co2 emission and economic growth in algeria abstract algeria is one of the most important co 2 emitters among developing countries and the third among african countries it pledged to curb carbon emissions by at least 7 by 2030 however complying with this target may be a difficult task without compromising economic growth the aim of this paper is to analyze the relationship between co 2 emissions and economic growth in algeria taking into account energy use electricity consumption exports and imports the validity of the ekc hypothesis throughout the period from 1970 to 2010 is tested by using the autoregressive distributed lag model extended to introduce the break points results confirm the ekc for algeria nevertheless the turning point is reached for a very high gdp per capita value indicating that economic growth in algeria will continue to increase emissions results also indicate that an increase in energy use and electricity consumption increase co 2 emissions and that exports and imports affect them negatively and positively respectively therefore it is necessary to promote renewable energies and energy efficiency policies regulatory reforms are needed to facilitate foreign investments with which to carry out these policies likewise it may be appropriate to decrease subsides in energy prices to encourage energy efficiency

index decomposition analysis applied to co2 emission studies index decomposition analysis ida was first extended from energy consumption to energy related co2 emission studies in 1991 since then many studies have been reported covering various countries and emission sectors however unlike the case of energy consumption studies a comprehensive literature survey that focuses specifically on emission studies has so far not been reported in this paper we attempt to fill this gap by reviewing 80 papers appearing in peer reviewed journals from 1991 to 2012 in this application area the first part of this paper deals with the developments with regard to the ida approaches used by researchers and the scope and focus of their studies in the second part the empirical results reported in the surveyed studies are analyzed consolidated and presented by emission sector the objective is to reveal the relative contributions of key effects on changes in the aggregate carbon intensity and this is done by emission sector and by country the findings of both parts are useful in understanding the development of ida in the application area of emission study as well as the key drivers of aggregate carbon intensities in the past and their possible future developments

residential bioenergy heating a study of consumer perceptions of improved woodstoves abstract consumers choices play a key role for the development of biomass heating in the residential sector the city of oslo has granted subsidies to households who change to new improved low emission woodstoves the purpose of this study is to expand the knowledge about users experiences and attitudes to residential biomass heating an adapted model of the theory of planned behavior was used to model households inclination to continue using their woodstoves for heating more than 800 questionnaires were collected from households that recently had invested in an improved woodstove the respondents were satisfied with the new woodstoves the respondents also considered themselves competent to use and maintain the stove and few had problems acquiring fuelwood further analyses showed that the intention to continue to use the new woodstove depends on economic benefits heating performance perceived time and effort to operate the stove environmental effects of heating as well as perceived subjective norm the results imply that when marketing a modern technology for bioenergy heating both public authorities and producers should consider issues related to the users perception of subjective norm such as perceived status of using bioenergy or environmental concerns when designing campaigns to promote the use of woodstoves

decomposition analysis of co2 emissions from electricity generation in china abstract electricity generation in china mainly depends on coal and its products which has led to the increase in co2 emissions this paper intends to analyze the current status of co2 emissions from electricity generation in china during the period 1991 2009 and apply the logarithmic mean divisia index lmdi technique to find the nature of the factors influencing the changes in co2 emissions the main results as follows 1 co2 emission from electricity generation has increased from 530 96 mt in 1991 to 2393 02 mt in 2009 following an annual growth rate of 8 72 coal products is the main fuel type for thermal power generation which accounts for more than 90 co2 emissions from electricity generation 2 this paper also presents co2 emissions factor of electricity consumption which help calculate co2 emission from final electricity consumption 3 in china the economic activity effect is the most important contributor to increase co2 emissions from electricity generation but the electricity generation efficiency effect plays the dominant role in decreasing co2 emissions

