note on the open loop von stackelberg equilibrium in the cartel versus fringe model one of the ways to model the supply side of the world oil market is by means of the cartel versus fringe model and to employ the open loop von stackelberg equilibrium concept this note shows that the equilibrium as presented in the literature does not satisfy the optimality conditions for the open loop equilibrium the authors show furthermore that in contrast with the prevailing view the equilibrium can display discontinuous price trajectories copyright 1992 by royal economic society

reserve and land prices with exploration under uncertainty abstract arrow and chang j econom environ manag 9 1 10 1982 analyze an exploration extraction model with uncertainty about the distribution of deposits reserve prices do not exhibit any rising trend when the unexplored land area is big but in order to know what happens when the unexplored area is smaller a probabilistic analysis not yet performed ibid p 10 is required their conjecture of a rising trend at less than the discount rate is confirmed however land prices can be expected to grow faster than reserve prices which helps discriminate between arrow and chang s and other rationalizations of the failure of resource prices to rise at the discount rate

why and how fdi stocks are a biased measure of mne affiliate activity many international business ib studies have used foreign direct investment fdi stocks to measure the aggregate value adding activity of multinational enterprises mne affiliates in host countries we argue that fdi stocks are a biased measure of that activity because the degree to which they overestimate or underestimate affiliate activity varies systematically with host country characteristics first most fdi into countries that serve as tax havens generate no actual productive activity thus fdi stocks in such countries overestimate affiliate activity second fdi stocks do not include locally raised external funds funds widely used in countries with well developed financial markets or volatile exchange rates resulting in an underestimation of affiliate activity in such countries finally the extent to which fdi translates into affiliate activity increases with affiliate labor productivity so in countries where labor is more productive fdi stocks also result in an underestimation of affiliate activity we test these hypotheses by first regressing affiliate value added and affiliate sales on fdi stocks to calculate a country specific mismatch and then by regressing this mismatch on a host country s tax haven status level of financial market development exchange rate volatility and affiliate labor productivity all hypotheses are supported implying that fdi stocks are a biased measure of mne affiliate activity and hence that the results of fdi data based studies of such activity need to be reconsidered

distributional and efficiency impacts of increased us gasoline taxes we examine the impacts of increased us gasoline taxes in a model that links the markets for new used and scrapped vehicles and recognizes the consider able heterogeneity among households and cars household choice parameters derive from an estimation procedure that integrates individual choices for car ownership and miles traveled we find that each cent per gallon increase in the price of gasoline reduces the equilibrium gasoline consumption by about 0 2

imperfect competition in the international energy market a computerized nash cournot model this paper describes the conceptual structure properties and solution approach of a computerized model of the international energy market the model treats energy producers as players in a multistage noncooperative game the goal of each player or cartel of players is assumed to be maximization of discounted profit subject to technical political and resource constraints the model calculates that collection of intertemporal extraction and price paths from which a player can unilaterally deviate only at a loss the open loop nash equilibrium the model integrates the theory of exhaustible resources due to hotelling and the theory of oligopoly due to nash and cournot although useful as a teaching device to illustrate theoretical results its main function is to facilitate analysis of real world resource problems the model is flexible allowing the user to specify not only cost demand and reserve information but also assumptions about who belongs to what coalition two shortcomings deserve note t

natural resource economics under the rule of hotelling abstract natural resource stocks held in situ are physical assets equilibrium in the assets market requires that their rates of return be such that their owners are just willing to hold on to them rather than invest elsewhere i discuss a number of factors relating to the evolution of extraction costs to the durability of the resource to market structure and to uncertainty that are important in correctly characterizing the rate of return on holding exhaustible natural resource stocks the emphasis is put on how those factors can potentially help bridge the gap between the basic hotelling s rule of natural resource exploitation and the historical behaviour of the flow price of a number of resources i also highlight some theoretical and empirical issues that need further attention

a note on uncertainty and the hotelling rule abstract in this paper we derive the hotelling rule of optimal natural resource depletion modified to account for uncertainty in rates of return it is shown that in the presence of risk aversion the rule implies that the expected equilibrium rate of increase of net resource price must equal the expected rate of interest if and only if there exists a zero covariance between the marginal utility of consumption and the difference between the rate of net price increase and the rate of interest the sign of this covariance is an empirical question as an example illustrates

a decomposition of the price and income elasticity of the consumer demand for gasoline the authors specify and estimate a model of the short run demand for gasoline which allows them to decompose a consumer s gasoline demand elasticities into miles driven and driving efficiency components their model is estimated using detailed household survey data which allows direct focus on the short run holding both the household s automobile stock and demographic profile fixed among the most interesting results are 1 the data allow interesting insights to be drawn into the interrelationship between these important variables and household behavior with respect to gasoline consumption miles driven and driving efficiency 2 the gasoline demand behavior of one car and multi car households differ significantly from each other evaluated at overall sample means one car households have higher in absolute value price elasticites for gasoline miles driven and fuel efficiency demand conversely multi car households have higher in absolute value total expenditure elasticities for each category 3 for both one car and multi car households roughly 75 of the estimated price elasticity and roughly 80 of the estimated total expenditure elasticity of gasoline demand stem from the miles driven component the estimated fuel efficiency elasticities though smaller than their standard errors indicate that households respond to changes in prices and total expenditure levels not only by changing the number of miles theymore drive but also by changing the efficiency with which they drive them 23 references 3 tables less

cartel contract duration empirical evidence from inter war international cartels a formal cartel organization sets up a multilateral relationship between firms in a given industry while standard contracting literature has studied bilateral monopoly relationships in detail there are horizontal relationships like cartels that also have contractual aspects to shed light on how these contracts work this paper takes a sample of legal formal cartel contracts and examines their structure and durability borrowing from industrial organization theories and transaction cost theories the empirical model tests for the importance of demand uncertainty and cartel organizational characteristics in determining cartel contract duration the results show that the more uncertain the environment within which the cartel operates the shorter the expected cartel duration other industry structure characteristics and cartel organization variables included in the empirical model have a much weaker influence on duration copyright 2005 oxford university press

extracting information or resource the hotelling rule revisited under asymmetric information we characterize the optimal extraction path when a concessionaire has private information on the initial stock of resource under asymmetric information a virtual hotelling rule describes how the resource price evolves over time and how extraction costs are compounded with information costs along an optimal extraction path in sharp contrast with the case of complete information elds which are heterogeneous in terms of their initial stocks follow di erent extraction paths some resource might be left unexploited in the long run as a way to foster incentives the optimal contract may sometimes be implemented through royalties and license fees with a market of concessionaires asymmetric information leads to a virtual her ndahl principle and to a new form of heterogeneity across active concessionaires under asymmetric information the market price converges faster to its long run limit exhibiting more stability

