short term optimal wind power generation capacity in liberalized electricity markets mainly because of environmental concerns and fuel price uncertainties considerable amounts of wind based generation capacity are being added to some deregulated power systems the rapid wind development registered in some countries has essentially been driven by strong subsidizing programs since wind investments are commonly isolated from market signals installed wind capacity can be higher than optimal leading to distortions of the power prices with a consequent loss of social welfare in this work the influence of wind generation on power prices in the framework of a liberalized electricity market has been assessed by means of stochastic simulation techniques the developed methodology allows investigating the maximal wind capacity that would be profitably deployed if wind investments were subject to market conditions only for this purpose stochastic variables determining power prices are accurately modeled a test system resembling the size and characteristics of the german power system has been selected for this study the expected value of the optimal short term wind capacity is evaluated for a considerable number of random realizations of power prices the impact of dispersing the wind capacity over statistical independent wind sites has also been evaluated the simulation results reveal that fuel prices installation and financing costs of wind investments are very influential parameters on the maximal wind capacity that might be accommodated in a market based manner

industrial strategy for late starters the experience of kenya tanzania and zambia based on the existing literature and the circumscribed data base this paper assesses the extent and nature of industrialization in three african countries after a promising start the drive to industrialize is now faltering the record is influenced much more by the colonial legacy and the macro economic situation of each country than by industrial policy it is clear that future industrial advance will depend heavily on the pace of rural development catering to world markets is not likely to provide a major stimulus for the industrial sector of many african economies in the near term future

key findings from the core north american scenarios in the emf34 intermodel comparison abstract within canada mexico or the united states policy making organizations are evaluating energy markets and energy trade within their own borders often by ignoring how these countries energy systems are integrated with each other these analytical gaps provided the main motivation for the energy modeling forum emf 34 study on north american energy integration and trade this paper compares north american results from 17 models and discusses their policy motivation oil and natural gas production in the three major countries are modestly sensitive to crude oil and natural gas price changes although these elasticities are below unity carbon taxes displace coal and some natural gas with renewables within all three power markets lower natural gas prices replace coal and some renewables with natural gas within electric generation higher intermittent renewable penetration in the power sector displaces coal and some natural gas a key conclusion is that much remains to be done in integrating future analyses and in sharing and improving the quality and consistency of the underlying data

whom can we trust to run the fed theoretical support for the founders views abstract the federal reserve has been called a bizarre policymaking structure this paper documents and formalizes a historical argument that the fed s structure was a response to public conflict over inflation s redistributive powers the paper shows that in the face of conflict over redistributive inflation policy by majority can lead to policy that is worse even for the majority than obvious alternatives in balancing the interests for and against surprise inflation the fed s structure can lead to a better outcome

inflation and reputation in many macroeconomic models with rational expectations optimal policy is time inconsistent and therefore announced policy may not be credible this paper models the government s credibility explicitly using kreps and wilson s analysis time consistent optimal government policy emerges as a sequential equilibrium in a repeated game this policy is at least as good as the inconsistent optimal policy and dominates the consistent policy when reputational effects are ignored thus the analysis resolves the problem of specifying a credible optimal policy in such models the results show why attempts to disinflate may lead to recession even with perfectly flexible prices this abstract was borrowed from another version of this item

monetary policy committees individual and collective reputations this paper looks at the incentives of individual members of a monetary policy committee to gain a reputation for inflationary toughness i show a policy maker can have more or less incentive to build a reputation when part of a group but group policy making leads to higher expected social welfare not publishing individuals votes raises the temptation to inflate and lowers expected social welfare if the culture or rules of a central bank puts more weight on senior policy makers the incentive to build a reputation is greater but expected social welfare may be higher or lower

central bank independence economic behavior and optimal term lengths the authors parameterize central bank independence in terms of partisanship and term length focusing on the implications of alternative policy structures for real economic activity while long terms of office for the central banker can reduce the role of electoral surprises term lengths that are too long are costly if societal preferences are subject to permanent shifts the appointment of a conservative central banker increases the optimal term length and leads to lower average inflation but need not increase the volatility of output copyright 1996 by american economic association

macroeconomic policy in a two party system as a repeated game this paper considers the interaction of two parties with different objectives concerning inflation and unemployment and rational and forward looking wage setters if discretionary policies are followed an economic cycle related to the political cycle results in equilibrium this cycle is significantly different from the traditional political business cycle reputational mechanisms due to the repeated interaction of the two parties and the public or commitments to a common policy rule can improve upon the discretionary outcome by reducing or eliminating the magnitude of the economic fluctuations

central bankers in government appointed committees abstract i study the policy choices of members of a central bank committee who are appointed by the government central bankers balance their desire to protect the central bank s reputation against their interest to be reappointed committees can be more successful than single central bankers at reducing inflation and insulating policy from government pressures these gains are only achieved if the turnover rate of committee members is low and the committee is small the former is associated with a low risk of being replaced for not supporting the government s preferred policy the latter meanwhile implies high probability that a single vote affects policy making any individual member more weary of potentially affecting the central bank s reputation through his vote

