modelling seasonality in residential water demand the case of tunisia this article proposes to model seasonal patterns of residential water demand using the techniques of seasonal integration and cointegration the methodology is applied to quarterly aggregate time series data for tunisia 1980 2007 applying the same increasing multi step pricing scheme in the whole country first a seasonal cointegration analysis demonstrates the relevance of a pricing policy that increases the size of the lower consumption block in summer second the nonseasonal cointegration analysis reveals a relatively high price elasticity for the highest consumption block therefore we also propose to increase the tariff progressivity to promote water savings this modified pricing scheme will help to achieve goals of environmental protection and social equity

estimating residential water demand under multi part tariffs using aggregate data using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average

long run water demand estimation habits adjustment dynamics and structural breaks this article examines a water demand equation for milan for the second half of the 20th century 1950 2001 we focus mainly on the effects of price and habits but also account for other factors in the demand for water such as climate income and productive activity allowing for trend break stationarity or nonlinear trend stationarity we find evidence against the unit root hypothesis for many time series based on this result standard cointegration analysis would not be appropriate therefore we adopt an alternative estimation and testing procedure we focus in particular on the so called bounds testing approach which can be applied irrespective of the level of integration of the variables and which can be a useful modelling strategy given that dynamics are important when estimating a water demand equation the main results are that long run price elasticity is higher than short run elasticity and that consumption habits are relevant we also find that both climate sectoral and technological modif

nominal income targeting in an open economy optimizing model abstract this paper presents simulation results regarding the performance of nominal income targeting a monetary policy rule that sets interest rates in response to deviations of nominal gdp growth from a target path the macroeconomic model is one in which agents solve dynamic optimization problems with rational expectations but in an environment with slow price adjustments in the present version consumption choices reflect habit formation and the economy is open to international flows of goods and securities when calibrated to quarterly us data the model s results suggest that nominal income targeting performs well in relation to inflation targeting and taylor rules

water and energy price impacts on residential water demand in copenhagen while water price effects on residential water demand have been studied for several decades the impact of energy prices does not seem to have received much attention in this paper a residential water demand function derived from a model of household production of final consumption goods taking water energy and an aggregate of other goods as inputs is estimated on pooled time series data we find negative energy cross price elasticities around 0 2 and water price elasticities in the order of 0 1 or smaller

perceived price in residential water demand evidence from a natural experiment abstract under complicated billing structures the price to which consumers respond remains inconclusive in this paper i exploit a quasi experiment to estimate a causal effect of price for residential water customers during the introduction of increasing block rates for a north carolina utility perceived price is identified through a billing anomaly in which changes in marginal and average prices move in opposite directions empirical results contribute evidence that residential water customers respond to average price average price elasticity estimates vary from 0 43 to 1 14 across the distribution of consumption in triple difference models with an estimate of 0 31 in the tightest bandwidth of regression discontinuity specifications

a note on price perception in water demand models a household s decision to acquire price knowledge is endogenous in the demand for utility services and may affect elasticities and consumption levels a simultaneous equation model with endogenous switching is developed to evaluate the effects of price

can poor consumers pay for energy and water an affordability analysis for transition countries low income households spend a substantial share of their income on utility services such as electricity heating and water the difficulty of these socially vulnerable consumers to absorb further price increases is often used as an argument against tariff reform however detailed quantitative information on the affordability of tariff adjustments for low income consumers is actually quite scarce much of the available information is based on households this paper takes a more detailed look at the affordability of electricity district heating and water for low income consumers in transition countries while the available data are incomplete the paper finds that affordability is a problem for low income consumers in most countries in particular in the water sector and in the commonwealth of independent states cis the affordability consequences of tariff reform ultimately depend on the speed of tariff adjustments relative to the growth in household income the level of tariffs needed for cost recovery the level of effective tariffs at the outset tariffs adjusted for non payment and the demand response to the tariff increase the paper finds that delaying tariff reform by a few years makes little difference to affordability constraints and may therefore not be an effective way to mitigate the social impact of utility reform

electricity demand estimates under increasing block rates using price variables calculated at observed consumption levels this study finds significant bias in ordinary least squares estimates of price elasticities of electricity demand the bias is most severe for specifications using observed average price the finding is important for future econometric work since this type of rate structure is becoming more common the evidence indicates that inappropriate use of ordinary least squares ols overestimates that rate structure premium effect on demand and may underestimate the marginal price elasticity the use of an instrumental variables technique applied to actual rate schedules proves consistent parameter estimates regardless of the rate structure 20 references 3 tables

on the specification of price in studies of consumer demand under block price scheduling using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average

valuing water supply reliability instead of creating water supply systems that fully insulate mankind from climate imposed water deficiencies it is possible that for municipal water systems a nonzero probability of water supply shortfall is efficient perfect water supply reliability meaning no chance of future shortfall is not optimal when water development costs are high designing an efficient strategy requires an assessment of consumer preferences pertaining to the reliability of water supply contingent valuations of both current and future shortfalls are reported the consistency of these measures is gauged using an expected utility model copyright 2000 oxford university press

