analysing the interactions between renewable energy promotion and energy efficiency support schemes the impact of different instruments and design elements abstract co2 emissions reduction renewable energy deployment and energy efficiency are three main energy environmental goals particularly in europe their relevance has led to the implementation of support schemes in these realms their coexistence may lead to overlaps synergies and conflicts between them the aim of this paper is to analyse the interactions between energy efficiency measures and renewable energy promotion whereas previous analyses have focused on the interactions between emissions trading schemes ets and energy efficiency measures and ets and renewable energy promotion schemes furthermore the analysis in this paper transcends the certificate debate i e tradable green and white certificates and considers other instruments particularly feed in tariffs for renewable electricity the goal is to identify positive and negative interactions between energy efficiency and renewable electricity promotion and to assess whether the choice of specific instruments and design elements within those instruments affects the results of the interactions

currency competition a partial vindication of hayek abstract this paper establishes the existence of equilibria for environments in which outside money is issued competitively such equilibria are typically believed not to exist because of a classic overissue problem if money is valued in equilibrium an issuer produces money until its value is driven to zero by backward induction money cannot have value in the first place this paper shows that overissuance is not a problem if agents believe that if an issuer produces more than some threshold number of notes then only those notes issued up to the threshold will be valued additional notes will be worthless this result is very general applying to any monetary economy in which equilibria with and without valued money exist if the money supply is finite the paper also compares the allocation achieved by a monopolist to that achieved with competitive issuance in both a search and an overlapping generations environment the results depend on the environment considered but two general conclusions arise first it is ambiguous whether competitive issuers can achieve a more desirable allocation than a monopolist second with competitive issuance a licensing agency can always improve on pure laissez faire and achieve the efficient allocation in the long run

the financial crisis and the geography of wealth transfers abstract this paper studies the geography of wealth transfers between 2007q4 and 2008q4 at the height of the global financial crisis we construct valuation changes on bilateral external positions in equity direct investment and portfolio debt to measure who benefited and who lost on their external exposure we find a very diverse set of fortunes governed by the structure of countries external portfolios in particular we are able to relate the gains and losses on debt portfolios to the country s exposure to abs abcp conduits and the extent of dollar shortage

good things do not always come in threes on the excess cost of overlapping regulation in eu climate policy since the mid 1990 s the european union eu aims at pushing global climate policy the objective is to promote international cooperation by the adoption of substantial eu wide greenhouse gas emission reduction targets and their least cost implementation our quantitative impact assessment of the eu climate and energy package shows that the myriad of instruments used in the eu to curb greenhouse gas emissions is doomed to generate substantial excess cost we conclude that eu climate and energy policy should better disentangle its choices of objectives targets and policy instruments on rigorous economic grounds in order to improve the coherence and overall cost effectiveness of policy initiatives

on the launching of a new currency this paper studies the appropriate way of launching a new fiat currency within a dual currency search theoretic framework we demonstrate that legal tender laws may not be sufficient to guarantee the acceptability of the new currency and that the old currency may continue to circulate if the enforcement power of legal tender laws is weak and the fraction of individuals endowed with the new currency is too low the possibility of converting the old currency into the new one can ease the transition to the new currency only if it is combined with strict legal tender laws finally a network externality may generate inefficiencies in the decision to switch to the new currency

one or two monies abstract the set of incentive feasible allocations is examined in a dynamic quasi linear environment where agents lack commitment and have private information over their idiosyncratic characteristics when record keeping is available the first best allocation is implementable in a set of sufficiently patient economies when record keeping is limited to one money this set is strictly smaller except when private information is absent when record keeping is expanded but limited to two monies the set of economies for which the first best is implementable corresponds to that of record keeping even when private information is present we further demonstrate that two monies are a perfect substitute for record keeping

a search theoretic approach to monetary economics the essential function of money is its role as a medium of exchange the authors formalize this idea using a search theoretic equilibrium model of the exchange process that captures the double coincidence of wants problem with pure barter one advantage of the framework described here is that it is very tractable the authors also show that the model can be used to addre ss some substantive issues in monetary economics including the potenti al welfare enhancing role of money the interaction between specializat ion and monetary exchange and the possibility of equilibria with multip le fiat currencies copyright 1993 by american economic association

hysteresis in a simple model of currency substitution abstract a cash in advance model in which the cost of buying goods with a foreign currency is decreasing in the economy s accumulated experience in transacting in the foreign currency is shown to display hysteresis in money velocity that is a temporary increase in expected inflation can cause a permanent increase in velocity in addition the model implies that the domestic currency does not have to dominate the foreign currency in rate of return to induce agents to stop using the foreign currency finally inflation rates that trigger currency substitution need not be associated with steady states in which the domestic currency disappears from circulation

blessing or curse foreign and underground demand for euro notes public finance solutions to the european unemployment problem developing countries may hold as much as 25 30 of the 1 3 trillion oecd currency supply although dollar holdings appear to exceed dm holdings by a factor of four the advent of the euro may change this balance indeed by issuing large denomination notes of 100 200 and 500 the european central bank appears to be well poised to challenge the dominance of the ubiquitous us 100 note however large denomination notes are also extremely popular in the oecd underground economy which appears to hold at least 50 of the currency supply as a result the seigniorage revenues obtained by issuing large denomination notes may be an accounting illusion substantially or fully offset by losses due to increased tax evasion hence the new european central bank may wish to consider policies that discourage underground use of currency even at the expense of losing out on foreign demand kenneth rogoff

