignificant the results from the vector error correction models reveal a unidirectional causality from nhrec to economic growth a bidirectional causality between economic growth and trec and a unidirectional causality from economic growth to nrec or tec without feedback in the long run these findings suggest that brazil is an energy independent economy and that economic growth is crucial in providing the necessary resources for sustainable development expanding renewable energy would not only enhance brazil s economic growth and curb the deterioration of the environment but also create an opportunity for a leadership role in the international system and improve brazil s competition with more developed countries

economic growth and pollutant emissions in tunisia an empirical analysis of the environmental kuznets curve abstract this paper investigates the relationship between economic growth and pollutant emissions for a small and open developing country tunisia during the period 1961 2004 the investigation is made on the basis of the environmental kuznets curve hypothesis using time series data and cointegration analysis carbon dioxide co 2 and sulfur dioxide so 2 are used as the environmental indicators and gdp as the economic indicator our results show that there is a long run cointegrating relationship between the per capita emissions of two pollutants and the per capita gdp an inverted u relationship between so 2 emissions and gdp has been found with income turning point approximately equals to 1200 constant 2000 prices or to 3700 in ppp constant 2000 prices however a monotonically increasing relationship with gdp is found more appropriate for co 2 emissions furthermore the causality results show that the relationship between income and pollution in tunisia is one of unidirectional causality with income causing environmental changes and not vice versa both in the short run and long run this implies that an emission reduction policies and more investment in pollution abatement expense will not hurt economic growth it could be a feasible policy tool for tunisia to achieve its sustainable growth in the long run

environmental kuznets curve hypothesis in pakistan cointegration and granger causality abstract the paper is an effort to fill the gap in the energy literature with a comprehensive country study of pakistan we investigate the relationship between co2 emissions energy consumption economic growth and trade openness in pakistan over the period of 1971 2009 bounds test for cointegration and granger causality approach are employed for the empirical analysis the result suggests that there exists a long run relationship among the variables and the environmental kuznets curve ekc hypothesis is supported the significant existence of ekc shows the country s effort to condense co2 emissions and indicates certain achievement of controlling environmental degradation in pakistan furthermore we find a one way causal relationship running from economic growth to co2 emissions energy consumption increases co2 emissions both in the short and long runs trade openness reduces co2 emissions in the long run but it is insignificant in the short run in addition the change of co2 emissions from short run to the long span of time is corrected by about 10 yearly

environmental kuznets curve in romania and the role of energy consumption abstract the aim of present study is to probe the dynamic relationship between economic growth energy consumption and co 2 emissions for period of 1980 2010 in case of romania in doing so ardl bounds testing approach is applied to investigate the long run cointegration between these variables our results confirm long run relationship between economic growth energy consumption and energy pollutants the empirical evidence reveals that environmental kuznets curve ekc is found both in long and short runs in romania further energy consumption is major contributor to energy pollutants democratic regime shows her significant contribution to decline co 2 emissions through effective implementation of economic policies and financial development improves environment i e reduces co 2 emissions by redirecting the resources to environment friendly projects

electricity outages in ghana are contingent valuation estimates valid african countries experience persistent and serious energy outages but while multiple valuation studies provide estimates of the costs of electricity outages in high income countries evidence is scarce for lower and middle income countries the few studies that assess the value of reliable energy supply rely on the contingent valuation method that is under wide scrutiny this paper aims to provide new estimates of households willingness to pay to reduce electricity outages for ghana and contributes to the debate on the validity of contingent valuation results for energy reliability our results suggest that households are willing to pay ghs 67 17 per month for reliable electricity supply equivalent to 7 of respondents income the results of tests for hypothetical bias wtp wta disparity and income effects suggest that the contingent valuation estimates from this study are robust and can support decision makers in prioritizing energy policies and investments

an estimation of crude oil import demand in turkey evidence from time varying parameters approach abstract the aim of this study is to model crude oil import demand and estimate the price and income elasticities of imported crude oil in turkey based on a time varying parameters tvp approach with the aim of obtaining accurate and more robust estimates of price and income elasticities this study employs annual time series data of domestic oil consumption real gdp and oil price for the period 1966 2012 the empirical results indicate that both the income and price elasticities are in line with the theoretical expectations however the income elasticity is statistically significant while the price elasticity is statistically insignificant the relatively high value of income elasticity 1 182 from this study suggests that crude oil import in turkey is more responsive to changes in income level this result indicates that imported crude oil is a normal good and rising income levels will foster higher consumption of oil based equipments vehicles and services by economic agents the estimated income elasticity of 1 182 suggests that imported crude oil consumption grows at a higher rate than income this in turn reduces oil intensity over time therefore crude oil import during the estimation period is substantially driven by income

controlling measurement errors in models of advertising competition abstract commercial market research firms provide information on advertising variables of interest such as brand awareness or gross rating points that are likely to contain measurement errors this unreliability of measured variables induces bias in the estimated parameters of dynamic models of advertising consequently advertisers either under or overspend on advertising to maintain a desired level of brand awareness monte carlo studies show that the magnitude of bias can be serious when conventional estimation methods such as ordinary least squares and errors in variables are employed to obtain parameter estimates therefore the authors have developed two new approaches that either reduce or eliminate parameter bias using these methods advertisers can determine an unbiased optimal advertising budget even if advertising variables are measured with error the application of these methods to estimate the extent of measurement noise in empirical advertising data is illustrated

