estimating residential demand for electricity in greece abstract this paper examines the residential demand for electricity in greece the issues of structural stability price and income sensitivity of both long and short run residential demand for electricity in greece were examined employing monthly data over the period 1986 1999 the long run residential demand for electricity is estimated taking into account changes in weather conditions weighted by the size of the population employing multivariate framework analysis a long run residential demand function for electricity sensitive to real income price level and weather conditions is found to exist and the importance of short run deviations is presented using vector error correction model vecm estimation the empirical evidence suggests the presence of a stable residential demand for electricity in greece both in the long and short run periods and the policy implications of such a relationship are presented

scenario based forecast for the electricity demand in qatar and the role of energy efficiency improvements abstract we model the electricity consumption in the market segment that compose the qatari electricity market we link electricity consumption to gdp growth and population growth building on the estimated model we develop long range forecasts of electricity consumption from 2017 to 2030 over different scenarios for the economic drivers in addition we proxy for electricity efficiency improvements by reducing the long run elasticity of electricity consumption to gdp and population we show that electricity efficiency has a crucial role in controlling the future development of electricity consumption energy policies should consider this aspect and support both electricity efficiency improvement programs as well as a price reform

factor demand technical change and inter fuel substitution in africa abstract the translog production function has been widely used in applied production analysis due to its flexibility and superiority over other functional forms this study develops a translog production function for a group of african countries the random effects model is estimated using generalized least squares estimator the main findings are first output in africa is driven by a more intensive use of petroleum and electricity and to a lesser extent capital labor and coal relative to technological progress second african production technology exhibits increasing returns to scale suggesting a path towards market entry barriers third technical change is scale biased and factor augmenting albeit very slow fourth all energy inputs are substitutes indicating africa s potential to proportionally switch towards cleaner fuels without adversely affecting economic growth finally and perhaps more generally the study reinforces the assertion that imposing restrictions like homotheticity homogeneity or separability on the production technology is unrealistic and should rather be a testable hypothesis within any applied analysis in view of the documented findings relevant implications for africa are discussed

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

how urbanization affects co2 emissions in malaysia the application of stirpat model we investigate the impact of urbanization on co2 emissions by applying the stochastic impacts by regression on population affluence and technology stirpat in the case of malaysia over the period of 1970q1 2011q4 empirically after testing the integrating properties of the variables using the unit root test we applied the bayer hanck combined cointegration approach to examine the cointegration relationship between the variables further we tested the robustness of the long run relationship in the presence of structural breaks using ardl bounds testing approach the causal relationship between the variables is investigated by applying the vecm granger causality test our results validate the existence of cointegration in the presence of structural breaks the empirical results exposed that economic growth is a major contributor to co2 emissions besides energy consumption raises emissions intensity and capital stock boosts energy consumption trade openness leads affluence and hence increases co2 emissions more importantly we find that the relationship between urbanization and co2 emissions is u shaped i e urbanization initially reduces co2 emissions but after a threshold level it increases co2 emissions the causality analysis suggests that the urbanization granger causes co2 emissions

determinants of import demand for non renewable energy petroleum products empirical evidence from nigeria abstract this study estimated determinants of import demand for refined petroleum products in nigeria for the period 1984 2013 it employed the autoregressive distributed lag ardl bounds test cointegration method and analysed both long run and short run determinants of import demand for total and specific petroleum products in the long run aggregate and sectoral incomes are significant determinants of import of refined kerosene further real effective exchange rate reer aggregate income gdp manufacturing sector s income domestic energy production dep and population growth rate pgr are drivers of import of refined motor spirit moreover reer dep and manufacturing sector s income are propellers of import of refined distillate fuel also reer and total output of petroleum products are major drivers of total import of refined petroleum products short run results show that previous period gdp pgr and manufacturing and service sectors incomes are determinants of import demand for refined kerosene moreover reer gdp previous pgr and manufacturing sector s income exert significant effects on the import of refined motor spirit further significant effects of reer dep previous pgr domestic output of the product and manufacturing and service sectors incomes on the import demand for distillate fuel were found policy implications of the foregoing are articulated in the paper

is the energy led growth hypothesis valid new evidence from a sample of 85 countries abstract the energy growth literature contains a large number of discussions on the causal relationship between energy consumption and economic growth the central debate focuses on whether energy consumption contributes or not to economic growth since it has direct implications for the formulation of strategic policies nevertheless current studies cannot provide a conclusive suggestion due to mixed causality results this inconclusive evidence is potentially attributed to model specifications and the stage of economic development of the countries under investigation hence this study attempts to empirically re investigate the validity of the energy led growth hypothesis using a different model specification and different stages of economic development for 85 selected countries around the globe overall although the causality results are mixed among countries we do find a systematic pattern in particular granger causality models with three and four variables are more likely to support the hypothesis compared to their counterparts that contain only two variables in addition both developed and developing countries are more likely to support the energy led growth hypothesis compared to the less developed or low income countries therefore causality results are very sensitive to the choice of the model specification along with the stages of economic development finally energy conservation policies should only focus on low income countries as these policies may not retard the process of economic growth

