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

cost push impact of taxing carbon in china a price transmission perspective abstract this paper aims to provide a comprehensive look at the potential price effects of a carbon tax at the sectoral level in chinese economy from a production perspective the sectors subjected to the levy are discussed based on sectoral linkage characteristics and then the tax induced repercussions of output prices are simulated using an extended i o price model the results based on the chinese economy for the year 2012 show that levying a carbon tax on sectors with above average co2 emission linkages and non significant production linkages will increase their output prices by an average of 1 93 while induce relatively slight price increases in the encouraged group 0 30 and the other group 0 34 the household is the least affected sector 0 28 in the economy this means that an appropriate tax design tends to shift intermediate inputs and expenditure toward less co2 intensive goods and services by its uneven cost push impacts on production sectors and the entire economy will ultimately get affected by establishing techniques for policy evaluation our analysis highlights the value of linkage analysis in the design of a carbon tax and brings more clarity to price transmission after the imposition of a carbon tax in the economy consequently the indirect effect of carbon tax on household can be better understood

estimates of inter fuel substitution possibilities in chinese chemical industry abstract the chemical sector is a key driver of china s remarkable growth record and accounts for about 10 of the country s gdp this has made the industry energy intensive and consequently a major contributor to greenhouse gas emissions ghg and other pollutants this study has attempted to investigate the potential for inter fuel substitution between coal oil natural gas and electricity in chinese chemical sector by employing a translog production and cost function ridge regression procedure was adopted to estimate the parameters of the function estimation results show that all energy inputs are substitutes in addition the study produces evidence that the significant role of coal in the chinese chemical fuel mix converges over time albeit slowly these results suggest that price based policies coupled with capital subsidy programs can be adopted to redirect technology use towards cleaner energy sources like electricity and natural gas hence retaining the ability to fuel the chemical sector while also mitigating ghg emissions notwithstanding one must understand that the extent to which substituting electricity for coal will be effective depends on the extent to which coal or oil is used in generating electricity the findings of this study provide general insights and underscore the importance of chinese government policies that focus on installed capacity of renewable electricity energy intensity targets as well as merger of enterprises

experimental comparison of impact of auction format on carbon allowance market abstract carbon allowances auctions are a good way to achieve the carbon allowance allocations under international agreements to address global climate change based on an economic experiment this paper compares three possible carbon allowance auction formats uniform price auction discriminatory price auction and english clock auction with heterogeneous bidders coal power plants and gas power plants from four perspectives carbon price auction efficiency demand withholding and fluctuations in power supplies possibilities of collusion among bidders and impacts of allowance banking and penalty price on bidders behaviors under different auction formats are also examined the results show that 1 when there are relatively more bidders and there are no obvious communications between them despite there being some tacit collusion efficiency of english clock auction is greater than the other two formats 2 when there are relatively fewer bidders and there are obvious communications between them explicit collusions are observed under english clock auction in this case discriminatory price auction helps prevent collusion to some extents 3 in the banking scenario more speculations are observed while penalty price exacerbates price volatility

welfare specifications and optimal control of climate change an application of fund the sensitivity of the optimal control of carbon dioxide emissions to the specification of the social welfare function is systematically explored using the fund model increasing risk aversion emphasises climate change damages relative to emission reduction costs but at the same time increases the discount rate of consumption without international co operation the discount rate effect dominates so that optimal control decreases with increasing risk aversion with international co operation optimal control first increases then decreases with increasing risk aversion since climate change falls heaviest on the poor optimal control increases with increasing inequity aversion full fledged intergenerational welfare functions on the one hand emphasise climate change damages but on the other hand place more weight on current poorer generations in fund the two tendencies almost cancel