demand side management potentials for mitigating energy poverty in south africa abstract south africa is severally posited to be africa s most industrialized nation with an economy heavily reliant on energy with depleted electricity reserve margin which led to massive load shedding and rationing of electricity in 2008 eskom has stepped up the construction of additional power plants to cover for growing supply deficits emerging trends however favour demand side management dsm initiatives as alternatives to building additional supply capacity due to environmental and economic constraints this research evaluates the electricity per capita for 2007 2011 and 2016 on provincial basis assuming 100 and 36 8 residential sector consumption of generated electricity to show declining electricity per capita values a scenario simulation for 100 50 and 30 household participation of cloth washers and cloth dryers optimal dispatch is then modelled to show the enormous dsm potentials in terms of electricity cost reduction and supply flexibility a modified genetic algorithm mga is used in the dispatch of participating loads on the medupi power plant which has been modelled to operate with carbon capture and sequestration ccs technology dsm potentials of 6938 34 mw 3469 18 mw and 2081 51 mw are computed for 100 50 and 30 household participation for cloth washers and cloth dryers

turn on the lights macroeconomic factors affecting renewable energy in pakistan the objective of the study is to examine the relationship between macroeconomic factors i e population growth urbanization industrialization exchange rate price level food production index and live stock production index and renewable energy in pakistan over a period of 1975 2012 in addition this study uses oil rent as an intervening variable to overcome the biasness of the single equation model the results indicate that macroeconomic factors positively contributed to renewable energy consumption in pakistan the causality test indicate that there is a unidirectional causality running towards macroeconomic factors to renewable energy in pakistan however renewable energy granger cause oil rent but not via other route in addition there is bidirectional causality between exchange rate and live stock production in pakistan variance decomposition analysis shows that economic growth has a major contribution to increase renewable energy in pakistan

tests for parameter instability in regressions with i 1 processes this article derives the large sample distributions of lagrange multiplier lm tests for parameter instability against several alternatives of interest in the context of cointegrated regression models the fully modified estimator of phillips and hansen is extended to cover general models with stochastic and deterministic trends the test statistics considered include the supf test of quandt as well as the lm tests of nyblom and of nabeya and tanaka it is found that the asymptotic distributions depend on the nature of the regressor processes that is if the regressors are stochastic or deterministic trends the distributions are noticeably different from the distributions when the data are weakly dependent it is also found that the lack of cointegration is a special case of the alternative hypothesis considered an unstable intercept so the tests proposed here may also be viewed as a test of the null of cointegration against the alternative of no cointegration the tests are applied to three data se

an analysis of optimal advertising under uncertainty we examine the firm s optimal advertising behavior under conditions of uncertainty for the static one period model we show that the firm s attitude toward risk may be responsible for the potential divergence between advertising decisions under uncertainty and those under deterministic conditions for the dynamic multi period model the ultimate impact of uncertainty on advertising is further complicated when the sales response function contains an unknown parameter and the firm wishes to gain more information about it through experimentation we demonstrate that whether it is optimal for the firm to experiment at an advertising rate higher equal to or lower than the myopic one period level would depend on the specification of the response function finally we offer some empirical evidence for our assumption of a quadratic sales response function using time series data of twelve major brands of cigarettes

does financial development increase energy consumption the role of industrialization and urbanization in tunisia this paper assesses the relationship among energy consumption financial development economic growth industrialization and urbanization in tunisia from 1971 to 2008 the autoregressive distributed lag bounds testing approach to cointegration and granger causality tests is employed for the analysis the result confirms the existence of long run relationship among energy consumption economic growth financial development industrialization and urbanization in tunisia long run bidirectional causalities are found between financial development and energy consumption financial development and industrialization and industrialization and energy consumption hence sound and developed financial system that can attract investors boost the stock market and improve the efficiency of economic activities should be encouraged in the country nevertheless promoting industrialization and urbanization can never be left out from the process of development we add light to policy makers with the role of financial development industrialization and urbanization in the process of economic development

the demand for residential industrial and total electricity 1973 1998 this paper estimates residential industrial and total electricity demand by a partial adjustment approach and by a simultaneous equation approach simultaneous equation models are more appropriate since they provide negative price elasticity estimates for the residential industrial and total electricity samples flow adjustment models yield positive price elasticity estimates in some cases suggesting they fail to identify proper supply considerations that may be influencing prices the simultaneous equation approach suggests that residential customers are more price sensitive than industrial customers weather seems to have the greatest impact on the residential sector and cold weather appears to affect demand more than hot weather

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

environmental degradation economic growth and energy consumption evidence of the environmental kuznets curve in malaysia this paper tests for the short and long run relationship between economic growth carbon dioxide co2 emissions and energy consumption using the environmental kuznets curve ekc by employing both the aggregated and disaggregated energy consumption data in malaysia for the period 1980 2009 the autoregressive distributed lag ardl methodology and johansen juselius maximum likelihood approach were used to test the cointegration relationship and the granger causality test based on the vector error correction model vecm to test for causality the study does not support an inverted u shaped relationship ekc when aggregated energy consumption data was used when data was disaggregated based on different energy sources such as oil coal gas and electricity the study does show evidences of the ekc hypothesis the long run granger causality test shows that there is bi directional causality between economic growth and co2 emissions with coal gas electricity and oil consumption this suggests that decreasing energy consumption such as coal gas electricity and oil appears to be an effective way to control co2 emissions but simultaneously will hinder economic growth thus suitable policies related to the efficient consumption of energy resources and consumption of renewable sources are required

natural gas consumption and economic growth in pakistan abstract natural gas is a dominant fuel in pakistan it offers the cheapest and a cleaner alternative source of energy this paper examines the relationship of natural gas consumption and economic growth in pakistan we include capital labor and exports in the model with multivariate framework the ardl bounds testing approach to cointegration and innovative accounting approach are employed to investigate the dynamic causality relationships among the variables we find the existence of long run relationship among the variables natural gas consumption capital labor and exports are positively affecting economic growth in pakistan furthermore we support the natural gas consumption led growth hypothesis and suggest that natural gas conservation policies may retard economic growth

the growth of income and energy consumption in six developing countries this paper reexamines the inter temporal link between energy consumption and income in six developing countries with diverse economic backgrounds and energy statistics in a production function framework we employ the generalized variance decompositions and generalized impulse response techniques to see if the growth of income and energy consumption contains considerable information to predict each other in all countries energy appears as an essential factor of production results indicate that energy may be a relatively more important input than labor and or capital in some countries hence neutrality of energy does not seem to hold