renewable electricity policies heterogeneity and cost effectiveness abstract renewable electricity policies promote investment in renewable electricity generators and have become increasingly common around the world because of intermittency and the composition of other generators in the power system the value of certain renewable particularly wind and solar varies across locations and technologies this paper investigates the implications of this heterogeneity for the cost effectiveness of renewable electricity policies a simple model of the power system shows that renewable electricity policies cause different investment mixes policies also differ according to their effect on electricity prices and both factors cause the cost effectiveness to vary across policies we use a detailed long run planning model that accounts for intermittency on an hourly basis to compare the cost effectiveness for a range of policies and alternative parameter assumptions the differences in cost effectiveness are economically significant where broader policies such as an emissions price outperform renewable electricity policies

environmental accounting for pollution in the united states economy this study presents a framework to include environmental externali ties into a system of national accounts the paper estimates the air pollution damages for each industry in the united states an inte grated assessment model quantifies the marginal damages of air pol lution emissions for the us which are multiplied times the quantity of emissions by industry to compute gross damages solid waste com bustion sewage treatment stone quarrying marinas and oil and coal fired power plants have air pollution damages larger than their value added the largest industrial contributor to external costs is coal fired electric generation whose damages range from 0 8 to 5 6 times value added jel e01 l94 q53 q56

agricultural development and the size distribution of personal income the tropical african experience abstract we use data from a sample of countries in tropical africa to investigate the relationship between relative income and growth rate of the agricultural sector and income inequality we find that an increase in the income of the agricultural sector relative to that of the non agricultural sector decreases income inequality the growth rate of agricultural production and the proportion of the labor force in the non agricultural sector were also found to be negatively correlated with income inequality

a theory of collective reputations with applications to the persistence of corruption and to firm quality the paper is a first attempt at modelling the idea of group reputation as an aggregate of individual reputations a member s current incentives are affected by his past behaviour and because his track record is observed only with noise by the group s past behaviour as well the paper thus studies the joint dynamics of individual and collective reputations and derives the existence of stereotypes from history dependence rather than from a multiplicity of equilibria or from the existence of a common trait as is usually done in the literature it shows that new members of an organization may suffer from an original sin of their elders long after the latter are gone and it derives necessary and sufficient conditions under which group reputations can be rebuilt last the paper applies the theory to analyse when a large firm can maintain a reputation for quality 1 collective reputations collective reputations play an important role in economics and the social sciences countries ethnic racial or religious groups are known to be hard working honest corrupt hospitable or belligerent some firms enjoy substantial rents from their reputations for producing high quality products some departments are reported to treat their faculty or students fairly the paper is a first attempt at modelling the idea of group reputation as an aggregate of individual reputations a member s current incentives are affected by her past behaviour and because her track record is observed only with noise by the group s past behaviour as well the paper studies the joint dynamics of individual and collective reputations in a model in which current generations are progressively replaced by new ones and derives the existence of stereotypes from history dependence rather than from a multiplicity of equilibria or from the existence of a common trait as is usually done in the literature see section 2 for a detailed comparison with the literature it shows that new members of an organization may suffer from an original sin of their elders long after the latter are gone and it derives necessary and sufficient conditions under which group reputations can be rebuilt last the paper applies the theory to analyse when a large firm can maintain a reputation for quality let us spell out the building blocks of our theory in more detail a a group s reputation is only as good as that of its members each member is characterized by individual traits such as talent diligence or honesty past individual behaviour conveys information about these traits and generates individual reputations

economic and technical challenges of flexible operations under large scale variable renewable deployment abstract fundamental characteristics of solar and wind power have generated controversy about their economic competitiveness and appropriate techniques for assessing their value this research presents an approach to quantify the economic value of variable renewable capacity and demonstrates its dependence on renewable deployment levels regional resource endowments fleet flexibility and trade assumptions it assesses economic and technical impacts of large scale renewable penetration by linking two models representing electric sector investments and detailed operations model results for california and texas suggest that operational constraints and costs of dispatchable generators e g minimum load levels ramping limits startup costs can impact renewable integration costs but the temporal and spatial variability of solar and wind are larger determinants of their value restrictions on transmission and regional coordination in capacity planning and dispatch decrease the economic value of variable renewable energy highlighting the potential roles of market design and trade energy storage is shown to be a valuable balancing asset at higher solar and wind penetration levels but potential revenues diminish with increased storage deployment