embodied energy and intensity in china s normal and processing exports and their driving forces 2005 2015 abstract international trade has important impacts on a country s energy consumption this paper first uses the time series 2005 2015 extended input output database to study china s embodied energy and intensity in both normal and processing exports structural decomposition analysis sda is then applied to analyze the driving forces behind the embodiment changes the empirical results show that china s energy embodied in both normal and processing exports first increased in 2005 2008 dropped in 2009 due to the global financial crisis and then rose again after 2009 and finally dropped in 2014 2015 the embodied energy in trade as a percentage of total energy consumption in china was relatively stable before and after the global financial crisis at around 28 over the 2005 2008 period and 22 over the 2009 2015 period the contribution of the aggregate embodied intensity aei of exports to china s aggregate energy intensity dropped from 30 in 2005 to 21 in 2015 among china s trading partners the united states japan and korea together accounted for around half of china s embodied energy and aei in exports in 2005 but their shares dropped to only one third in 2015 energy efficiency improvement played the key role in reducing the embodied energy and intensity in china s exports similar analysis can be applied to other regions and indicators

demand contributors and driving factors of singapore s aggregate carbon intensities abstract singapore is an island city state it lacks conventional energy resources and is alternative energy disadvantaged yet its aggregate carbon intensity given by the ratio of carbon emissions to gdp dropped by 30 from 2005 to 2014 currently it has a relatively low carbon intensity using i o analysis we study singapore s aggregate carbon intensity and the factors contributing to its changes at different levels i e final demand sector and transmission levels it is found that domestic exports accounted for nearly two thirds of singapore s aggregate carbon intensity followed by private consumption and investment at the sectoral level the top three contributors were the petroleum petrochemical and land transport sectors improvements in emission intensity and final demand structure were major factors contributing to reductions in carbon intensity our study contributes to the literature in two aspects methodologically it deals with embodied emission intensity and analyzes its changes from the demand perspective this differs from most studies in the literature from the production perspective empirically the findings and policy implications are unique as they are applicable to a major city with urbanization taking place in many developing countries cites role in emissions and environmental sustainability are growing in importance but not many in depth analyses similar to our study have been reported

economic and climate impacts of reducing china s renewable electricity curtailment a comparison between cge models with alternative nesting structures of electricity abstract to mitigate climate change impacts and achieve low carbon transformation china has accelerated the development of renewable energy which is severely challenged by the curtailment of renewable electricity this study uses a dynamic multi sectoral cge model with alternative nesting structures and substitution elasticities for electricity with different power sources to capture the economic and environmental feasibility of reducing renewable electricity curtailment across all economic sectors in china the reduction of renewable electricity curtailment is simulated during 2021 2030 from the curtailment rates of 2015 2017 we found that the reduction of renewable electricity curtailment would lead to a significant expansion in the output of renewable electricity and a moderate decrease in non renewable electricity production among the renewable electricity wind power has the most significant output gain over 9 with solar power and hydropower outputs rising by over 5 and 1 5 respectively however without the cost neutrality assumption the impacts of reducing electricity curtailment would be largely over estimated with cge models simulated by improved technology the disparity between results from the models with alternative nesting constant elasticity of substitution ces functions for electricity sectors is highly dependent on the difference between their substitution elasticities accompanying the changes in electricity generation the reduction of renewable electricity curtailment would bring multiple green co benefits like significantly reducing co2 and air pollutants emitted from electricity sectors and improvements in real gdp and employment

the lmdi approach to decomposition analysis a practical guide in a recent study ang energy policy 32 2004 compared various index decomposition analysis methods and concluded that the logarithmic mean divisia index method is the preferred method since the literature on the method tends to be either too technical or specific for most potential users this paper provides a practical guide that includes the general formulation process summary tables for easy reference and examples

drivers of stagnating global carbon intensity of electricity and the way forward abstract despite the signing of the paris climate agreement there is still great uncertainty regarding the world s ability to decarbonize and meet the 2 c target in this regard the electricity production sector deserves particular attention the sector has the largest decarbonization potential and its share of the world s co2 emissions from fuel combustion increased from 30 in 1990 to 36 in 2014 to better understand global trends this study analyses the factors influencing changes in the global aggregate carbon intensity aci of electricity a measure of the level of co2 emissions per unit of electricity produced over the last 25 years using multidimensional index decomposition analysis it finds that global aci barely improved since 1990 because of a shift in electricity production from developed to developing countries with higher acis this geographical shift offset consistent improvements to power generation efficiency worldwide and is likely to persist in the future to keep the 2 c target realisable it is imperative to enhance international cooperation to lower the acis of emerging economies and deepen the penetration of renewables which have thus far performed below expectations