the evolution of price elasticity of electricity demand in south africa a kalman filter application abstract in south africa the electricity mismatch of supply and demand has been of major concern additional to past problems the 2008 electricity crisis made the solution crucial after its damaging consequences to the economy the disagreement on the need and consequences of the continuous electricity price hikes worsens the situation to contribute to the recent electricity debate this paper proposes a time varying price elasticity of demand for electricity the sensitivity of electricity consumption to price fluctuations changes throughout the years the main purpose of this study is the estimation of the price elasticity of electricity in south africa during the period 1980 2005 by employing an advanced econometric technique the kalman filter apart from the decreasing effect of electricity prices to consumption 71 8 in the 1990s and 94 5 in the 2000s in average our results conclude to an important finding the higher the prices for example in the 1980s the higher the sensitivity of consumers to price fluctuations thus further increases of the electricity prices may lead to changes in the behaviour of electricity consumers focusing their efforts on improving their efficiency levels by introducing demand side management techniques or even turning to other sources of cheaper energy

chaos in power pakistan s electricity crisis abstract pakistan is facing a severe electricity crisis due to a persistent and widening gap between demand and available system generating capacity the worsening of power shortages has become a major political issue reflecting the hardships for individuals and businesses it threatens to undermine the credibility and legitimacy of government and to further stress the social fabric of the country the power crisis did not emerge suddenly it is the direct result of imprudent and reckless energy policies over the last three decades these policies have impeded the development of cheap and abundant domestic energy sources they have also resulted in very inefficient fuel mix choices compromising energy and economic security pakistan s energy bankruptcy is ultimately due to massive institutional and governance failure this paper analyzes the problems confronting pakistan s electricity sector and identifies the key elements of a potential policy response to address the country s severe power crisis

electricity demand in kazakhstan properties of electricity demand in transition economies have not been sufficiently well researched mostly due to data limitations however information on the properties of electricity demand is necessary for policy makers to evaluate effects of price changes on different consumers and obtain demand forecasts for capacity planning this study estimates kazakhstan s aggregate demand for electricity as well as electricity demand in the industrial service and residential sectors using regional data firstly our results show that price elasticity of demand in all sectors is low this fact suggests that there is considerable room for price increases necessary to finance generation and distribution system upgrading secondly we find that income elasticity of demand in the aggregate and all sectoral models is less than unity of the three sectors electricity demand in the residential sector has the lowest income elasticity this result indicates that policy initiatives to secure affordability of electricity consumption to lower income residential consumers may be required finally our forecast shows that electricity demand may grow at either 3 or 5 per year depending on rates of economic growth and government policy regarding price increases and promotion of efficiency we find that planned supply increases would be sufficient to cover growing demand only if real electricity prices start to increase toward long run cost recovery levels and policy measures are implemented to maintain the current high growth of electricity efficiency

an empirical analysis of energy demand in namibia abstract using a unique database of end user local energy data and the recently developed autoregressive distributed lag ardl bounds testing approach to cointegration we estimate the long run elasticities of the namibian energy demand function at both aggregated level and by type of energy electricity petrol and diesel for the period 1980 2002 our main results show that energy consumption responds positively to changes in gdp and negatively to changes in energy price and air temperature the differences in price elasticities across fuels uncovered by this study have significant implications for energy taxation by namibian policy makers we do not find any significant cross price elasticities between different fuel types

energy for economic growth industrialization environment and natural resources living with just enough abstract this study investigates the causal relationship between energy consumption i e nuclear energy consumption electricity power consumption and fossil fuels energy consumption and economic growth energy consumption and industrialization i e industrial gdp beverages and cigarettes energy consumption and environmental degradation i e carbon dioxide emissions population density and water resources and finally energy consumption and resource depletion i e mineral depletion energy depletion natural depletion and net forest depletion in pakistan over a period of 1975 2011 the granger causality gc test in the frequency domain using the pierce framework has been employed this gc test in the frequency domain relies on a modified version of the coefficient of coherence which they estimate in a nonparametric fashion and for which they derive the distributional properties the results infer that there exists uni directional causality running from nuclear energy to industrial gdp nuclear energy to water resources and nuclear energy to carbon dioxide emissions but not vice versa similarly electric power consumption granger cause agriculture gdp but not other way around further there is a bi directional causality running between electric power consumption to population density in pakistan fossil fuel granger cause industrial gdp and there is a bidirectional causality running between fossil fuel and population density moreover the findings show that the nature of causality among nuclear energy consumption agriculture nuclear energy consumption population density electric power consumption cigarettes production fossil fuel cigarettes and fossil fuels and agriculture value added are in favour of the neutrality hypothesis in pakistan the conclusion has been strengthen and have a very strong implications in the context of pakistan where we have economic and financial constraints and thus agreeing the bottom line living with the just enough

the demand for electricity in the gcc countries abstract cointegration techniques are used to study the effects of economic variables on electricity demand in the gcc countries a dynamic model is estimated using aggregate data for the six states spanning the period 1970 97 statistical investigations confirm the existence of unit root in all time series employed in the study which called for the use of cointegration and error correction methodologies empirical results indicate that both income and price have an impact on electricity consumption and income and price policies could be effectively facilitated in electricity demand management

modeling energy demand some emerging issues abstract the proliferation of papers on energy demand modeling has offered different dimensions both in terms of methodology and estimation while this development has strengthened our understanding of the subject it may render the identification of gaps in the literature arduous for future research thus this study sets out to document some emerging issues that seem to have engendered new directions on energy demand modeling ranging from asymmetric price responses time varying demand parameters triangulation analyses to seasonal and climate change effects it is hoped that access to this review complemented with the previous ones will facilitate the comprehension of the extant literature as well as areas of future research in energy demand modeling