econometric modeling of electricity consumption in post war lebanon this paper applies econometric models to investigate determinants of electrical energy consumption in post war lebanon the impact of the gross domestic product gdp proxied by total imports ti and degree days dd on electricity consumption is investigated over different time spans covering the period from 1993 to 1997 the time spans are chosen according to the rationing level of electricity supply for the 1993 1994 time span ti is found to be a significant determinant of energy consumption whereas dd has a negative correlation this inconsistency might be attributed to an extensive rationing policy followed during this period for the 1995 1997 time span which includes reduced rationing period 1995 all electrical energy consumption determinants are found to be significant at the 5 significance level analysis results for the rationing free 1996 1997 time span also show the significance of ti and dd at the 5 level furthermore cointegration analysis for the 1995 1997 and 1996 1997 subsets reveals the existence of a long run relationship between all variables in addition error correction models for both subsets are developed to predict short run dynamics finally statistical performance measures such as mean square error mean average deviation and mean average percentage error are presented for all models

short and long run demand for energy in mexico a cointegration approach abstract the objective of this paper is to estimate the demands for the different types of energy consumption for the mexican economy over the period 1965 2001 these demands are modeled as a function of output and the own real price the johansen j econ dynamics control 12 1988 231 procedure and the likelihood ratio tests indicate the existence of long run and stable relationships between each type of energy demand and income with the exception of the industrial sector where the cointegrating vector also includes the relative prices the weak exogeneity tests indicate that energy consumption and income do not reject the null hypothesis of weak exogeneity when relative prices are weak exogenous the final econometric models show that relative prices in the short run are relevant in all cases with the exception of the residential sector these results indicate that in mexico the demand for energy is fundamentally driven by income and that the effect of the relative prices is basically concentrated on the short run with the exception of the industrial sector which also shows a long term price impact the strong dependence of energy consumption with respect to income and the price inelastic response indicates that it is necessary to introduce strong measures to decouple energy consumption from output in order to obtain sustainable economic growth in mexico

do urbanization income and trade affect electricity consumption across chinese provinces abstract the aim of this paper is to investigate the short and long run links among urbanization output gross domestic product gdp trade openness and electricity consumption in china using a rich dataset at the provincial level the short run granger causality analysis discloses a unidirectional causal relationship running from electricity to output and weak feedback effects between trade and urbanization the long run granger causality analysis shows output urbanization and trade trigger electricity consumption whereas trade urbanization and electricity cause output the group mean and lambda pearson causality tests reveal a large heterogeneity in the long run effects which suggests there is no one size fits all policy and each region should formulate a differentiated urbanization growth strategy based on its own characteristics to control electricity utilization

electricity consumption real gdp causality nexus evidence from a bootstrapped causality test for 30 oecd countries the goal of this paper is to examine any causal effects between electricity consumption and real gdp for 30 oecd countries we use a bootstrapped causality testing approach and unravel evidence in favour of electricity consumption causing real gdp in australia iceland italy the slovak republic the czech republic korea portugal and the uk the implication is that electricity conservation policies will negatively impact real gdp in these countries however for the rest of the 22 countries our findings suggest that electricity conversation policies will not affect real gdp

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

energy consumption and gdp causality relationship in g 7 countries and emerging markets abstract the causality relationship between energy consumption and income is a well studied topic in energy economics this paper studies the time series properties of energy consumption and gdp and reexamines the causality relationship between the two series in the top 10 emerging markets excluding china due to lack of data and g 7 countries we discover bi directional causality in argentina causality running from gdp to energy consumption in italy and korea and from energy consumption to gdp in turkey france germany and japan hence energy conservation may harm economic growth in the last four countries

how does energy consumption affect china s urbanization new evidence from dynamic threshold panel models abstract energy consumption may play different roles at different stages of urbanization and economic growth given china s rapid economic development and urbanization process this study tries to explore the possible nonlinear relationship between energy consumption and urbanization in china against the background of promoting new type urbanization the level of china s urbanization is evaluated comprehensively using the entropy method a newly developed dynamic threshold panel model is employed to examine the nexus of energy consumption and comprehensive urbanization with full consideration of heterogeneous characteristics the panel data vector autoregression or pvar model is also used to estimate the direct effects of various energy consumption patterns on the urbanization the empirical results indicate that the nexus of energy consumption and urbanization is indeed nonlinear and that energy consumption is conducive to promote china s urbanization at the current stage of development however the positive effect decreases when there is an increase in energy consumption intensity and energy consumption scale whereas the effect increases with the promotion of energy consumption structure

short run and long run elasticities of import demand for crude oil in turkey abstract the aim of this study is to attempt to estimate the short run and the long run elasticities of demand for crude oil in turkey by the recent autoregressive distributed lag ardl bounds testing approach to cointegration as a developing country turkey meets its growing demand for oil principally by foreign suppliers thus the study focuses on modelling the demand for imported crude oil using annual data covering the period 1980 2005 the bounds test results reveal that a long run cointegration relationship exists between the crude oil import and the explanatory variables nominal price and income but not in the model that includes real price in domestic currency the long run parameters are estimated through a long run static solution of the estimated ardl model and then the short run dynamics are estimated by the error correction model the estimated models pass the diagnostic tests successfully the findings reveal that the income and price elasticities of import demand for crude oil are inelastic both in the short run and in the long run

household electricity end use consumption results from econometric and engineering models information about total electricity consumption is available for most households however the electricity consumption related to different end uses e g space heating lighting and services from household appliances are usually not metered metering data are costly to achieve and in this paper we study two methods for end use estimation which can be applied on household data for appliance holdings demographic and economic variables the first method is the engineering model which has been used to calculate the so far only documented norwegian end use results applied on data from a norwegian energy survey the second method is an econometric conditional demand model applied on data from the same survey we compare the numerical results from the two models and give some recommendations regarding choice of end use approach and what questions to implement in household surveys designed to disaggregate electricity consumption