carbon emission intensity in electricity production a global analysis we study changes in the aggregate carbon intensity aci for electricity at the global and country levels the aci is defined as the energy related co2 emissions in electricity production divided by the electricity produced it is a performance indicator since a decrease in its value is a desirable outcome from the environmental and climate change viewpoints from 1990 to 2013 the aci computed at the global level decreased only marginally however fairly substantial decreases were observed in many countries this apparent anomaly arises from a geographical shift in global electricity production with countries having a high aci increasingly taking up a larger electricity production share it is found that globally and in most major electricity producing countries reduction in their aci was due mainly to improvements in the thermal efficiency of electricity generation rather than to fuel switching estimates of the above mentioned effects are made using lmdi decomposition analysis our study reveals several challenges in reducing global co2 emissions from the electricity production sector although technically the reduction potential for the sector is known to be great

a multi region structural decomposition analysis of global co2 emission intensity abstract this paper studies changes in global and national co 2 emission intensities using the multi region structural decomposition analysis sda technique emission intensities such as the ratio of co 2 emissions to gdp have lately been widely used to characterize national emission performance meanwhile the impact of international trade has been found to be important in global emission accounting it is therefore important to analyze changes in emission intensities by taking trade into consideration in this study we first propose two sda models one at the global level and the other at the country level to quantify both the domestic and trade related effects on an intensity indicator the models are then used to study changes in global and countries co 2 emission intensities from 2000 to 2009 the results show that sectoral emission efficiency improvement was the main contributor to the slight decrease in global emission intensity during the period while international trade marginally hampered improvement of global emission intensity comparisons of the performance between emerging economies and advanced economies reveal the importance of production structure and final demand structure in emission intensity reduction the policy implications of the findings are presented

analysis of electricity consumption in china 1990 2016 using index decomposition and decoupling approach abstract electricity consumption accounts for a significant portion of final energy consumption in countries worldwide and has a close relationship with economic growth this paper explores the factors influencing electricity consumption in china during 1990 2016 using index decomposition analysis and analyses the decoupling status between economic growth and electricity consumption in addition to the influencing factors these analyses are conducted at both national and sectoral levels the results reveal that 1 the economic activity effect was the main driving force increasing total electricity consumption in china while the energy intensity effect hindered it 2 both diversity and aggregation existed at the sector level the power generation chemicals and non ferrous sectors were the top three contributors to increased electricity consumption 3 the change of electricity consumption caused by gdp growth in china showed three decoupling states during 1990 2016 expansive negative decoupling expansive coupling and weak decoupling in particular the energy intensity effect stimulated the occurrence of decoupling 4 industrial sectors played a significant role in decoupling in china while service sectoral electricity consumption showed expansive coupling with its sectoral gdp in recent years

co2 emissions from electricity generation in seven asia pacific and north american countries a decomposition analysis abstract the logarithmic mean divisia index lmdi method of complete decomposition is used to examine the role of three factors electricity production electricity generation structure and energy intensity of electricity generation affecting the evolution of co2 emissions from electricity generation in seven countries these seven countries together generated 58 of global electricity and they are responsible for more than two thirds of global co2 emissions from electricity generation in 2005 the analysis shows production effect as the major factor responsible for rise in co2 emissions during the period 1990 2005 the generation structure effect also contributed in co2 emissions increase although at a slower rate in contrary the energy intensity effect is responsible for modest reduction in co2 emissions during this period over the 2005 2030 period production effect remains the key factor responsible for increase in emissions and energy intensity effect is responsible for decrease in emissions unlike in the past generation structure effect contributes significant decrease in emissions however the degree of influence of these factors affecting changes in co2 emissions vary from country to country the analysis also shows that there is a potential of efficiency improvement of fossil fuel fired power plants and its associated co benefits among these countries

