a portfolio approach to endogenous growth equilibrium and optimal policy abstract this paper develops a portfolio approach to modeling endogenous growth in continuous time that is especially suitable for addressing fiscal and financial issues in policy design the analysis focuses on the equilibrium relationship between fiscal and financial policy rates of return and wealth allocation we analyze two models the first is based on the arrow romer model with increasing returns and an external effect of capital on labor productivity the second draws on barro s analysis of government spending and endogenous growth in both models we study the equilibrium allocation and discuss the optimal fiscal and financial policy

market segmentation and willingness to pay for green electricity among urban residents in china the case of jiangsu province the objective of this study is to identify market segments and estimate the residents willingness to pay wtp for green electricity green e in china for the large scale promotion of energy projects from renewable sources that do not rely solely on energy policies based on an analysis of non use values of green e as well as the application of the contingent valuation cv method and payment card pc introduction technology the average wtp ranges from rmb 7 91 yuan month to 10 30 yuan month approximately us 1 15 1 51 month with an exchange rate of 6 83 yuan us yuan us for urban residents in jiangsu province the current work also explores the differences in demographic variables across varying wtp amounts and the different marginal effects of demographic variables at the same level of wtp the findings reveal that there are significant differences in demographic variables such as level of education household income and location of residence across the population segments moreover the finding that some respondents with high income and higher education prefer higher wtp amounts to lower wtp amounts suggests that green e is a luxury product and consequently a veblen effect exists in certain chinese market segments

why invest in wind energy career incentives and chinese renewable energy politics we study wind development at the provincial level in china modelling installed wind capacities as a function of both economics and politics we assume that the top provincial officials desire to maximize their chances of promotion under the chinese cadre evaluation system we expect that those with the strongest incentives to perform in order to achieve promotion would work harder to comply with the central government s policy agenda to promote renewable energy collecting and testing data on provincial leaders characteristics we find that provinces governed by party secretaries who were approaching the age of 65 are associated with significantly higher level of wind installed capacities this result supports the political tournaments theory of chinese politics we also find that better educated party secretaries are likely to be more supportive of renewable energy implying that education acts to encourage provincial leaders to support the central government s policy

government funded renewable energy innovation in china abstract with the rapid development of the economy china is facing pressures caused by traditional energy deficiency and environmental pollution in recent years which has forced the chinese government to start to pay attention to the development and utilization of renewable energy re this article based on data and statistics available up to 2008 studies features of china s re technology innovation and problems thereof it finds that national science and technology programs are the main aspect of china s re technology innovation and most of r d funds for the re technology come from china s three main national programs besides the overall expenditures on re technology innovation constitute only a small proportion of china s total domestic r d funding and seem not enough this paper also finds that compared with research and development stages of re technology the demonstration and diffusion of re technology in china are given less attention and thus are relatively less sufficient furthermore influenced by china s traditional scientific research system there appears lack of sufficient incentives and opportunities for private sectors to fully participate in re technology innovation because most national programs are undertaken by universities or research institutes

consumers in the green electricity market in finland abstract green electricity i e electricity produced from environmentally less harmful sources and marketed as such has been available to finnish households since 1998 but the demand for it has remained low in this paper we discuss the barriers identified by consumers to purchasing green electricity and contrast these with the interpretation energy sector actors give to consumer passivity the empirical material consists of thematic interviews energy policy actors often assume that consumers passivity signifies their lack of interest or low environmental consciousness this results partly from the failure to differentiate between the roles of consumer and citizen the interpretation the energy sector actors give to consumer passivity and the role they assign to consumers affect the direction of green electricity policy we argue that consumers need more information on both the environmental impact of different electricity products and in particular about the electricity supply and electricity contracts in a liberalised electricity market if they are to become active in the market

residential consumers in the cape peninsula s willingness to pay for premium priced green electricity a number of studies have explored the willingness i e stated willingness as opposed to actual willingness of consumers to pay a premium for green electricity in developed countries however little is known about how this translates into an emerging economy context this study investigates the level of willingness of residential households in south africa s cape peninsula to pay a premium for electricity from renewable energy it methodologically drew on recent contributions in the literature on norm motivated behaviour used to identify testable factors that could influence residential consumers willingness to pay wtp interestingly the study found a significant positive link between household income and wtp for green electricity contrary to the findings of some previous studies not only are higher income households more likely to pay a premium but typically they are also willing to pay a bigger premium it was also further established that the view that green electricity is reliable involvement in the recycling of waste and the belief that everyone should contribute to green electricity generation drive the wtp