economic reforms fdi and economic growth in india a sector level analysis summary booming foreign direct investment fdi in post reform india is widely believed to promote economic growth we assess this proposition by subjecting industry specific fdi and output data to granger causality tests within a panel cointegration framework it turns out that the growth effects of fdi vary widely across sectors fdi stocks and output are mutually reinforcing in the manufacturing sector whereas any causal relationship is absent in the primary sector most strikingly we find only transitory effects of fdi on output in the services sector however fdi in the services sector appears to have promoted growth in the manufacturing sector through cross sector spillovers

temporary natural resource cartels abstract we analyze the behavior of a nonrenewable resource cartel that anticipates being forced at some date in the future to break up into an oligopolistic market in which its members will then have to compete as rivals under reasonable assumptions about the value function of the individual firms in the oligopolistic equilibrium that follows the breakup we show that the cartel will then produce more over the same interval of time than it would if there were no threat of dissolution and that its rate of extraction is a decreasing function of the cartel s life that there are circumstances under which the cartel will attach a negative marginal value to the resource stocks in which case the rate of depletion will be increasing over time during the cartel phase that for a given date of dissolution the equilibrium stocks allocated to the post cartel phase will increase as a function of the total initial stocks whereas those allocated to the cartel phase will increase at first but begin decreasing beyond some level of the total initial stocks

elasticities of transport fuels at times of economic crisis an empirical analysis for spain abstract this paper provides an updated calculation of the price and income responsiveness of spanish consumers of transport fuels with an explicit exploration of the effects of the recent economic crisis we examine separate gasoline and diesel demand models using a set of estimators on a panel of 16 spanish regions over the period 1999 2015 the paper confirms the persistence of low own price elasticities both for diesel and gasoline in the short and long runs it also shows that the crisis of 2008 2013 slightly increased the price elasticity of demand for transport fuels with a higher effect on diesel than on gasoline by contrary the crisis slightly reduced the income elasticity of transport fuel demand given the intensity and length of the economic recession in spain the results of this paper may be useful to anticipate the effects of domestic public policies that impact transport fuel prices as well as to advance some of the potential consequences of crises elsewhere

optimal pricing use and exploration of uncertain natural resource stocks abstract units of natural resources to be called mines are assumed distributed over an unexplored territory according to a poisson process in space at any moment total reserves and unexplored land are given society can determine the rate of consumption and the rate of exploration reserves are drawn down by consumption and increased by discoveries made during exploration the amount of unexplored land is decreased by exploration at any moment the payoff of society is a concave function of consumption less a linear function of exploration with future payoffs discounted optimal policies are considered and in particular it is shown for a large amount of unexplored land the shadow prices of reserves and of unexplored land move in random cycles but show only a slight upward tread thereby casting some light on the failure of mineral prices to rise at the market rate of interest

on comparing monopoly and competition in exhaustible resource exploitation abstract it is widely believed that exhaustible resource monopolies do not enjoy as much market power as standard non resource monopolies and may even produce in a socially optimal way we argue that this paradoxical result arises from an inappropriate comparison methodology when similar assumptions are applied to the resource and the conventional cases we show that the resource monopoly behaves as expected i e restricts supply

what ails the european union s emissions trading system abstract the european union has adopted economists idea of curbing carbon emissions by establishing markets where bankable emissions allowances can be traded implicit in proofs that cap and trade minimizes the expected discounted cost of capping emissions however is that the regulator not intervene once the market is established otherwise market participants encounter uncertainties beyond what a social planner faces this paper discusses the equilibrium that results when private agents bank tradable allowances in the face of ongoing risk of future regulatory intervention and shows that the cap will be achieved at unnecessarily high cost even if no regulatory intervention actually occurs evidence that such risks are currently distorting eu ets comes from the depressed current spot price from the findings of schopp and neuhoff 2014 that speculators require multiples of the riskless rate of interest to bank permits and from the sensitivity of prices to votes and announcements about proposed future regulatory changes

hotelling confronts capm a test of the theory of exhaustible resources a model of pricing of natural resource commodities that integrates financial and product markets is derived and tested the model unifies two strands of the economic and financial literature one that builds on the hotelling model of pricing of exhaustible resources and the other that extends the capital asset pricing model of pricing risky assets tests of the predictions make use of a cost function that was estimated from a panel of small canadian copper mines young 1992 the authors tests fail to reject the theoretical restrictions that are implied by the hotelling capital asset pricing model

variable long term trends in mineral prices the ongoing tug of war between exploration depletion and technological change abstract this paper explores the use of low frequency band pass filters for describing long run trends in real mineral commodity prices this approach has the advantage of allowing long run trend rates to evolve gradually over time rather than assuming that they are constant perhaps with occasional structural breaks over time this is a flexible way of capturing the ongoing tug of war between exploration depletion and technological change over 100 mineral and commodities stretching back to the late 19th or early 20th century are considered the variety of lr trends is astonishing but very few increase monotonically contrary to the prediction of the basic hotelling model some decline monotonically as predicted by prebisch and singer some have the u shaped pattern predicted by pindyck 1978 heal 1981 and slade 1982 others have changed direction up to three times in the period since 1900 the tug of war continues with exhaustion nowhere in sight

nonrenewable resource scarcity nonrenewable resource theory often is summarized by hotelling s rule this paper reviews theoretical extensions and empirical investigations of resource extraction models observed data are often inconsistent with the hotelling rule suggesting that other characteristics of nonrenewable resource supply including exploration heterogeneous ore quality technological progress and capital investment are important determinants of the dynamic behavior of resource prices given the persistent recurrence of concern about nonrenewable resource scarcity measures of nonrenewable resource scarcity and the empirical evidence for the time trends of those measures are reviewed finally the implications of nonrenewable resource scarcity for economic growth are examined

natural resource prices will they ever turn up abstract natural resource theory predicts that natural resource rents should increase over time however technical progress in resource extraction environmental constraints or great natural abundance could result in stagnant or declining product prices thus there is no theoretical reason to believe that product prices will rise in the near future the prediction of product prices by time series methods is shown to depend critically upon whether the series are modeled as difference or trend stationary dickey fuller and lagrange multiplier tests are used to show that the series are difference stationary long and short sample series are tested trend stationary modeling strongly predicts rising resource prices the result from difference stationary modeling is that there is only a weak supposition that natural resource prices will rise