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

electricity demand for south korean residential sector abstract this study estimates the electricity demand function for the residential sector of south korea with the aim of examining the effects of improved energy efficiency structural factors and household lifestyles on electricity consumption in the study time series data for the period from 1973 to 2007 is used in a structural time series model to estimate the long term price and income elasticities and annual growth of underlying energy demand trend uedt at the end of the estimation period the result shows a long term income elasticity of 1 33 and a long term price elasticity of 0 27 with 0 93 as the percentage growth of uedt at the end of the estimation period this result suggests that in order to encourage energy efficiency in the residential sector the government should complement the market based pricing policies with non market policies such as minimum energy efficiency standards and public enlightenment

does urbanization lead to more direct and indirect household carbon dioxide emissions evidence from china during 1996 2012 china is experiencing a stage of rapid urban development the energy consumption and related carbon dioxide emissions of households continue to increase this paper calculates direct and indirect carbon dioxide emissions of households based on the input output method in china from 1996 to 2012 the results reveal that there were more total carbon dioxide emissions from urban households than from rural households far more indirect emissions from urban households than from rural households slightly more direct emissions from urban households than from rural households and differences in direct carbon dioxide emissions from various fuels and in indirect emissions from various sectors between urban and rural households to examine the causal relationship between urbanization and the carbon dioxide emissions of households cointegration and granger causality tests are applied a unidirectional causal relation was found running from urbanization to both direct and indirect household carbon dioxide emissions and the direct and indirect carbon dioxide emissions of households would increase 2 9 and 1 1 respectively for every increase of one percent in urbanization we discuss the reasons of why the development of urbanization will lead to more household direct and indirect carbon dioxide emissions and suggest certain policy implications for urbanization and carbon dioxide emissions based on the results of this study

residential electricity demand dynamics in turkey abstract this article provides fresh empirical evidences for the income and price elasticies of the residential energy demand both in the short run and long run for turkey over the period 1968 2005 using the bounds testing procedure to cointegration the computed elasticities of income and price are consistent with the previous studies and as expected the long run elasticities are greater than the short run elasticities an augmented form of granger causality analysis is implemented among residential electricity income price and urbanization in the long run causality runs interactively through the error correction term from income price and urbanization to residential energy but the short run causality tests are inconclusive the parameter stability of the short run as well as long run coefficients in the residential energy demand function are tested the results of these tests display a stable pattern

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

analysts reactions to warnings of negative earnings surprises both the popular press and research literature report increasing use of short horizon earnings guidance referred to hereafter as warnings primarily before negative earnings surprises 1 while it is claimed that investors and analysts have little tolerance for disappointments feel misled by the failure to warn lose confidence in management and vote with their feet by selling off their shares in companies which do not warn kasznik and lev 1995 reported findings suggesting the opposite specifically they found that controlling for the magnitude of the negative earnings surprise firms that warn tend to experience more negative stock price reactions and more negative analyst earnings forecast revisions than those providing no warning in this paper we investigate analysts reactions to qualitative warnings of adverse earnings and attempt to reconcile analysts more negative forecast revisions as documented by kasznik and lev 1995 and the apparently conflicting anecdotal evidence that suggests more positive responses

energy consumption and economic growth in the next 11 countries the bootstrapped autoregressive metric causality approach abstract departing from previous literature using bootstrapped autoregressive metric causality approach which is more robust against non stationarity and break problems than lag augmented tests this study analyzes causal relation between economic growth and energy consumption in the next 11 countries estimating a trivariate model consisting of gdp per capita energy consumption per capita and gross capital formation it was found that the neutrality hypothesis is valid for all of the countries except for turkey these findings imply that energy conservation oriented policies should be implemented in bangladesh egypt indonesia iran korea mexico pakistan and philippines in the case of turkey a unidirectional causal nexus was found from energy consumption to economic growth since the growth hypothesis is valid energy conservation policy poses an obstacle for economic growth in turkey

how do urban households in china respond to increasing block pricing in electricity evidence from a fuzzy regression discontinuity approach abstract china is the largest electricity consumption country after it has passed the united states in 2011 residential electricity consumption in china grew by 381 35 12 85 per annum between 2000 and 2013 in order to deal with rapid growth in residential electricity consumption an increasing block pricing policy was introduced for residential electricity consumers in china on july 1st 2012 using difference in differences models with a fuzzy regression discontinuity design we estimate a causal effect of price on electricity consumption for urban households during the introduction of increasing block pricing policy in guangdong province of china we find that consumers do not respond to a smaller approximately 8 increase in marginal price however consumers do respond to a larger increase in marginal price an approximately 40 increase in marginal price induces an approximately 35 decrease in electricity use 284 kw h per month our results suggest that although the increasing block pricing could affect the behavior of households with higher electricity use there is only a limit potential to overall energy conservation