does financial development lead economic growth a vector auto regression appraisal using a vector autoregression var approach several hypotheses are re examined suggested by the literature concerning the relationship between financial development and economic growth investment and productivity the models use quarterly time series data from ten oecd countries and china innovation accounting or variance decomposition and impulse response function analysis is applied to examine interrelationships between variables in the var system and therefore differs from the more usual granger causality approach in particular it examines the relationship between financial development proxied by total credit at best weak support is found for the hypothesis that financial development leads economic growth

price and income elasticities of residential and industrial electricity demand in the european union this study examines the short and long run price and income elasticities of residential and industrial electricity demand in the european union between 1996 and 2016 instrumental variable models using the between estimator as well as dynamic panel models are employed to present robust estimates and to assess the impact of different methodologies on the reported elasticities the long run price elasticity of residential electricity consumption is estimated between 0 53 and 0 56 these elasticities are more inelastic than that of industrial electricity use which is reported between 0 75 and 1 01 the choice of different econometric methodologies has only moderate impact on the estimates while long run residential income elasticity estimates are moderately inelastic and estimated around 0 61 industrial electricity use tends to be closely tied to income with elasticities between 0 76 and 1 08 electricity demand in all sectors is highly price and income inelastic in the short run additionally population density temperatures and policy measures also influence sectoral electricity use the above estimates can aid the design of european energy and environmental policy

cause and effect of renewable energy consumption on urbanization and economic growth in china s provinces and regions abstract renewable energy development is one of the cleaner production paths for china s transformation of urbanization and economic development recognizing the nexus among them may help china to formulate a targeted policy for efficient and clean energy utilization as well as for carbon reduction based on the panel data of 30 provinces and seven geographical regions over the period of 1997 2015 we apply a bootstrap panel causality test to explore the cause and effect of renewable energy consumption on urbanization and economic growth in china after a cross sectional dependence test and a slope homogeneity test we find that china s renewable energy consumption urbanization and economic growth in one region might be influenced by the others however no causality is found in 80 of provinces and 71 of geographical regions for the nexus of renewable energy consumption and urbanization and no causality is found in 53 of provinces and 43 of geographical regions for the nexus of renewable energy consumption and economic growth besides significant geographical differences are found for the nexus therefore the chinese government should not only strengthen a unified renewable energy management system to advocate regional cooperation but also give full play to the weak joint linkages and adopt differentiated renewable energy policies according to local conditions the interactive mechanism and a virtuous cycle among the three indicators should be established in the medium and long term to help china s energy use towards a cleaner transition

on the generalizability of advertising pulsation monopoly results to an oligopoly this paper introduces for the first time an analytical framework for modeling and analyzing sales response to advertising pulsation for competitive markets of mature products in continuous time for discrete piecewise policies that allow unequal cycle lengths employing a nash equilibrium solution concept this study supported with numerical analysis demonstrates that there is an oligopolistic as opposed to a monopolistic justification for advertising at a constant rate in the presence of concave response functions or advertising according to a pulsing policy in the presence of s shaped response functions the article employs a modeling framework whereby each of a set of competitors responses to advertising spending is governed mainly by lanchester type response is used to analyze the game resulting from cyclical advertising policies that are strictly adhered to by all players a non discounted averaged performance is used to assess the purported optimality of different variants of piecewise constant policies

co2 emissions energy consumption and economic growth in turkey abstract this paper examines the long run and causal relationship issues between economic growth carbon emissions energy consumption and employment ratio in turkey by using autoregressive distributed lag bounds testing approach of cointegration empirical results for turkey over the period 1968 2005 suggest an evidence of a long run relationship between the variables at 5 significance level in turkey the estimated income elasticity of carbon emissions per capita is 0 606 and the income elasticity of energy consumption per capita is 1 375 results for the existence and direction of granger causality show that neither carbon emissions per capita nor energy consumption per capita cause real gdp per capita but employment ratio causes real gdp per capita in the short run in addition ekc hypothesis at causal framework by using a linear logarithmic model is not valid in turkish case the overall results indicates that energy conservation policies such as rationing energy consumption and controlling carbon dioxide emissions are likely to have no adverse effect on the real output growth of turkey

economic growth and environmental degradation the environmental kuznets curve and sustainable development abstract in this paper we critically examine the concept of the environmental kuznets curve ekc it proposes that there is an inverted u shape relation between environmental degradation and income per capita so that eventually growth reduces the environmental impact of economic activity the concept is dependent on a model of the economy in which there is no feedback from the quality of the environment to production possibilities and in which trade has a neutral effect on environmental degradation the actual violation of these assumptions gives rise to fundamental problems in estimating the parameters of an ekc the paper identifies other econometric problems with estimates of the ekc and reviews a number of empirical studies the inference from some such ekc estimates that further development will reduce environmental degradation is dependent on the assumption that world per capita income is normally distributed when in fact median income is far below mean income we carry out simulations combining ekc estimates from the literature with world bank forecasts for economic growth for individual countries aggregating over countries to derive the global impact within the horizon of the bank s forecast 2025 global emissions of so 2 continue to increase forest loss stabilizes before the end of the period but tropical deforestation continues at a constant rate throughout the period

time varying income and price elasticities for energy demand evidence from a middle income panel abstract we estimate time varying income and price elasticities for energy demand for a 26 country middle income balanced panel that spans 1996 2014 to do so we employ a recently developed local linear dummy estimation method to estimate the trend and coefficient functions we find that the price elasticity for energy demand is either insignificant or positive and small while the income elasticity for energy demand behaves in a non linear fashion over time it is always less than unity and is generally within 0 6 0 8 a gdp elasticity of less than one suggests that these middle income countries are on the right hand side of an inverted u energy intensity gdp path that is consistent with the dematerialization process also this finding suggests that energy intensity but not energy consumption in these countries will fall with economic growth hence intensity based targets may be met in a business as usual setting but aggregate or per capita based carbon emissions targets would likely require policy interventions