testing the assumptions and predictions of the hotelling model in this paper we empirically examine whether the assumptions and predictions of the hotelling model are consistent with patterns observed in data we consider nonlinear functional forms for the extraction cost and resource demand to develop an empirical hotelling model with technological progress and stock dependent extraction costs using panel data on fourteen nonrenewable natural resources to estimate this empirical hotelling model we get qualitatively different results as compared to the related literature we find evidence of stock dependent extraction costs for most resources there is no evidence against the linearity of the optimal extraction rate in the resource stock for almost all resources studied furthermore the hotelling model may sustain a zero long run growth rate in resource prices these results depend on whether firms use different extractive technologies or whether the structural break observed on resource prices is taken into account

strong time consistency in the cartel versus fringe model due to developments on the oil market in the 1970s the theory of exhaustible resources was extended with the cartel versus fringe model to characterize markets with one big coherent cartel and a large number of small suppliers called the fringe because cartel and fringe are leader and follower the von stackelberg solution concept is appropriate for the supply side of this market the solution for the cartel versus fringe model presented in the previous literature proved to be time inconsistent for a large plausible range of values for extraction costs and initial reserves this paper provides a strongly time consistent solution for the cartel versus fringe model

a theory of oil igopoly cournot equilibrium in exhaustible resource markets with fixed supplies the emergence of an effective and powerful cartel in the international petroleum market has stimulated considerable effort among economists to develop models of pricing and supply behavior for this industry 2 this modeling task poses two basic difficulties first as in the standard oligopoly problem one must characterize the behavior of several sellers in a market aware of each other and of their effect on market price second there is here the added difficulty of treating the explicitly intertemporal nature of suppliers decision wherein a limited stock must be optimally allocated over time this paper studies the implications of the simplest non trivial postulates about these two aspects of the problem it is assumed that suppliers are non cooperative cournot nash players each of whom is imagined to select an optimal supply strategy taking as given the strategies of the others moreover it is hypothesized that the feasible strategies are limited to open loop paths chosen at the initial date to maximize the present value of profits in light of the paths of supply which the others have chosen 3 these basic postulates together with a few technical assumptions concerning the structure of resource demand permit one to demonstrate the existence of at least one non cooperative equilibrium concerning thisequilibrium we show that 1 the average and marginal return on resource stocks is inversely related to the size of a player s initial endowment 2 aggregate production decreases over time until all stocks are exhausted while firms with smaller stocks exhaust their supplies no later than firms with larger stocks do 3 the present value of price net of extraction cost declines over time 4 industry production maximizes a weighted average of intertemporal consumer s surplus and producers profits

on the profitability of production perturbations in a dynamic natural resource oligopoly abstract static oligopoly analysis predicts that if a single firm in cournot equilibrium were to be forced to marginally contract its production its profits would fall on the other hand if all the firms were simultaneously forced to reduce their production thus moving the industry towards monopoly output each firm s profit would rise we show that these very intuitive results may not hold in a dynamic oligopoly such as a nonrenewable natural resource oligopoly where the exogenous constraint would take the form of a contraction of the firm s output path over some fixed interval of time there are situations where a firm will gain from being the lone firm constrained in this way and cases where each firm will lose if all the firms in the industry are so constrained thus exactly reversing the conclusions obtained from purely static analysis

2 00 gas studying the effects of a gas tax moratorium there are surprisingly few estimates of the effects of sales taxes on retail prices especially at the firm level we consider the temporary suspension and subsequent reinstatement of the gasoline sales tax in illinois and indiana following a price spike in 2000 earlier laws set the timing of the reinstatements providing plausibly exogenous changes in the tax rates using a unique dataset of daily prices at the gas station level 70 of the tax suspension is passed on to consumers in the form of lower prices while 80 100 of the tax reinstatements are passed on to consumers some evidence suggests that these short run pass through estimates are smaller near the state borders with the tax reinstatements associated with relatively higher prices up to an hour s drive into neighboring states

the liberalization of retail services in india summary despite the recent controversy about opening up the distribution sector to foreign retailers there is political will that remains in favor of pushing through reforms in india in this paper we quantify the economic impact of the removal of barriers to foreign investment in multi brand retailing on different stakeholders using a newly developed general equilibrium model the model accounts explicitly for both foreign direct investment and the activities of foreign affiliates using heterogeneous production technologies we find that the unilateral reduction of barriers to fdi in distribution services in india benefits the economy as a whole consumers and foreign producers but hurts domestic distributors nevertheless when we consider the associated productivity improvements documented in the literature to downstream and upstream industries we find that domestic producers are expected to benefit from the liberalization of the distribution sector as well

impacts of supermarkets on farm household nutrition in kenya summary many developing countries experience a food system transformation with a rapid growth of supermarkets we analyze impacts of supermarkets on farm household nutrition with survey data from kenya participation in supermarket channels is associated with significantly higher calorie vitamin a iron and zinc consumption we use simultaneous equation models to analyze impact pathways supermarket supplying households have higher incomes a higher share of land under vegetables and a higher likelihood of male control of revenues furthermore income and the share of land under vegetables have positive impacts while male control of revenues has negative impacts on dietary quality policy and further research implications are discussed

a bayesian sampling approach to measuring the price responsiveness of gasoline demand using a constrained partially linear model partial linear models provide an intuitively appealing way to examine gasoline demand because one can examine how response to price varies according to the price level and people s income however despite their intuitive appeal partial linear models have tended to produce implausible and or erratic price effects blundell et al 2012 propose a solution to this problem that involves using slutsky shape restrictions to improve the precision of the nonparametric estimate of the demand function they propose estimating a constrained partially linear model through three steps where the weights are optimized by minimizing an objective function under the slutsky constraint bandwidths are selected through least squares cross validation and linear coefficients are estimated using profile least squares a limitation of their three step estimation method is that bandwidths are selected based on pre estimated parameters we improve on the blundell et al 2012 solution in that we derive a posterior and develop a posterior simulation algorithm to simultaneously estimate the linear coefficients bandwidths in the kernel estimator and the weights imposed by the slutsky condition with our proposed sampling algorithm we estimate a constrained partially linear model of household gasoline demand employing household survey data for the united states for 1991 and 2001 and for canada for 2006 2009 and find plausible price effects

the effect of population density road network density and congestion on household gasoline consumption in u s urban areas abstract this paper applies both semiparametric and parametric approaches to explore the effect of population density freeway road density and congestion on household gasoline consumption in u s urban areas while controlling for household demographic and economic characteristics regression results indicate that households living in those urban areas with higher freeway densities higher levels of congestion or lower population densities consume more gasoline