upgrading or downgrading china s regional carbon emission intensity evolution and its determinants one of china s major national targets is to environmentally upgrade its economy in this paper we define environmental upgrading as lowering the carbon intensity the disparities among china s regions suggest to examine china s carbon emission performance at the regional level for this purpose we use inter regional input output tables for 2002 2007 and 2012 that distinguish processing exports from ordinary exports the regional emission intensities eis show environmental downgrading in the period 2002 2007 and upgrading during 2007 2012 to identify the determinants of the evolution of regional eis we have employed a multiplicative structural decomposition analysis changes in direct emission coefficients and changes in production technology are found to be the major determinants however next to these standard determinants we also evaluate the effects on the changes in regional eis of changes in inter regional trade and changes in inter regional spillovers changing inter regional trade is found to have increased the ei significantly in western and central regions this suggests that more dirty production was shifted from coastal to inland regions our study yields clear policy recommendations for achieving china s transformation to a low carbon economy c 2020 elsevier b v all rights reserved

power markets in transition decarbonization energy efficiency and short term demand response abstract energy efficiency and short term demand response are key issues in the decarbonization of power markets however their interaction and combined impact on market prices as well as on the supply side is yet to be understood we develop a framework to implement short term demand response and investments in energy efficiency in detailed partial equilibrium power market models we quantify our results using the eu regen model for the european power market under an 80 emission reduction target energy efficiency contributes only 11 of carbon emission reductions intermittent renewable energies such as wind and solar power account for the major share of 53 in comparison to a scenario without short term demand response and energy efficiency investments 70 gw gas power is decommissioned immediately and 180 gw less gas capacity is needed in 2050 which underlines the need for immediate action by policy makers to avoid locking the eu power market into an inefficient path

estimating demand under block rates electricity and water many empirical studies of the demand for electricity under declining block tariffs have been conducted but few have produced results consistent with traditional demand theory nordin bell j economics 7 719 21 1976 explains this in part by pointing out that most of those studies failed to take into account the income effects caused by intramarginal price differences the authors show here that nordin s suggestion involves the inappropriate use of ordinal level statistics ols they propose a method by which consistent estimates of the demand parameters can be obtained when a household s rule for selecting a block can be estimated 19 references 1 figure

evaluating the welfare effects of reforming municipal water prices abstract despite the strong criticisms by economists of water utility pricing practices and the presence of well articulated theoretical models of efficient pricing alternatives few empirical studies have documented the magnitude of the efficiency gains from altering water prices the structures of water supply costs and water demands are estimated using data from vancouver canada a simulation program uses these estimated relationships to compute the impact upon a representative water utility s output and deficit and upon aggregate consumer surplus of a move from its current practice to efficient prices simulation results show that a move to seasonally differentiated pricing with an annual charge calculated to recoup the resulting deficit raises aggregate surplus by approximately 4 this result contrasts with recent water pricing studies that found welfare improvements of approximately 1

decomposition of carbon intensity in electricity production technological innovation and structural adjustment in china s power sector abstract china s power generation accounted for 24 of the world s total output ranking first in 2015 as a suitable performance indicator carbon intensity of electricity reflects a variation in the average level of carbon emissions per unit of electricity generated as the largest carbon emitter among various industries power sector is in duty bound to reduce carbon emissions and achieve sustainable development great progress has been made in china s power sector which is reflected by the effects of technological innovation and structural adjustment with logarithm transformation and integral transformation three dimensional decomposition model is proposed to quantitatively measure the changed carbon intensity of electricity due to technological innovation and structural adjustment in the context of three dimensional model the variation of carbon intensity can be decomposed into absolute changes and or relative changes furthermore accumulative decomposition results are obtained by chain linked calculation rules finally the proposed models are implemented in china s power industry to reveal its historical progress during 1980 2014 some important conclusions are also found based on the decomposition results