estimating willingness to pay for renewable energy in south korea using the contingent valuation method the importance of renewable energy as a response to climate change is universally acknowledged however its successful implementation requires public approval and cooperation this study aims to identify the level of renewable energy acceptance in korea by estimating korean consumers additional willingness to pay wtp using the contingent valuation cv method which is the most widely used to analyze consumer preferences the estimation results indicate that korean consumers are willing to pay an additional usd 3 21 per month for electricity generated with renewable energy however wtp in korea is low relative to other advanced nations indicating that these values could be influenced through policies aimed at improving knowledge and acceptance of renewable energy sources among korean consumers

the energy policy outlets for community acceptance of ecological investment in china abstract policy implication about satisfactions of energy use and housing are much sensitive to social discount rate changes which can increase the dissatisfaction of residential happiness because of an increasing price mechanism when per capita resource faces to decline we thus estimate the private expected rates of return on ecological investment to improve urban and peri urban environmental infrastructures are about to 7 54 and 18 37 respectively the endogeneities of income and saving rise can increase the uncertain part of private discount rate up to a higher estimated subjective social discount rate about 14 46 for urban or 8 86 for peri urban environmental infrastructures improvement the estimated time preference rate can be raised from 1 to 1 72 the prediction of these estimated private discount rate can ease at least 20 of the dissatisfaction to energy use and 10 of the dissatisfaction to housing conditions therefore we suggest opening the landscape rights to individual willingness to invest and providing options to let people pay a part of their pensions for temporal permits to living in some well served villages where are close to the places with advanced environmental amenities and being supported by central planning policy via the crowdfunding operation for improving environmental quality

optimal path for controlling co2 emissions in china a perspective of efficiency analysis this paper examines the optimal control of co2 emissions from a perspective of efficiency analysis several centralized data envelopment analysis dea models are introduced to study the optimal allocation of co2 emissions under spatial temporal and spatial temporal allocation strategies respectively the models have been used to determine the optimal paths for controlling co2 emissions at provincial and regional levels in china a sensitivity analysis of the optimal path on the emission control coefficient under spatial temporal allocation strategy is further carried out our empirical results show that more developed regions should take emission reduction responsibility earlier than less developed regions in china of the three allocation strategies spatial temporal allocation strategy seems to be a better choice for achieving the optimal control of co2 emissions at country level since it is more encompassing by allowing both timing and spatial substitutions it is also found that there exists an inverted u shape relationship between the aggregate optimal gdp and the emission control coefficient which shows that modest emission reduction policy might be more appropriate for china in order to achieve the joint goals of economic development and co2 emission reduction

preferences for green electricity investment and regulatory incentives abstract this paper develops a theoretical model to investigate how consumers preferences for green electricity affect the incentives of a regulated firm to provide and invest in electricity from green sources optimal incentive regulation implies a trade off between providing an optimal match of consumers with green and brown electricity and efficient incentives to invest in cost reductions we show that a single price cap on green electricity is ineffective as it yields the same expected market outcome as with an unregulated firm price caps on both green and brown electricity are akin to a market share target policy which implements efficient investment but gives an inefficient ex post consumer allocation a single price cap on brown electricity weakly dominates these schemes and gives rise to three different optimal regulation regimes as a function of the underlying technology parameters

growth environment and uncertain future preferences the attitude of future generations towards environmental assets may well be different from ours and it is necessary to take into account this possibility explicitly in the current debate about environmental policy the question we are addressing here is should uncertainty about future preferences lead to a more conservative attitude towards environment previous literature shows that it is the case when society expects that on average future preferences will be more in favor of environment than ours but this result relies heavily on the assumption of a separability between consumption and environmental quality in the utility function we show that things are less simple when preferences are non separable the attitude of the society now depends not only on the expectation of the change in preferences but also on the characteristics of the economy impatience intertemporal flexibility natural capacities of regeneration of the environment relative preference for the environment on its history initial level of the environmental quality and on the date at which preferences are expected to change near or far future