legal restrictions and international currencies an experimental approach abstract this paper integrates theory and experiments to explore how policy rules related to government interventions can affect economic allocations and the international status of a currency using a two country two currency search model we study two types of government interventions 1 legal restrictions impacting a seller s ability to accept a foreign currency and 2 reductions to the cost a seller must pay to accept a foreign currency the first intervention can be viewed as a way to capture a decrease in capital controls while the second can be viewed as a way to explore the impact of reducing information costs associated with using a foreign currency our results indicate that abolishing legal restrictions that impact a seller s ability to accept a foreign currency can increase both quantities traded and the number of trades involving two types of currencies additionally the international status of currencies is significantly enhanced when sellers face very low foreign currency acceptance costs

dollarization and currency exchange abstract we use a dual currency money search model to study dollarization agents hold portfolios consisting of two currencies one of which is risky we use numerical methods to solve for the steady state distributions of currency portfolios transaction patterns and value functions as risk increases agents increasingly use the safe currency as a medium of exchange dollarization occurs furthermore the safe currency trades for multiple units of the risky currency this type of currency exchange and the corresponding nominal exchange rate are often observed in black market or unofficial currency exchange markets in developing countries due to decentralized trading a distribution of exchange rates arises whose mean and variance change in predictable ways when currency risk increases

government transaction policy and gresham s law abstract a search theoretic model is used to study how legal restrictions may account for the fact that gresham s law sometimes holds but other times fails legal restrictions is modeled here as policies that government adopts in the transactions with private agents such as at what prices it accepts a currency in exchange for goods and at what ratios it conducts currency exchange a government policy sufficiently favorable to light coins can induce the existence of an equilibrium where both coins circulate and light coins are even accepted at a premium a policy favorable to heavy coins may increase their value to such an extent that they are hoarded from circulation when this equilibrium did not exist without interventions

money as a unit of account we develop a theory that rationalizes the use of a dominant unit of account in an economy agents enter into non contingent contracts with a variety of business partners trade unfolds sequentially in credit chains and is subject to random matching by using a dominant unit of account agents can lower their exposure to relative price risk avoid costly default and create more total surplus we discuss conditions under which it is optimal to adopt circulating government paper as the dominant unit of account and the optimal choice of currency areas when there is variation in the intensity of trade within and across regions

secondary currency an empirical analysis abstract many cases exist of multiple currency usage throughout history as two leading examples secondary currencies were widespread during both the great depression in the united states and the 2002 recession in argentina what are the determinants of multiple currency usage and what is the effect on economic activity both issues are empirically addressed using individual level surveys collected by the authors in argentina during 2002 and 2003 the evidence supports the theoretically predicted determinants of secondary currency acceptability put forth in monetary theory in particular findings show that the acceptability of the secondary currency increases when the supply of national currency is low the relative transaction cost of the secondary currency is low and the individual trading technologies are less effective moreover the acceptability of the secondary currency has real effects on economic activity among those who use the secondary currency the monthly income gain is more than 15 of the average argentine s monthly income excluding trades of used goods this amounts to a 0 6 increase in gdp

search bargaining money and prices the goal of this paper is to extend existing search theoretic models of fiat money which until now have assumed that the price level is exogenous by explicitly incorporating bilateral bargaining this allows us to determine the price level endogenously and leads to additional insights concerning the role of money for example we find that monetary equilibria are generally inefficient in the sense that output and prices differ from the solution to a social planner s problem although the difference can become small as the discount rate or search friction vanishes we also find that there exist nonstationary inflationary equilibria

multiproduct technology and market structure a recent line of research has exposed some technological determinants of the structure of industries that produce more than one good the analyses of both multiproduct perfect competition and natural monopoly require a generalized notion of average cost and in addition several newly identified technological characteristics pertinent only to joint production this paper provides an overview of these new results and suggests a unifying framework in which the theory can be further developed

when did the dollar overtake sterling as the leading international currency evidence from the bond markets abstract we offer new evidence on the emergence of the dollar as the leading international currency focusing on its role as currency of denomination in global bond markets we show that the dollar overtook sterling much earlier than commonly supposed as early as in 1929 financial development appears to have been the main factor helping the dollar to overcome sterling s head start the finding that a shift from a unipolar to a multipolar international monetary and financial system has happened before suggests that it can happen again that the shift occurred earlier than commonly believed suggests that the advantages of incumbency are not insurmountable and that financial deepening was a key determinant of the dollar s emergence points to the challenges facing currencies aspiring to international status

endogenous multiple currencies in this paper i study a model in which households can decide which currency or currencies they will accept i provide a simple set of assumptions that are sufficient to prevent the indeterminacy of the exchange rate in the sense of kareken and wallace 1981 in a two country model stable equilibria have either a single currency or national currencies i also show currency substitution occurs as an endogenous response to high growth in the stock of a currency

a model of the federal reserve act under the international gold standard system abstract freeman am econom rev 86 1996a 1126 shows that an elastic money supply enhances the efficiency of monetary equilibrium by clearing default free debts at par value in the domestic credit market this research adds a foreign exchange market to freeman s model and extends his analysis into a two country model in which the arrival rates of agents are not equal between the two countries in this model an elastic money supply in the foreign exchange market to clear the exchange of fiat monies at gold standard parity accompanied by an elastic money supply in the domestic credit market could improve the efficiency of monetary equilibrium