input output and structural decomposition analysis of singapore s carbon emissions singapore is an island city state it lacks conventional energy resources and is alternative energy disadvantaged in the past decade 2000 2010 its energy related carbon emissions increased from 37 8 to 44 4 million tonnes of co2 this paper analyses the city state s carbon emissions from the demand perspective using the input output i o method and investigate the drivers of emission changes using structural decomposition analysis sda it is the first comprehensive analysis of singapore s emissions using the i o framework the results obtained show that exports accounted for nearly two thirds of its total emissions and growth in its emissions in the last decade was largely export driven emissions increased as export oriented industries and export volume expanded fuel switching and energy efficiency however helped to lower growth in emissions besides exports household related emissions accounted for about a quarter of singapore s total emissions the emissions related to different household groups remained fairly stable as increases in embodied indirect emissions were offset by decreases in direct emissions the high income household group registered the largest increase in direct emissions while the middle income household group registered the largest increase in embodied emissions the policy implications of our findings are discussed

lmdi decomposition approach a guide for implementation since it was first used by researchers to analyze industrial electricity consumption in the early 1980s index decomposition analysis ida has been widely adopted in energy and emission studies lately its use as the analytical component of accounting frameworks for tracking economy wide energy efficiency trends has attracted considerable attention and interest among policy makers the last comprehensive literature review of ida was reported in 2000 which is some years back after giving an update and presenting the key trends in the last 15 years this study focuses on the implementation issues of the logarithmic mean divisia index lmdi decomposition methods in view of their dominance in ida in recent years eight lmdi models are presented and their origin decomposition formulae and strengths and weaknesses are summarized guidelines on the choice among these models are provided to assist users in implementation

energy co2 emissions and value added flows embodied in the international trade of the brics group a comprehensive assessment abstract the brics economies group i e brazil russia india china and south africa has become an important contributor to the growth of the world economy which is increasingly concerned about carbon emissions due to the recent increase in energy use in these countries while the embodied energy use related to emissions of the brics group has been discussed in the literature an integrated analysis of energy carbon footprints and value added flows associated with international trade among the brics group has to date rarely been reported based on an improved multi regional input output model south africa was extracted from the rest of the world in the world input output database wiod to analyze the above mentioned flows embodied in trade within the brics countries as well as between the brics group and other economies the results show that the brics economic entity was a net embodied flows exporter more flows were embodied in intermediate products than in final demand within the brics group compared with other brics economies china which is the largest transit country transferred more embodied flows from russia to other brics countries and drove more embodied flows from major economies including the united states and european countries outside the brics group than those within the brics group however china imported a relatively higher embodied energy and co2 in per unit value added from the brics countries than non brics countries while exporting relative lower embodied energy and co2 per value added to other brics economies than non brics countries the potential policy implications on cleaner development within the brics economies are discussed at the end of this paper

carbon intensity of electricity in asean drivers performance and outlook abstract the association of southeast asian nations asean with its ten member countries has a total population exceeding 600 million its energy related co2 emissions have been growing and in 2013 amounted to 3 6 of total global emissions about 40 of asean s energy related co2 emissions are currently attributable to electricity production in view of this high share we study the co2 emissions of asean s electricity production sector with a focus on the aggregate emission intensity aci given by the level of co2 emissions for each unit of electricity produced drivers of aci are analysed for individual countries and spatial analysis is conducted by comparing factors contributing to differences between the acis of individual countries and that of the asean average arising from these analyses and in light of the current developments it is concluded that drastic actions need to be taken both at the national and regional levels in order to reduce growth in the region s electricity related co2 emissions two key policy issues namely overcoming national circumstances to improve electricity generation mix and improving power generation efficiency are further discussed