a real options valuation of chinese wind energy technologies for power generation do benefits from the feed in tariffs outweigh costs abstract in order to assess the viability of wind energy projects in china this paper takes a real options approach by accounting for flexibility over deployment of the technology in response to a stochastic non renewable energy cost the difference between the latter and the r d enhanced cost of renewable energy operation may be thought of as a benefit from using wind on the other hand the chinese government provides feed in tariffs to encourage further adoption of wind which should be included as a cost this work thus shows that there is substantial options value to china s wind energy program which is bolstered if the cost of carbon dioxide emissions is internalized moreover by varying the rate of feed in tariffs the model may be used to show plausible ranges for the feed in tariffs which could be a useful policy insight furthermore the study hypothesizes that with the likelihood of renewable energy to replace non renewable energy wind power in china can potentially reduce co2 emissions by approximately 6 4 by 2020 comparing to the 2005 level and highlights the significant role of wind power in china s emission targets and energy security this is a relevant paper especially given the importance of a sustainable energy transition for china more generally using the real options approach from a policy perspective could provide insights about the viability of renewable energy programs and robustness of feed in tariffs rates

the toxic intensity of industrial production global patterns trends and trade policy this paper exploits a newly developed data set to investigate recent changes in the international distribution of industrial pollution in particular the authors examine three issues 1 the relationship between the toxic intensity of industrial production and the level of economic development 2 the impact of oecd environmental regulation on global changes in toxic intensity and 3 the relationship between trade policy and the toxic intensity of industrial production in ldc s 10 refs

what should we expect from innovation a model based assessment of the environmental and mitigation cost implications of climate related r d abstract this paper addresses two basic issues related to technological innovation and climate stabilization objectives can innovation policies be effective in stabilizing climate to what extent can innovation policies complement carbon pricing taxes or permit trading and improve the economic efficiency of a mitigation policy package to answer these questions we use an integrated assessment model with multiple externalities and an endogenous representation of the technical progress in the energy sector we evaluate a range of innovation policies both as stand alone and in combination with other mitigation policies our analysis indicates that innovation policies alone are unlikely to stabilize global concentration and temperature as for the benefits of combining climate and innovation policies we find efficiency gains of 10 6 usd trillions in net present value terms for a stringent climate policy and 30 3 usd trillions for a milder one however such gains are reduced when more plausible sub optimal global innovation policy arrangements are considered

carbon tax simulations using a household demand model abstract the main objective of this paper is to analyse consumer response and welfare effects due to changes in energy or environmental policy to achieve this objective we formulate and estimate an econometric model for non durable consumer demand in sweden that utilises micro and macro data in the simulations we consider two revenue neutral scenarios that both imply a doubling of the co2 tax one that returns the revenues in the form of a lower vat and one that subsidise public transport one conclusion from the simulations is that the co2 tax has regional distribution effects in the sense that household living in sparsely populated areas carry a larger share of the tax burden

is inequality harmful for growth comment endogenous growth models have reignited interest in institutional and path dependencies in the economic growth process one reason for the interest in endogenous growth models is that they may explain why countries consistently grow at different rates in this vein it has been recently proposed that greater economic inequality reduces future economic growth an important paper in this literature is by torsten persson and guido tabellini 1994 who will be referred to as pt pt s model shows why it is reasonable to expect a negative relationship between inequality and future economic growth moreover their empirical evidence is consistent with their contention if pt s findings are robust to other data sets there would be important policy implications for example they imply that policy makers should not only be concerned with the distributional implications of government policies for political and social reasons but also because income distribution has long run effects on economic growth this indicates that greater u s income inequality since the early 1970 s may have resulted in lower subsequent economic growth however pt s results are somewhat fragile to various specifications suggesting that they should be replicated with different data sets and over different time periods pt p 617 with these implications in mind this study employs data from a panel of u s states to further explore the relationship between economic growth and income inequality in what follows section i summarizes pt s study and discusses how this comment extends their findings the empirical implementation and results in section ii directly examine the link between overall income inequality and growth section iii expands the analysis to alternative measures of income distribution and government policy one emphasis in section iii is the distinction between how the overall income distribution especially at the tails influences economic growth from how the relative well being of the median voter affects economic growth section iv provides some concluding discussion

multiple measurements of u s income inequality using 1980 state census data the gini ratio theil index coefficient of variation atkinson measure four values and nelson index as separate measurements of income inequality are regressed with nineteen ses variables traditionally found significant with gini in past research the standard deviation of educational attainment is dominant among all independent variables as the strongest predictor of inequality mean family income dominant in prior research is a distant second in predictiveness more diversity than commonality is evident among the nineteen ses variables as they predict income inequality measured by the eight different techniques copyright 1988 by mit press