pulsation in a competitive model of advertising firm s cost interaction the literature reveals contradiction between theoretical results superiority of uniform policy under a concave advertising response function and empirical results concavity of the advertising response function and the superiority of a pulsation policy to reconcile the above difference this paper offers a resolution based on 1 the concavity of the advertising response function 2 the convexity of the firm s cost function and 3 over advertising the resolution is reached upon maximizing the net profit per unit time over the infinite planning horizon subject to an exogenous advertising budget constraint theoretical results for monopolistic markets are found mostly generalized to competitive markets a numerical example is introduced to gain more insight into the theoretical findings and an approach is introduced and implemented to empirically assess the shape of a firm s cost function and the advertising policy to be employed

change in consumer sensitivity to electricity prices in response to retail deregulation a panel empirical analysis of the residential demand for electricity in the united states abstract about ten years have passed since the deregulation of the u s retail electricity market and it is now generally accepted that the available data is adequate to quantitatively assess and compare conditions before and after deregulation this study therefore estimates the changes in price elasticity in the residential electricity market to examine the changes if any in household sensitivity as a result of retail electricity market deregulation policies to residential electricity rates specifically six types of panel data are prepared based on three cross sections all states except for alaska and hawaii and the district of columbia deregulated states and non deregulated states and two time series the period before deregulation and the period after deregulation the panel empirical analysis techniques are used to determine whether or not the variables are stationary and to estimate price elasticity we find that there is no substantial difference in the price elasticity between deregulated and non deregulated states for both periods before deregulation and after deregulation thus it can be said that the deregulation of the retail electricity market has not made consumers more sensitive to electricity rates and that retail deregulation policies are not the cause of price elasticity differences between deregulated and non deregulated states

environmental kuznets curve for carbon emissions in pakistan an empirical investigation this study investigates the relationship between carbon emissions income energy consumption and foreign trade in pakistan for the period 1972 2008 by employing the johansen method of cointegration the study finds that there is a quadratic long run relationship between carbon emissions and income confirming the existence of environmental kuznets curve for pakistan moreover both energy consumption and foreign trade are found to have positive effects on emissions the short run results have however denied the existence of the environmental kuznets curve the short run results are unique to the existing literature in the sense that none of the long run determinants of emissions is significant the contradictory results of short and long run give policy makers the opportunity to formulate different types of growth policies for the two terms taking environmental issues into consideration in addition the uni directional causality from growth to energy consumption suggests that the policy makers should not only focus on forecasting future demand for energy with different growth scenarios but also on obtaining the least cost energy furthermore the absence of causality from emissions to growth suggests that pakistan can curb its carbon emissions without disturbing its economic growth

modelling electricity demand in ghana revisited the role of policy regime changes as policy regime changes demand elasticities are unlikely to be constant since individuals change how they form their expectations and this will change the estimated decision rules in this paper the time varying nature of electricity demand elasticities prior to and post the economic reform period in ghana is analysed using the fm ols three different sample periods pre reform post reform and full period was used in the analysis the result from the full sample period revealed that in the long run electricity demand is significantly affected by industry efficiency industry value added and real per capita gdp urbanization rate however has no significant effect the pre reform estimate showed lower income output and urbanization elasticities but higher industry energy efficiency elasticity relative to the post reform period this suggests that technological change in the pre reform period has been energy saving whilst technological change in the post reform period has been energy consuming the result further showed evidence of changing structure of the economy from the more energy intensive sector to the less energy intensive sector after the reform government should renew her effort in promoting energy saving technologies in the industrial sector and adjust the industrial structure to encourage the expansion of low energy intensive industries or high technology efficient industries

energy security and renewable energy policy analysis of pakistan abstract sustainable energy supply is an important factor for continued economic growth of any society pakistan is among those developing countries which are facing severe shortages of energy now a days the current and past governments in the country have designed various energy policies to fulfill energy demands but could not fill the demand supply gap there has been a shortage of about 5000 mw of electrical supply during summer 2016 a policy for development of renewable energy was framed in 2006 which was aimed to supply sustainable energy to all consumers including those households which have not been supplied electricity and natural gas in rural and far flung areas the policy was extended for implementation in 2011 and is still in use the basis of this policy rests on energy security and self sufficiency social equity and economic benefits this study aims at analyzing renewable energy policy of pakistan and examining and finding the ways to secure energy supplies in future using leap four scenarios business as usual green pakistan nuclear and optimization have been developed to assess the validity of the energy plans the study concludes that green pakistan scenario employing renewable energy technologies having minimum operation and externality costs is the most suitable option in future

the price elasticity of electricity demand in south africa this paper examines the effects of price on the demand for electricity in south africa over the period 1950 83 emphasis is placed on the estimation of the long run own price elasticity of electricity demand an unconstrained distributed lag model is used and the 12 years elasticity is estimated to be 0 90 the policy implications of this finding are discussed

environmental kuznets curve in an open economy a bounds testing and causality analysis for tunisia the environmental kuznets curve hypothesis posits that in the early stages of economic growth environmental degradation and pollution increase however as a nation reaches a certain level of incom

dynamic linkages among energy consumption environment health and wealth in brics countries green growth key to sustainable development abstract the objective of the study is to examine the four pillars of green growth or green environment i e energy environment health and wealth in brics countries namely brazil russia india china and south africa over the period of 1975 2013 the study examines the relationship between energy consumption environment health and its resulting impact on brics economic growth the study used three environmental variables i e agricultural technology carbon dioxide emissions and population density three energy sources i e nuclear energy consumption electricity production from renewable sources and combustible renewable waste two health proxies i e fertility rate total i e births per woman and infant mortality rate and gdp per capita for economic growth these variables were selected due to the vital importance in the brics nations the overall results indicate that environmental variables have a deleterious effect on the brics economic growth while energy sources significantly increases economic growth in the countries health expenditures and infrastructure required proper care of fertility and mortality related health issues in the brics countries the results emphasized the importance of green growth and sustainable developmental policies that help to expedite growth process and welfare of the countries

