investigating preferences for dynamic electricity tariffs the effect of environmental and system benefit disclosure dynamic electricity pricing can produce efficiency gains in the electricity sector and help achieve energy policy goals such as increasing electric system reliability and supporting renewable energy deployment retail electric companies can offer dynamic pricing to residential electricity customers via smart meter enabled tariffs that proxy the cost to procure electricity on the wholesale market current investments in the smart metering necessary to implement dynamic tariffs show policy makers resolve for enabling responsive demand and realizing its benefits however despite these benefits and the potential bill savings these tariffs can offer adoption among residential customers remains at low levels using a choice experiment approach this paper seeks to determine whether disclosing the environmental and system benefits of dynamic tariffs to residential customers can increase adoption although sampling and design issues preclude wide generalization we found that our environmentally conscious respondents reduced their required discount to switch to dynamic tariffs around 10 in response to higher awareness of environmental and system benefits the perception that shifting usage is easy to do also had a significant impact indicating the potential importance of enabling technology perhaps the targeted communication strategy employed by this study is one way to increase adoption and achieve policy goals

valuing the attributes of renewable energy investments increasing the proportion of power derived from renewable energy sources is becoming an increasingly important part of many countries s strategies to achieve reductions in greenhouse gas emissions however renewable energy investments can often have external costs and benefits which need to be taken into account if socially optimal investments are to be made this paper attempts to estimate the magnitude of these external costs and benefits for the case of renewable technologies in scotland a country which has set particularly ambitious targets for expanding renewable energy the external effects we consider are those on landscape quality wildlife and air quality we also consider the welfare implications of different investment strategies for employment and electricity prices the methodology used to do this is the choice experiment technique renewable technologies considered include hydro on shore and off shore wind power and biomass welfare changes for different combinations of impacts associated with different investment strategies are estimated we also test for differences in preferences towards these impacts between urban and rural communities and between high and low income households

household fuelwood demand and supply in nepal s tarai and mid hills choice between cash outlays and labor opportunity abstract subsistence households are a leading source of deforestation and their consumption of fuelwood in particular is important in many developing countries yet the empirical economic examinations of fuelwood consumption are sparse particularly for rural areas where the deforestation occurs and we would argue that forest policy is often designed without a good understanding of the potential responses of subsistence households to the new policy this paper addresses these issues with household evidence from the two major populated regions of nepal market prices labor opportunities the availability of substitutes and measure of access to the basic resource are the most reliable predictive variables for fuelwood consumption and production there are however regional differences and important distinctions between the elasticities of fuelwood collecting or purchasing households with respect to these predictive variables the difference between collecting and purchasing households is notable it recommends forestry policies that target the labor opportunity and the physical resource in regions where collecting households dominate and policies that affect the fuelwood market itself in regions where purchasing households are important a second interesting finding is that fuelwood is relatively scarcer prices are higher in the mid hills and both collecting and purchasing households in this region are beginning to respond to deforestation by using their own land for fuelwood production

life cycle consumption and hyperbolic discount functions abstract studies of animal and human behavior suggest that discount functions are approximately hyperbolic ainslie picoeconomics 1992 hyperbolic models explain a wide range of empirical anomalies including 1 missing precautionary savings effects 2 incongruence between the elasticity of intertemporal substitution and the inverse of the coefficient of relative risk aversion 3 consumption discontinuities at retirement 4 variation in patience over the life cycle 5 consumer self reports of undersaving 6 disproportionate retirement accumulation in illiquid assets 7 asset specific marginal propensities to consume and 8 declining national savings rates in developed countries hyperbolic models also provide a new framework for analyzing the welfare gains that come from pro saving policies like social security and tax deferred retirement accounts