carbon trading in the policy mix the kyoto protocol is stimulating the development of emissions trading schemes at the national and international levels these are being introduced alongside existing policy instruments such as carbon taxes and negotiated agreements leading to complex problems of policy interaction but the topic of policy interaction remains under researched this paper aims to improve understanding of such interactions by examining the conditions under which a cap and trade scheme for carbon dioxide emissions may usefully coexist with carbon energy taxes support mechanisms for renewable electricity and policies to promote energy efficiency the paper argues that each of these instrument combinations may be acceptable provided they contribute to either improving the static or dynamic efficiency of the trading scheme or delivering other valued policy objectives but since the coexisting instruments may raise overall abatement costs while contributing nothing further to emission reductions the objectives and trade offs within the policy mix must be explicit

an information based theory of international currency abstract this paper develops an information based theory of international currency based on search frictions private trading histories and imperfect recognizability of assets using an open economy search model with multiple competing currencies the value of each currency is determined without requiring agents to use a particular currency to purchase a country s goods strategic complementarities in portfolio choices and information acquisition decisions generate multiple equilibria with different types of payment arrangements while some inflation can benefit the country issuing an international currency the threat of losing international status puts an inflation discipline on the issuing country when monetary authorities interact in a simple policy game the temptation to inflate can lead optimal policy to deviate from the friedman rule the calibrated model can produce a welfare cost of losing international status for the issuing country larger than previous findings though estimates depend critically on inflation rates and information costs

introduction to the symposium issue on money and liquidity abstract this symposium on money and liquidity follows a conference held in santa barbara in august 2014 under the sponsorship of the laboratory for aggregate economics and finance at ucsb the conference was a celebration of the twenty fifth anniversary of the publication of kiyotaki and wright s on money as a medium of exchange this symposium contains a selection of the papers presented at the conference and a selection of regular submissions that fit the theme all papers were peer reviewed according to the usual jet procedures

currency exchange in a random search model this paper investigates foreign exchange trading a phenomenon that typically accompanies international trade a search theoretic general equilibrium approach is adopted to study a two country two currency model for some parameter values of the model there exist some pure strategy equilibria in which commodity currency trade is conducted primarily through local currency and in which there is active currency currency exchange the coexistence of valued foreign currency and its local non acceptability conforms largely with the country specific cash in advance constraint that is often assumed exogenously in international finance literature

price and income elasticities of residential and industrial electricity demand in the european union this study examines the short and long run price and income elasticities of residential and industrial electricity demand in the european union between 1996 and 2016 instrumental variable models using the between estimator as well as dynamic panel models are employed to present robust estimates and to assess the impact of different methodologies on the reported elasticities the long run price elasticity of residential electricity consumption is estimated between 0 53 and 0 56 these elasticities are more inelastic than that of industrial electricity use which is reported between 0 75 and 1 01 the choice of different econometric methodologies has only moderate impact on the estimates while long run residential income elasticity estimates are moderately inelastic and estimated around 0 61 industrial electricity use tends to be closely tied to income with elasticities between 0 76 and 1 08 electricity demand in all sectors is highly price and income inelastic in the short run additionally population density temperatures and policy measures also influence sectoral electricity use the above estimates can aid the design of european energy and environmental policy

toward a theory of international currency we use the framework of random matching games and develop a two country model of the world economy in which two national currencies compete and may be circulated as media of exchange there are multiple equilibria which differ in the areas of circulation of the two currencies in one equilibrium the two national currencies are circulated only locally in another one currency is circulated as an international currency there is also an equilibrium in which both currencies are accepted internationally we also find an equilibrium in which the two currencies are directly exchanged we first characterize the existence conditions of these equilibria in terms of the relative country size and the degree of economic integration and then use an evolutionary approach to equilibrium selection to explain the evolution of the international currency as the two economies become more integrated some welfare implications are also discussed for example a country can improve its national welfare by letting its own currency circulate internationally provided the domestic circulation is controlled for when the total supply is fixed however a resulting currency shortage may reduce the national welfare

on the welfare benefits of an international currency abstract is it beneficial for a country s currency to be used internationally and if so can we quantify the benefit since the emergence of the euro there has been great interest in the consequences of a transfer of the dollar s premier international role to the euro this paper presents a novel model based approach towards assessing the welfare benefits associated with the international use of a country s currency apart from the familiar benefits associated with seigniorage residents of the issuing country experience an increase in the purchasing power of their currency both at home and abroad in the calibration exercise carried out in this paper we find the benefits of an international currency to be quantitatively significant the welfare gain for the euro area in having the euro internationally used ranges from 1 9 to 2 3 of consumption depending on relative inflation rates the rest of the world is not indifferent as to which currency circulates as the dominant international currency conditional on their currency not being used internationally their preference is for the dominant international currency to be the one with the lowest inflation rate

a fundamental theory of exchange rates and direct currency trades in this paper we construct a two country search model to determine the nominal exchange rate between two fiat monies our model allows agents to use any currency to trade for goods in all countries however search frictions restrict agents opportunities for instantaneous arbitrage and hence make the nominal exchange rate determinate the nominal exchange rate depends on the two countries economic fundamentals including the stocks and growth rates of the two monies direct exchanges between currencies are essential and they imply a nominal exchange rate that is different from the relative price between the two currencies in the goods markets there are persistent violations of the law of one price and purchasing power parity in equilibrium despite the fact that prices are perfectly flexible and all goods are tradeable between countries nominal and real exchange rates can move together in the steady state in response to money growth shocks