privately operated water utilities municipal price negotiation and estimation of residential water demand the case of france this paper addresses the issue of price negotiation between a municipality and a private water utility operator and its implications for residential water demand estimation we use appropriate econometric procedures to estimate a water demand equation on a panel of french municipalities we find evidence that negotiated water price depends on municipality s characteristics causing endogeneity of price in the demand equation the impact of average household income housing and system features such as metering is investigated both on municipal consumption and price estimated price and income elasticities are significant and close to previous household level studies

revenue effects from changes in a declining block pricing structure block rate structures are used extensively in public utility pricing including residential electricity estimating price elasticities in this context is complicated by the resulting nonlinearity of the consumer s budget constraint this article

deregulation redux does mandating access to bottleneck facilities necessarily improve welfare we demonstrate that deregulation in the form of vertical separation of network components into natural monopoly and potentially competitive markets does not truly represent a lessening of regulatory burdens that is vertical separation is not synonymous with deregulation more competitors is not equivalent to more competition we assume a public interest regulator that is constrained to set a unit price that maximizes expected welfare subject to a break even constraint we show that under both symmetric and asymmetric information cases the information demands on the regulator of the vertically integrated system are no greater than those in the case of vertical separation

the econometrics of kinked budget constraints in the last several years a branch of applied econometrics has developed which is devoted to the development of techniques for the estimation of demand and other functions when the budget constraint is piecewise linear or kinky that is when the constraint consists of a number of segments joined together at kink points such constraints most frequently arise from government tax and transfer programs for example the federal income tax imposes a piecewise linear schedule by the use of constant marginal tax rates within brackets a problem analyzed by hausman 1981 the payroll tax in the social security system likewise generates a kinked schedule inasmuch as the marginal tax rate on earnings is zero above a certain earnings maximum federal and state transfer programs for the poor result in piecewise linear constraints because transfer benefits are taxed in the sense of a negative income tax as income rises and because that tax rate falls to zero at the kink point where an individual or family loses eligibility for the benefit altogether many government transfer programs impose additional nonlinearities by altering this tax rate by discrete amounts over the range of positive benefits as well but kinked constraints sometimes arise in nongovernment contexts a well known example being the block pricing schedule commonly set by utilities and volume discounting in general kinked budget constraints create two difficulties that have several interesting facets one difficulty is that changes in tax and transfer schedules can have unexpected effects that can be exactly the opposite in sign to those expected from economic theory examples of this phenomenon are given below the second difficulty that with which this paper is mostly concerned relates to the implications of kinked budget

targeting nominal income in a dynamic model the author analyzes the choice of monetary policy rule in a perfect foresight planning model maximizing agents plan their lifetime consumption decisions in the face of two rigidities first households hold money to aid trade second today s price level is inherited from past contracting decisions so that changes in nominal aggregate demand fall on output in the short run given these rigidities the central bank can set real balances in the short run and the author compares two mu percent rules his theoretical results suggest that the choice between fixed money growth and fixed nominal income growth rules is an empirical assessment that depends on the distribution of shocks to the economy copyright 1990 by ohio state university press

incentives to water conservation under scarcity comparing price and reward effects through stated preferences abstract focusing on two different european institutional contexts a stated preference approach is adopted to elicit the willingness to save water under three alternative incentive policies a water price increase monetary reward and symbolic prize in addition two water scarcity scenarios a critical and a regular scenario are devised to analyze how information on water scarcity moderates the effect of incentives empirical results show that users become sensitive to monetary incentives while they remain insensitive to non monetary ones when water is scarce batteries of pre tests on the sample and robustness checks on the results strengthen the reliability of our findings and partially circumvent concerns related to the use of a stated preference approach the study adds to the literature on the efficacy of economic incentives in the water sector and the role of local factors in explaining water users response

demand specification for municipal water management evaluation of the stone geary form to specify demand in most water allocation problems researchers face a tradeoff between flexibility and parsimony flexible forms are less constraining on elasticity estimates but require large parameter sets that tend to cause poor out of sample forecasts and computational difficulties using a five year panel of texas municipalities the parsimonious stone geary form yields estimated demand functions that are comparable to flexible form results the stone geary specification also provides an estimate of the portion of water use that may not be responsive to price and is useful in analysing price structures and designing conservation policies

a proposal for social pricing of water supply in cote d ivoire we consider the design of a nonlinear social tariff for residential water in cote d ivoire which is a case of a monopolistic private operator supplying a population of heterogeneous consumers the proposed optimal tariff includes an initial social block with a low unit price and higher consumption blocks with a monopoly pricing rule this optimal nonlinear tariff is calibrated using econometric estimates of a panel data residential water demand equation welfare changes associated with moving from the actual tariff to approximations of the optimal pricing system are computed under different tariff scenarios we find that gains in consumer welfare would outweigh losses in producer surplus in a majority of ivorian local communities

a discrete continuous choice approach to residential water demand under block rate pricing reply waldman is quite correct in noting that the microeconomic theory of block rate pricing in hewitt and hanemann hh 1995 is given for the general case of a k block rate structure whereas the econometric theory is largely confined to the case of exactly two blocks the extension in waldman to the more general case of k blocks is correct although the extension itself could be even more general if it addressed the nonnegativity of demand as is demonstrated below that no apparent attention was paid to the nonnegativity of demand in hh may be attributed to the fact that the need to do so was negated by a fortuitous assumption in the earlier work although that assumption that the errors are multiplicative and lognormally distributed was only maintained and not tested in hh i now estimate two models with the more common assumptions of linear demand and additive and normally distributed errors both with and without a modification for