conditioning the return generating process on firm specific events a discussion of event study methods empirical investigations into the codetermination of security prices and eco nomic events are called event studies there are several ways of estimating the codetermination of interest since fama fisher jensen and roll 8 it has been general practice to first translate variables into rates of return then net out gen eral market movements and finally examine the relationship between residual returns and events the methodology in all of its variants fails under the rubric of 4 residual analysis empirical methods used in residual analysis deviate from the structure and terminology generally found in classical econometrics while this is not a criticism of residual analysis it results in a communication problem that is more than simply pedantic in nature a broad body of econometric literature dealing with parameter estimation statistical inference and hypothesis testing often goes untapped by empiricists in finance who within internally consistent sets of as sumptions have created a separate body of statistical methods in this paper a union of the two disciplines is advocated to provide a forum for comparing and contrasting alternative empirical methods the event study problem is broken down into three phases the parameterization of informa tion arrival applicable to the problem an examination ofthe relationship between parameters in the information arrival process and the estimates resulting from alternative estimation methods and aggregation across firms experiencing simi

the social cost of carbon and its policy implications the shadow price or social cost of carbon is an important indicator of the global incremental damage done by emitting greenhouse gases today cost benefit analysis would set the optimal amount of greenhouse gas emission reduction at the point where this social cost just equals the incremental cost of controlling emissions the higher the value for the social cost of carbon the more control is warranted this comparison assumes that cost benefit analysis is the correct way of determining climate change policy and many believe this is not the case because of the very long term irreversible and potentially catastrophic nature of global warming but in the short run at least a comparison of cost and benefits is required and in any event all decisions imply costs and benefits but what is the right figure for the social cost of carbon this paper reviews the uk government s assessment of the cost and concludes that it has been set far too high because of a misreading of the integrated assessment models used to balance costs and benefits moreover adoption of the uk government s shadow price would have formidable implications for energy policy in the uk and for policies on afforestation copyright 2003 oxford university press

carbon pricing and the diffusion of renewable power generation in eastern europe a linear programming approach the purpose of this paper is to analyze the costs for reducing co2 emissions in the power generating sectors in croatia the european part of russia macedonia serbia and the ukraine in 2020 by using a linear programming model the model takes into account the impact of technology learning and is based on the underlying assumptions of the so called rains model frequently used to assess the potential and the costs for reducing air pollution in europe the results based on an exogenously given 15 percent reduction target for co2 emissions show that the marginal cost for switching from a carbon intense fuel to either a low carbon or to a renewable energy source differs significantly among the countries the marginal costs range from 4 to 90 per ton co2 and are mainly due to country differences in the availability of renewables existing technologies and costs the results also indicate that although it is clear that the eastern european countries are not homogeneous in terms of co2 abatement potential and costs no general conclusions can be made of the region this may have important implications for future ji cdm activities for instance risk factors such as policy uncertainty and institutional obstacles may become crucial in determining the future allocation of ji cdm projects across the region

carbon prices and ccs investment a comparative study between the european union and china abstract carbon capture and storage is considered as a key option for climate change mitigation policy makers and investors need to know when ccs becomes economically attractive integrating ccs in a power plant adds significant costs which can be offset by a sufficient co 2 price however most markets have failed currently the weak carbon price threatens ccs deployment in the european union eu in china a carbon regulation is appearing and ccs encounters a rising interest this study investigates two questions how much is the extra cost of a ccs plant in the eu in comparison with china second what is the co 2 price beyond which ccs plants become more profitable than reference plants in the eu and in china to address these issues i conducted a literature review on public studies about ccs costs to objectively assess the profitability of ccs plants i constructed a net present value model to calculate the levelised cost of electricity and the breakeven co 2 price ccs plants become the most profitable plant type beyond 115 tco 2 in the eu vs 45 tco 2 in china offshore transport and storage costs i advise on the optimal plant type choice depending on the co 2 price in both countries

who pays for industrial pollution abatement the distributional impact of industrial pollution abatement is measured for the years 1973 and 1977 the findings indicate that in 1977 1 09 of income or 0 510 of personal consumption expenditures of the lowest income class paid indirectly for abatement costs implicit in purchased goods for the highest income class the corresponding figures were 0 218 and 0 423 respectively in addition abatement costs per dollar of output are presented for representative industries