foreign direct investment in india s retail bazaar opportunities and challenges despite encouraging signs india s retail market remains largely off limits to large international retailers like wal mart and carrefour opposition to liberalising foreign direct investment in this sector raises concerns about employment losses unfair competition resulting in large scale exit of incumbent domestic retailers and infant industry arguments to protect the organised domestic retail sector that is at a nascent stage based on international evidence we suggest that allowing entry by large international retailers into the indian market may help tackle inflation especially in food prices moreover technical know how from foreign firms such as warehousing technologies and distribution systems can improve supply chain efficiency in india in particular for agricultural produce better linkages between demand and supply have the potential to improve the price signals that farmers receive and also serve to enhance agricultural and other exports

household gasoline demand in the united states supported by the mit center for energy and environmental policy research the u s dept of energy and the national science foundation

intertemporal depletion of resource sites by spatially distributed users mineral deposits and other exhaustible resources are scattered around the globe as are their users yet the theory for analyzing depletion of such resources assumes that all resource sites and all users are located in the same place when applying the theory therefore one is forced to disregard what often seems to be an important real world consideration our purpose here is to generalize harold hotelling s 1931 theory of exhaustible resources to accommodate situations in which resource sites and their users are spatially distributed our analysis has many applications it can be applied to a conventional exhaustible resource like oil alternatively it can be applied to an unconventional exhaustible resource like scarce landfill space shipments of solid waste to landfills in other states or countries have become a prominent public policy issue eduardo ley et al 2000 finally our analysis can be applied in situations where the space reflects not geographical location but characteristics of the resource e g the sulfur content hardness and so forth of coal which users find distinctive 2 only two theoretical papers in resource economics have introduced spatial considerations 3 jean jacques laffont and michel moreaux 1986 studied the extraction of resources from sites located along a line segment with all users at one end charles kolstad 1994 was the first to consider spatially distributed users in his formulation consumers are distributed uniformly along a line segment with resource sites at each end kolstad s approach although innovative requires that the set of users be parti

substitution between biofuels and fossil fuels is there a green paradox we show that i subsidies for renewable energy policies with the intention of encouraging substitution away from fossil fuels may accentuate climate change damages by hastening fossil fuel extraction and that ii the opposite result holds under some specified conditions we focus on the case of subsidies for renewable resources produced under increasing marginal costs and assume that both the renewable resources and the fossil fuels are currently in use such subsidies have a direct effect and an indirect effect working in opposite directions the direct effect is the reduction in demand for fossil fuels at any given price the indirect effect is the reduction in the current equilibrium price for fossil fuels which tends to increase the amount of fossil fuels demanded whether the sum of the two effects will actually result in an earlier or later date of exhaustion of the stock of fossil fuels depends on the curvature of the demand curve for energy and of the supply curve for the renewable substitute

a semiparametric model of household gasoline demand gasoline demand studies typically generate a single price and income elasticity for a country it is however possible that these elasticities may differ among various socio economic groups at the same time parametric gasoline demand models may not be flexible enough to capture the changes in price elasticities with different levels of income this paper models us gasoline demand using more flexible semiparametric techniques accommodating the possibility of differences in responses among households the econometric model employs a non parametric bivariate smoothing for price and income and a parametric representation of other explanatory variables possible heterogeneity in price and income elasticities is modelled through interacting price and income with demographic variables results show that price responses do vary with demographic variables such as income multiple vehicle holding presence of multiple wage earners or rural or urban residential locations households responses to a price change decrease with higher income multiple vehicle and multiple earner households also show higher sensitivity to a price change households located in urban areas reduce consumption more than those in rural areas in response to an increase in price comparison of the flexible semiparametric model with a parametric translog model however reveals no significant differences between results and the parametric models have the advantage of lower computational requirements and better interpretability

the benefits of storage and non renewable resource price dynamics both the theory of storage and the hotelling model play a prominent role in the study of non renewable resource prices this paper combines these approaches by modifying the hotelling model to allow firms to hold inventory in addition to in ground reserves contributing three new results first inventory is more likely to be held if future demand and or the marginal cost of extraction are uncertain second the market price of the commodity is based on the theory of storage when inventory is held third the optimal extraction of the resource is based on the hotelling model a la fois la theorie de l entreprosage et le modele d hotelling jouent un role important dans l etude du prix des ressources non renouvelables le present memoire combine ces approches en modifiant le modele d hotelling pour permettre aux entreprises de detenir des inventaires en plus de reserves souterraines cela produit trois resultats d abord on est davantage susceptible de detenir des inventaires si la demande future et ou le cout marginal de l extraction sont incertains ensuite le prix du marche de la ressource est fonde sur la theorie de l entreposage quand inventaire il y a enfin l extraction optimale de la ressource est basee sur le modele d hotelling

technological change and the dynamics of resource scarcity measures abstract within a general competitive model of resource extraction this paper investigates the effect of technological change on the time paths of resource scarcity measures cost price and rent and the possible relationship between them it shows that the effect of technological change depends crucially on whether it is extraction biased or depletion biased it derives conditions under which the three measures move together and when they do not it argues in favor of rent as a more reliable indicator of scarcity change the theoretical insights obtained here help to explain both the sharp contrast of empirical results regarding the time trend of a specific measure as well as the observed lack of harmony among the time paths of the measures

limits to the privatization of fishery resources a debate is emerging over the extent to which privatization of fishery resources is socially desirable the pessimists argue that there are strict limits to socially optimal privatization of such resources the optimists maintain that there are no effective limits to privatization and that the decades old fear that privatization could in some cases lead to resource extinction are of theoretical interest only we argue here that these fears are regrettably not baseless and that there are definite limits to socially desirable privatization we discuss means by which such limits could be identified on a fishery by fishery basis

market fundamentals competition and natural gas prices after the liberalisation of the gas industry trading hubs have emerged in europe although these hubs appear to be liquid market places fostering gas to gas competition the efficiency of the gas market remains a topic of interest as a fair share of gas is still traded through long term contracts with prices linked to the oil price while the number of gas suppliers to the european market is limited in order to assess the efficiency of the gas market we analyse the day ahead spot price at the dutch gas hub over the period 2011 2014 we find that the oil price had a small positive impact on the gas price changes in the concentration on the supply side did not affect the movement in gas prices the availability of gas in storages and the outside temperature negatively influenced the gas price we also find that the gas price was related to the production of wind electricity overall we conclude that the day ahead gas prices are predominantly determined by gas market fundamentals policies to further integrate gas markets within europe may extend this gas to gas competition to a larger region