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

axiomatization and measurement of quasi hyperbolic discounting this article provides an axiomatic characterization of quasi hyperbolic discounting and a more general class of semi hyperbolic preferences we impose consistency restrictions directly on the intertemporal trade offs by relying on what we call annuity compensations our axiomatization leads naturally to an experimental design that disentangles discounting from the elasticity of intertemporal substitution in a pilot experiment we use the partial identification approach to estimate bounds for the distributions of discount factors in the subject pool consistent with previous studies we find evidence for both present and future bias jel codes c10 c99 d03 d90

daniel mcfadden and the econometric analysis of discrete choice this article describes the contributions of daniel mcfadden to the econometric analysis of discrete choice section i overviews the main elements of mcfadden s research on discrete choice analysis and notes some of his other contributions to economics section ii addresses the fundamental methodological breakthrough that mcfadden made in conditional logit analysis of qualitative choice behavior iii 1974 1 section iii discusses the subsequent development of discrete choice analysis into one of the foundations of modem econometrics section iv concludes

diffusion of rural innovations some analytical issues and the case of wood burning stoves abstract the literature on the diffusion of rural innovations in third world countries reveals a spectrum of approaches to the diffusion process it is argued here that the effectiveness of a particular approach in the diffusion of particular innovations would depend on the technical the economic and the social characteristics of the innovations a typology of innovations in terms of these characteristics has been drawn up this provides the analytical framework within which the instance of wood burning stoves is concerned a priori the characteristics of this innovation are seen to be such as to necessitate the close involvement of the users in the design process itself they point to the likely inappropriateness of the usual top down approach to diffusion available evidence relating to actual experience with promoting wood burning stoves is seen to bear this out

better technology better plots or better farmers identifying changes in productivity and risk among malagasy rice farmers we introduce a method for properly attributing observed productivity and risk changes among new production methods farmers and plots by controlling for farmer and plot heterogeneity results from madagascar show that the new system of rice intensification sri is indeed a superior technology although about half of the observed productivity gains appear due to farmer characteristics rather than sri itself the technology generates the estimated average output gains of more than 84 the increased estimated yield risk associated with sri would nonetheless make it unattractive to many farmers within the standard range of relative risk aversion

valuing the reliability of the electrical power infrastructure a two stage hedonic approach the reliability of electrical power supply is amongst the conditions that inform house purchase decisions in all urban areas reliability depends in part on the conditions of the power generation and distribution infrastructures involved and in part on environmental conditions its value to homeowners may be capitalised into the value of the house in this paper a hedonic pricing approach is used to estimate the capitalised value of the reliability offered by distribution infrastructures and the environmental conditions with which they interact in phoenix arizona a first stage estimates the impact of infrastructure and environmental conditions on reliability in a second stage the capitalised value of reliability from the marginal willingness to pay for reliability revealed by house purchase decisions is estimated and used to infer the value of both infrastructural characteristics and environmental conditions

adoption of agricultural innovations in developing countries a survey this paper reviews various studies which have provided a description and possible explanation to patterns of innovation adoption in the agricultural sector the survey points out that the tendency of many studies to consider innovation adoption in dichotomous terms adoption nonadoption may not be appropriate in many cases where the actual decisions are defined over a more continuous range more attention needs to be given to the socio cultural and institutional environment in area studies so that their interrelation with economic factors affecting adoption can be inferred the presence of several interrelated innovations is another aspect that needs to be considered more carefully in future research since a number of simultaneous decisions may be involved furthermore the possibility of regular sequential patterns in adopting components of a new technological package should be specifically addressed in future studies finally the impact of differential adoption rates on land holding distribution merits attention in future research

what will my account really be worth experimental evidence on how retirement income projections affect saving abstract many investment companies have begun providing their defined contribution pension participants with individualized retirement income projections the u s congress is currently considering whether to require them all to do so evidence on the potential impact is scant though a large body of economic research suggests that individuals are not currently making optimal retirement saving decisions through a field experiment we measure how provision of retirement income projections along with enrollment information affects individuals contributions to employer sponsored retirement accounts we find that the intervention boosted annual contributions to employer retirement accounts by 85 equivalent to 3 6 of the average contribution level or 0 15 of average salary relative to those who received no intervention in addition randomly assigned assumptions regarding retirement age investment returns and hypothetical contribution amounts were used to generate the projections and were found to have significant impacts on saving behavior this finding suggests that care is warranted in the design and communication of projections