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

options for mitigating the adverse effects of fossil fuel subsidies removal in ghana abstract conventional wisdom holds that without environmental benefits and revenue recycling fossil fuel subsidies removal would lead to welfare losses first this study tests the usefulness of general equilibrium theory for validating these claims and draws similar conclusion subsequently the model is readjusted to reflect simulation with two non traditional policy options this time the results suggest that removing subsidies on fossil fuels would create opportunities provided that such is done in tandem with complementary policies in particular we show that a mix of agricultural productivity improvement and a reduction in trade transaction costs at 15 in each case would provide benefits for fossil fuel subsidies removal in ghana these results underscore the need for structural reforms in ghanaian agricultural sector especially those aimed at promoting mechanized agriculture

combining price and quantity controls to mitigate global climate change abstract uncertainty about compliance costs causes otherwise equivalent price and quantity controls to behave differently and leads to divergent welfare consequences although most of the debate on global climate change policy has focused on quantity controls due to their political appeal this paper argues that price controls are more efficient simulations based on a stochastic computable general equilibrium model indicate that the expected welfare gain from the optimal price policy is five times higher than the expected gain from the optimal quantity policy an alternative hybrid policy combines both the political appeal of quantity controls with the efficiency of prices using an initial distribution of tradeable permits to set a quantitative target but allowing additional permits to be purchased at a fixed trigger price even sub optimal hybrid policies offer dramatic efficiency improvements over otherwise standard quantity controls for example a 50 trigger price per ton of carbon converts the 3 trillion expected loss associated with a simple 1990 emission target to a 150 billion gain these results suggest that a hybrid policy is an attractive alternative to either a pure price or quantity system

after kyoto alternative mechanisms to control global warming after more than a decade of negotiations and planning under the framework convention on climate change fccc the first binding international agreement to control the emissions of greenhouse gases has come into effect in the kyoto protocol the first budget period of 2008 2012 is at hand moreover the scientific evidence on greenhouse warming strengthens steadily as observational evidence of warming accumulates the institutional framework of the protocol has taken hold solidly in the european union s emissions trading scheme ets which covers almost half of europe s carbon dioxide emissions notwithstanding this apparent success the kyoto protocol is widely seen as somewhere between troubled and terminal early troubles came with the failure to include the major developing countries along with lack of an agreedupon mechanism to include new countries and extend the agreement to new periods the major blow came when the united states withdrew from the treaty in 2001 by 2002 the protocol covered only 30 percent of global emissions while the hard enforcement mechanism in the ets accounts for about 8 percent of global emissions even if the current protocol is extended models indicate that it will have little impact on global temperature change unless there is a dramatic breakthrough or a new design the protocol threatens to be seen as a monument to institutional overreach nations are now beginning to consider the structure of climate change policies for the period after 2008 to 2012 some countries states cities companies and even universities are adopting their own climate change policies are there in fact alternatives to the scheme of tradable emissions permits embodied in the protocol the fact is that alternative approaches have not had a serious hearing among natural scientists or among policymakers what are some alternatives for global public goods there are three potential approaches command and control regulation quantity oriented market approaches and taxor price based regimes of these only the tradable quantity and the price like regimes have any hope of being reasonably efficient under a tradable quantity approach an agreement proceeds by setting limits on emissions by different countries the limits are partially or wholly transferable among countries this is the approach taken under the kyoto protocol this approach has very limited international experience under existing protocols such as the cfc chlorofluorocarbon mechanisms and somewhat broader experience under national trading regimes such as the u s sulfur dioxide regime a radically different approach is to use harmonized prices fees or taxes as a method of coordinating policies among countries this approach has no international experience in the environmental area although it has modest experience nationally in such areas as the u s tax on ozone depleting chemicals on the other hand the use of harmonized price type measures has extensive international experience in fiscal and trade policies such as with the harmonization of taxes in the european union and harmonized tariffs in international trade these thoughts on the structure of international agreements to control global warming should not be regarded as negotiating strategies