gasoline demand in europe new insights abstract this study utilizes a panel data set from 14 european countries over the period 1990 2004 to estimate a dynamic model specification for gasoline demand previous studies estimating gasoline consumption per total passenger cars ignore the recent increase in the number of diesel cars in most european countries leading to biased elasticity estimates we apply several common dynamic panel estimators to our small sample results show that specifications neglecting the share of diesel cars overestimate short run income price and car ownership elasticities it appears that the results of standard pooled estimators are more reliable than common iv gmm estimators applied to our small data set

limit pricing and the in effectiveness of the carbon tax we present a theory of limit pricing monopoly in non renewable resource production facing a very inelastic demand an oil monopoly seeks to induce the highest price that does not destroy its demand unlike the conventional hotellian analysis the monopoly tolerates some ordinary substitutes to its oil but deters high potential ones with limit pricing policy induced extraction changes do not obey the usual logic for example oil taxes have no effect on current oil production extraction increases when high potential substitutes are promoted but can be effectively reduced by supporting ordinary substitutes the carbon tax not only applies to oil it also penalizes its ordinary carbon substitutes whose market shares are taken over by the monopoly thus the carbon tax ambiguously affects current and long term oil production and carbon emissions

elasticities of demand for gasoline in canada and the united states abstract fluctuations in the world price of oil the concern with greenhouse gas emissions and the efforts to revive the 1997 kyoto protocol have resulted in renewed interest in the estimation of elasticities of demand for gasoline in this paper a complete system of demand equations is estimated including an equation for the demand for gasoline canadian family expenditure famex and united states consumer expenditure cex survey data are used household level data permits estimation of elasticities for various household groups also differences in demand responsiveness to own price and income changes are estimated for different regions in canada and the united states demand is found to be own price and income inelastic on the whole as reported in earlier studies there is also variation in these elasticities across regions of canada and the united states however larger differences are observed with respect to household size and housing tenure than to region of residence

dynamically consistent oil import tariffs the standard solution of the open loop optimal import tariff is normally time inconsistent the paper shows why and derives the dynamically consistent markov perfect tariff the two tariffs are compared they differ except for a special class of import demands the time paths of tariffs and the welfare cost of an inability to commit are calculated for a dominant importer the welfare costs of the inability to commit are small if its market share

estimation with censored regressors basic issues we study issues that arise for estimation of a linear model when a regressor is censored we discuss the efficiency losses from dropping censored observations and illustrate the losses for bound censoring we show that the common practice of introducing a dummy variable to correct for censoring does not correct bias or improve estimation we show how censored observations generally have zero semiparametric information and we discuss implications for estimation we derive the likelihood function for a parametric model of mixed bound independent censoring and apply that model to the estimation of wealth effects on consumption

strategic resource dependence we consider a situation where an exhaustible resource seller faces demand from a buyer who has a substitute but there is a time to build delay for the substitute we find that in this simple framework the basic implications of the hotelling model 1931 are reversed over time the stock declines but supplies increase up to the point where the buyer decides to switch under such a threat of demand change the supply does not reflect the current resource scarcity but it compensates the buyer for delaying the transition to the substitute the analysis suggests a perspective on costs of oil dependence

optimal management of strategic reserves of nonrenewable natural resources abstract this paper studies the stockpiling issue for an oil importing country that is likely to suffer embargoes the occurrence and duration of which are uncertain i show the existence of a decreasing reserves path that the country wants to attain in order to hedge against these disruptions allowing the importing country to invest in r d in order to free itself from the embargo threat i determine the optimal effort that should be engaged in research the incentive to develop a backstop is shown to increase with the depletion of the reserves

separation of powers and the tax level in the u s states we estimate a nonlinear and discontinuous relationship between the tax level and the degree of alignment between the legislature and the governor measured as the number of seats in the legislature that belong to the governor s party in the states with the line item veto the tax level jumps at the point where the government switches from divided to unified with a regression discontinuity design we show that this jump can be interpreted as a causal effect we propose a simple model to account for this nonlinear relationship the sequential nature of the budget bargaining game that is the legislature proposes and the governor cuts with the line item veto implies that the tax level is determined by the overlap between the supporters of the governor and the supporters of the legislative majority changes in the size of the overlap determine the tax level

a varying coefficient approach to global flexibility in demand analysis a semiparametric approximation to reduce dimensionality issues this article derives a globally flexible demand system that can be estimated non parametrically with a specially devised temporal kernel statistical and economic results from a meat demand application underscores the usefulness of a temporal kernel in globally approximating an integrable demand system

a practical approach to oil wealth management application to the case of kazakhstan abstract this study presents a practical approach to oil wealth management by bringing together various dimensions oil production and sustainability of oil reserves impact on the economy and the balance of trade and the impact on the fiscal balance government debt and the national oil fund within a long term planning framework the study provides a quantitative depiction of the above dimensions to 2050 for the case of kazakhstan where the country s oil output has grown from about 0 6 million barrels day mb d in the late 1990s to 1 8 mb d in 2013 and it is expected to reach a peak of 3 5 mb d by 2035 the analysis of this study indicates that within the limits of proven oil reserves kazakhstan s oil production capacity would collapse to negligible amounts after the peak period of 2035 this envisaged scenario will have undesirable impacts on the economy balance of trade and fiscal balance both prior and after 2035 to avoid these erratic impacts the study examines an alternative conservative production scenario that would enable the country to maintain its level of oil production until 2050 and to manage better the transition to a non oil economy

modeling gasoline demand in the united states a flexible semiparametric approach abstract the focus of this paper is on the modeling and estimation of quarterly state level gasoline demand in the united states the existing literature may not appropriately evaluate the price elasticity and income elasticity of gasoline demand most studies fail to address the possible heterogeneity in gasoline demand elasticities that may arise from a variety of sources the endogeneity issue of gasoline price has remained redundant throughout the literature i address these challenges using a flexible demand model and a recently developed estimation technique the econometric approach allows for functional coefficients to accommodate the heterogeneity in demand elasticities several instrumental variables are used to investigate the endogeneity of gasoline price the estimation results provide strong evidence of heterogeneous gasoline demand elasticities across states and over time some state level attributes along with income and macroeconomic shocks are the potential sources of heterogeneity

endogenous growth with a limited fossil fuel extraction capacity campbell 1980 and following authors have discussed a limited resource extraction capacity as an augmentation of the well known hotelling model we integrate a limited extraction capacity and related investments in the endogenous growth model of tsur and zemel 2005 to study its effect on economic development the capacity constraint gives rise to three effects on the one hand higher energy costs and the reallocation of production towards capacity investments decrease production available for consumption research and or capital investments energy costs and reallocation effect on the other hand research investments may increase which boosts available production research effect depending on the capital endowment and the strength of the effects long run consumption may be boosted or depressed in particular the capacity constraint may render everlasting consumption growth non optimal in a resource rich economy furthermore we find that capacity investments may be postponed to later points in time if the capital endowment is high