viewpoint a microfoundation of monetary economics in this lecture i explain what the microfoundations of money are about and why they are necessary for monetary economics then i review recent developments of a particular microfoundation of money commonly known as the search theory of money finally i outline some unresolved issues dans cette presentation l auteur explique ce que sont les microfondations de la monnaie et pourquoi elles sont necessaires a l economie monetaire ensuite il passe en revue certains developpements recents d une microfondation particuliere de la monnaie connue sous le nom de theorie de la recherche de la monnaie enfin l auteur fait le tour d un ensemble de problemes qui restent sans solution pour le moment

currency areas and monetary coordination we integrate a monetary search model into open economy macro to analyze the gains from coordinating on inflation search frictions and local congestion lead to a determinate exchange rate between two currencies relative prices deviate from the law of one price because the deviations depend on the cross country differential in money growth each country is tempted to inflate to exploit the deviations policy coordination reduces inflation and improves welfare for all countries in contrast to traditional models the gains from coordination continue to exist even after each country optimally sets a direct tax on the foreign use of the country s currency

invoicing currency in international trade an empirical investigation and some implications for the renminbi to play the role of a unit of account an international currency must be a currency widely used to invoice international trade this paper investigates the determinants of the use of currencies in trade invoicing and evaluates the potential of the renminbi for the denomination of cross border transactions in the asia pacific region in particular we develop a simple model and establish the evidence showing that there is a convex relationship between the invoicing share of a currency and the economic size of its issuing country because of a coalescing effect and thick market externalities we use the ratio of the foreign exchange fx turnover share of a currency to the global gdp share of its issuing country as a proxy for the size of thick market externalities which we argue reflects capital account openness financial development and exchange rate stability of the country this ratio is very small for the renminbi compared with the ratios for established international currencies our quantitative analysis suggests that the renminbi can be a major invoicing currency in the region only if china sufficiently opens up its capital account and liberalises its financial sector we also draw a parallel between the renminbi and the euro and forecast the invoicing share of the renminbi in the asia pacific region if the renminbi market attained the same degree of thickness as the euro

asset dynamics liquidity and inequality in decentralized markets the kiyotaki and wright model has exerted a considerable influence on the monetary search literature we argue that the model also delivers important insights into a broader range of macroeconomic and development issues the analysis studies how market frictions and the liquidity of assets affect the distribution of income experiments illustrate how the economy adjusts to shocks to asset returns and to the matching technology they also deal with long run transition an experiment interprets the reversal of fortune hypothesis as a situation in which an economy with a low return asset takes over a similar economy with a high return asset jel c61 c63 e41 e27 d63

price elasticity of demand in the epex spot market for electricity new empirical evidence this paper provides estimates for the price elasticity of demand in the european power exchange epex day ahead market for electricity an institutional change in the year 2010 allows us to use wind speed as an instrumental variable for hourly spot market prices in order to deal with potential endogeneity problems the average price elasticity of demand covering the years 2010 2014 is about 0 43 and our results point to a decline in its absolute value over time

introducing a new currency government policy and prices abstract the aim of this article is to study the introduction of a new fiat currency within a dual currency divisible goods search model the government using price control or legal tender laws can affect the equilibrium price levels of two domestic currencies with the goal of driving the old currency out of circulation and replacing it with a new one it is shown that some equilibrium solutions that exist in a laissez faire environment disappear with government monitoring additionally when the old currency is made illegal its equilibrium value is affected differently by public measures such as conversion tax and redistribution policies finally if the enforcement power of legal tender laws is strong enough the old currency cannot be more valuable than the new one and the probability that it changes hands in trade when introducing lotteries cannot be smaller than one

a model of the international monetary system we propose a simple model of the international monetary system we study the world supply and demand for reserve assets denominated in different currencies under a variety of scenarios a hegemon vs a multipolar world abundant vs scarce reserve assets a gold exchange standard vs a floating rate system we rationalize the triffin dilemma which posits the fundamental instability of the system as well as the common prediction regarding the natural and beneficial emergence of a multipolar world the nurkse warning that a multipolar world is more unstable than a hegemon world and the keynesian argument that a scarcity of reserve assets under a gold standard or at the zero lower bound is recessionary our analysis is both positive and normative

the real time price elasticity of electricity the real time price elasticity of electricity contains important information on the demand response of consumers to the volatility of peak prices despite the importance empirical estimates of the real time elasticity are hardly available this paper provides a quantification of the real time relationship between total peak demand and spot market prices we find a low value for the real time price elasticity which may partly be explained from the fact that not all users observe the spot market price if we correct for this phenomenon we find the elasticity to be fairly low for consumers currently active in the spot market if this conclusion applies to all users this would imply a limited scope for government intervention in supply security issues

the transactions demand for money in the presence of currency substitution evidence from vietnam currency substitution the use of foreign money to finance transactions between domestic residents is widespread in low income and transition economies traditionally however empirical models of the demand for money tend to concentrate on the portfolio motive for holding foreign currency while maintaining the assumption that the income elasticity of demand for domestic money is invariant to the degree of currency substitution a simple re specification of the demand for money is offered which more accurately reflects the process of currency substitution by allowing for a variable income elasticity of demand for domestic money this specification is estimated for vietnam in the 1990s using a standard cointegration framework evidence is found for currency substitution only in the long run but well defined wealth effects operating in the short run