energy crisis greenhouse gas emissions and sectoral growth reforms repairing the fabricated mosaic abstract the study examined energy crisis and sought solutions for reforms in the largest regions of the world i e east asia pacific europe and central asia latin america the caribbean south asia and sub saharan africa the study used number of growth related factors over the period of 1975 2012 the results indicate significant relationship between electric power shortage and growth related specific factors however the intensity for each factor varies from region to region the results of granger causality verify multiple cause effect channels in the different regions i e feedback hypothesis economic factors driven electric shortage electric shortage driven economic factors and no causal relationship between the variables the results of variance decomposition analysis indicate that greenhouse gas emissions exhibit the largest contribution due to shortages in the electric power transmission the study opens the debate for environmentalists government and non government officials to formulate the sustainable policies related to energy reforms

economic growth energy consumption financial development international trade and co2 emissions in indonesia this study examines the linkages among economic growth energy consumption financial development trade openness and co2 emissions over the period of 1975q1 2011q4 in the case of indonesia the stationary analysis is performed by using zivot andrews structural break unit root test and the ardl bounds testing approach for a long run relationship between the series in the presence of structural breaks the causal relation between the concerned variable is examined by the vecm granger causality technique and robustness of causal analysis is tested by innovative accounting approach iaa our results confirm that the variables are cointegrated it means that the long run relationship exists in the presence of structural break stemming in the series the empirical findings indicate that economic growth and energy consumption increases co2 emissions while financial development and trade openness compact it the vecm causality analysis has shown the feedback hypothesis between energy consumption and co2 emissions economic growth and co2 emissions are also interrelated i e bidirectional causality financial development granger causes co2 emissions the study opens up a new policy insights to control the environment from degradation by using energy efficient technologies financial development and trade openness can also play their role in improving the environmental quality

a fractional cointegration analysis of purchasing power parity a generalized notion of cointegration called fractional cointegration is introduced to examine the long run purchasing power parity ppp hypothesis by allowing deviations from equilibrium to follow a fractionally integrated process the fractional cointegration analysis can capture a wider range of mean reversion behavior than standard cointegration analyses this gain is flexibility in modeling subtle mean reverting dynamics is found to be important for a proper evaluation of long run ppp empirical results based on historical data for the 1914 1989 period show that ppp reversion exists and can be characterized by a fractionally integrated process in three out of five countries studied the results support ppp as a long run phenomenon though significant short run deviations from ppp can exist

energy consumption and gdp in tunisia cointegration and causality analysis abstract in this paper the johansen cointegration technique is used to examine the causal relationship between per capita energy consumption pcec and per capita gross domestic product pcgdp for tunisia during the 1971 2004 period in order to test for granger causality in the presence of cointegration among the variables a vector error correction model vecm is used instead of a vector autoregressive var model our estimation results indicate that the pcgdp and pcec for tunisia are related by one cointegrating vector and that there is a long run bi directional causal relationship between the two series and a short run unidirectional causality from energy to gross domestic product gdp the source of causation in the long run is found to be the error correction terms in both directions hence an important policy implication resulting from this analysis is that energy can be considered as a limiting factor to gdp growth in tunisia conclusions for tunisia may also be relevant for a number of countries that have to go through a similar development path of increasing pressure on already scarce energy resources

examining the bi directional long run relationship between renewable energy consumption and gdp growth abstract the bi directional long run relationship between renewable energy consumption and gdp growth has been investigated in high income upper middle income lower middle income and high income countries to achieve this goal the fully modified ols was utilized the results revealed that 79 of the countries have a positive bi directional long run relationship between renewable energy consumption and gdp growth this represents the feedback hypothesis on the other hand 19 of the countries showed no long run relationship between the variables this represents the neutrality hypothesis besides 2 of the countries showed a one way long run relationship from gdp growth to renewable energy consumption confirming the conservation hypothesis and from renewable energy consumption and gdp growth representing the growth hypothesis despite the mixed results across countries it has been proved that the more persistent and significant the bi directional long run relationship between the variables is the higher the income countries are

economic growth and co2 emissions in malaysia a cointegration analysis of the environmental kuznets curve this paper attempts to establish a long run as well as causal relationship between economic growth and carbon dioxide co2 emissions for malaysia using data for the years from 1980 to 2009 the environmental kuznets curve ekc hypothesis was tested utilizing the auto regressive distributed lag ardl methodology the empirical results suggest the existence of a long run relationship between per capita co2 emissions and real per capita gross domestic product gdp when the co2 emissions level is the dependent variable we found an inverted u shape relationship between co2 emissions and gdp in both short and long run thus supporting the ekc hypothesis the granger causality test based on the vector error correction model vecm presents an absence of causality between co2 emissions and economic growth in the short run while demonstrating uni directional causality from economic growth to co2 emissions in the long run

estimation uncertainty and optimal advertising decisions in this paper we develop a normative model that is built on an empirically relevant foundation we observe that decision makers among them advertisers rely on estimated relationships in reaching resource allocation decisions and we investigate the normative implications of this process in particular we explore the effects of uncertainty stemming from the use of sample estimates of population parameters in general we find that ignoring this estimation related uncertainty leads to suboptimal decisions

underlying trends and seasonality in uk energy demand a sectoral analysis this paper demonstrates the importance for energy demand modelling of allowing for trends and seasonal effects that are stochastic in form inherent underlying trends may be non linear and reflect not only technical progress which usually produces greater energy efficiency but also other factors such as changes in consumer tastes and the economic structure that may be working in the opposite direction using quarterly unadjusted data for various sectors in the uk it is shown that unless energy demand models are formulated so as to allow for stochastic trends and seasonals estimates of price and income elasticities could be seriously biased