carbon dioxide emissions allocation a review carbon dioxide co2 emissions allocation plays a fundamental role in determining reduction responsibility at economy level or emission permits at firm level past decades have seen the development and applications of various methods for co2 emissions allocation this paper provides a literature review of co2 emissions allocation with emphasis on the evolution of allocation methods used it begins with a summary of the most popular allocation principles and criteria that lay a foundation for the development of allocation methods we then classify the existing allocation methods into four groups namely indicator optimization game theoretic and hybrid approaches the main features and findings of past studies are identified and summarized while the fairness principle prevails in earlier studies the efficiency principle has been found to receive increasing attention recently we also present a comparison of the empirical results based on ten popular indicator methods to show how indicator choice affects the allocation results issues related to selecting appropriate methods in co2 emissions allocation are finally discussed further research may be carried out to strike a balance between fairness and efficiency so that the allocation results become more widely acceptable and economically feasible

mandatory versus voluntary payment for green electricity summary renewable energy sources have a critical role to play in contributing to the diversity sustainability and security of energy supplies the main objective of the paper is to gain an understanding of the support mechanism of renewable energy sources most preferred by households in the united kingdom this paper analyses households preferences and willingness to pay under a mandatory scheme where all households contribute compared to a voluntary scheme where only those who wish to pay to support renewables do so such as the green tariffs offered by electricity suppliers in the uk two self designed contingent valuation method cvm surveys are used to explore whether the type of payment option has an impact on households willingness to pay wtp for increasing share of renewable energy in electricity generation the paper also investigates whether the type of payment mode affects respondents self reported certainty of paying their stated valuations the results indicate that the likelihood of paying a positive amount for supporting renewable energy is higher under a mandatory scheme compared to a voluntary payment option in the uk respondents have a higher level of certainty in paying their stated wtp under a mandatory payment scheme

efficient dynamic pollution taxation in an uncertain environment this paper analyzes efficient pollution taxation within a stochastic model of endogenous growth pollution is a by product of production and causes disutility furthermore the productivity which results from environmental quality is uncertain this reflects e g uncertain capital depreciation induced by natural disasters like hurricanes or floods this uncertainty is shown to raise an ambiguous impact on the optimal pollution level as well as on optimal environmental taxation market equilibrium turns out to be suboptimal since the households mis perceive their individual impact on pollution conditions for welfare maximizing pollution taxation are stated and it is shown that a direct pollution tax is not appropriate to yield pareto optimal growth instead a linear capital income tax together with a linear abatement subsidy build an efficient tax scheme if secondarily the governmental budget is balanced moreover an increase in the riskiness of environmental productivity may even lead to an increase in the optimal pollution level and to a decrease in optimal environmental taxation depending predominantly on the preference parameters

portfolio choice with non expected utility in continuous time non expected utility preferences which can distinguish intertemporal substitution from attitudes towards risk are extended to continuous time the consumption savings and portfolio problem is solved for constant intertemporal elasticity of substitution and constant relative risk aversion

explaining the diversity of motivations behind community renewable energy community based renewable energy initiatives may be important actors in the transition toward low carbon energy systems in turn stimulating investments in renewable energy production at the community level requires a better understanding of investors motives this paper aims to study the heterogeneity of motivations that drive individuals to participate in community renewable energy projects and the underlying explanatory factors behind this as well as the implications for their level of engagement in initiatives based on quantitative data from an original survey conducted with two renewable energy cooperatives in flanders the statistical analysis shows that cooperative members should not be considered as one homogeneous group several categories of members with different motives and levels of engagement can be distinguished this heterogeneity is explained by contrasts in terms of institutional settings spatial patterns and attitudes to the diffusion of institutional innovations regarding policy implications the findings suggest that this heterogeneity should be taken into account in designing more effective supporting policies to stimulate investments at the community level the activation of social norms is also shown to be a promising mechanism for triggering investment decisions although the implications of its interplay with economic incentives should be further explored