are co2 taxes regressive evidence from the danish experience abstract denmark today carries one of the heaviest environmental tax burdens in the world bringing in around 10 of public revenues while evaluations have shown that the danish co 2 and other environmental taxes work as an effective measure to reduce emissions a considerable barrier to increased use of these instruments today seems to be a widespread perception of their socially adverse effects in this article it is demonstrated that co 2 taxes imposed on energy consumption in households as well as in industry do in fact tend to be regressive and therefore have undesirable distributional effects this holds especially for taxes imposed directly on households to analyze this we apply national consumer survey statistics in combination with input output tables

optimal emission taxes for full internalization of environmental externalities abstract the present study proposes a set of optimal emissions fees that could be used to reduce the damages caused by industrial pollution the approach we use allows for the setting of pollution taxes at their economically appropriate level in particular tax rates are computed for china india and 19 sub saharan african countries all other world regions are grouped according to income level such as low income lower middle income upper middle income and high income economies our results show that constructed optimal pollution taxes range as high as 2 9 per 1 dollar of output for heavy manufacturing in the high income countries and as low as 0 01 in the service sectors of the low income countries these results show that a full internalization of the damages in each sector calls for raising the tax rates in some sectors and lowering them in others

endogenous technological change in climate change modelling this article investigates the impact on optimal co2 abatement and carbon tax levels of introducing endogenous technological change in a macroeconomic model of climate change we analyse technological change as a function of cumulative capacity as incorporated recently in energy systems models our calculations confirm that including endogenous innovation implies earlier emission reduction to meet atmospheric carbon concentration constraints however the effect is stronger than suggested in the literature moreover the development of non fossil energy technologies constitutes the most important opportunity for emission reductions optimal carbon tax levels reducing fossil energy use are lower than usually advocated

market consistent modeling for cap and trade schemes and application to option pricing in this paper we refer to the requirement for industrialized countries to reach a domestic target for greenhouse emissions as ratified in the kyoto protocol and propose a market consistent model of futures price dynamics for cap and trade schemes designed in the spirit of the european union emissions trading scheme eu ets historical price dynamics for the eu ets suggest that both european emission allowance eua and certified emission reduction cer certificates generated by a nondomestic offset mechanism are significantly related we use an equilibrium framework to demonstrate that compliance regulation singles out special price dynamics based on this result we propose an arbitrage free model and apply it to the pricing of spread options between euas and cers

does improved environmental quality prevent a growing economy abstract a major concern for sustainable development is how countries can lower pollution while avoiding adverse output and energy shocks since economic activities change with time we develop a dynamic applied equilibrium model to study the dynamics of co2 emissions and evaluate how the pursuit of environmental policy objectives can influence output and productivity in a surrogate country in transition under an optimal environmental policy which ensures mitigation between 38 and 50 we show that productivity projected towards the year 2075 increases slightly from between 3 8 and 6 2 to between 5 7 and 7 6 respectively the required carbon tax begins from 5 29 ton in 2020 and grows on average by 3 5 reaching up to 35 83 per ton carbon towards the year 2075 even though these tax rates ensure huge benefits for mitigation they represent marginal productivity growth and substantial output and consumption costs in other words improved environmental quality presents opportunities for multifactor productivity mfp but this productivity improvement is too marginal to offset the compliance costs of the carbon tax thereby causing output to decline hence to ensure maximum economic dividend from carbon pricing especially in transitional economies measures are required to improve the innovation benefits of carbon taxes towards levels that offset the compliance costs of environmental regulations otherwise caution should be taken by developing countries in their environmental policy designs especially when boosting consumption and economic growth is a major priority