how can chile move away from a high carbon economy abstract this paper quantitatively evaluates the performance of chile s co2 emissions between 1991 and 2013 using a complete decomposition technique to examine emissions and their components a decomposition analysis based on log mean divisia index method lmdi i was conducted six decomposition factors were considered carbon intensity effect ci res penetration effect res energy intensity effect ei economy structure effect es income effect yp and population effect p to know how these factors could influence each other in the future the innovative accounting approach iaa was used including forecast error variance decomposition and impulse response functions irfs these two methodologies allow us to identify the drivers of co2 emission changes in the past 1991 2013 test policy measures and learn how these drivers could influence each other in the future to evaluate whether the current measures meet the paris commitments the lmdi analysis results show that the energy intensity factor is the main compensating factor of chile s co2 emissions and the only effect with a clear trend to aid the economy s decoupling iaa and ifrs results react similarly and confirm that carbon intensity reacts to shocks more significantly in the short term the reaction to res has the same and opposite behavior to shocks in es and yp to disappear in the long term

a spatial temporal decomposition approach to performance assessment in energy and emissions abstract there has been growing interest among researchers and policymakers in comparing or benchmarking countries on the basis of their performance in energy consumption or energy related co 2 emissions such studies allow variations among countries to be revealed the contributing factors identified and the scope for improvement better understood at the same time tracking changes or quantifying improvements in energy use or emissions over time in a country have long been a focus area of researchers and policy makers to provide a fuller picture on country performance in a multi country study over time it would be of interest to integrate the above mentioned spatial and temporal analyses in a single analysis framework this paper deals with this issue using the technique of index decomposition analysis a spatial temporal approach is introduced and two application cases are presented to illustrate how the approach can be applied the first analyzes variations and changes in the aggregate co 2 intensity of electricity production for ten countries from 1990 to 2010 and the second deals with variations and changes in the aggregate energy intensity for eight economic regions of china from 2002 to 2012 in addition two different ways of presenting the results are introduced our study shows that the proposed approach can supplement studies which are conducted purely on a spatial or temporal basis

a multi region multi sector decomposition and attribution analysis of aggregate carbon intensity in china from 2000 to 2015 abstract index decomposition analysis ida has been used to analyze driving forces of aggregate carbon intensity aci however previous studies mostly explained changes in aci from either sectoral or regional perspective but rarely looked into driving forces of aci from both sectoral and regional perspectives under a unified and consistent framework to fill the research gap this study proposed a multi region multi sector decomposition and attribution approach to analyze driving forces of aci from both sectoral and regional perspectives the empirical results in china show that the aci declined by 33 from 2000 to 2015 from the sectoral perspective the decline can be mainly attributed to the significant energy efficiency improvement in six high energy intensive industries however the rapid growth in electricity consumption especially in chemicals and iron and steel and the expansion of iron and steel industry during 2000 2005 greatly offset the negative effect from energy efficiency from the regional perspective the aci decline can be primarily due to an extensive improvement in energy efficiency in most regions on the contrary the increasing dependency on coal particularly in shandong inner mongolia and guangdong and the increased share of carbon intensive industries in some provinces such as guangxi and sichuan markedly increased aci based on the results the effectiveness of underlying sectoral and regional level policies and measures implemented for aci reduction in china were evaluated

the impacts of carbon pricing on coastal megacities a cge analysis of singapore abstract pricing carbon is a widely used policy instrument for climate change mitigation quantitative analysis of carbon pricing are mainly conducted at the regional and national level rarely at the city level due to data availability as a representative of coastal megacities that are vulnerable to both climate change and climate policies singapore has announced to impose carbon tax on large direct emitters as a complementary mitigation option to technical measures a city level computable general equilibrium cge model is developed to simulate potential impacts of carbon pricing on the city including paying border carbon adjustment bca on exports or introducing a domestic carbon tax different sector coverages and carbon tax revenue recycling schemes are investigated for domestic carbon tax the simulation results show that a domestic carbon tax is a more cost effective option than paying bca given an identical carbon price at s 10 t co 2 gdp total exports and household consumption would decline less and average abatement cost is much smaller in the carbon tax scenarios compared to the bca scenario in terms of absolute emissions reduction a carbon tax that covers energy manufacturing and land transport sectors would be preferred making emissions around 2 7 lower than 2010 baseline level