the electricity consumption versus economic growth of the polish economy abstract the aim of this contribution is an investigation of causal interdependences between electricity consumption and gdp in poland our research was conducted for total electricity consumption as well as for the industrial consumption of electricity in order to reflect the causality between gdp and electricity consumption properly we performed our investigations in a three dimensional framework with employment chosen as an additional variable we used reliable quarterly data from the period q1 2000 q4 2009 in order to check the stability of the causalities the investigations were performed on two samples a full sample and a pre crisis i e q1 2000 q3 2008 subsample we applied both traditional methods and some recently developed econometric tools we found feedback between total electricity consumption and gdp as well as between total electricity consumption and employment we also found unidirectional causality running from industrial electricity consumption to employment and no direct causal links between industrial electricity consumption and gdp in addition all these findings were in general not seriously affected by the financial and economic crises of 2008 a significant exception is the causal effect of industrial electricity consumption on employment which was more pronounced after the crisis of 2008

elasticities of electricity demand in urban indian households abstract in the past several electricity demand studies have been published for india based on aggregate macro data at the country or sub national state level since the underlying theory of consumer demand is based on the behaviour of individual agents the use of micro data which reflects individual and household behaviour more closely can shed greater light on the nature of consumer responses in this paper seasonal price and income elasticities of electricity demand in the residential sector of all urban areas of india are estimated for the first time using disaggregate level survey data for about 30 000 households three electricity demand functions have been econometrically estimated using monthly data for the winter monsoon and summer season in order to understand the extent to which factors like income prices household size and other household specific characteristics influence variations observed in individual households electricity demand the results show electricity demand is income and price inelastic in all three seasons and that household demographic and geographical variables are significant in determining electricity demand

estimation of residential electricity demand in hong kong under electricity charge subsidies abstract over the past decade the hong kong hk government provided electricity charges subsidies for residential accounts to alleviate the burden of inflation and later the burden of economic downturn in this study we estimate an econometric model of residential electricity demand and test the existence of a stable long run relationship for the period 1980 2016 while accounting for the relief measures set out by the hk government since 2008 empirical results suggest that there exists a long run relationship among residential electricity consumption electricity price income per capita and weather variables temperature or cooling degree days in the absence of electricity charge subsidies the demand is found to be both price and income inelastic on the other hand hk s residential electricity consumers are unresponsive to price and income changes when electricity subsidies are in place following its new carbon reduction plan hk is gradually phasing out coal for electricity generation to replace it mainly with natural gas our results suggest that new residential electricity charge subsidies can lessen the effectiveness of6 climate policies aimed at reducing electricity consumption through increases in the electricity price

analysing households responsiveness towards socio economic determinants of residential electricity consumption in singapore abstract the research of household electricity use is still relatively new for singapore where apart from some government surveys and sparingly available papers not much has been done to understand the underlying socio economic determinants that affect residents energy demand here we seek to quantify price and income elasticities as well as provide reasonable justification for price asymmetry in singapore using a panel approach across dwelling types and geographical areas we find that households do not react much to prices and that price elasticities may decrease as income rises there is also some evidence of price asymmetry with surprising results putting responsiveness towards price decreases larger than price increases this points towards similar behavioural patterns with the rebound effect for household energy efficiency if found present in future studies our findings suggest that there will only be positive responses towards dynamic pricing and higher churn rates if more transparent information is provided on related cost savings when households are exposed to retail choice in the electricity market after full retail competition is introduced in 2018 in addition a large role will have to come from cultivating the young to engage in sustainable practices to achieve energy efficiency targets

short and long run elasticities in us residential electricity demand a co integration approach abstract co integration techniques show promise in the analysis of short and long run effects of economic variables on energy use we use these techniques to develop an error correction model of annual us residential electricity demand we construct equipment stock indices and estimate the model for 1949 1993 our analysis suggests a structural shift in consumption during the 1960s we discuss reasons for this shift report the short and long run elasticities provide forecasts for 1994 1995 and compare the model s forecasts with other published forecasts

output and substitution elasticities of energy and implications for renewable energy expansion in the ecowas region abstract this study estimates output and substitution elasticities of renewable energy and nonrenewable energy for the economic community of west african states ecowas and discusses implications for expanding the former the results show that nonrenewable energy promises greater benefits for ecowas economic transition with output elasticities averaging between 0 052 0 579 and 0 055 to 0 223 for nonrenewable energy and renewable energy respectively overall estimated technological progress is low 0 5 to 2 6 the bulk coming from input efficiency substitution elasticities 0 02 0 94 suggest potential for switching towards renewable energy notwithstanding scale economics and sitting problems inherent in renewable power generation challenge the opportunities for energy substitution a sustainable policy solution therefore appears to be one favoring scaled and efficient electricity generation from fossil energy in the short run with a gradual switch towards renewable power in the long run in general the applied model provides insights that energy efficiency enhances sustainable growth by propelling technological advancement especially when technical change is scale biased and factor augmenting the study also provides insights that impacts of exogenous shocks to inputs are temporary and hence do not jeopardize efforts aimed at scaling output through increased and efficient use of labor capital and energy especially nonrenewable energy