impact of cap and trade policies for reducing greenhouse gas emissions on u s households abstract proposals being considered by the u s congress would establish a cap and trade system to cut greenhouse gas ghg emissions approximately 2 annually through 2050 past cap and trade policies for other pollutants have distributed allowances free to the regulated companies leaving consumers uncompensated for passed through costs needed to achieve the required reductions social equity concerns were not a major issue because the total costs were relatively small however americans currently spend about 1 trillion year on energy directly and indirectly via the goods and services they consume if a cap on carbon emissions results in significant increases in energy prices social equity concerns could quickly dominate the debate over climate policy this paper confirms earlier studies that a traditional cap and trade policy is regressive and would cause the cost of reducing ghg emissions to fall disproportionately on low income households this paper explores ways to ameliorate those effects using highly disaggregated data available on consumer expenditures and energy input output analyses of the u s economy emissions are estimated based on direct and embodied energy use at the household level social equity concerns are taken into account and the consequences of cap and trade policies are assessed by quantifying the extent to which the expenditure patterns of the poor are significantly more energy intensive than those of the rich

carbon pricing versus emissions trading a supply chain planning perspective abstract carbon pricing taxes and carbon emissions trading are two globally practiced carbon regulatory policy schemes this paper presents an analytical supply chain planning model that can be used to examine the supply chain performance at the tactical operational planning level under these two policy schemes model implementation and analyses are completed using actual data from a company operating in australia where these environmental regulatory policies are practiced numerical results provide important managerial and practical implications and policy insights in particular the results show that there are inflection points where both carbon pricing and trading schemes could influence costs or emissions reductions an erratic nonlinear emissions reduction trend is observed in a carbon pricing scheme as the carbon price increases steadily whereas emissions reduction in a carbon trading scheme follows a relatively linear trend with a nonlinear cost increase overall a carbon trading mechanism although imperfect appears to result in better supply chain performance in terms of emissions generation cost and service level even though a carbon tax may be more worthwhile from an uncertainty perspective as emissions trading costs depend on numerous uncertain market conditions

allocation of co2 emission permits economic incentives for emission reductions in developing countries the economic impacts on developing regions following a global cap and trade system for carbon dioxide are assessed through the use of an energy economy systems model both an equal per capita allocation and a contraction and convergence allocation with convergence of the per capita emissions by 2050 are shown to offer economic incentive for africa india and probably also latin america to accept binding emissions commitments under a 450 ppm carbon dioxide stabilization scenario the gain for latin america is mainly a result of increased export revenues from sales of bio fuels as a result of the climate policy it is on the other hand unlikely that these allocation approaches would offer an economic incentive for china to join the regime because of its high economic growth present higher per capita emissions than india and africa and more costly mitigation options than latin america a more stringent allocation for developing countries such as contraction with convergence of the per capita emissions by the end of this century is estimated to generate reduced net gains or increased net losses for the developing regions though africa is still expected to gain

delving into liberia s energy economy technical change inter factor and inter fuel substitution abstract the industrial energy mix of liberia is dominated by petroleum products this has generated serious environmental problems contributing immensely to co 2 emissions and other pollutants in the country this study has attempted to investigate the potential for inter factor and inter fuel substitution between capital labor petroleum and electricity in liberia by employing a translog production and cost function approach ridge regression procedure has been adopted to estimate the parameters of the function due to multicollinearity in the data estimation results show that all inputs are substitutes these suggest that price based policies coupled with capital subsidy programs can be adopted to redirect technology use towards cleaner energy sources like electricity hence retaining the ability to fuel the economy while also mitigating greenhouse gas ghg emissions substitution between energy and labor and energy and capital implies that removal of price ceilings on energy in liberia would tend to reduce energy use and increase capital and labor intensiveness notwithstanding the study seems to show no evidence of convergence in relative technological progress of the four inputs implying that petroleum will continue to play a dominant role in the energy consumption mix of liberian industry while labor investment will continue to outweigh capital inputs finally the findings of this study provide general insights and underscore the importance of policies that focus on installed capacity of renewable electricity energy intensity targets as well as merger of enterprises