non exclusive conventions and social coordination we study the long run outcome when communities with different conventions interact we introduce the notion of non exclusive conventions to model the idea that by incurring some additional costs agents can remain flexible and hence coordinate their activities more successfully we show that if these costs of flexibility are low high and interaction is local then the pareto efficient risk dominant convention prevails in both communities at intermediate cost levels the conventions coexist we also show that the importance of relative size of the two communities varies across interaction structures journal of economic literature classification

international monetary trade and the law of one price abstract we endogenize circulation of currencies and price formation in a decentralized trading environment with two countries and two currencies in equilibrium sellers of homogeneous goods may post prices in the national or also in the foreign currency given unobservable buyers valuations we prove that under different monetary regimes the absence of well integrated international goods markets doesn t necessarily imply a violation of the law of one price we also illustrate the behavior of prices across regimes characterized by different degrees of monetary integration

the emergence of economic organization abstract a model of decentralized markets is studied in which transactors follow simple adaptive rules transactions are coordinated by specialist trading firms that bear the costs of market disequilibrium starting from an initially autarkic situation in which none of the institutions that support exchange exist computer simulation shows that for a wide range of parameter values a fully developed market economy will emerge spontaneously moreover in virtually every case where a market economy develops one of the commodities traded will emerge as a universal medium of exchange being traded by every firm and changing hands in every act of exchange

institutions of foreign exchange settlement in a two country model fujiki 2003 extends the freeman 1996 model to show that when combined an elastic money supply in the foreign exchange market and an elastic money supply in the domestic credit market yield efficiency gains in monetary equilibrium this paper discusses whether three other institutional designs could achieve the same improvement in efficiency 1 a private arrangement based on a payment versus a payment settlement standard supported by central banks free intraday credit 2 a financial institution that provides a negotiable certificate of deposit and 3 a currency union

on the mutuality of interest between bureaus and high demand review committees the case of joint production if we combine my result with those of niskanen and mackay weaver we have three necessary conditions for interests to be mutual first review committees are composed of high demanders of their bureau s outputs the committee seeks to maximize the interests of the group it represents subject to majority approval of the full legislature second the ideal point of the committee must not be too extreme in terms of mix finally the multiproduct bureau must be the least cost institution for public supply of the services in the sense that joint production is efficient for the review committee interested in two or more outputs if any of these does not hold the interests of the bureau and its review committee diverge the incentives for the bureau to expand across outputs without regard to efficiency means that in general we could expect the bureau to perceive the review committee as an adversary because for the committee efficiency in production is an important consideration what are the implications of this result there must exist an optimal structure for bureaucratic production of services further there exist substantial incentives for discovering and implementing this structure when legislators create bureaus diseconomies of scope imply separate bureaus are better economies of scope the opposite if committees optimally structure the bureaucracy in accordance with this result they ensure that interests do not diverge so we see that the initial design of bureaucratic organization may be more important than was previously recognized and calls for closer examination

evolutionary stability and media of exchange abstract the kiyotaki and wright model 1989 of money as a medium of exchange is analyzed within an evolutionary framework it is shown that fundamental speculative and polymorphic states can all be stable and that there may exist a multiplicity of stable states stringent assumptions regarding information and rationality are therefore unnecessary in order to explain the use of money as a medium of exchange even when the existence of a stable medium requires some individuals to trade their production good for one with a higher storage cost or when otherwise identical individuals must adopt different exchange strategies

financial intermediation international risk sharing and reserve currencies abstract i model the equilibrium risk sharing between countries with varying financial development the most financially developed country takes greater risks because its financial intermediaries deal with funding problems better in good times the more financially developed country consumes more and runs a trade deficit financed by the higher financial income that it earns as compensation for taking greater risk during global crises it suffers heavier losses its currency emerges as the reserve currency because it appreciates during crises thus providing a good hedge i provide evidence that financial net worth plays a crucial role in understanding this asymmetric risk sharing jel e44 f14 f32 g01 g15 g21

the merit order effect a detailed analysis of the price effect of renewable electricity generation on spot market prices in germany the german feed in support of electricity generation from renewable energy sources has led to high growth rates of the supported technologies critics state that the costs for consumers are too high an important aspect to be considered in the discussion is the price effect created by renewable electricity generation this paper seeks to analyse the impact of privileged renewable electricity generation on the electricity market in germany the central aspect to be analysed is the impact of renewable electricity generation on spot market prices the results generated by an agent based simulation platform indicate that the financial volume of the price reduction is considerable in the short run this gives rise to a distributional effect which creates savings for the demand side by reducing generator profits in the case of the year 2006 the volume of the merit order effect exceeds the volume of the net support payments for renewable electricity generation which have to be paid by consumers

currency composition of foreign exchange reserves abstract this paper analyses the factors that govern the choice of the currency composition of official foreign exchange reserves first we introduce a new panel dataset on the key currencies in foreign exchange reserves of about 60 economies in the 1999 2017 period second we show that the currency composition of reserves relates strongly to the co movement of the domestic currency with key currencies and the currency invoicing of trade these factors represent attributes of the dollar or the euro rather than of the united states or the euro area they exert about equal effects on the currency composition of foreign exchange reserves we demonstrate that these findings are robust to a host of other possible factors