the cost of electric power interruptions in the industrial sector estimates derived from interruptible service programs the electric power industry has become increasingly interested in the value customers place upon service reliability with the demand for reliability couched in terms of outage or shortage costs the survey based method of eliciting these costs dominates the literature this paper explores and demonstrates a method for estimating outage and shortage costs based upon behavioral data a discrete choice model is developed for estimating shortage costs using observed decisions of industrial customers regarding participation in interruptible service programs the resulting shortage cost estimates of 4 per kwh unserved for a one hour interruption are consistent with previous survey based estimates

the value of continuous power supply for flemish households abstract this paper estimates the willingness to pay accept wtp wta of flemish households for continuous power supply based on a stated preference approach the data were collected via a choice experiment and were then used to estimate a main effects conditional logit model and a random parameter logit model with interaction effects and correlated preferences power outages are characterized by 6 attributes annual frequency duration peak or off peak announced or unannounced winter or summer and invoice impact all estimates have the expected sign the results are used to assess the marginal wtp wta for each of these attributes overall the outcome suggests that flemish households have heterogeneous preferences regarding power outage attributes and that due to a status quo bias only a relatively small share of them is willing to switch to a lower reliability level if this would be compensated by a bill discount

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

what do customers want from improved residential electricity services evidence from a choice experiment abstract improvements in customer satisfaction as well as product service quality represent a common objective of all businesses and electricity services are no exception using choice experiments and a mixed logit model this study quantitatively analyzes customers preferences and their marginal willingness to pay for improved residential electricity services the study provides an ex ante evaluation of customers acceptance of hypothetical electricity services according to the results customers consider the electricity bill and the electricity mix as the two most important attributes when choosing their electricity services customers are willing to pay 2 2 more in the average electricity bill an additional monthly electricity bill of krw 1 064 usd 0 96 for a significant increase in the share of renewable energy which is far less than the actual cost of achieving this renewable target therefore it is better to maintain the current electricity mix in principle and the renewable share should be gradually expanded instead of making a sudden change in the electricity mix in addition customers are willing to pay krw 6 793 usd 6 15 more to reduce blackouts once in a year and krw 64 year usd 0 06 year to reduce a minute of each blackout

individual preferences and the exponential growth bias abstract the exponential growth bias egb refers to individuals underestimation of the effects of exponential growth and has been shown to affect important financial decisions such as retirement savings we develop and test a novel experimental design to evaluate the magnitude of the egb based on multiple price lists our design simultaneously elicits the egb as well as subjects utility curvatures and time preferences allowing for non linear utility we structurally estimate the magnitude of the egb as about half as large as when linear utility is assumed these results shed light on the relationship between individual preferences and the egb

using conjoint analysis to quantify public preferences over the environmental impacts of wind farms an example from spain this paper focuses on the effect on people s utility of the potential environmental impacts of wind farm developments we report on research designed to provide insight into their preferences and we show how two alternative choice modelling techniques can be used to estimate them our results show that significant social costs in the form of environmental impacts can be associated with wind farm developments as relative environmental values are revealed by these methods it would be possible to develop wind farms in such a way that minimises the total social costs of the investment and which maximises its net benefits

using choice experiments to value the environment this paper we outline the choice experiment approach to environmental valuation this approach has its roots in lancaster s characteristics theory of value in random utility theory and in experimental design we show how marginal values for the attributes of environmental assets such as forests and rivers can be estimated from pair wise choices as well as the value of the environmental asset as a whole these choice pairs are designed so as to allow efficient statistical estimation of the underlying utility function and to minimise required sample size choice experiments have important advantages over other environmental valuation methods such as contingent valuation and travel cost type models although many design issues remain unresolved applications to environmental issues have so far been relatively limited we illustrate the use of choice experiments with reference to a recent uk study on public preferences for alternative forest landscapes this study allows us to perform a convergent validity test on the choice experiment estimates of willingness to pay