can carbon taxes be progressive abstract most studies have assessed the distributional impact of carbon taxes through their effects on commodity prices alone while ignoring their impact on individual welfare brought about by changes in factor prices yet the remunerations of capital and labor are not affected by these taxes similarly and their shares in earned incomes are not uniform across households this paper provides a comprehensive analysis of the incidence of carbon taxes on inequality by considering simultaneously the commodity and the income channels we propose a decomposition of the change in individual welfare metrics then we develop a general equilibrium model to assess the impact of carbon taxes on factor and commodity prices and subsequently their distributional impact on households using the lorenz and concentration curves and the gini index our results suggest that changes in factor prices and changes in commodity prices especially those of energy commodities have opposing effects on inequality carbon taxes tend to reduce inequality through the changes in factor prices and tend to increase inequality through the changes in commodity prices hence we find a non monotonic u shaped relationship between carbon taxes and inequality our results suggest that the traditional approach of assessing the impact of carbon taxes on inequality through changes in commodity prices alone may be misleading the findings cast light on the desirability of using both channels in the assessment of carbon taxes on inequality

renewable energy technologies as beacon of cleaner production a real options valuation analysis for liberia abstract the importance of energy consumption for growth and development calls for improved decision support for a sustainable energy transition given africa s dependence on fossil fuels the economic and environmental savings from research development and deployment of renewable energy technologies may be substantial although the benefits of renewable energy technologies research development funding may appear to be low assuming immediate deployment the uncertainty in the non renewable energy price and the flexibility over timing makes research development program more appealing this study develops different scenarios in order to quantify benefits provided by research development funding for renewable power generation in liberia by using real options pricing approach to estimate the value of renewable energy technologies while taking into account the uncertainty of fossil fuel prices and learning by doing in renewable energy technologies the optimal solution shows that renewable energy technologies are economically attractive especially when external costs are internalized however annual research development funding is low and should be raised significantly in order to guarantee the highest possible investment incentives with minimal expenditures the study also hypothesizes that with the likelihood of renewable energy to replace non renewable energy renewable power use in liberia can potentially reduce carbon dioxide emissions by approximately 13 9 by 2015 compared to the 2008 levels the key insight provided by the real options analysis in this study is that while renewable energy may have inherent limitations such as seasonality of supply low energy content and capacity factor issues they still hold a significant amount of value which can only be detected when externalities are internalized thus underscoring the need for external costs related policies

taxation of multiple greenhouse gases and the effects on income distribution a case study of the netherlands current economic instruments aimed at climate change mitigation focus on co2 emissions only but the kyoto protocol refers to other greenhouse gases ghg as well as co2 these are ch4 n2o hfcs pfcs and sf6 taxation of multiple greenhouse gases improves the cost effectiveness of climate change mitigation it is not yet clear however what the effect is of multigas taxation on the distribution of the tax burden across income groups this paper examines and compares distributional effects of a co2 tax and a comprehensive tax that covers all six ghg of the kyoto protocol the study concentrates on the netherlands in the year 2000 we established tax rates on the basis of marginal abatement cost curves and the dutch policy target the distributional effects have been determined by means of environmentally extended input output analysis and data on consumer expenditures our results show that taxation of multiple ghg improves not only the cost effectiveness of climate change mitigation but also distributes the tax burden more equally across income groups as compared to a co2 tax these findings are relevant for the debate on the role of non co2 ghg in climate change mitigation

valuing chinese feed in tariffs program for solar power generation a real options analysis newhuadu business school research fund china sustainable energy program g 1305 18257 national social science foundation of china 12zd059 ministry of education 10gbj013

carbon sequestration or abatement the effect of rising carbon prices on the optimal portfolio of greenhouse gas mitigation strategies abstract existing projections of the optimal share of carbon sequestration in an overall portfolio of greenhouse gas mitigation strategies almost all assume the carbon price to be constant over time this paper shows analytically that if the price instead increases over time consistent with projections from integrated assessment models it becomes optimal to delay certain sequestration projects whereas the optimal timing of energy based abatement projects remains unchanged as a result the optimal share of sequestration falls and significantly so calibrating our analytical model we find that a modest 3 rate of price increase results in about a 60 reduction in the optimal sequestration share relative to constant price projections numerical simulations based on predicted carbon price paths from nordhaus rice01 model indicate quantitatively similar reductions under an economically efficient scenario and much larger reductions 80 100 for up to 80 years under a scenario that aims to limit the atmospheric co 2 concentration to double its pre industrial level