can african countries efficiently build their economies on renewable energy abstract the translog production model is estimated to provide insights on the effectiveness of renewable energy for africa the analysis shows that capital labor renewable energy and nonrenewable energy drive output in african countries with renewable energy being a higher driver of growth than the conventional fossil fuels over the sample period this finding is reflective of the fact that renewable sources like wind hydro and solar account for a greater share of power generation in most african countries output elasticities computed for both energy types reaffirm the results and suggest that eastern and central african countries are more renewable energy dependent than the other three regions in addition technological progress is driven mainly by the efficiency with which various factors and energy inputs are used while africa has great potential of facing out conventional fossil energy the discussion provided in this study suggests that such transition is limited in practice due to issues of scale economics and sitting problems

market efficiency assessment under dual pricing rule for the turkish wholesale electricity market abstract this study analyses the price dynamics of day ahead and real time electricity prices following the implementation of dual pricing legislation in turkey to understand the legislation s impact on arbitrage opportunities and market efficiency the convergence of prices between the day ahead forward and the real time markets analysed in order to determine whether persistent price differences between the two markets exist arbitrage opportunities exist if there is a persistent difference between prices in the day ahead forward and real time market markets are considered to be efficient if it is not possible for market participants to earn an excess profit through exploitation of price differences furthermore we examined how the ex post risk premium changes over time using rolling estimations and find that after the implementation of dual pricing the risk premium increased significantly for day and peak hours where the demand is relatively higher compared to night hours as market participants have more experience regarding the dynamics of the market the difference between real time and day ahead forward prices converges to zero since the dual pricing regime enforce market participants to forecast accurately by punishing the forecast error

electricity demand in tunisia this paper examines the global electricity demand in tunisia as a function of gross domestic product in constant price the degree of urbanization the average annual temperature and the real electricity price per kwh this demand will be examined employing annual data over a period spanning almost thirty one years from 1976 to 2006 a long run relationship between the variables under consideration is determined using the vector autoregressive regression the empirical results suggest that the electricity demand in tunisia is sensitive to its past value any changes in gross domestic product and electricity price the electricity price effects have a negative impact on long run electricity consumption however the gross domestic product and the past value of electricity consumption have a positive effect moreover the causality test reveals a unidirectional relationship between price and electricity consumption our empirical findings are effective to policy makers to maintain the electricity consumption in tunisia by using the appropriate strategy

between the labor process and the state the changing face of factory regimes under advanced capitalism the paper develops the concept of politics of production through a double critique first of recent literature on the organization of work for ignoring the political and ideological regimes in production and second of recent theories of the state for failing to root its interventions in the requirements of capitalist development the paper distinguishes three types of production politics despotic hegemonic and hegemonic despotic the focus is on national variations of hegemonic regimes the empirical basis of the analysis is a comparison of two workshops one in manchester england and the other in chicago with similar work organizations and situated in similar market contexts state supportfor those not employed and state regulation of factory regimes explain the distinctive production politics not only in britain and the united states but also in japan and sweden the different national configurations of state intervention are themselves framed by the combined and uneven development of capitalism on a world scale finally consideration is given to the character of the contemporary period in which there emerges a new form of production politics hegemonic despotism founded on the mobility of capital

estimation of residential electricity demand function in seoul by correction for sample selection bias abstract this paper attempts to estimate the residential electricity demand function in seoul to this end we collected the data from a survey of households in seoul and employed the bivariate model to rectify the undesirable impacts of non response data the results show that the size of family the size of house dummy for having a plasma display panel television dummy for having an air conditioner and the household s income have positive relationships with the residential electricity demand on the other hand electricity price contributes negatively to the residential electricity demand in addition the price and income elasticities were estimated as 0 2463 and 0 0593 respectively implying that residential electricity demand in seoul is price and income inelastic such useful information is expected to help policy makers regulate the residential electricity supply and predict the effect of the price on the residential electricity demand in the future

carbon emissions energy consumption and economic growth an aggregate and disaggregate analysis of the indian economy abstract this study investigates the long and short run relationships among carbon emissions energy consumption and economic growth in india at the aggregated and disaggregated levels during 1971 2014 the autoregressive distributed lag model is employed for the cointegration analyses and the vector error correction model is applied to determine the direction of causality between variables results show that a long run cointegration relationship exists and that the environmental kuznets curve is validated at the aggregated and disaggregated levels furthermore energy total energy gas oil electricity and coal consumption has a positive relationship with carbon emissions and a feedback effect exists between economic growth and carbon emissions thus energy efficient technologies should be used in domestic production to mitigate carbon emissions at the aggregated and disaggregated levels the present study provides policy makers with new directions in drafting comprehensive policies with lasting impacts on the economy energy consumption and environment towards sustainable development

self selection and analyst coverage this paper examines the relation between analysts information about a stock s future prospects and their decisions to issue investment recommendations and earnings forecasts for that stock and the implications of this relation for the observed distribution of recommendations and earnings forecast errors articles in the financial press have long argued that analysts are reluctant to issue unfavorable investment information perhaps because they fear jeopardizing potential investment banking