advertising budget allocation under uncertainty this article presents a model for the allocation of an advertising budget to geographic market segments or territories when the sales response to advertising in each segment is characterized by a probability distribution it is shown that allocation decisions that are based on the expected sales response may be associated with a relatively large degree of risk and therefore non optimal to a risk averse manager the model derives an efficient frontier in terms of the expected profit and its variance resulting from alternative budget allocations the manager then chooses the optimal allocation based on his her preference function

the long run price sensitivity dynamics of industrial and residential electricity demand the impact of deregulating electricity prices abstract this study examines the demand side of ghana s electricity sector we test two important related hypotheses 1 deregulation of electricity price does not promote energy conservation and 2 demand price relationship is not an inverted u shaped the stock and watson dynamic ols is used to address the so called second order bias the result showed that deregulation of electricity price in ghana has induced behaviours that are more consistent with energy conservation improvements the demand price relationship is an inverted u which suggests that there is a price range that end users can tolerate further price rise and still increase their consumption of electricity however the degree of price tolerability is higher for residential consumers than industrial consumers the simulation results showed that further economic growth is likely to compromise energy conservation but more in the industrial sector than the residential sector on the other hand future crude oil price is likely to deteriorate energy conservation in the initial years after 2016 but this trend is likely to reverse after the year 2020 pricing mechanisms are potent to induce energy conservation but inadequate the results suggest that they should be complemented with other stringent policies such as a mandatory energy reduction policy investment in renewables and personalization of energy efficiency programs

energy consumption and economic growth in new zealand results of trivariate and multivariate models abstract this study examines the energy consumption growth nexus in new zealand causal linkages between energy and macroeconomic variables are investigated using trivariate demand side and multivariate production models long run and short run relationships are estimated for the period 1960 2004 the estimated results of demand model reveal a long run relationship between energy consumption real gdp and energy prices the short run results indicate that real gdp granger causes energy consumption without feedback consistent with the proposition that energy demand is a derived demand energy prices are found to be significant for energy consumption outcomes production model results indicate a long run relationship between real gdp energy consumption and employment the granger causality is found from real gdp to energy consumption providing additional evidence to support the neoclassical proposition that energy consumption in new zealand is fundamentally driven by economic activities inclusion of capital in the multivariate production model shows short run causality from capital to energy consumption also changes in real gdp and employment have significant predictive power for changes in real capital

energy crisis and potential of solar energy in pakistan abstract energy is the basic need of modern life pakistan is an energy deficient country energy crisis is making bad impacts and destroying the economy the current study investigates the relationship between the energy and demand supply in pakistan the purpose of this research is to evaluate the real reasons behind the current energy crisis we want to find supplementary and alternate energy sources to cut down the load on the national energy mix we select different areas and conduct our research and find the best possible renewable energy sources in this paper we proposed the solution and best available indigenous resource in energy demanding areas

industrial electricity demand for turkey a structural time series analysis abstract this research investigates the relationship between turkish industrial electricity consumption industrial value added and electricity prices in order to forecast future turkish industrial electricity demand to achieve this an industrial electricity demand function for turkey is estimated by applying the structural time series technique to annual data over the period 1960 to 2008 in addition to identifying the size and significance of the price and industrial value added output elasticities this technique also uncovers the electricity underlying energy demand trend uedt for the turkish industrial sector and is as far as is known the first attempt to do this the results suggest that output and real electricity prices and a uedt all have an important role to play in driving turkish industrial electricity demand consequently they should all be incorporated when modelling turkish industrial electricity demand and the estimated uedt should arguably be considered in future energy policy decisions concerning the turkish electricity industry the output and price elasticities are estimated to be 0 15 and 0 16 respectively with an increasing but at a decreasing rate uedt and based on the estimated equation and different forecast assumptions it is predicted that turkish industrial electricity demand will be somewhere between 97 and 148 twh by 2020

shocks effects of macroeconomic variables on natural gas consumption in nigeria structural var with sign restrictions abstract this paper has examined the transmission of shocks from macroeconomic variables namely money supply inflation exchange rate and real gdp onto natural gas consumption using structural var svar model with sign restrictions the results revealed that both in the short run and long run natural gas consumption responds significantly to the shocks emanating from money supply and real gdp while its response to inflation shock is significant only in the short run but exchange rate shock is not significant however money supply has contributed greater proportion of the shocks followed by the real gdp inflation and exchange rate in the ordering of the variance decomposition the paper recommends that nigerian authorities adjust the monetary policy tools towards regulating the money supply and checking the inflation rate to ensure increased demand for natural gas and sustained economic growth on the response of natural gas consumption to the shock in the exchange rate since the shock is positive though insignificant it implies that depreciation of the exchange rate can discourage the demand for foreign exchange imports and boost the local production which would reciprocally lead to more natural gas consumption and improved growth in the country

long term electricity demand in china from quantitative to qualitative growth abstract this paper develops scenarios of electricity demand in china until 2010 at a national a sectoral and a regional level it takes into account the recent macroeconomic downturn in the chinese economy and the potential effects of deregulation and price increases in the power sector the medium growth scenario hints at a gross electricity demand of 1500 twh in 2010 should the structural change from agriculture and heavy industry towards light industry and services accelerate electricity demand may be another 10 lower these figures are significantly below the projections fixed in the government s 9th five year plan which forecasts a demand of 2500 twh the aggregate and sectoral scenarios imply that current development plans for generating capacity and coal consumption until 2010 too need to be scaled down the disaggregation at the level of the 13 inter provincial and provincial power grids hints at potential regional discrepancies the large industrial areas in eastern china and the central region are likely to face overcapacity whereas north china and the peripheral regions may face deficits