progressive taxes equity and human capital accumulation in an endogenous growth model with overlapping generations abstract this paper explores the trade off between efficiency and intra and intergenerational equity in an endogenous growth model of an open economy with overlapping generations and human capital accumulation we demonstrate that progressive taxes hurt long run growth and exacerbate distortions associated with intergenerational spillovers however by raising saving these taxes strengthen the net foreign asset position

editorial to the special issue sustainable energy policies in northeast asia abstract paris agreement in 2015 made a great milestone toward the sustainable development worldwide based on the bottom up market and performance oriented mechanism new climate regime on the paris agreement provides the optimal path control for toward the below 2 c target from pre industrial levels by decreasing substantial ghg emissions unfortunately the withdrawal of the usa from paris agreement may result in 13 gtco2 higher than its original 56 gt target 23 increase nonetheless the strong commitment by china and pro active participation of the northeast asian countries made a new hope against the global warming this special edition shall shed the light on the efforts by these countries based on the comparative analysis to result in the oriental model for the sustainable development and its energy policies especially urbanization became one of the hottest issues for the special issue and the differentiated diverse efforts by the governments are much emphasized in this issue

supporting renewable energy on liberalised markets green electricity between additionality and consumer sovereignty abstract the german feed in regulation has been perhaps the most effective promotional policy for green electricity however with the growing momentum of the liberalisation process the current regulation is challenged by structural problems about how to address the demand side price regulation lefts only little room for private green electricity market activities moreover the success of the feed in regulation depends on a strict differentiation of the political segment and the emerging green electricity markets the question therefore is about the role green electricity markets can or should perform in general in order to evaluate green electricity markets the additionality criteria is frequently used implying that markets are only desirable if they lead to additional environmental effects the additionality criteria has two implications first transformed into individual behaviour additionality implies that consumers are assumed to act as pure altruists however there is evidence from empirical studies that green electricity consumers behave more as impure altruists they are not so much interested in the objective environmental impact of their behaviour but more objected to receive a private satisfaction from buying an environmental friendly product whereas theoretical models in the case of pure altruism suggest that private activities crowd out totally when policy becomes active in supporting the public good this crowding out disappears in the case of impure altruism second using end state criteria such as the additionality principle as pre condition and neglecting process criteria such as consumer sovereignty means to prevent establishing competitive market process right at the outset in principle

towards a contemporary approach for understanding consumer behaviour in the context of domestic energy use domestic sector energy use is increasing in the uk and currently accounts for 30 of total use policies of liberalised energy markets have allowed greater consumer choice but have not sought to reduce carbon emissions overall sales of energy efficiency products are rising but uk housing stock standards are poor and do not facilitate improved efficiency and further the sales of such products are influenced by their price thus the higher capital costs of products such as boilers and solar systems make them initially unattractive to consumers previous market based research into the adoption of energy efficiency products has often focused on single factors for example demographics this has limited the ability of policy makers to make informed decisions that address a broader range of factors such as individuals cognitive abilities values and attitudes as well as external factors such as social networks marketing and products and services this paper provides a wider critique of the theoretical base related to consumer behaviour product attributes and socio environmental theories that relate to energy use the aim of the paper is to draw together theories relevant to energy use in order to aid policy making in the broader context and to develop the discussion around integrated theories of consumer behaviour

citizen versus consumer challenges in the uk green power market abstract this paper investigates the potential advantages and disadvantages of green power products as opposed to the traditional fossil fuel levy which was the uk s chosen tax regime as a means of developing renewable energy in the uk willingness to pay for electricity generated from renewables is investigated results indicate that willingness to pay varies with social status and income however results demonstrate that there is a significant minority in full support of some sort of fiscal initiative electricity generated from renewables is a concept supported by the majority however given the stated willingness to pay it is unlikely that any new renewable capacity will result from green tariff schemes in the near term it is concluded that the green citizen must continue to co exist with the green power purchaser if the uk is to make any significant improvement in the contribution of renewable energy to electricity demand the authors would like to acknowledge the support of irene lorenzoni and jane powell of the centre for social and economic research on the global environment university of east anglia leicester energy efficiency advice centre and leicester energy agency