alternate price specifications for estimating residential water demand with fixed fees using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average revenue as the price variable was shown to be an artifact of the unitary elastic identity created when monthly rate schedules contain a fixed fee when the fixed fee was purged from the data average price was not significant but marginal price remained significant in the preferred double log marginal price model estimated price elasticity was 0 3 and conservation programs had no significant effect on water use

on the performance of nominal income targeting as a strategy for monetary policy in a small open economy abstract there is a great deal of support for nominal income targeting in the literature on strategies for monetary policy in a closed economy framework is nominal income targeting equally attractive in a small open economy this paper compares nominal income targeting to alternative monetary policy rules in a stochastic macro model for a small open economy we find that both the weighting in the overall price level of the exchange rate and foreign prices and the elasticity of output supplied with respect to the real exchange rate are important factors in assessing the attractiveness of nominal income targeting in a small open economy where the size of both parameters is not negligible a rule targeting the overall price level may actually be preferred to nominal income targeting

long run study of residential water consumption the estimation of dynamic models and themeasure of long run effects arerare in residential water demand studies weshow in this paper that a dynamicmodel of water consumption can be derived froma structural optimisation programsolved by local communities thisnonlinear model is estimated on asample of french municipalities and is foundasymptotically equivalent to a dynamic panel data model that is linear in theparameters the latter includes anoriginal error component structure that allowsfor a flexible heterogeneity pattern including both the usual idiosyncraticeffect and an additional individualeffect affected by a multiplicative time varyingparameter as usual gmm estimators for panel data are not consistent inthis case we propose a new gmmprocedure that yields consistent and efficientestimates of short and long runprice elasticities respectively 0 26 and 0 40

an empirical survey of residential water demand modelling abstract the increased reliance on demand side management policies as an urban water consumption management tool has stimulated considerable debate among economists water utility managers regulators consumer interest groups and policymakers in turn this has fostered an increasing volume of literature aimed at providing best practice estimates of price and income elasticities quantifying the impact of non price water restrictions and gauging the impact of non discretionary environmental factors affecting residential water demand this paper provides a synoptic survey of empirical residential water demand analyses conducted in the last 25 years both model specification and estimation and the outcomes of the analyses are discussed

production efficiency and optimal pricing in intermediate good regulated industries abstract this paper reconsiders the relationship that exists between the production efficiency result of diamond and mirrlees and the ramsey rule specifically the paper considers a general equilibrium hierarchical structure of production one industry sells at least some of its output to another regulated industry a single regulatory agency must balance the budgets of all regulated industries in the aggregate so as to maximize the utility of a representative individual the ramsey rule always holds pricing rules however are far more complex the optimum may have some negative price cost margins and may not involve production efficiency

demand and distributional effects of water pricing policies abstract worldwide water scarcity threatens delivery of water to urban centers water pricing is often recommended to reduce demand in this paper demand and distributional effects of water pricing policies are examined in a block pricing model that is applied to the metropolitan region of sao paulo water demand functions are estimated using marginal and average price models based on monthly data for the period 1997 2002 price elasticities of water demand range between 0 45 and 0 50 and income elasticities between 0 39 and 0 42 for the current combined regressive progressive block price system the poor spend almost 4 2 to 4 7 of their income on water the rich only pay 0 4 to 0 5 of their income whereas they consume more than twice as much a progressive block price or an income dependent price system may result in a more equalized income distribution however the analysis shows that there is a trade off between a more equalized income distribution and revenues earned by the water company more pro poor pricing systems may result as well in lower revenues for the water company

household water demand seasonal elasticities a stone geary model under an increasing block rate structure using household level panel data from tucson arizona and a unique set of highly disaggregated control variables we estimate residential demand for water via a stone geary specification the stone geary functional form allows price elasticity of demand to vary with quantity consumed price and income and enables estimation of a threshold level of consumption below which demand is considered perfectly price inelastic an encompassing test of consumer price response reveals evidence favoring a lagged average price specification rather than one using lagged marginal price the estimated model also finds substantial seasonal variation in price elasticity and declining consumer price responsiveness

estimation of residential water demand with imperfect price perception using data from a household survey carried out in the french overseas territory of reunion we investigate the price of drinking water perceived by households faced with an increasing multi step pricing scheme to this purpose we use an improved version of the method introduced by shin 1985 to estimate the demand for residential water when consumers are imperfectly informed about their pricing schedule the empirical results suggest that reunion households underestimate the price of water and thus consume more than what is economically rational providing information to households about the marginal price of water may be an innovative means of inducing them to respond to pricing policies designed to promote water conservation

specification of block rate price variables in demand models using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average

the determinants of water connection and water consumption empirical evidence from a cambodian household survey using cross sectional household level data from seven provincial towns and one district in cambodia we estimate both an access to water network equation and a water demand equation we find that the connection elasticity with respect to the one off initial connection fee is 0 39 and the price elasticity of water demand for the connected households lies in a range between 0 5 and 0 4 the policy implication of this research is that development practitioners should consider a connection rather than a consumption subsidy scheme as it would stimulate increased access to clean water among all households including the poorest