choice modelling approaches a superior alternative for environmental valuation in this paper we examine some popular choice modelling approaches to environmental valuation which can be considered as alternatives to more familiar valuation techniques based on stated preferences such as the contingent valuation method a number of choice modelling methods are consistent with consumer theory and its focus on an attribute based theory of value permits a superior representation of many environmental management contexts however choice modelling surveys can place a severe cognitive burden upon respondents and induce satisficing rather than maximising behavioural patterns in this framework we seek to identify the best available choice modelling alternative and investigate its potential to solve some of the major biases associated with standard contingent valuation we then discuss its use in the light of policy appraisal needs within the eu an application to the demand for rock climbing in scotland is provided as an illustration

discounting behavior a reconsideration we re evaluate the theory experimental design and econometrics behind claims that individuals exhibit non constant discounting behavior theory points to the importance of controlling for the non linearity of the utility function of individuals since the discount rate is defined over time dated utility flows and not flows of money it also points to a menagerie of functional forms to characterize different types of non constant discounting behavior the implied experimental design calls for individuals to undertake several tasks to allow us to identify these models and to several treatments such as multiple horizons and the effect of allowing for a front end delay on earlier payments the implied econometrics calls for structural estimation of the theoretical models allowing for joint estimation of utility functions and discounting functions using data collected from a representative sample of 413 adult danes in 2009 we draw striking conclusions assuming an exponential discounting model we estimate discount rates to be 5 6 on average this is significantly lower than all previous estimates using controlled experiments we also find no evidence to support quasi hyperbolic discounting or fixed cost discounting and only modest evidence to support other specifications of non constant discounting furthermore the evidence for non constant discounting while statistically significant is not economically significant in terms of the size of the estimated discount rates we undertake extensive robustness checks on these findings including a detailed review of the previous comparable literature

does it matter when a power outage occurs a choice experiment study on the willingness to pay to avoid power outages using a choice experiment survey the marginal willingness to pay wtp among swedish households for reductions in power outages is estimated the results from the random parameter logit estimation indicate that the marginal wtp increases with the duration of the outages and is higher if the outages occur during weekends and during winter months moreover the random parameter logit model allows us to estimate a sample distribution of wtp and we find a significant unobserved heterogeneity in some of the outage attributes given that households have negative welfare effects from outages it is important that policy makers consider these negative impacts on household utility when regulating the swedish electricity market

the willingness to pay by households for improved reliability of electricity service in north cyprus abstract this research examines households willingness to pay wtp for an improved electricity service households wtp is estimated using the payment ladder contingent valuation cv data from 350 in person interviews in north cyprus in order to avoid the cost of outages households are willing to incur a 13 8 increase in their monthly electricity bill a cost benefit analysis cba indicates that the annualized economic benefits of improved reliability of the electricity service would be approximately usd 35 6 million for the residential sector this figure is more than enough to finance the investments needed to completely eradicate any electricity outages in addition the fuel savings from substituting the generation of the new plants for the old plants would yield about usd 32 9 million per year in fuel savings hence a change from the current low reliability policy to one of providing a high quality service would yield an economic net present value to the residents of north cyprus of twice the investment costs or usd 173 3 million within five years

response bias in a conjoint analysis of power outages abstract a methodology is proposed for estimating status quo effects resistance to change and loss aversion willingness to pay is less than willingness to accept from consumer survey data conjoint data on israeli households attitudes to electricity outages reveal that both of these effects are pronounced and that they depend on the interviewees characteristics ordered conditional logit estimation indicates that while the estimates are rank sensitive the suggested methodology continues to be applicable finally the conjoint estimates are compared with those obtained by applying the method of contingent valuation