measuring consumer welfare with mean demands the welfare change from a price increase for example the compensating variation cv is often calculated using the expenditure function from an estimated demand if there is unobserved preference heterogeneity then the estimated demand is an average over households with different preferences and the cv from the mean demand does not generally equal the mean cv we give conditions ensuring that the cv from the mean demand equals the mean cv is less than the mean cv and approximates the mean cv better than the change in consumers surplus a necessary condition is that demands become more dispersed as income rises

analysing gasoline demand elasticities a survey this paper is a survey of studies on gasoline demand although there are very many dxerent studies in this eld which sometimes appear to arrive at contradictory results we find that with proper stratification of studies by model and data type much of the contict turns to consensus in this survey we classtfy studies by data type and by ten d erent categories of model and with the exception of estimates on seasonal data which tend to be unstable and of certain inappropriate model formulations we find a fair degree of agreement concerning average short run and even long run income and price elasticities

a test of the hotelling rule using old growth timber data the paper tests hotelling s prediction that scarcity rent for a non renewable resource will rise at the rate of discount in a market equilibrium we perform the test using data for old growth timber a resource that is effectively non renewable in contrast to previous studies for this resource a measure of scarcity rent is directly observable in the form of stumpage price bids in timber auctions we construct a model that allows for replanting and captures the institutional framework of the western u s timber market the modified hotelling rule that we derive is not rejected in several of our specifications

the time path of scarcity rent in the theory of exhaustible resources there is now a consensus in the literature on resource economics that a depletable resource should command a price in excess of its marginal extraction cost simply to reflect the opportunity cost of using a unit of it today rather that conserving it for the future but how this excess is to change along an optimal or competitive equilibrium path of resource use is still an unresolved question this might at first seem puzzling since according to the fundamental theorem of economics of exhaustible resources or hotelling i 93 i rule on an optimal path price minus marginal extraction cost also termed interchangeably as scarcity rent user cost or royalty should steadily grow over time at the social rate of discount however the literature contains sharply contrasting views on the subject for example kay and mirrlees 1975 have argued that since along an optimal path the scarcity rent grows exponentially as a finite stock of a resourcexnears exhaustion then situations in which the resource stock is still very large and yet the price greatly exceeds the marginal extraction cost should indicate that the price is significantly above its optimal level and that the resource is overconserved in stark contrast to this view heal i976 has argued that as the resource stock nears exhaustion the difference between price and marginal cost or what he termed social cost of extraction falls monotonically to zero hanson i980 analyses the same model as heal s but unlike heal who assumes the unit extraction cost to be convex he postulates it to be concave and yet like heal concludes that the scarcity rent will be monotonically declining over time solow and wan i976 analyse a still different situation where resource deposits differ in quality and the unit extraction cost increases as higher grade deposits are exhausted and extraction proceeds to lower grades they show that along an optimal path the shadow price of a resource must rise at the real rate of interest despite differential extraction costs but that the difference between price and the marginal extraction cost or what they call degradation charge declines monotonically over time to zero these sharply differing conclusions suggest that far from being resolved the question of how scarcity rent changes over time is much in want of a close scrutiny the need for such a scrutiny becomes even stronger once it is noted

resources as a constraint on growth for a considerable part of its history the american economy has functioned as a cowboy economy it has been a cowboy economy in the sense that there have been no important resource constraints on growth this is not to say that land minerals and a clean environment have been freely available rather agricultural land could be obtained at roughly constant costs most essential minerals have been present at fairly high grade in considerable abundance and the environment could be used as a sink without becoming fouled in the last several decades however cropland has stayed almost constant some high grade mineral deposits have been exhausted and the carrying capacity of our environment has been strained the scarcity of resources has led many to argue that the operating rules of our economy must change whereas in the cowboy economy we could afford to use our resources profligately the new view of economic growth is that the closing of all our frontiers means that we are now operating in a spaceship economy in a spaceship economy great attention must be paid to the sources of life and to the dumps where our refuse is piled things which have traditionally been treated as free goods air water quiet natural beauty must now be treated with the same care as other scarce goods it would seem difficult to question the observation that the world economy is progressing toward a closed system many have carried this observation further describing a future imperiled by famine depleted of essential materials running out of energy or choking in its own exhaust fumes behind these pessimistic visions is a deeper skepticism about the very fruits of economic growth economists have for the most part ridiculed the new view of growth arguing that it is merely chicken little run wild i think that the new view of growth must be taken seriously and analyzed carefully what have we learned about the new view the first set of studies relates to theoretical investigations by theoretical i mean propositions based on largely untested assumptions about model structure perhaps hypothetical would be a more accurate term in this category belong the celebrated writings sponsored by the club of rome as well as many offshoots of this work jay forrester dennis h meadows et al these works have demonstrated that under certain conditions involving technology population and resource availability a sustained growth path for consumption is not possible the conclusions of these works have not generally been accepted by economists because of the dubious nature of many of their assumptions in particular the assumptions regarding population growth and technology are quite unsatisfactory several authors have shown that the conclusions of these models are not robust to minor modifications in structure thus r boyd showed that introducing a new factor called technology would drastically alter the model s path my work 1973a showed that any of three changes in model structure ongoing technological progress adequate factor substitution or population decline would lead to opposite and more optimistic results it should be stressed however that all yale university

a cge analysis of the impact of foreign direct investment and tariff reform on female and male workers in tanzania summary this study analyzes the impact on female and male workers of tariff reform and the reduction of regulatory barriers faced by domestic and foreign firms operating in business services it develops a data set that distinguishes labor by gender for 52 sectors and four skill categories the model is the first to incorporate modern trade theory to assess its gender implications the dixit stiglitz framework results in productivity gains which increase remunerations across all worker categories however this is less beneficial for women because the less skilled workers and the ones that are less involved in business services gain less

the hotelling rule in non renewable resource economics a reassessment harold hotelling s 1931 contribution is known for providing a basic principle the hotelling rule to the economics of non renewable resources nearly ninety years later empirical tests conclude the rule lacks empirical validity requiring strong amendments to describe the long term aggregate behavior of its target object on the basis of hotelling s unpublished archival material this paper revisits the place given to the hotelling rule in non renewable resource economics our reconstruction shows that hotelling s 1931 paper has been misinterpreted from the outset the hotelling rule was not valid for mineral resources in contrast the consideration of two inherent geological constraints alongside exhaustibility offered the opportunity for an alternative basic framework capable to generate bell shaped and u shaped equilibrium trajectories for supplies and prices respectively inspired by this unknown aspect of hotelling s work brought to light by our archival investigation we sketch this alternative basic model enabling non renewable resource economics to circumvent the empirical shortfalls of the hotelling rule