the marketing mix decision under uncertainty this paper develops a marketing mix model under uncertainty using the capital asset pricing model capm valuation framework the model is general because it treats price advertising and personal selling simultaneously and allows for general patterns of uncertainty because the manager often lacks precise quantitative information about the sales response function the analysis focuses on the qualitative properties of the model the methodology of comparative statics is used to determine how the marketing mix should be modified when market conditions change specifically the comparative statics are shown to depend on how advertising and personal selling influence price sensitivity the interaction between advertising and personal selling and the relationship between sales and the return earned in the capital markets the comparative statics for risk depend in addition on the precise mathematical form with which uncertainty enters the random demand function i e additive multiplicative or generalize

an econometric analysis of the drivers for residential heating consumption in the uk and germany abstract affecting millions of europeans energy poverty is increasingly high on the political agenda this paper compares space and water heating demand at household level in germany and in the united kingdom uk between 1991 and 2015 the elasticities of consumption of space and water heating with respect to price income and heating degree days hdd are examined using non parametric models domestic heating consumption is highly elastic with hdd in both countries and hdd elasticities are found to be higher in the uk from a certain income threshold heating demand decreases as income increases in german households whereas demand rises with higher incomes in the uk high price elasticities indicate that uk households are very responsive to energy conservation measures therefore implying that a pricing policy will effectively reduce heating consumption however in germany the impact of pricing policies is unclear thus the most effective policy measure to decrease domestic heating consumption in germany in the long run should be one which targets improvements of building envelope performance levels

revisiting the environmental kuznets curve in a global economy the present study deals with an empirical investigation between co2 emissions energy intensity economic growth and globalization using annual data over the period of 1970 2010 for turkish economy we applied unit root test and cointegration approach in the presence of structural breaks the direction of causality between the variables is investigated by applying the vecm granger causality approach our results confirmed the existence of cointegration between the series the empirical evidence reported that energy intensity and economic growth globalization increase condense co2 emissions the results also validated the presence of environmental kuznets curve ekc the causality analysis shows bidirectional causality between economic growth and co2 emissions this implies that economic growth can be boosted at the cost of environment

renewable energy in five south east asian countries review on electricity consumption and economic growth abstract the present study is an archival statistical overview of the possibility of renewable energy production in five south east asian countries and their economic capacity the five south east asian countries under review are the philippines thailand malaysia indonesia and singapore all of which have a combined population of 420 million this number is a little less than the population of 25 european countries these five countries have created a large market in the world and have enjoyed significant economic growth in recent years tropical climate in the region facilitates the potential for using clean and green energies this article clarifies the effective relation between energy capacities and economic indices in these countries and analyzes the results using a survey the paper shows that despite the shortage of energy in these countries brought by their fast economic growth the share of renewable energy in energy production is constantly declining and more reliance is still placed on fossil fuels for energy production

co2 emissions energy consumption and output in france abstract this paper examines the dynamic causal relationships between pollutant emissions energy consumption and output for france using cointegration and vector error correction modelling techniques we argue that these variables are strongly inter related and therefore their relationship must be examined using an integrated framework the results provide evidence for the existence of a fairly robust long run relationship between these variables for the period 1960 2000 the causality results support the argument that economic growth exerts a causal influence on growth of energy use and growth of pollution in the long run the results also point to a uni directional causality running from growth of energy use to output growth in the short run

factors impacting diverging paths of renewable energy a review abstract considered an essential factor for countries development energy demand is growing worldwide unlike conventional sources the use of renewable energy sources has multiple benefits including increased energy security sustainable economic growth and pollution reduction in particular greenhouse gas emissions nevertheless there is a considerable difference in the share of renewable energy sources in national energy portfolios this study conducts a systematic literature review to identify drivers and barriers which could help understanding the diverging paths of renewable energy deployment for countries among a total of 1431 academic studies 60 qualitative and quantitative studies were identified using a multistage selection process designated manuscripts were explored in detail including publication years length of the studies countries represented and renewable energy sources referenced factors explaining countries renewable energy deployments were defined and organized into seven main categories economic environmental political regulatory social technical potential and technological within these categories economic considerations appeared most frequently across manuscripts while environmental factors were least represented these categories were then classified as drivers barriers or undetermined towards renewable energy deployment based on a one sample proportion statistical test economic environmental and social factors were found to be drivers whereas political regulatory technical potential and technological factors were not classified as either a driver or a barrier i e undetermined each main category contains several subcategories among which only national income was found to have a positive impact whereas all other subcategories were considered undetermined no significant barriers to the deployment of renewable energy sources were found over the analyzed period

industrial and residential electricity demand dynamics in japan how did price and income elasticities evolve from 1989 to 2014 abstract this study estimates the price and income elasticities of industrial and residential electricity demand in japan with the annual data from 1989 to 2014 a time varying parameter tvp model with the kalman filter is applied to monitor the evolution of consumer behaviors in the post bubble period given the exogenous shock financial crisis in 2008 and the structural breaks electricity deregulation and fukushima daiichi crisis the tvp model can provide a robust estimation of elasticities and can detect the outliers and the structural breaks the results suggest that both industrial and residential consumers become less sensitive to price after the electricity deregulation and the financial crisis and more sensitive to price after the fukushima daiichi crisis especially the industrial sector is less sensitive to price after the retail deregulation by contrast the income elasticities of industrial and residential sector consumers are stable during the examined period results also indicate that a negative relationship exists between the price elasticity of electricity demand and the price level of electricity after the electric sector deregulation some insights on the further electric sector reform and the environmental taxation in japan are also provided

the saving and investment nexus for china evidence from cointegration tests the saving and investment nexus as postulated by feldstein and horioka fh 1980 is revisited the saving investment correlation for china is estimated over the periods 1952 1998 and 1952 1994 the latter culminating in a period of fixed exchange rate regime amongst the key results it is found that saving and investment are correlated for china for both the period of the fixed exchange rate and the entire sample period with high saving investment correlation the results suggest that the chinese economy is in conformity with the fh hypothesis this is a valid outcome for in china capital mobility was fairly restricted over the 1952 1994 period as indicated by the relatively low foreign direct investment