energy consumption in rural china a household model for three villages in jiangxi province abstract in china fuelwood and coal are the most important energy sources for rural households in poor areas along with population and economic growth excessive fuelwood collection is a major cause of deforestation burning coal contributes to environmental problems such as air pollution acid rain and greenhouse gas emissions the purpose of this article is to analyze factors determining choice of energy source and labor input into fuelwood collection in poor forest rich regions and to provide policy recommendations on ways to affect these choices to this end a nonseparable household model reflecting choices in labor allocation and energy demand of rural households is estimated from available data for three villages in a poor forest rich region in jiangxi province southeast china innovative aspects of this article are the analyses of factors driving household substitution between forest and non forest fuels and of dissimilarities in household responses under different market access conditions

risk aversion and incentive effects comment charles a holt and susan k laury 2002 develop an experimental design to determine the risk attitude of an individual they use their observations to argue that increased incentives appear to change risk attitudes leading to greater risk aversion popular utility functions that do not allow for such effects are therefore misspecified building on this finding they estimate a flexible utility function that characterizes their aggregate data well but that does not assume constant absolute or relative risk aversion the basic holt and laury 2002 hl design should become an important tool for the interpretation and design of experiments in which risk attitudes could play a role however their most important result showing the effect of scaling up the stakes of the lottery choice task is confounded by a possible order effect an order effect occurs when prior experience with one task affects behavior in a subsequent task the primary methodological contribution of experiments in economics is to enhance control ideally such control makes the explanatory variables of interest in this case scale orthogonal to other explanatory variables such as order allowing clearer inferences about behavior than one could get from field econometric data we argue that not controlling for order effects results in a misspecification of utility functions that is as important as that of scale the subjects in the hl design were given sequences of three or four tasks as shown in table 1 task 1 involved choices over lotteries with a baseline level of prizes which we will refer to as the 1 scale task 2 involved hypothetical choices over prizes with a scaled up level of prizes either 20 50 or 90 task 3 repeated task 2 but with choices that involved real payoffs task 4 was a return to the baseline task with real 1 prizes in some sessions subjects were not given task 2 or task 3 what could one infer from the comparison of measured risk attitudes in the 1 and 20 tasks in hl unfortunately any observed difference could be due either to the scale of the prizes involved or the task order or some combination of both thus the effect of scale is intrinsically confounded with the possible effect of task order this is a logical flaw in their design which

technological innovation and dispersion environmental benefits and the adoption of improved biomass cookstoves in tigrai northern ethiopia this paper empirically analyzes adoption and fuel savings efficiency of improved biomass cookstove technology using survey data from a cross section of 200 farm households from the highlands of tigrai northern ethiopia results indicate that these farm households are willing to adopt improved biomass cookstove innovations if this leads to economic savings moreover results suggest significant positive environmental externalities on a per household basis we found that adopters collect about 70 kg less wood and about 20 kg less dung each month the adoption of improved biomass cookstoves reduces harvest pressure on local forest stands assuming an average of 120 metric tons of biomass per ha we find the potential reduction in deforestation amounts to some 1400 ha per year an important saving further the reduced use of dung as a fuel has a positive impact on soil productivity in agriculture

exponential growth bias and household finance exponential growth bias is the pervasive tendency to linearize exponential functions when assessing them intuitively we show that exponential growth bias can explain two stylized facts in household finance the tendency to underestimate an interest rate given other loan terms and the tendency to underestimate a future value given other investment terms bias matters empirically more biased households borrow more save less favor shorter maturities and use and benefit more from financial advice conditional on a rich set of household characteristics there is little evidence that our measure of exponential growth bias merely proxies for broader financial sophistication what drives household financial decisions the canonical economic model assumes that consumers choose to consume borrow or save based on their preferences their expectations and the costs and benefits of borrowing and saving a growing body of work applies insights from psychology to enrich specifications of three of the model s key pieces preferences expectations and problem solving conditional on parameter values 1 in this paper we bring psychological evidence to bear on a fourth specification issue how consumers perceive the costs and benefits of borrowing and saving we begin by tying together existing and new evidence on these cost perceptions to show that most consumers err systematically when given information commonly available in the market on the saving side consumers display future value bias a systematic tendency to underestimate a future value given