hotelling under pressure we show that oil production from existing wells in texas does not respond to oil prices while drilling activity and costs respond strongly to explain these facts we reformulate hotelling s class

nonparametric estimation of exact consumers surplus and deadweight loss we apply nonparametric regression models to estimation of demand curves of the type most often used in applied research from the demand curve estimators we derive estimates of exact consumers surplus and deadweight loss which are the most widely used welfare and economic efficiency measures in areas of economics such as public finance we also develop tests of the symmetry and downward sloping properties of compensated demand we work out asymptotic normal sampling theory for kernel and series nonparametric estimators as well as for the parametric case the paper includes an application to gasoline demand empirical questions of interest here are the shape of the demand curve and the average magnitude of welfare loss from a tax on gasoline in this application we compare parametric and nonparametric estimates of the demand curve calculate exact and approximate measures of consumers surplus and deadweight loss and give standard error estimates we also analyze the sensitivity of the welfare measures to components of nonparametric regression estimators such as the number of terms in a series approximation

the elephant in the ground managing oil and sovereign wealth many oil exporters accumulate large sovereign wealth funds though their portfolio allocation does not take into account below ground assets like oil similarly the above ground portfolio does not affect the decision to extract oil this paper shows that subsoil oil wealth should change a country s above ground asset allocation in two ways first the holding of all risky assets is leveraged because there is additional wealth outside the fund second more less is invested in financial assets that are negatively positively correlated with oil to hedge against the riskiness of subsoil exposure furthermore if marginal oil rents move pro cyclically with the value of the financial assets in the fund then oil will be extracted slower than predicted by the standard hotelling rule this leaves a buffer of oil to be extracted when both oil prices and asset returns are high finally any unhedged residual volatility must be managed through additional precautionary saving

two stage budgeting and exact aggregation this paper presents an econometric model of demand for energy based on two stage budgeting the model provides own price and cross price elasticities of demand for energy and nonenergy commodities for the united states these elasticities are estimated separately for households classified by family size age of head region race and urban versus rural residence price elasticities are presented conditional on total energy expenditure and total expenditure on all commodities the model combines individual cross section data with aggregate time series data and is based on exact aggregation over individual demand functions

the pricing of durable exhaustible resources partial or total durability characterizes a large class of exhaustible resources hotelling s r percent rule will apply to a durable resource produced in a competitive market but will not apply if the resource is produced in a monopolistic market however the r percent rule does not mean that price is steadily rising it is shown that in general the competitive market price will fall initially as the stock in circulation increases and later will rise as the stock decreases and eventually depreciates toward zero after production ceases accounting for durability may thus help explain the u shaped long term price profiles observed for many resources 11 references 3 figures

contractual responses to the common pool prorationing of crude oil production this paper examines bargaining among firms to mitigate rent dissipation following the major oil discoveries of 1926 35 because of high bargaining costs firms chose prorationing instead of consolidation and unitization and success varied the analysis also shows that prorationing took the form it did because concession such as per well quotas were required to draw in small operations and the quotas led to predictable responses regarding rent dissipation prorationing despite its costs controlled total field production and costs conserved natural reservoir energies and lengthened field life when private agreements failed the parties successfully appealed for state enforcement since similar heterogeneities influnce regulations elsewhere in the economy detailed analysis of bargaining among firms is essential for insight into the emergence of various institutional forms 33 references 3 tables

do oil producers act as oil igopolists in this paper the author analyzes an oligopoly model of exhaustible resource extraction and develop predictions about relative extraction patterns of different producers using the open quote oil close quote igopoly model of loury one can show that producers with large stocks produce a larger amount but a smaller percentage of their stocks than producers with small stocks the authors extend loury s model to cases where extraction costs differ among producers and where costs are a function of cumulative extraction an increase in extraction costs for a producer causes it to produce less relative to its rivals when extraction costs rise with cumulative extraction producers with large reserves tend to have lower extraction costs and a smaller ratio of cumulative production to initial reserves than producers with small reserves the authors test the predictions of the model using oil industry data and find that the empirical results are consistent with the predictions of open quotes oil close quotes igopoly theory producers with larger reserves extract a smaller share of their reserves and have lower production costs than producers with smaller reserves this pattern holds for 73 countries with oil reserves during the time period 1970 1989 and for approximately 400 us oil companies in 1983 and 1984 more the observed pattern of production for both opec and non opec producers is consistent with open quote oil close quote igopoly theory opec producers do not appear to restrain production given their level of reserves relative to non opec producers thus viewing the oil market as containing one dominant firm opec with a competitive fringe may be misleading further the pattern of extraction observed in oil markets is inconsistent with the pattern predicted by competitive theory 29 refs 5 figs 6 tabs less

oligopoly equilibria in nonrenewable resource markets abstract most nash cournot oligopoly models of nonrenewable resources apply open loop equilibrium concepts and are based on physical resource depletion this paper studies feedback equilibria and economic depletion assuming affine quadratic functional forms the existence uniqueness and explicit solutions for the equilibria are derived for duopoly and n player oligopoly with multiple resource stocks for the cases of nonquadratic criteria we develop a numeric solution scheme for the nash feedback equilibrium this scheme is an application of a discrete time discrete state controlled markov chain approximation method originally developed for solving deterministic and stochastic dynamic optimization problems in our nash cournot equilibrium the degree of concentration in supply declines over time whereas the previous models with physical depletion and open loop equilibrium concepts predict that a nash cournot resource market will develop in the direction of monopoly supply

habit formation and exhaustible resource risk pricing abstract this paper studies the risk pricing implications of introducing habit formation in consumption in a model that encompasses growth with nonrenewable resources and capital markets it is shown that the expected return on nonrenewable resource stocks incorporates both short run and long run risk factors the short run risk factor is associated with shocks to current surplus consumption growth the long run risk factor reflects the investor s desire to hedge against long run shocks to future surplus consumption prospects long run habit risk premium the model is tested using energy commodities index and us aggregate real per capita consumption data and the results confirm that habit enters significantly in the pricing equation by entertaining a long run time varying risk coefficient compared to results obtained with a no habit formation model time separable preferences we found that long run future prospects of surplus consumption constitute a forward looking risk factor to be taken into account in explaining the dynamics of energy prices under uncertainty

on the optimal order of natural resource use when the capacity of the inexhaustible substitute is limited consider a general equilibrium framework where the marginal cost of extraction from several deposits of an exhaustible resource is constant in terms of an inexhaustible perfect substitute and differs between deposits the instantaneous rate of production form the inexhaustible resource is subject to a capacity constraint