warm glow from green power evidence from australian electricity consumers abstract green electricity products are increasingly made available to consumers in many countries in order to address a number of environmental and social concerns most of the literature on this green electricity market focuses on consumers characteristics and product attributes that could affect participation however the contribution of this environmental consumerism to the overall environmental good does not depend on participation alone the real impact relies on market participation for green consumers the proportion of green consumers combined with the level of green consumption intensity the commitment levels or proportion of consumption that is green we design an online interface that closely mimics the real market decision environment for electricity consumers in western australia and use an error component model to analyze consumers choice of green electricity products and their commitment levels we show that product attributes have limited impact on the choice of green products however there is still great potential for better participation by improving the design of green electricity programs when green products are selected most respondents select the minimum commitment possible and this is insensitive to the premium being charged on green power suggesting that we are largely observing a buy in warm glow for carbon mitigation

public investment in infrastructure in a simple growth model abstract in this paper we examine the implications for capital accumulation when infrastructure enters as an external input into private production functions in our model infrastructure is nonexclusive but may exhibit varying degrees of nonrivalry revenues from uniform taxes on capital and labor income are used to finance public investment in infrastructure we show that the optimal tax rate is independent of the degree of nonrivalry when production exhibits constant returns to augmentable factors the equilibrium displays constant growth for most parameters the growth rate depends on the population size under decreasing returns the optimal trajectory exhibits monotonic convergence to a steady state level

on the environmental discount rate abstract in this paper i show that environmentalism itself can provide a rigorous foundation for the low and declining discount rates that environmentalists seem to favor in long term cost benefit calculations if indeed it is a stylized fact that we are moving toward a world where environmental spending is increasingly important that scenario per se may significantly lower the social rate of return a formula is derived for the ratio of social to private discount rates as a simple function of two operational environmental parameters the formula is used to explain why the social rate of return ought to be lower than the private rate and why this gap called environmental drag when measured in terms of equivalent evaporation of national income may be expected to increase over time

are there limits to growth a simple theoretical model of pollution is developed that generates an inverted u shape relationship between per capita income and environmental quality this model is then used to study long run growth the same inverted u shape is shown to appear in time series and the prospects for sustained growth are shown to hinge on whether increasingly strict environmental regulation is compatible with a constant rate of return on capital implementation is also studied tax and voucher schemes are shown to have an advantage over direct regulation because they provide the correct incentives for capital accumulation copyright 1998 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

us consumers willingness to pay for green electricity abstract we analyze us consumers demand for environmental attributes of deregulated residential electricity services using results from a survey designed to elicit consumers willingness to pay for such attributes and using results from a hedonic analysis of actual price premiums charged for green electricity in several deregulated markets survey results suggest that many population segments are willing to pay for decreased air emissions even if there is no alteration in fuel source furthermore several groups are willing to pay significantly more when emissions reductions stem from increased reliance upon renewable fuels the hedonic analysis suggests that several product features not considered in the survey help explain real price premiums including fuel mix from newly created renewable generation capacity green e certification brand name and state of offer while survey and hedonic results are not easily compared due to limitations of the survey both point to similar values for key environmental attributes though the survey results are likely to overstate actual willingness to pay in sum the results suggest that consumer driven purchases can in part support the future of renewable generation capacity in the united states though reliance upon other policy alternatives may be needed if energy prices spike

do subsidies work better in low income than in high income families survey on domestic energy efficient and renewable energy equipment purchase in china abstract domestic energy efficient and renewable energy eere equipment shows a great energy saving potential in household energy consumption two rounds of large scale financial subsidy programs have been developed in china since 2010 to promote the adoption of green equipment however how these subsidies attract chinese families of different income levels is not fully explored given this knowledge gap we conducted a self completion questionnaire survey in 2012 to ask 526 respondents about their purchase of domestic eere equipment we explored the effects of subsidy incentives and family incomes on the purchase attitudes and intentions of individuals toward the seven categories of eere equipment we find that family income positively moderates the relationship between eere equipment purchase attitude and behavioral intention and subsidy incentives positively affect the moderating effect of family income in other words a higher family income and better familiarization with subsidy incentives can promote the transformation of green attitudes into eere equipment purchasing intention the results may indicate that the subsidized prices are still high in the view of the low income families this study contributes to the understanding of the effects of chinese subsidy incentives and of the economic concerns of people about the purchase of domestic eere equipment