targeting nominal income a note this paper compares nominal income and monetary targets in a standard aggregate demand aggregate supply framework if the desirability of policies is measured by their effect on the unconditional variance of output nominal income targeting is preferable if and only if the aggregate elasticity of demand for real balances is greater than one this is precisely the opposite of the condition that in bean 1984 is sufficient to make nominal income targeting preferable this points out the importance of specification of supply and of objective function in work on nominal income targeting this abstract was borrowed from another version of this item

price knowledge in household demand for utility services a household s decision to acquire price knowledge is endogenous in the demand for utility services and may affect elasticities and consumption levels a simultaneous equation model with endogenous switching is developed to evaluate the effects of price knowledge and other sources of heterogeneity results indicate informed households were more responsive to average and marginal price signals informed households also use less water but this is due to heterogeneity rather than price knowledge controlling for heterogeneity price knowledge actually increases monthly water usage the implications of accounting for differences in price knowledge in utility demand modeling and demand management policy are discussed

alternative nominal anchors in this paper the choice of an intermediate target for monetary policy is considered using a model that allows each alternative to be judged based on its welfare effects measured using a representative household s utility function the results show that nominal income targeting is preferable to money supply targeting since it provides an appropriate response to money demand shocks price level targeting dominates nominal income targeting however since it also provides an appropriate response to technology shocks in fact these results imply that price level targeting represents the optimal monetary policy

urban residential demand for water in the united states further discussion using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average

the econometrics of piecewise linear budget constraints a survey and exposition of the maximum likelihood method in this article maximum likelihood techniques for estimating consumer demand functions when budget constraints are piecewise linear are exposited and surveyed consumer demand functions are formally derived under such constraints and it is shown that the functions are themselves nonlinear as a result the econometric problems in estimating such functions are exposited and the importance of the stochastic specification is stressed in particular the specification of both unobserved heterogeneity of preferences and measurement error econometric issues in estimation and testing are discussed and the results of the studies that have been conducted to date are surveyed

determinants of residential water demand in germany abstract we econometrically analyze the impact of several economic environmental and social determinants for the per capita demand for water in about 600 water supply areas in germany besides prices income and household size we consider the effects of population age the share of wells housing patterns precipitation and temperature we also explore why current per capita residential water consumption in the new federal states is about 30 lower than in the old federal states since average cost pricing may cause an endogeneity problem we apply instrumental variable procedures in addition to single equation ordinary least squares but find no evidence that prices are endogenous our estimation results suggest that the price elasticity of water demand in germany is around 0 24 the income elasticity is positive decreases with higher income levels and is at least three times higher in the new federal states than in the old federal states current differences in prices and income levels explain about one third of the gap in residential water use between the two regions household size and the share of wells have a negative impact on per capita water demand and water use increases with age finally the findings provide some evidence that rainfall patterns rather than total rainfall affect water consumption while temperature appears to have no impact at all all outcomes are robust to a log log and two types of semi log specifications for the water demand function

controlling households drilling fever in france an economic modeling approach using primary data collected at the national and local levels in france this paper shows how water price increase initially intended to generate environmental benefits through reducing water use has produced economic incentives for households to drill their own garden boreholes the paper first presents the results of a national survey which identifies the increasing number of garden boreholes as an issue of concern in a majority of the french counties it then presents a microeconomic model which represents the households decision to construct a borehole the model is used to simulate the impact of various water pricing scenarios on tube well development and residential water demand at regional level the paper ends with a discussion of the social impact of emerging independent supply strategies

specialization and size of technological activities in industrial countries the analysis of patent data abstract the determinants and direction of the technological specialization of advanced countries are investigated in this paper using patent counts and citations as technology indicators during the 1980s international patenting increased more rapidly than the resources devoted to r d indicating a globalization of technology markets paralleled by a growing degree of sectoral specialization of countries innovative activities a clear cut inverse relationship between countries technological size measured by cumulative r d expenditure and degree of specialization has been found only large countries can afford to spread their activities across most technological fields while small and medium sized countries are to some extent forced to specialize in more narrow niches some methodological aspects in the use of patenting as an internationally comparable indicator are also discussed considerable differences emerged between patent specialization profiles in the internal and in external markets firms tend to protect their internal market through patenting also in fields where they do not excel at the international level leading to a smoother specialization profile

is all domestic water consumption sensitive to price control this paper presents a model of residential water demand based on the stone geary utility function which explicitly considers a threshold of water that is insensitive to price and a quantity that can adapt instantaneously to price changes first the threshold is assumed constant being then allowed to vary according to past levels of consumption a proxy for households water using equipment and habits a measure of the depreciation rate of habits is derived and the effectiveness of price and non price conservation measures are compared the results provide useful policy recommendations for the studied case of seville spain