environmental and resource economics a canadian retrospective the paper reviews research contributions to environmental and resource economics by scholars in canada we focus mainly on work from the past 25 years but also highlight earlier pathbreaking work we begin by looking at broad trends in research both internationally and within canada we then review canadian contributions to various topics in the field canadians have played a leading role in the development of the field especially in resource economics international environmental economics and the valuation of environmental amenities

china s state energy investment during 1991 2007 investment analysis and policy issues bo h zhang b oughton c yuan x and ma j china s state energy investment during 1991 2007 investment analysis and policy issues regional studies this article examines china s state energy investment during 1991 2007 using provincial level panel data the analysis shows that china s state energy investment is 1 driven by demand for energy 2 mostly unrelated to energy efficiency 3 undertaken with the consideration of reducing negative externalities associated with energy production 4 used by central government to subsidize some local governments and 5 directed to heavy industries policy impacts 4 and 5 are more profound in provinces in which the state s ownership of the provincial industry is high in addition results 4 and 5 are stronger at the earlier stage of china s domestic reform and before china s entry into the world trade organization wto which suggests that these policy impacts weaken along with the progress of china s market transition in sum china s state en

nonparametric estimation of a nonseparable demand function under the slutsky inequality restriction we present a method for consistent nonparametric estimation of a demand function with nonseparable unobserved taste heterogeneity subject to the shape restriction implied by the slutsky inequality we use the method to estimate gasoline demand in the united states the results reveal differences in behavior between heavy and moderate gasoline users they also reveal variation in the responsiveness of demand to plausible changes in prices across the income distribution we extend our estimation method to permit endogeneity of prices the empirical results illustrate the improvements in finite sample performance of a nonparametric estimator from imposing shape restrictions based on economic theory

elasticities of gasoline demand in switzerland abstract using cointegration techniques we investigate the determinants of gasoline demand in switzerland over the period 1970 2008 we obtain a very weak price elasticity of 0 09 in the short run and 0 34 in the long run for fuel demand i e gasoline plus diesel the corresponding price elasticities are 0 08 and 0 27 our rich dataset allows working with quarterly data and with more explicative variables than usual in this literature in addition to the traditional price and income variables we account for variables like vehicle stocks fuel prices in neighbouring countries oil shocks and fuel taxes all of these additional variables are found to be significant determinants of demand

modeling nonrenewable resources use with multiple demands and multiple sources the theoretical literature following hotelling j polit econ 39 137 175 1931 assumed that all nonrenewable resource needs are satisfied by one type of resource e g oil extractible at different per unit costs this formulation implicitly assumes that all users are the same distance from each resource pool that all users can switch costlessly from one type of resource to another e g liquid fossil fuels to coal or vice versa and that all users are subject to the same regulations these assumptions imply as herfindahl extractive resources and taxation university of wisconsin press madison pp 63 90 1967 showed that in competitive equilibrium all users will exhaust a lower cost resource completely before beginning to extract a higher cost resource simultaneous extraction of different grades of oil or of oil and coal should never occur in trying to apply the single demand curve model during the last twenty years several teams of authors have independently found a need to generalize it to account for users differing in their 1 location 2 resource needs or 3 regulatory environment each research team found that herfindahl s strong unrealistic conclusion disappears in the generalized model in its place a weaker herfindahl result emerges since each research team focussed on a different application however it has not always been clear that everyone has been describing the same generalized model the goal in this paper is to integrate the findings of these teams and to present an easily accessible generalization of the nonrenewable resource model to multiple demand curves

disadvantageous oil tariffs and dynamic consistency a large importer who places relatively greater weight on future than current oil consumption will import less oil in the future than if it were able to commit itself in advance to future tariffs and may find itself worse off than if it were unable to impose tariffs at all futures markets and storage modify these adverse effects and may avoid the problem of dynamic inconsistency copyright 1990 by american economic association

does foreign direct investment promote growth exploring the role of financial markets on linkages abstract do multinational companies generate positive externalities for the host country the evidence so far is mixed varying from beneficial to detrimental effects of foreign direct investment fdi on growth with many studies that find no effect in order to provide an explanation for this empirical ambiguity we formalize a mechanism that emphasizes the role of local financial markets in enabling fdi to promote growth through backward linkages using realistic parameter values we quantify the response of growth to fdi and show that an increase in the share of fdi leads to higher additional growth in financially developed economies relative to financially under developed ones

trends in natural resource commodity prices an analysis of the time domain abstract this paper attempts to reconcile the theoretical predictions of increasing real prices for nonrenewable natural resource commodities obtained from hotelling style models with the empirical findings of falling prices for these commodities a theoretical model for relative price movements is derived for the case of exogenous technical change and endogenous change in the grade of ores mined the model suggests a u shaped time path for relative prices the implied price movements are tested for all the major metals and fuels and the model parameters are found to be statistically significant for 11 out of the 12 commodities tested

private storage of common property abstract many resources extracted under the rule of capture are not utilized immediately but are stored instead for later use oil is stockpiled fish are frozen groundwater is bottled rivers are dammed land deforested as the way to establish title remains uncultivated we examine the positive and normative effects of such storage privatization of common property through storage may eliminate inefficiencies altogether but the accelerated extraction it induces may also exacerbate them even if rapid extraction does not reduce ultimate recovery once storage commences extraction accelerates until the open access reserves are drained in limiting cases these speculative acquisitions are instantaneous the naturally occurring analogue of policy induced speculative attacks studied in the international finance literature when some reserves are privately owned while others are open access the order of extraction no longer follows the progression from lowest to highest per unit cost first noted by o c herfindahl in extractive resources and taxation m gaffney ed univ of wisconsin press madism 1997 instead the common property may be extracted in its entirety before any private reserves are extracted even if it has the higher per unit extraction cost

equilibrium transitions from non renewable energy to renewable energy under capacity constraints abstract we study the transition between non renewable and renewable energy sources with adjustment costs over the production capacity of renewable energy assuming constant variable marginal costs for both energy sources convex adjustment costs and a more expensive renewable energy we show the following with sufficiently abundant non renewable energy endowments the dynamic equilibrium path is composed of a first time phase of only non renewable energy use followed by a transition phase substituting progressively renewable energy to non renewable energy before a last time phase of only renewable energy use the investment into renewable energy may either begin before actual production of renewable energy or be delayed until the energy price achieves a sufficient gap with respect to the renewable energy cost with an initially abundant non renewable resource the features of the transition between non renewable and renewable energy do not depend upon the initial resource stock