a model of a currency shortage abstract until the mid 19th century shortages of currency were common moreover a frequent policy response was a prohibition on the export of coins we use a random matching model with indivisible money to explain a shortage and to judge the desirability of a prohibition on the export of coins the model although extreme in many regards represents better than earlier models a demand for outside money and the problems that arise when that money is indivisible it can also rationalize a prohibition on the export of money

a unified framework for monetary theory and policy analysis search theoretic models of monetary exchange are based on explicit descriptions of the frictions that make money essential however tractable versions of these models typically make strong assumptions that render them ill suited for monetary policy analysis we propose a new framework based on explicit micro foundations within which macro policy can be studied the framework is analytically tractable and easily quantifiable we calibrate the model to standard observations and use it to measure the cost of inflation we find that going from 10 percent to 0 percent inflation is worth between 3 and 5 percent of consumption much higher than previous estimates

key currency status an exorbitant privilege and an extraordinary risk abstract what are the costs and benefits of the dollar s status as the key currency in the international monetary system here we present a calibrated two country model in which all exports are invoiced in the key currency and government bonds denominated in the key currency are held internationally to facilitate trade and as official reserve assets we show that the exorbitant privilege accruing to the key currency country comes from three sources 1 a bond seigniorage that we estimate to be worth about a half a percent of consumption per period to the united states 2 asymmetric responses to exogenous shocks that are worth an additional quarter of a percent of consumption per period and 3 a macroeconomic hegemony in monetary and fiscal policy reflecting the fact that the key currency s policy instruments are more potent but there is also an exorbitant risk to being the key currency country we show that the costs of a potential dumping of key currency bonds are also substantial moreover there appear to be no obvious monetary or fiscal policy responses that would lower the costs significantly

decentralized international exchange traditional models of international trade take place within trading environments in which trade is coordinated by a walrasian auctioneer who instantly matches buyers and sellers in world markets this assertion seems inconsistent with evidence suggesting that trading arrangements seem to economize on transactions costs associated with international trade recognizing these insights we depart from standard models of international trade by incorporating the difficulties in the coordination of exchange within a two country random matching model of international trade we capture a motivation for trade through comparative advantage and interpret trade across economies to be associated with an agent s endogenous choice to participate in foreign markets although an individual may decide to search abroad to obtain additional gains from trade resulting from comparative advantage she is less likely to meet trading partners abroad as search frictions are higher in the foreign country than in the domestic market using this framework we show that international trade is associated with convergence in relative prices across countries we also show that the extent of market frictions in the foreign country affects relative prices the volume of international trade and welfare levels due to market participation externalities associated with international trade we show that a movement from autarky to free trade may actually lower welfare levels we conclude by examining the possible inefficiencies associated with international trade due to the decentralized nature of exchange and the policy implications of our model

analysis of carbon tax efficiency in energy industries of selected eu countries abstract a carbon tax is one of economic policy instruments of environmental protection supposed to contribute to the reduction of greenhouse gas ghg emissions a functional carbon tax aims at incorporating costs for elimination of environmental harm into the pricing decisions in terms of global climate change the carbon tax is usually imposed on the production distribution or consumption of carbon content fossil fuels the main aim of the study is to evaluate the carbon tax environmental effectiveness in the energy industries of selected eu countries namely sweden finland denmark ireland and slovenia to achieve the principal research objective the multiple panel regression method for the selected variables was used the synergy of other environmental policy tools being taken into account control variables employed were emission allowance price household final consumption expenditure corporate investments solid fuel consumption and renewable energy consumption the analysis results suggest that the carbon tax in the energy industry is environmentally efficient an increased tax rate allowing to reduce ghg production which is statistically significantly affected by the consumption of fossil fuels based on the estimated partial regression coefficient 0 01158 raising the carbon tax by one euro per tonne can cut annual per capita emissions by 11 58 kg

risk premia in the german day ahead electricity market revisited the impact of negative prices abstract this paper replicates the study by viehmann 2011 that investigated risk premia in the german day ahead electricity market from october 2005 to september 2008 while estimated sizes of risk premia can be replicated this paper does not reproduce respective standard errors leading to remarkable differences between the reported significance levels an extension with data of preceding years points to further differences with respect to size and statistical significance in addition this paper analyzes the impact of negative prices on risk premia negative electricity prices were introduced in 2008 at the european power exchange epex and in 2013 at the energy exchange austria exaa the results of an econometric analysis suggest that the introduction of negative prices has led to a decrease in risk premia when compared to the period of a positive price regime

indirect double regulation and the carbon etss linking the case of coal fired generation in the eu and china abstract double regulation of carbon emissions is a key policy concern in the context of climate change mitigation the existing literature on double regulation in an emissions trading system ets context has largely focused on the direct type when e g an ets and a carbon tax cover the same entity and has not yet discussed the indirect type when e g the ets and carbon tax cover two related entities in the same production consumption chain this paper seeks to contribute to the literature by identifying indirect double regulation ets tax on the coal fired generation in the eu and china specifically we scrutinized legal documents associated with the coal fired power and further presented the quantitative evidence of double carbon costs from the law economics analysis of indirect double regulation we derived implications of indirect double regulation for the abatement of coal fired power sector in its own jurisdiction and after a hypothetic linkage between the eu ets and chinese national ets for its linked partner in response policy suggestions are provided to mitigate potential competitive distortions but should differentiate distortions by sources