inflation expectations and the stability properties of nominal gdp targeting ball 1999 uses a small closed economy model to show that nominal gdp targeting can lead to instability this paper extends ball s model to uncover the role inflation expectations play in generating this instability allowing inflation expectations to be formed by the more general mixed expectations process which encompasses ball s model we show that nominal gdp targeting is unlikely to lead to instability we further show that in ball s model where exact targeting causes instability that moving to inexact targeting restores stability

efficiency and equity in two part tariffs the case of residential water rates as first noticed by coase 1946 a standard result in utility regulation is that efficiency requires two part tariffs with marginal prices set to marginal costs and fixed fees equal to each customer s share of fixed costs residential water customers in france face marginal prices for water that average about 8 more than marginal costs under price elasticity estimates that are consistent with previous results in the literature efficiency costs represent around 8 million euros of welfare losses for 2008 even though the impact is fairly small current price schedules are an important pre existing distortion which should be considered when evaluating current taxes aimed at addressing external costs moreover efficiency gains from reformed tariffs could be used to fund water assistance programs focused on financially stressed households

the role of environmental factors in water utilities technical efficiency empirical evidence from spanish companies this article computes input specific scores of technical efficiency for a sample of water utilities located in the southern spanish region of andalusia in addition differences in efficiency between different operating environments are investigated concerning the debate about ownership and efficiency we find that privately owned companies outperform public utilities in their management of labour furthermore technical efficiency is found to be greater among firms located in highly populated areas and for utilities providing water services to tourist municipalities finally no empirical evidence supporting the greater technical efficiency of consortia of water utilities a managerial strategy strongly encouraged by regional politicians is found

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

water demand under alternative price structures we estimate the price elasticity of water demand with household level data structurally modeling the piecewise linear budget constraints imposed by increasing block pricing we develop a mathematical expression for the unconditional price elasticity of demand under increasing block prices and compare conditional and unconditional elasticities analytically and empirically we test the hypothesis that price elasticity may depend on price structure beyond technical differences in elasticity concepts due to the possibility of endogenous utility price structure choice observed differences in elasticity across price structures may be due either to a behavioral response to price structure or to underlying heterogeneity among water utility service areas

estimating the structure of industrial water demands the case of canadian manufacturing this study considers water use by canadian manufacturing firms the estimation of water demands is based on a detailed cross sectional survey of establishment level observations on water prices quantities and expenditures industrial water use is modeled as having four components intake treatment prior to use recirculation and discharge average values for the estimated own price elasticity for water intake range from 0 1534 to 0 5885 water recirculation is found to be a substitute for both water intake and water discharge this confirms that expanding the use of economic incentives e g effluent fees may be effective in encouraging firms to reduce their water use while increasing in plant recirculation

public pricing under imperfect competition abstract existing literature on second best pricing assumes that regulatory control encompasses all industries subject to distortion this paper extends the theory in a game theoretic framework to incorporate market power outside the regulated sector we find that in this situation price always exceeds marginal cost in the public firm and that the profit constraint for the public firm need not be binding in addition the existence of pricing distortions outside the regulated sector can actually increase welfare

comparing residential water demand estimates under decreasing and increasing block rates using household data using a new model formulation and data from a sample of colorado utilities we investigated the price specification controversy marginal price versus average revenue when estimating residential water demand the improved statistical fit using average

new classical macroeconomics a sympathetic account the essential ingredients of new classical nc macroeconomics are 1 adoption of the equilibrium approach to model construction 2 acceptance of the natural rate hypothesis 3 a belief in the superiority of policy based on rules and 4 a strong skepticism regarding the empirical relevance for macroeconomic issues of rational bubble phenomena recent keynesian analyses stressing the interaction of monopolistic competition with pricechange menu costs are not incompatible with the nc approach but have not been highly successful a nc policy strategy that recognizes current weaknesses in macroeconomic understanding is described and rationalized and an analytical basis for nc skepticism regarding bubbles sunspots etc is outlined

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

damage control productivity why econometrics matters cet article consiste d une part en une critique de l approche de lichtenberg et zilberman 1986 pour l explication de la surestimation habituelle de la productivite marginale des pesticides les auteurs montrent que l argument selon lequel les fonctions de production standard cobb douglas translog ne seraient pas adequates pour la modelisation de l action des pesticides sur les rendements agricoles n est vraisemblablement valide que dans des cas tres particuliers d autre part on propose une autre explication potentielle de cette surestimation de la productivite marginale des pesticides l existence de biais d heterogeneite tels qu ils ont ete mis en evidence par mundlak 1961 ces discussions theoriques sont illustrees a l aide d estimations et de tests realises dans le cadre de la methode des moments generalisee a partir d un panel issu du rica de 496 agriculteurs suivis de 1987 a 1990

estimating water demand under increasing block tariffs using aggregate data and proportions of users per block forming a strategy for the management of a water resource requires reasonable knowledge of the effects that alterations in the control variables bring on water use such knowledge of the determinants influencing domestic water demand constitutes an essential ingredient of a pricing policy for domestic water supply special attention should be paid to the effects of the level shape and frequency of the tariff since these are the variables that can be altered by the policy maker