elasticities of electricity demand in india abstract the paper examines econometric relationship between electricity consumption and variables like income price of electricity and diesel used in for captive power generation to meet the shortages and reliability of power supply from utilities in five major consumer categories in india these categories are residential commercial agriculture small and medium industries and large industries income and price elasticities of electricity consumption are estimated at the national level for these consumers by pooling data across 19 states spread over 9 years 1985 86 1993 94 the results show that electricity consumption in commercial and large industrial sectors are income elastic 1 while residential agricultural and small and medium industries are income inelastic

energy conservation policies growth and trade performance evidence of feedback hypothesis in pakistan this study investigates the relationship between energy consumption and trade openness in pakistan by using the annual time series data for the period of 1973 2011 our main results show i the presence of long run link between energy consumption and trade performance ii positive impact of gross domestic product exports and imports on energy consumption iii bidirectional causal relationship between exports and energy consumption and also be tween imports and energy demand and iv bidirectional causality between gross domestic product and energy consumption points to the presence of feedback hypothesis in pakistan we therefore note that energy conservation policies will reduce the trade performance which in turn leads to the decline in economic growth in pakistan the present study may guide policymakers in formulating a conclusive energy and trade policies for sustainable growth for long span of time

price elasticities policy measures and actual developments in household energy consumption a bottom up analysis for the netherlands in the netherlands it seems likely that the large number of new policy measures in the past decade has influenced the response of households to changing prices to investigate this issue the energy trends in the period 1990 2000 have been simulated with a bottom up model applied earlier for scenario studies and extensive data from surveys for a number of alternative price cases the elasticity values found are explained using the bottom up changes in energy trends one finding is that the specific set of saving options defines for a great part the price response the price effect has been analysed too in combination with the policy measures standards subsidies and energy taxes the simulation results indicate that the elasticity value could be 30 40 higher without these measures

electricity consumption and economic growth evidence from turkey abstract this study investigates the causal relationship between electricity consumption and real gdp in turkey during the period of 1950 2000 both of the series were found to be a stationary process around a structural break by the zivot and andrews test thus two different methodologies have been employed to test the granger non causality the dolado lutkepohl test using the vars in levels and the standard granger causality test using the detrended data both tests have yielded a strong evidence for unidirectional causality running from the electricity consumption to the income this implies that the supply of electricity is vitally important to meet the growing electricity consumption hence to sustain the economic growth in turkey

modelling and forecasting turkish residential electricity demand abstract this research investigates the relationship between turkish residential electricity consumption household total final consumption expenditure and residential electricity prices by applying the structural time series model to annual data over the period from 1960 to 2008 household total final consumption expenditure real energy prices and an underlying energy demand trend are found to be important drivers of turkish residential electricity demand with the estimated short run and the long run total final consumption expenditure elasticities being 0 38 and 1 57 respectively and the estimated short run and long run price elasticities being 0 09 and 0 38 respectively moreover the estimated underlying energy demand trend which as far as is known has not been investigated before for the turkish residential sector should be of some benefit to turkish decision makers in terms of energy planning it provides information about the impact of past policies the influence of technical progress the impacts of changes in consumer behaviour and the effects of changes in economic structure furthermore based on the estimated equation and different forecast assumptions it is predicted that turkish residential electricity demand will be somewhere between 48 and 80 twh by 2020 compared to 40 twh in 2008

household electricity and gas consumption for heating homes energy consumption has been drastically changed because of energy source depletion price fluctuations development and penetration of alternative energy sources and government policies household energy sources are interrelated and energy price and household characteristics such as income level and dwelling size affect the usage to supply energy consistently and achieve a balance between production and consumption stakeholders must understand consumer energy consumption behavior therefore this study identifies household heating energy usage patterns and the substitutive and or complementary relationships between electricity and gas based on a multiple discrete continuous extreme value model household utility structure is identified from data on gas heating usage results show greater utility and the smallest satiation values for gas boilers than for electric heaters and electric heating beds the effects of consumer socioeconomic and environmental characteristics on the choice of heating energy sources were analyzed also for further comparison the respondents were split into high and low categories for income heating degree days dwelling size and gas usage gas was found to be the most economical heating choice for households

residential electricity consumption in seattle abstract recent empirical research for different regions of the united states indicates that residential electricity may be an inferior good whose consumption is negatively correlated with income that is a provocative result that runs counter to what many earlier econometric studies indicate given that it makes sense to examine how electricity consumption behaves in different regional service areas even if residential electricity is an inferior good whose usage declines as income rises there is no guarantee that this will be the case across all service areas this study examines residential electricity consumption for seattle washington the largest metropolitan economy in the northwestern region of the united states results from a dynamic error correction modeling approach indicate that residential electricity consumption reacts in statistically significant manners to changes in real price real income and cold weather in the short run residential electricity is a normal good in this metropolitan economy in the long run residential electricity appears to be an inferior good in seattle all else equal whenever real per capita income growth exceeds 1 2 per capita residential electricity usage declines in seattle