woodfuels livelihoods and policy interventions changing perspectives in the 1970s it appeared that fuelwood use was growing rapidly and this could have major adverse impacts on the resource and poor users by the mid 1980s revised assessments indicated that there was less of a problem than had been foreseen and much less of a need for forestry interventions to maintain supplies as a result many of the latter were sharply scaled back additional information and analysis that has become available since the 1980s support the view that there is no need for large scale interventions devoted just to provision of fuelwood however declining access to supplies or markets can raise significant problems in some areas and for particular categories of user growing urban demand for charcoal can also cause local problems in particular in africa the potentials for appropriate forms of intervention are discussed

modeling the choice to switch from fuelwood to electricity implications for giant panda habitat conservation despite its status as a nature reserve wolong nature reserve china has experienced continued loss of giant panda habitat due to human activities such as fuelwood collection electricity though available throughout wolong has not replaced fuelwood as an energy source we used stated preference data obtained from in person interviews to estimate a random utility model of the choice of adopting electricity for cooking and heating willingness to switch to electricity was explained by demographic and electricity factors price voltage and outage frequency in addition to price nonprice factors such as voltage and outage frequency significantly affect the demand thus lowering electricity prices and increasing electricity quality would encourage local residents to switch from fuelwood to electricity and should be considered in the mix of policies to promote conservation of panda habitat 2002 elsevier science b v all rights reserved

social acceptance of renewable energy sources a review of contingent valuation applications abstract this paper presents a literature review addressing the public acceptance of renewable energy as a replacement for fossil fuels in electricity production this review was motivated by the global tendency for a substitution of conventional fuels by renewable energy sources res during the global financial crisis it studies research on the preferences and attitudes of local communities towards investments in renewable energy projects and their perception of the use of new energy technologies in their daily lives through various case studies worldwide an effort is made to identify the parameters that influence consumers energy behaviour together with their interest or lack thereof in the environmental impact of using fossil fuels to produce energy and their willingness to reduce it applications of contingent valuation are examined which are employed to analyse public attitudes towards the use of res for electricity production willingness to pay is observed to be correlated to socioeconomic characteristics including education interest in environmental issues and knowledge of res finally the profile of a typical green energy consumer and appropriate policy paths for the penetration of res into the energy market are outlined

misunderstanding savings growth implications for retirement savings behavior abstract people systematically underestimate exponential growth this article illustrates this phenomenon its implications and some potential interventions in the context of saving for retirement where savings grow exponentially over long periods of time experiment 1 shows that a majority of participants expect savings over 40 years to grow linearly rather than exponentially leading them to grossly underestimate their account balance at retirement experiment 2 demonstrates that this misunderstanding leads to underestimates of the cost of waiting to save which makes putting off saving more attractive than it should be finally experiments 3 5 show that highlighting the exponential growth of savings motivates both college students and employees to save more for retirement making clear to employees the exponential growth of savings before they make crucial decisions about how much to save may be a simple and effective means of increasing retirement savings

estimating individual discount rates in denmark a field experiment we estimate individual discount rates with respect to time streams of money using controlled laboratory experiments these discount rates are elicited by means of field experiments involving real monetary rewards the experiments were carried out across denmark using a representative sample of 268 people between 19 and 75 years of age individual discount rates are estimated for various households differentiated by socio demographic characteristics such as income and age our conclusions are that discount rates are constant over the 12 month to 3 year horizons used in these experiments and that discount rates vary substantially with respect to several socio demographic variables hence we conclude that it would be reasonable to assume constant discount rates for specific household types but not the same rates across all households

a downward spiral research evidence on the relationship between poverty and natural resource degradation abstract many observers have conceptualised the link between rural poverty and environment as a downward spiral with population growth and economic marginalisation leading to environmental degradation recent micro scale empirical research challenges this model showing striking heterogeneity in environmental management by the rural poor their success in adapting to environmental change and the efficacy of policies in influencing outcomes local endowments conditions affecting the adoption of resource conserving technologies and local institutions supportive of the poor are key factors that condition poverty environment interactions and outcomes in relation to agriculture the main strategies to jointly address poverty and environmental improvement are to increase poor people s access to natural resources enhance the productivity of poor people s natural resource assets and involve local people in resolving public natural resource management concerns research is needed to support these strategies particularly to explore poverty environment agriculture interactions develop technologies for poor farmers and partner with local communities for action research on policies and programmes