perception of price when price information is costly evidence from residential electricity demand a bstract residential electricity consumption is an example of a good for which it is costly to determine marginal price since price changes with the quantity purchased according to multistep block rate schedules this paper investigates the effect of the price information problem on consumers price perceptions an alternative hypothesis of average price perception is tested against the marginal price postulate which assumes wellinformed consumers the model which includes a price perception variable allows the estimation of the price to which consumers actually respond the empirical results support the hypothesis that consumers respond to average price perceived from the electricity bill

the stabilizing properties of a nominal gnp rule the author examines the ability of a nominal gnp rule for monetary policy to stabilize output and inflation other regimes considered are a money rule an exchange rate rule a price level rule and discretion the rules compare favorably to discretion to the extent that a time consistent commitment to a nominal anchor is needed to eliminate an inflationary bias in the economy the choice among the four rules depends on the relative magnitudes of the disturbances considered supply shocks velocity shocks and exchange rate shocks the nominal gnp rule dominates the exchange rate and other rules for plausible parameter values copyright 1995 by ohio state university press

second best pricing of publicly produced inputs the case of downstream imperfect competition abstract efficient second best pricing is examined for a public enterprise facing two distortions a profit constraint and imperfect competition among some customer industries we suggest a measure of downstream industry distortion for the purpose of efficient pricing the pricing rule contains two opposing elements the shadow value of public profit and this measure of the downstream distortion whose sum determines whether the efficient second best input price is above or below marginal cost efficient pricing normally implies relative subsidization of imperfectly competitive downstream firms

residential demand for electricity under inverted block rates evidence from a controlled experiment block rate structures are used extensively in public utility pricing including residential electricity estimating price elasticities in this context is complicated by the resulting nonlinearity of the consumer s budget constraint this article estimates the demand for electricity under inverted block rates using data from a residential rate experiment the study provides an opportunity to obtain short run price elasticities in an experimental setting and to compare alternative estimators developed for nonlinear budget constraints elasticities of demand with respect to individual components of the block rate are developed using a modification of the structural maximum likelihood estimator

targeting nominal income an appraisal the practice of setting target growth rates for a year or more ahead for some measure of the mofiey supply is now followed by many industrialised countries however it has been suggested by a number of authors e g meade i978 in his nobel prize lecture tobin i980 in his retrospective on stabilisation policy brittan i98i that it would be more sensible to pursue targets for nominal income rather than the money supply meade for instance argues that controlling nominal income is in any case the ultimate goal of those who favour fixed monetary targets and that an excessive concentration on the means rather than the end is confusing to private agents and can lead to undesirable fluctuations in the demand for output when velocity shifts he goes on to advocate that nominal income targets should be linked to the development of wage fixing institutions designed to mimic competitive behaviour in this paper we examine the implications of such a proposal for the performance of the economy in the context of a simple stochastic macroeconomic model under rational expectations a contracting framework is adopted in which the wage is fixed in a state of uncertainty about future levels of demand and productivity the objective of the authorities is to minimise the divergence of output from its full information equilibrium level if labour supply is inelastic then it turns out that maintaining the level of nominal income is actually the optimal policy if labour supply is elastic nominal income targetry provides an optimal response to demand is lm shocks but a suboptimal response to productivity shocks however a sufficient condition for a nominal income target to be preferable to a fixed money supply target is that the price elasticity of aggregate demand be less than unity the paper concludes by examining the implications of pursuing target growth rates rather than levels it should be conceded at the outset that there are several pertinent issues not addressed such as the greater comprehensibility of nominal income targets to private agents or the possibility that nominal income targets may leave the authorities with too much discretion e g poole i980 the issue of labour market reform is also ignored this is an enormous subject which it would be impossible to do justice to here see for instance meade s own analysis of the problem in meade i982 such reforms might be expected to affect the parameters of the model nevertheless since changes in labour market practices are neither a precondition for nor a logical consequence of nominal income targets an independent analysis of the macrceconomic implications of the latter is still highly relevant

periodic cointegration representation and inference textabstractthis paper considers a new approach to the analysis of stable relationships between nonstationary seasonal time series the basis of this approach is an error correction model in which both long run effects and adjustment parameters are allowed to vary per season first we discuss theoretical arguments for such a periodic error correction model we define periodic cointegration and compare this to the concept of seasonal cointegration next we analyze statistical inference in the periodic error correction model a sequential procedure is proposed consisting of a test for periodic cointegration an estimator of the cointegration parameters and adjustment coefficients and a class of tests for the hypothesis that some of the parameters are constant over the seasons the finite sample behavior of the proposed test statistics is analyzed in a limited monte carlo exercise we conclude the paper with an application to a model of aggregate swedish consumption

the econometrics of panel data handbook of theory and applications preface 1 formulation and estimation of econometric models for panel data m nerlove p balestra part i linear models 2 introduction to linear models for panel data p balestra 3 fixed effect models and fixed coefficient models p balestra 4 error components models l matyas 5 random coefficients models cheng hsiao 6 linear dynamic models p sevestre a trognon 7 simultaneous equations j krishnakumar 8 panel data with measurement error e biorn 9 specification issues b h baltagi appendix matrix algebra for linear models part ii nonlinear models 10 introduction to nonlinear models c gourieroux 11 logit and probit models cheng hsiao 13 incomplete panels and selection bias m verbeek t nijman 14 pseudo panel data m verbeek 15 point processes j p florens d fougere part iii selected applications introduction to the applications z griliches 16 dynamic labour demand models g bresson f kramarz p sevestre 17 econometric models of company investment r blundell s bond c meghir 18 consumption dynamics and panel data a survey j m robin 19 estimation of labour supply functions using panel data a survey f laisney w pohlmeier m staat 20 individual labour market transitions d fougere t kamionka 21 modelling companies divident policy using account panel data j f malecot 22 software review p blanchard index