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

fiscal policy inflation and the accumulation of risky capital the effect of government policies on the level of investment and inflation has become a major concern of policy makers in a number of industrial countries proposals to raise the level of business investment have included overall tax cuts tax incentives to spur investment and a reduction in the level of government spending this paper presents a theoretical apparatus to explore the relationships between fiscal policy government debt inflation and capital accumulation it develops a one sector growth model embodying a stochastic production function and government fiscal policy atomistic agents in the economy choose consumption levels and allocate their wealth between risky capital and risky government debt to maximize expected discounted utility over an infinite horizon fiscal policy by affecting asset yields affects the composition of portfolios the price of government bonds and the accumulation of capital the model is used to answer three general questions 1 does the level of government expenditure affect the rate of capital accumulation and inflation in steady state 2 does the mode of government finance when the choice is between an income tax and deficit finance affect these magnitudes 3 what is the effect of uncertainty in the productivity of capital on growth the analysis relates to several areas of literature 1 the analysis of the relationship between capital accumulation and debt 2 the theory of the demand for government debt 3 considerations of the effect of income taxation on risk bearing and 4 the analysis of capital accumulation under uncertainty 1 the effects on output and the capital stock of the government s expenditure decision and its decision to finance its expenditure by taxation or debt issue are explored in two major bodies of economic theory the literature on the burden of the debt as developed by modigliani 1961 diamond 1965 and phelps and shell 1969 for example implies that policies which increase the value of outstanding government debt will tend to lower the level of the capital stock by displacing capital with public debt in private wealth the theory of money and growth as represented by tobin 1965 and sidrauski 1967b also implies that government debt displaces capital but specifically recognizes the role of capital gains on government debt

are french consumers ready to pay a premium for eco labeled seafood products a contingent valuation estimation with heterogeneous anchoring could the future french eco label for fresh seafood products find its place in the french market this study employs a contingent valuation method to estimate french consumers willingness to pay wtp for eco labeled fresh seafood products we exploit original data from a survey carried out in 2010 where 626 participants responded to a double bounded dichotomous choice model through an ascending or descending bid system controlling for shift and anchoring effects in random effect probit models we significantly improve estimation of wtp and its determinants for the three species studied monkfish lobster sole in particular when using heterogeneous anchoring we show that wtp is positively correlated to respondents income and also to their environmental concern to living alone to living far from the coast and to trusting ngos or public institutions more than producer organizations to implement an eco label we also show that the mean price premiums do not differ between species finally on average the maximum premium consumers accepted to pay is approximately 10 of the product price

sustainable growth and the environmental kuznets curve abstract this paper develops an endogenous growth model with pollution and both human and physical capital human capital is produced cleanly and physical capital can be used for pollution control economic growth is sustainable in the long run it is optimal for human capital to grow more rapidly than physical capital output and consumption while pollution declines for realistic parameter values our results differ sharply from stokey s result for an ak technology that sustained economic growth is not optimal the model can generate an environmental kuznets curve a pollution tax or a voucher system can implement the pareto efficiency solution

pollution the cost of public funds and endogenous growth abstract theories of endogenous growth are used to investigate the effect of environmental policy on the rate of economic growth and the provision of public goods in a second best market outcome pollution gives rise to a negative environmental externality and is modeled as an inevitable by product of production the government faces the dual task of on the one hand internalising environmental externalities and on the other hand raising public funds to finance public spending a tougher environmental policy reduces the rate of economic growth improves environmental quality raises the optimal tax rate and changes the composition of public spending away from productive government spending towards public consumption and abatement the marginal cost of public funds falls rises if productive government spending is negligible substantial relative to public consumption and abatement

a review of international green power markets recent experience trends and market drivers green power marketing the act of differentially selling electricity generated wholly or in part from renewable sources has emerged in more than a dozen countries around the world almost two million customers worldwide buy green power today this paper reviews green power marketing activity in australia canada japan the us and in a number of countries in europe to gain an understanding of consumer demand for electricity generated from renewable sources it also examines key factors that influence market penetration of green power products such as product designs pricing incentives marketing strategies policies and product certification 2002 elsevier science ltd all rights reserved