estimating time preferences from convex budgets experimentally elicited discount rates are frequently higher than what seems reasonable for economic decision making such high rates are often attributed to present biased discounting a well known bias of standard measurements is the assumption of linear consumption utility attempting to correct this bias using measures of risk aversion to identify concavity researchers find reasonable discounting but at the cost of exceptionally high utility function curvature we present a new methodology for identifying time preferences both discounting and curvature from simple allocation decisions we find reasonable levels of both discounting and curvature and surprisingly dynamically consistent time preferences jel c91 d12 d81 understanding and estimating time preferences is obviously of great importance to economists marketers and policy makers consumers decide how much to invest in savings education real estate and life insurance how much to diet exercise and smoke whether to marry when to have children and what to leave in their wills while there has been substantial research estimating time preferences using aggregate consumption data 1 the bulk of the effort has occurred in laboratory environments 2 among the many laboratory techniques employed recent studies have favored multiple price lists mpl with monetary payments 3 with mpls individuals are asked multiple times to choose between smaller payment amounts closer to the present and larger amounts further into the future the interest rate increases monotonically in a price list such that the point where an individual switches from preferring sooner payments to later payments carries interval

households willingness to pay for reliable electricity services in ghana abstract access to reliable electricity is important in increasing the living standards of households and promoting sustainable development however ghanaian households have had to grapple with frequent power outages and poor quality electricity services in recent times this study examines the factors influencing households willingness to pay for reliable electricity services in ghana using data collected from 950 households in the cape coast metropolitan area and the tobit regression technique it was revealed that monthly income prior notice on power outages business ownership separate meter ownership household size and education significantly affect willingness to pay for reliable electricity services on the average households were prepared to pay 44 percent gh 6 80 us 3 42 more relative to the mean monthly electricity bill in the sample to improve electricity services it is envisaged that the findings would be used by policy makers and utility companies to make electricity generation and distribution more sustainable and efficient

estimating the willingness to pay for reliable electricity supply a choice experiment study abstract this research examines households willingness to pay wtp for an improved electricity service households stated wtp is estimated using the choice experiment ce method the data used in the estimations come from 350 in person interviews conducted during the period 5 22 august 2008 in north cyprus compensating variation cv estimates for a zero outage scenario are calculated using the parameter estimates from the mixed logit ml model these are 6 65 ytl turkish lira per month 3 02 usd for summer and 25 83 ytl per month 11 74 usd for winter in order to avoid the cost of outages households are willing to incur a 3 6 and a 13 9 increase in their monthly electricity bill for summer and winter respectively the wtp per hour unserved is 0 28 ytl 0 13 usd for summer and 1 08 ytl 0 49 usd for winter a preliminary cost benefit analysis indicates that the annualized economic benefits are approximately 42 7 million ytl 19 4 million usd for the residential sector this would justify an investment in additional generation capacity of approximately 268 mw which is far more than that which is needed to eliminate the service reliability problem

choice experiment study on the willingness to pay to improve electricity services abstract modern forms of energy are an important vehicle towards poverty alleviation in rural areas of developing countries most developing countries households rely heavily on wood fuel which impacts on their health and socio economic status to ease such a dependency other modern forms of energy namely electricity need to be provided however the quality of the electricity service namely reliability is an important factor in reducing this dependency this paper discusses a choice experiment valuation study conducted among electrified rural households located in kisumu kenya in which the willingness to pay wtp to avoid power outages or blackouts was estimated a mixed logit estimation was applied to identify the various socio economic and demographic characteristics which determine preferences in reducing power outages among a household s users in conclusion several of the socio economic and demographic characteristics outlined in this paper were identified and can assist service differentiation to accommodate the diverse households preferences towards the improvement of the electricity service