price and income elasticities of residential water demand a meta analysis this article presents a meta analysis of variations in price and income elasticities of residential water demand meta analysis constitutes an adequate tool to synthesize research results by means of an analysis of the variation in empirical estimates reported in the literature we link the variation in estimated elasticities to differences in theoretical microeconomic choice approaches differences in spatial and temporal dynamics as well as differences in research design of the underlying studies the occurrence of increasing or decreasing block rate systems turns out to be important with respect to price elasticities the use of the discrete continuous choice approach is relevant in explaining observed differences

instrumental variables approach to rural water service demand interest in empirical studies of the demand for goods sold through discrete pricing structures has grown since nordin suggested a modification of taylor s demand model 24 29 the bulk of early empirical research centered on residential electricity demand however econometric studies of water demand have proliferated in recent years some articles have been concerned in part with the proper theoretical specification of demand equations incorporating block rate pricing schedules taylor specified price as being composed of the marginal price associated with the block in which consumption occurs and an average price 29 nordin modified taylor s specification by demonstrating utility maximizing consumers with perfect information respond to marginal price along with a lump sum income effect associated with intramarginal prices and price schedule breakpoints 24 there is a potential problem in the estimation of demand for goods sold through block rate pricing schemes because of the possibility of correlation between price variables and the error structure 29 there are then two issues associated with the study of demand for goods sold under discrete pricing mechanisms the first issue is whether if consumers are aware of block pricing structures and respond to marginal price and the lump sum income change or rate premium or are aware of only total spending and total consumption and respond to an average price 11 5 9 26 the second issue is the choice of estimating technique 4 14 20 31 25 these two issues are not unrelated since empirical validation of consumer behavior

effect of price information on residential water demand microeconomic theory predicts that people decrease consumption when price increases the magnitude of the effect depending on price elasticity the law of demand however implicitly assumes that consumers know prices an assumption that is not always satisfied in markets with ex post billing when prices are not transparent elasticity estimates are potentially lower than their full information potential evidence of low price elasticity abounds in residential water demand studies limiting the effectiveness and desirability of using price signals as a conservation tool it is hypothesized that resident s sluggish response to price is partly due to the absence of price information on water bills differences in the informational content of bills are documented for the first time on the basis of sample bills collected from 383 utilities across the usa a standard aggregate water demand model is augmented with qualitative variables describing differences in billing information allowing such variables to a

regulatory preferences and two part tariffs the case of electricity the purpose of this paper is to develop and demonstrate a method for deriving and testing regulatory preferences within and across customer classes and to assess the impact of these preferences on price structures and regulatory effectiveness in the electric utility industry the method extends a technique described in both nelson and ross for uncovering interclass preferences in a uniform price framework 24 33 34 by employing a two part tariff framework the extension enables the derivation of both interclass and intraclass preferences intraclass preferences can be derived in a two part tariff framework because regulators can discriminate not only between customer classes as with uniform prices but also within a customer class two part tariffs are also introduced because actual price structures in the electric utility industry are better approximated by two part tariffs than by uniform prices models of optimal two part tariffs particularly those of schmalensee and sherman and visscher are extended to allow regulatory preferences to vary across and within heterogeneous customer classes 36 37 13 27 11 25 19 18 22 2 these variable preferences are incorporated into a weighted social surplus function which regulators are assumed to maximize given this model of regulatory behavior preference weights can be derived for the electric utility industry with information on the markups of both per unit prices over marginal costs of kwh output and fixed charges over the marginal costs of customer connection and on output and connection demand elasticities

measuring the income elasticity of water demand the importance of publication and endogeneity biases we present the first study that examines the effects of publication selection in the literature estimating the income elasticity of water demand paradoxically more affected by publication selection are the otherwise preferable estimates that control for endogeneity attempting to correct simultaneously for publication and endogeneity biases we find that the mean underlying elasticity is approximately 0 15 or less the result is robust to controlling for more than 30 characteristics of the estimates and accounting for model uncertainty the differences in the reported estimates are systematically driven by differences in the tariff structure regional coverage data granularity and control for temperature

estimation of the effects of price on apartment water demand using cointegration and error correction techniques abstractwater price is a key instrument in regulating water demand in the residential sector many empirical studies have assessed the effects of price through quantifying the price elasticity of water demand however most of these studies have mainly focused on the single family housing rather the multifamily housing an in depth understanding of the price elasticity of multifamily housing water demand is paramount for water planners in order to properly manage water use in the fast growing intensive housing developments in urban areas this study investigates both the long term and short term price elasticities of water demand in the residential apartments in auckland central city using 6 years of monthly time series data the price elasticities were estimated through cointegration and error correction methods the results showed that the price elasticities of water demand were 0 14 and 0 12 in the short term and the long term respectively the price is inelastic yet negative and statistically sign