green electricity in the market place the policy challenge the paper explores the implications of the liberalization of electricity markets in europe and north america for policy means and mechanisms to enhance the market penetration of renewables applying a co evolutionary approach the argument highlights the need for policy intervention to help producers and consumers move out of technological trajectories favoring non renewable electricity on the production side energy generation is locked into the central power station system deriving from more than a hundred years of technological development along a specific system trajectory on the consumption side the locked in effect results from a similarly long experience with electricity provision by monopoly suppliers and the associated lack of consumer choice and responsibility for product differentiation as the analysis shows policy strategies targeting both the production and consumption sides of the electricity market are needed for effective intervention furthermore policy strategies should draw on a clear analysis of the inertia and dynamism underlying the production and consumption of electricity in the light of such evolutionary dynamics the analysis demonstrates the insufficiency of the policy approaches currently employed to foster the market share of renewables based electricity instead the authors suggest a reflexive policy approach to initiate and support a reorientation towards green electricity emphasizing the need for learning and communication between and among societal actors

adoption of green electricity by german small and medium sized enterprises smes a qualitative analysis abstract the german government aims at generating 80 percent of the country s electricity from renewable sources by 2050 in the german liberalized electricity market customers can support this target by purchasing green electricity ge i e electricity produced from renewable energy sources yet the demand for ge has remained low among small and medium sized enterprises smes which represent the country s biggest electricity customer group based on a review of the relevant literature this article investigates factors that determine smes decisions whether to adopt ge for this purpose thematic interviews with ge providers and representatives of smes are performed and qualitatively analyzed the results of the interview analysis form the basis for a conceptual framework that reflects the ge adoption decisions of german smes and lay the groundwork for future analysis in this area

stuck between a roc and a hard place barriers to the take up of green energy in the uk abstract this paper examines the uk mechanisms for ensuring future investment in renewable energy through consumer adoption of green energy tariffs and the renewable obligation certificate roc system using a national survey and focus groups the stated willingness by uk customers to pay a premium for renewable or green energy and actual take up of such tariffs is assessed substantial differences between willingness to pay for and the adoption of green energy tariffs are reported this disparity is linked to a range of factors including consumer confusion lack of supply complexities of constructing green source tariffs under the roc system and a lack of customer trust it is concluded that the re definition of the green energy market in favour of green source tariffs greater direct compliance with the renewable obligation by addressing supply constraints and efforts in providing clearer information and choices for consumers via a compulsory green energy accreditation scheme are required if willing consumers are to contribute to investment in renewable energy

public investment congestion and private capital accumulation this paper analyses the impact of public investment on the dynamics of private capital formation in an intertemporal optimising market clearing framework the key feature characterising the analysis is that the public good is treated as a durable capital good subject to congestion we show how in the presence of congestion the effect of government investment on private capital formation involves a tradeoff between the degree of substitution between private and public capital in production and the degree of congestion both lump sum and distortionary tax financing are considered with this tradeoff being tightened in the latter case

green power voluntary purchases price elasticity and policy analysis abstract green power schemes offer electricity from renewable energy sources to customers for a higher price than ordinary electricity this study examines the demand characteristics of green power in australia and policies which could increase its sales a sample of 250 pooled time series and cross sectional observations was used to estimate a statistically significant elasticity of demand for green power with respect to price of 0 96 with a 95 confidence interval of 68 the wide variation in market penetration between jurisdictions and between countries for green power and the low awareness of green power found by surveys indicate that green power sales could be increased by appropriate marketing and government policies the most cost effective means to increase sales was found to be advertising campaigns although only one australian example was found in the state of victoria in 2005 it was also found that full tax deductibility of the green power premium to residential customers exemption from the goods and services tax and a tax rebate for green power are all probably less cost effective for promoting sales than direct government purchase of green power in terms of cost per unit of increased sales