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

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

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

literature survey on the relationships between energy environment and economic growth abstract the aim of this study is to exhibit an exhaustive survey which is related to the great flight of the literature of energy environment growth nexus at the individual and regional scale studies covering the period from 1978 to 2014 the survey takes into consideration the sample country region etc periods covering econometric strategies and conclusions our survey is based on the causality direction among i the energy use variables electricity nuclear renewable and non renewable and output growth ii between economic growth and environment and between the three variables at the same time globally these surveys provide paradoxical and not conclusive results which energy consumption can boost economic growth through the productivity enhancement and it can boost also the environmental damages through the enhancement of pollutant emissions our survey sheds more the lights on the energy environment growth literature by giving an extensive listing 1978 2014 of these causal linkages among the energy use variables environment and economic growth for both individual and collective cases there is a unanimous consensus about the importance of dealing with such dynamic relationship which is seems to be a cornerstone element in setting any ambition strategies energy ecological and economics

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

residential electricity demand in taiwan this paper examines the residential demand for electricity in taiwan as a function of household disposable income population growth the price of electricity and the degree of urbanization short and long term effects are separated through the use of an error correction model in the long run the income elasticity is unit elastic the own price effect is negative and inelastic in an error correction framework the short run income and price effects are small and less than the long run effects cooling degree day effects have a positive impact on short run consumption we have used a proxy variable urbanization to capture economic development characteristics and changes in electricity using capital stocks not explained by income the variable provides significant explanatory power to the model both in the short and long run we interpret it as controlling for economic development factors not captured by the pure income effect and we think it holds promise for explaining residential electricity consumption in other developing countries

an empirical analysis of electricity consumption in cyprus abstract the paper presents the first empirical analysis of electricity consumption in cyprus using annual data from 1960 to 2004 we have examined electricity use in the residential and the services sectors which are the fastest growing electricity consumers in the island and its interaction with income prices and the weather the analysis was performed with the aid of time series analysis techniques such as unit root tests with and without a structural break in levels cointegration tests vector error correction models granger causality tests and impulse response functions results show long term elasticities of electricity use above unity for income and of the order of 0 3 to 0 4 for prices in the short term electricity consumption is rather inelastic mostly affected by weather fluctuations granger causality tests confirm exogeneity of electricity prices and bidirectional causality between residential electricity consumption and private income the commercial sector is less elastic and reverts faster to equilibrium than the residential sector despite the relatively small sample size results reported here are quite robust and can be used for forecasts and policy analyses

residential electricity consumption in portugal findings from top down and bottom up models an econometric study of the portuguese residential electricity consumption is presented with a focus on the influence of dwelling characteristics on consumption the relationship between the dwelling and household characteristics on per capita residential electricity consumption is estimated at two different scales involving two distinct databases the first includes data at the municipality level for 2001 the second is the most recent portuguese consumer expenditure survey that was collected in 2005 and 2006 the results of the analysis at both scales are consistent and indicate that household and dwelling characteristics have a significant influence on residential electricity consumption our results show that in portugal the direct effect of income on electricity consumption is low and becomes smaller when more relevant control variables are included in the analysis future demand of electricity in portugal will be significantly influenced by trends in socioeconomic factors as well as changes in the building stock these trends should be taken in consideration in the formulation of policy measures to reduce electricity consumption

a temporal analysis of earnings surprises profits versus losses i show that median earnings surprise has shifted rightward from small negative miss analyst estimates by a small amount to zero meet analyst estimates exactly to small positive beat analyst estimates by a small amount during the 16 years 1984 to 1999 i show that a rightward temporal shift in median surprise from negative to positive describes earnings but neither profits nor losses median profit surprise shifts within the positive quadrant from zero to one cent per share median loss surprise shifts within the negative quadrant from extreme negative about 33 cents per share to zero i show that the median surprise for profits exceeds that for losses in every year i document significant positive temporal trends in both meet and beat analyst estimates for both profits and losses but i find a greater frequency of profits that either meet or beat analyst estimates in every year i find a significant positive temporal trend in positive profits that are a little bit of good news and a significant negative temporal trend in managers who report losses that are an extreme amount of bad news my results are robust to the four internal validity threats i consider namely temporal changes in 1 analyst forecast accuracy 2 the mix of earnings of one sign preceded by earnings of another sign four quarters ago 3 the timeliness of the most recent analyst forecast and 4 the i b e s definition of actual earnings i find that managers of growth firms are relatively more likely than managers of value firms to report good news profits i show that when they do report positive profit surprises managers of growth firms are more likely to report a little bit of good news in every year

retracted relationship incentives and the optimistic pessimistic pattern in analysts forecasts we examine whether analysts incentives to maintain good relationships with management contribute to the optimistic pessimistic within period time trend in analysts forecasts in our experiments 81 experienced sell side analysts from two brokerage firms predict earnings based on historical information and management guidance analysts forecasts exhibit an optimistic pessimistic pattern across the two timing conditions early and late in the quarter and the effect is significantly stronger when the analysts have a good relationship with management than when their only incentive is to be accurate debriefing results indicate that analysts are aware of this pattern of forecasts and believe that this benefits their future relationships with management and with brokerage clients the analysts most frequently cite favored conference call participation and information access when describing benefits from maintaining good relationships with management our results suggest the following the optimistic pessimistic pattern in forecasts is in part a conscious response to relationship incentives information access is perceived to be a major benefit of management relationships and recent regulatory changes may have lessened but have not eliminated this conflict of interest source