analysing rationing policies drought and its effects on urban users welfare analysing rationing policies during drought the aim of this paper is to study the impact on consumers of rationing policies implemented during water shortages water scarcity gives rise to the need for rationing and various methods including supply cutoffs can be used a model is devised to quantify the welfare losses associated with qualitive and quantitive restrictions based on virtual prices and using the consumer surplus as a welfare measurement welfare variations for different users have been calculated to achieve the aim information relative to seville spain has been used analysing the drought period that took place in the first half of the 1990s it has been possible to observe the main source that led to welfare losses for each kind of user

evidence on the specification of price in the study of domestic water demand the development of lakefront property in northern wisconsin has prompted in several towns minimum frontage zoning stricter than the state standard such zoning generates an economic loss by constraining development development effect and an economic

industrial companies demand for electricity evidence from a micropanel abstract the paper presents a micro econometric analysis of industrial companies demand for electricity previous studies on electricity consumption in the industrial sector have relied on aggregate data or cross section observations here we present an econometric study on electricity demand based on a panel of 2949 danish companies followed from 1983 to 1996 it is found that estimators of electricity demand that take account of the panel structure fixed effect models yield considerably lower price and production elasticities compared to estimators that do not like cross section models it is also investigated how various company characteristics like size type of industrial sub sector and electricity intensity in production influence price and production elasticities it appears that companies with a high electricity intensity also have a high own price elasticity

nominal income targeting versus money growth targeting in an endogenously growing economy abstract we find that local indeterminacy more easily emerges under a regime of nominal income targeting both targeting regimes are equally effective in influencing economic growth and inflation the results thus favor money growth over nominal income as a nominal anchor

targeting nominal income a closer look abstract i derive conditions under which the monetary authority should target nominal spending the relevant spending target is a weighted average of income and consumption despite sticky nominal wages under optimal policy the economy behaves as if all markets clear

pareto efficient international taxation this paper analyzes pareto efficient international tax regimes because every country faces its own national budget constraint the diamond mirrlees production efficiency theorem which underlies key tenets of policy advice in international taxation the desirability of destination basis for commodity taxation of the residence principle for capital income taxation and of free trade does not apply the paper establishes conditions relating to the availability of explicit or implicit devices for reallocating tax revenues across countries under which production efficiency is nevertheless desirable and characterizes the precise ways in which pareto efficient international taxation may require violation of established tenets

monetary policy rules targets and shocks the proper conduct of monetary policy is now once again wide open to discussion an immediate practical controversy concerns the role of central banks in recovery from the world depression underlying that debate are some unresolved fundamental issues regarding the responsibilities goals targets and operating procedures of central banks monetarism won the hearts and minds of many economists and most central bankers in the 1970s now it seems to be losing adherents and influence partly because it is blamed for the severe depression partly because regulatory institutional and technological changes have altered the meanings and velocities of monetary aggregates last summer chairman volcker and his federal reserve colleagues suspended their monetarist targets to almost universal relief the severity of the recession the international debt crisis and the pace of change in financial structure were all good reasons it is doubtful though possible that money stock targets will regain their previous status if not what philosophy of monetary control what framework for the conduct of policy will replace them a host of monetary architects are ready to fill the vacuum some would restore the gold standard or make paper money convertible into other commodities some would replace intermediate monetary aggregates with other targets the monetary base nominal gnp or final sales total domestic credit price indexes or their rates of change exchange rates some advocate irrevocable commitment to announced

urban water demand with periodic error correction monthly demand for publicly supplied water to u s residences and businesses is estimated from a 10 year panel of 167 cities a periodic error correction model integrates monthly annual and long run time scales statistical consistency is validated by unit root tests adapted to the monthly frequency water and wastewater price elasticity of demand is estimated by sector calendar month and time horizon

are bilateral remittances countercyclical by putting together a relatively large data set on bilateral remittances of emigrants this paper is able to shed light on the important hypothesis of smoothing the smoothing hypothesis is that remittances are countercyclical with respect to income in the worker s country of origin the recipient of the remittance while procyclical with respect to income in the migrant s host country the sender of the remittance the econometric results confirm the hypothesis this affirmation of smoothing is important for two reasons first it suggests that remittances should be placed on the list of criteria for an optimum currency area second it brings into doubt plans by governments in some developing countries to harness remittances for their own use in that government spending in these countries generally fails the test of countercyclicality which remittances pass

residential water demand in the northwest of spain a panel of monthly aggregate data from the northwest of spain is used to estimate domestic water demand functions under linear and non linear tariffs price billing climatic and sociodemographic variables are used as explanatory variables the use of intraannual data constitutes a relevant contribution in the european context overall marginal price elasticity estimates lie between 0 12 and 0 17 summer only elasticities and elasticities associated with uses beyond the effectively free allowances seem significantly higher climatic variables significantly affect monthly use although probably less than in other wealthier and drier areas domestic water use appears to be a normal good

optimal departures from marginal cost pricing focuses on departures from marginal cost pricing optimal allocation or resources level of tax revenue that will be collected by the government theorems developed for resource allocation ebsco