scientific progress and irreversibility an economic interpretation of the precautionary principle abstract we consider the problem of the optimal use of a good whose consumption can produce damages in the future scientific progress is made over time that provides information on the distribution of the intensity of damages we show that this progress induces earlier prevention effort only if prudence is larger than twice absolute risk aversion this paper thus identifies the class of quite restrictive but plausible conditions such that scientific uncertainties justify an immediate reduction of the consumption of a potentially toxic substance

can renewable energy power the future fossil fuels face resource depletion supply security and climate change problems renewable energy re may offer the best prospects for their long term replacement however re sources differ in many important ways from fossil fuels particularly in that they are energy flows rather than stocks the most important re sources wind and solar energy are also intermittent necessitating major energy storage as these sources increase their share of total energy supply we show that estimates for the technical potential of re vary by two orders of magnitude and argue that values at the lower end of the range must be seriously considered both because their energy return on energy invested falls and environmental costs rise with cumulative output finally most future re output will be electric necessitating radical reconfiguration of existing grids to function with intermittent re

investment barriers and incentives for marine renewable energy in the uk an analysis of investor preferences abstract deployment of marine renewable energy mre in the uk is desirable in order to address climate change meet mandatory eu renewable energy targets and provide significant economic development opportunities including new export markets public funding constraints in the uk mean that substantial investment is required from the private sector to commercialize the industry by focussing on investor attitudes and behaviours towards wave and tidal technologies this paper reveals significant observations from the investment community with serious implications for the future of the mre industry through a series of in depth interviews with individuals from the investment community device developers and industry support the research seeks to identify common barriers and incentives to investment the paper demonstrates that although investors attitudes are generally aligned they do appear to have changed over time of the participants that had previously invested in early stage mre device development none were likely to do so again it is concluded that this is a function of investors greater understanding of the scale and unpredictability of the costs and the length of time required to develop these technologies this presents a significant policy challenge for all actors interested in the commercialization of wave and tidal technologies

willingness to pay for green electricity in korea a contingent valuation study abstract green electricity is energy that is generated from renewable energy sources such as solar power wind power small scale hydroelectric power tidal power and biomass power these sources mostly do not produce pollutants and are considered environmentally friendly however considering the current state of technology they are more costly government should take visible actions to compensate for the increased production costs this paper attempts to apply a contingent valuation cv method to obtain at least a preliminary evaluation of the benefits that ensue from the introduction of the policy that raises the percentage of green electricity consumption from 0 2 of the total electricity supply to 7 by 2011 overall the cv survey was successful in eliciting the willingness to pay wtp for green electricity considering that the cv method operated within respondents abilities to answer and the wtp estimates were statistically significant the monthly mean wtp estimates from parametric and non parametric methods were krw 1681 usd 1 8 and krw 2072 usd 2 2 respectively the estimates of the annual benefits to relevant residents amounted to krw 150 5 billion usd 157 5 million and krw 185 6 billion usd 194 2 million respectively

stochastic growth under wiener and poisson uncertainty the expected growth rate of a stochastic ak economy under poisson uncertainty is derived the differences and similarities of economic growth under wiener and poisson uncertainty are discussed to understand the uncertainty growth nexus the implicit risk premium under poisson uncertainty is additionally derived

determinants of demand for green products an application to eco label demand for fish in europe abstract in this paper we confront the theoretical motivations of the consumption of eco friendly products and the factors influencing the european perceptions regarding the fact that fish caught using an environmentally friendly technique may carry a special label we take advantage of the recent integration of non economic elements in the microeconomic analysis of consumers behavior in order to highlight the factors leading to their demand for green products thanks to an original european survey on seafood product carried out on more than 5000 consumers we test the influence of intrinsic motivation information localization and socio economic factors on the demand for an eco label for fish our results show a significant connection between the desire for eco labeling and seafood features especially the freshness of the fish the geographical origin of the fish and the wild vs farmed origin of the fish moreover we prove the major role played by the fish price we also demonstrate that the ecological issue regarding fisheries is highly connected to consumer information intrinsic motivation and socio economic status the typical green fish consumer is a young woman well educated well informed on the state of marine resources and not very trusting of the regulation of the fisheries consumers who are aware of the importance of marine resource preservation have the same profile