estimating residential demand for electricity in the united states 1965 2006 abstract this paper examines the residential demand for electricity in the us economy as a function of the per capita income the price of electricity the price of oil for heating purposes the weather conditions and the stock of occupied housing over the period 1965 2006 this paper has two novelties first the occupied stock of houses as a proxy for the stock of electrical appliances and second the identification of a possible equilibrium relationship among the variables is ascertained through the recently advanced ardl approach to cointegration our empirical findings give support to a stable long run relationship implying also short run and long run elasticities whose size and sign are comparable to other similar studies

dynamics of final sectoral energy demand and aggregate energy intensity this paper proposes a regional and sectoral model of global final energy demand for the main end use sectors of consumption industrial commercial and public services residential and road transportation per capita demand is expressed as an s shaped function of per capita income other variables intervene as well like energy prices temperatures and technological trends this model is applied on a panel of 101 countries and 3 aggregates covering the whole world and it explains fairly well past variations in sectoral final consumption since the beginning of the 2000s further the model is used to analyze the dynamics of final energy demand by sector and in total the main conclusion concerns the pattern of change for aggregate energy intensity the simulations performed show that there is no a priori reason for it to exhibit a bell shape as reported in the literature depending on initial conditions the weight of basic needs in total consumption and the availability of modern commercial energy resources various forms might emerge

analysts reactions to earnings preannouncement strategies preannouncements of earnings tend to overstate negative or understate positive news which decreases the chance of a negative surprise when actual earnings is announced we conduct an experiment to investigate how experienced sell side analysts earnings forecasts are affected by preannouncements that either understate accurately state or overstate the magnitude of positive or negative total earnings news holding total earnings news constant we find that firms with negative positive total news receive the highest post earnings announcement forecasts of future earnings when the earlier preannouncement overstates understates the magnitude of the news these forecasts are consistent with the analysts perceptions about the firms future prospects but not their perceptions of management while analysts expect preannouncements to be lower than actual earnings they do not adjust their forecasts for these beliefs these insights into analysts responses have implications both for managers and analysts

the electricity consumption and gdp nexus for the fiji islands fiji is a small open island economy dependent on energy for its growth and development hence the relationship between energy consumption and economic growth is crucial for fiji s development in this paper we investigate the nexus between electricity consumption and economic growth for fiji within a multivariate framework through including the labour force variable we use the bounds testing approach to cointegration and find that electricity consumption gdp and labour force are only cointegrated when gdp is the endogenous variable we use the granger causality f test and find that in the long run causality runs from electricity consumption and labour force to gdp implying that fiji is an energy dependent country and thus energy conservation policies will have an adverse effect on fiji s economic growth

energy consumption and gdp in turkey is there a co integration relationship energy consumption and gdp are expected to grow by 5 9 and 7 annually until 2025 in turkey this paper tries to unfold the linkage between energy consumption and gdp by undertaking a co integration analysis for turkey with annual data over the period 1970 2003 the analysis shows that energy consumption and gdp are co integrated this means that there is a possibly bi directional causality relationship between the two we establish that there is a unidirectional causality running from gdp to energy consumption indicating that energy saving would not harm economic growth in turkey in addition we find that energy consumption keeps on growing as long as the economy grows in turkey

the demand for electricity in israel quarterly data for israel are used to compare and contrast three dynamic econometric methodologies for estimating the demand for electricity by households and industrial companies these are the dynamic regression model and two approaches to cointegration ols and maximum likelihood since we find evidence of seasonal unit roots in the data we also test for seasonal cointegration we find that the scale elasticities are similar in all three approaches but the ols price elasticities are considerably lower moreover ols suggests non cointegration the paper concludes by stochastically simulating the drms to calculate upside risk in electricity demand

the residential demand for electricity in australia an application of the bounds testing approach to cointegration this paper reports estimates of the long and short run elasticities of residential demand for electricity in australia using the bounds testing procedure to cointegration within an autoregressive distributive lag framework in the long run we find that income and own price are the most important determinants of residential electricity demand while temperature is significant some of the time and gas prices are insignificant our estimates of long run income elasticity and price elasticity of demand are consistent with previous studies although they are towards the lower end of existing estimates as expected the short run elasticities are much smaller than the long run elasticities and the coefficients on the error correction coefficients are small consistent with the fact that in the short run energy appliances are fixed

a literature survey on energy growth nexus abstract this paper provides a survey of the recent progress in the literature of energy consumption economic growth and electricity consumption economic growth causality nexus the survey highlights that most empirical studies focus on either testing the role of energy electricity in stimulating economic growth or examining the direction of causality between these two variables although the positive role of energy on growth has become a stylized fact there are some methodological reservations about the results from these empirical studies a general observation from these studies is that the literature produced conflicting results and there is no consensus neither on the existence nor on the direction of causality between energy consumption electricity consumption and economic growth as a policy implication to avoid from conflicting and unreliable results the authors may use the autoregressive distributed lags bounds test two regime threshold co integration models panel data approach and multivariate models including new variables such as real gross fixed capital formation labor force carbon dioxide emissions population exchange rates interest rates etc thus the authors should focus more on the new approaches and perspectives rather than by employing usual methods based on a set of common variables for different countries and different intervals of time

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