competing currencies in the laboratory we investigate competition between two intrinsically worthless currencies as a result of decentralized interactions between human subjects we design a laboratory experiment based on a simple two country two currency search model to study factors that affect circulation patterns and equilibrium selection

white certificates for energy efficiency improvement with energy taxes a theoretical economic model in this paper we analyze interactions of two energy policy instruments namely a white certificates whc scheme as an innovative policy instrument for energy efficiency improvement and energy taxation these policy instruments differ in terms of objectives and final impacts on the price of electricity we examine the effect of these policy instruments in the electricity sector focusing on electricity producers and suppliers in a competitive market using microeconomic theory we identify synergies between market players and demonstrate the total effect on the electricity price when suppliers internalize the behaviour of producers in their decisions this model refers to an ideal market situation of full liberalization the cases we examine consist of electricity producers with and without a carbon tax electricity suppliers with and without an electricity tax and with whc obligations furthermore we present a parallel implementation of whc for electricity suppliers with carbon tax on electricity producers and an electricity tax with whc obligations to electricity suppliers we demonstrate differences in optimization behaviour of producers and suppliers based on a couple of cases of whc with carbon and electricity taxes various positive and negative effects of both schemes in terms of target achievement and efficiency are present which can lead to an added value of such schemes in the policy mix although uncertainties of outcomes are quite high a basic finding is that in a merit order several parameters can increase final electricity price after the implementation of different policies demand for electricity and electricity supply cost at a large scale and then follow the level of level of obligation for energy saving level of penalty and price of whc representing the marginal costs of energy saving projects the impact magnitude of parameters depends on the values chosen and on the initial position of suppliers i e if their actual behaviour deviates from full compliance with targets

a public choice view on the climate and energy policy mix in the eu how do the emissions trading scheme and support for renewable energies interact abstract in this paper we analyze the rationale for an energy policy mix when the european emissions trading scheme ets is considered from a public choice perspective that is we argue that the economic textbook model of the ets implausibly assumes 1 efficient policy design and 2 climate protection as the single objective of policy intervention contrary to these assumptions we propose that the ets originates from a political bargaining game within a context of multiple policy objectives in particular the emissions cap is negotiated between regulators and emitters with the emitters abatement costs as crucial bargaining variable this public choice view yields striking implications for an optimal policy mix comprising res supporting policies whereas the textbook model implies that the ets alone provides sufficient climate protection our analysis suggests that support for renewable energies 1 contributes to a more effective ets design and 2 may even increase the overall efficiency of climate and energy policy if other externalities and policy objectives besides climate protection are considered thus our analysis also shows that a public choice view not necessarily entails negative evaluations concerning efficiency and effectiveness of a policy mix

playing with money abstract experimental work in monetary economics is usually based on theory that incorporates an infinite horizon yet hard constraints on laboratory sessions lead to finite times when the game must with probability 1 end and then simple backward induction implies monetary equilibria cannot exist hence these experiments cannot evaluate subjects ability to settle on the use of money as a medium of exchange that ameliorates trading frictions as an equilibrium outcome to address this we present some finite horizon games where monetary exchange is an equilibrium outcome and report some experimental results using these games

the international monetary system in the last and next 20 years the last two decades have seen far reaching changes in the structure of the international monetary system europe moved from the european monetary system to the euro china adopted a dollar peg and then moved to a basket band and crawl in 2005 emerging markets passed through a series of crises leading some to adopt regimes of greater exchange rate flexibility and others to rethink the pace of capital account liberalization interpreting these developments is no easy task some observers conclude that recent trends are confirmation of the bipolar view that intermediate exchange rate arrangements are disappearing while members of the fear of floating school conclude precisely the opposite we show that the two views can be reconciled if one distinguishes countries by their stage of economic and financial development among the advanced countries intermediate regimes have essentially disappeared this supports the bipolar view for the group of countries for which it was first developed within this subgroup the dominant movement has been toward hard pegs reflecting monetary unification in europe while emerging markets have also seen a decline in the prevalence of intermediate arrangements these regimes still account for more than a third of the relevant subsample here the majority of the evacuees have moved to floats rather than fixes reflecting the absence of emu like arrangements in other parts of the world among developing countries the prevalence of intermediate regimes has again declined but less dramatically where these regimes accounted for two thirds of the developing country subsample in 1990 they account for a bit more than half of that subsample today as with emerging markets the majority of those abandoning the middle have moved to floats rather than hard pegs the gradual nature of these trends does not suggest that intermediate regimes will disappear outside the advanced countries anytime soon barry eichengreen and raul razo garcia

the empirics of international currencies network externalities history and persistence using a new database for the late nineteenth century when the pound sterling was the world s leading international currency this article provides evidence on the empirical determinants of international currency status we report evidence in favour of the search theoretic models to international currencies using a microeconomic model of currency choice we provide empirical support to strategic externalities we find strong confirmation of the existence of persistence but reject the view that the international monetary system was subject to pure path dependency and lock in effects suggesting that even in the absence of wwi the usd was bound to overtake sterling

pareto improving immigration in an economy with equilibrium unemployment economists from around the industrialized world demonstrate the strength of both theories about the rise of economic inequality that is it the mechanical consequence of changes in such economic fundamentals as technology and demographic parameters and that it is the contingent consequence country specific and time specific changes in institutions they find that though institutions always play a crucial role in shaping inequality and sometimes preventing it still it creeps in

confidence in domestic money and currency substitution i introduction the prevalence of currency substitution cs that is the demand for foreign money by domestic residents has been endemic in several latin american and east european countries as well as some other parts of the world traditional explanations of the phenomenon tend to focus on its association with high levels of domestic inflation foreign money is a convenient hedge against the erosion of purchasing power over time 1 therefore the degrees of cs experienced by different countries are theorized as the consequences of the different monetary policies in those countries in particular a stabilization policy such as a decrease in domestic inflation should lead to a decline or even the elimination of cs this prediction however has not been observed empirically in several instances decreases in inflation to minimal levels subsequent to episodes of high inflation have not reversed the demand for foreign money the persistence or hysteresis in cs has been the subject of many theoretical and empirical studies 2 on the other hand interestingly a complete and rapid elimination of local currency has been rarely observed even with high levels of domestic inflation some theoretical explanations of the observed irreversibility of cs in the literature have focused primarily on the transactions technology associated with the use of two monies guidotti and rodriguez 1992 argue that there are costs associated with switching from the use of one currency to the other once an economy is dollarized these costs deter the switch back to the use of domestic money after inflation has abated uribe 1997 elaborates a similar model of cs hysteresis in which the transactions costs are endogenous in that they are a decreasing function of the aggregate level of cs in the economy sturzenegger 1997 postulates a model in which inflation instigates financial adaptation i e a move away from domestic money to the use of foreign money or other assets and transactions costs associated with cs are assumed to decline with an increase in the denomination of purchases in such a setting certain sectors of the economy become dollarized and reversion to the use of domestic money subseq uent to a decline in inflation need not occur in more general terms dornbuschet al 1990 characterize this process of financial adaptation as a shift in money demand for every rate of inflation there is now a lower demand for domestic money leading to hysteresis alternative explanations of cs have focused on public perceptions regarding various government policies one argument is that stabilization policies such as those leading to a decline in inflation lack credibility and hence are ineffective in rooting out cs melvin and fenske 1992 propose this as one explanation for the persistence of demand for foreign money in bolivia monetary reform in the late 1980s notwithstanding a similar conclusion is reached in clements and schwartz 1993 however this argument may imply that persistence in cs is in all likelihood a transitory phenomenon the demand for domestic money will rise eventually as stabilization policies earn credibility in tandon and wang 1999 yet another government policy the imposition of costly capital controls is brought to bear on the persistence of cs in an inflationary economy in such an environment cs arises and persists from balancing between the expected cost of capital controls associated with foreign currency and the loss in purchasing power associated with inflationary domestic money the principal contribution of the present article is the incorporation of agents subjective expectations and beliefs as the key determinant underlying the relative demand for domestic and foreign currencies we study a model in which the confidence in domestic money is partial as in weil 1987 and bertocchi and wang 1995 and extend the previous analysis to a two money environment

mars or mercury the geopolitics of international currency choice we assess the role of economic and security considerations in the currency composition of international reserves we contrast the mercury hypothesis that currency choice is governed by pecuniary factors familiar to the literature such as economic size and credibility of major reserve currency issuers against the mars hypothesis that this depends on geopolitical factors using data on foreign reserves of 19 countries before world war i for which the currency composition of reserves is known and security alliances proliferated our results lend support to both hypotheses we find that military alliances boost the share of a currency in the partner s foreign reserve holdings by 30 percentage points these findings speak to current discussions about the implications of possible u s disengagement from global geopolitical affairs in a hypothetical scenario where the u s withdraws from the world our estimates suggest that long term u s interest rates could rise by as much as 80 basis points assuming that the composition of global reserves changes but their level does not

asymmetric government transaction policies and currencies substitutability abstract when two countries are identical and perfectly integrated symmetric government transaction policies are necessary and sufficient for perfect substitutability between currencies when government transaction policies are symmetric and integration is not perfect the national money is more valued within borders

liquidity a new monetarist perspective this essay surveys the new monetarist approach to liquidity work in this literature strives for empirical and policy relevance plus rigorous foundations questions include what is liquidity is money essential in achieving desirable outcomes which objects can or should serve in this capacity when can asset prices differ from fundamentals what are the functions of commitment and collateral in credit markets how does money interact with credit and intermediation what can and should monetary policy do the research summarized emphasizes the micro structure of frictional transactions and studies how institutions like monetary exchange credit arrangements or intermediation facilitate the exchange process

pairwise trade asset prices and monetary policy abstract we construct a search theoretic model where fiat money coexists with real assets and all assets can be used as a media of exchange the terms of trade in bilateral matches are determined by a pairwise pareto efficient pricing mechanism we do not have to appeal to exogenous liquidity constraints to generate asset prices that are consistent with the following facts i fiat money can be valued despite being dominated in its rate of return ii real assets with identical dividend flows can have different rates of return and iii an increase in inflation raises asset prices lowers their returns and widens the rate of return differences between assets on the normative side we show that there is a range of inflation rates that implement the first best allocation

commitment and the adoption of a common currency in contrast to mundell s inquiry on the optimality of currency areas this article aims to understand under what circumstances a pareto dominant monetary union will be established using a multicountry overlapping generations model we highlight gains from monetary union arising from reduced transactions costs and lower inflation despite these gains countries acting independently will impose barriers to exchange through local currency restrictions thereby creating transactions costs and providing an incentive for inflation therefore the gains from monetary union are most likely to be lost without collective effort