the effectiveness of structural adjustment lending initial evidence from malawi abstract the world bank s new programs of structural adjustment lending are likely to prove most effective with those governments which demonstrate shared ideals in their approach to economic adjustment and policy reform malawi has long been regarded as a country placing great reliance on the market in resource allocation showing restraint in public sector expansion and retaining a strong export orientation the balance of payments difficulties and the deterioration in economic circumstances which began in 1980 did not arise solely from external shocks but the structural adjustment lending programs introduced in 1981 as a means of easing the painful reform process found root in a fertile and responsive policy environment this paper chronicles the first two sals to malawi reviewing in particular the specific policy reforms advocated and required by the bank the extent of their implementation and the provisional effects on the malawi economy

monetary co operation and economic growth in africa comparative evidence from the cfa zone countries this article compares economic growth performance of ten african countries all members of the cfa monetary zone with that of 23 non zone sub saharan african ssa countries our descriptive results suggest that overall african economies have experienced similar growth trends which are higher in the 1970s than the 1980s however contrary to previous studies disaggregated comparison of the cfa with the ssa indicate that no significant growth differences exist between these economies moreover our empirical findings suggest that monetary expansion and capital formation have positive impacts on output growth whereas inflation and government spending show negative effects in sum although participating in a monetary union has not necessarily resulted in faster output growth it has enabled the cfa countries to better control price fluctuations and monetary expansion

u s energy sector impacts of technology innovation fuel price and electric sector co2 policy results from the emf 32 model intercomparison study abstract we study the impact of fuel prices technology innovation and a co 2 emissions reduction policy on both the electric power and end use sectors by comparing outputs from four u s energy economic models through the year 2050 achieving innovation goals decreases co 2 emissions in all models regardless of natural gas price due to increased energy efficiency and low carbon generation becoming more cost competitive for the models that include domestic natural gas markets achieving innovation goals lowers wholesale electricity prices but this effect diminishes as projected natural gas prices increase higher natural gas prices lead to higher wholesale electricity prices but fewer coal capacity retirements a co 2 electric power sector emissions cap influences electric sector evolution under reference technology assumptions but has little to no incremental influence when added to innovation goals long term meeting innovation goals achieves a generation mix with similar co 2 emissions compared to the co 2 policy but with smaller increases to wholesale electricity prices in the short term the relative effect on wholesale prices differs by model finally higher natural gas prices achieving innovation goals and the combination of the two increases the amount of renewable generation that is cost effective to build and operate while slowing the growth of natural gas fired generation which is the predominant generation type in 2050 under reference conditions

electric sector policy technological change and u s emissions reductions goals results from the emf 32 model intercomparison project the energy modeling forum emf 32 study compares a range of coordinated scenarios to explore implications of u s climate policy options and technological change on the electric power sector harmonized policy scenarios including mass based emissions limits and various power sector only carbon tax trajectories across 16 models provide comparative assessments of potential impacts on electric sector investment and generation outcomes emissions reductions and economic implications this paper compares results across these policy alternatives including a variety of technological and natural gas price assumptions and summarizes robust findings and areas of disagreement across participating models under a wide range of policy technology and market assumptions model results suggest that future coal generation will decline relative to current levels while generation from natural gas wind and solar will increase though the pace and extent of these changes vary by policy scenario technological assumptions region and model climate policies can amplify trends already under way and make them less susceptible to future market changes the model results provide useful insights to a range of stakeholders but future research focused on intersectoral linkages in emission reductions e g the role of electrification effects of energy storage and better coverage of bioenergy with carbon capture and storage beccs can improve insights even further

balance of payments output and prices in tanzania abstract this paper examines the relationship between changes in international reserves and changes in output prices and monetary balances in tanzania using annual data for 1962 86 a short run macroeconomic model of the balance of payments is formulated and estimated in which output and prices are endogenized and the behaviors of the monetary and fiscal authorities are explicitly modeled the estimation results are used to examine the relative effectiveness of alternative policy instruments on the key macroeconomic variables of the model the monetary variables appear to have played a relatively significant role in the development of prices but they were only marginally significant in the process of balance of payments adjustment the simulation results indicate that a tradeoff existed between faster economic growth and better balance of payments performance

policy boards and policy smoothing partisan politics and random election outcomes generate policy uncertainty and partisan business cycles to reduce policy uncertainty society must design the policy making environment to overcome electoral uncertainty and partisanship i show that delegating policy to an independent policy board with discretionary powers will produce substantial policy smoothing and lower policy uncertainty relative to a simple model in which elected officials set policy board members are chosen in a partisan noncooperative environment yet in the benchmark model policy variability is eliminated and the cooperative bargaining solution is replicated

designing monetary policy committees we integrate monetary policy making by committee into a new keynesian model to assess the consequences of the committee s institutional characteristics for inflation output and welfare our analysis delivers the following results first we demonstrate that transparency about the committee s future composition is typically harmful second we show that short terms for central bankers lead to effective inflation stabilization at the expense of comparably high output variability third larger committees generally allow for more efficient stabilization of inflation but possibly for less efficient output stabilization fourth large committees and short terms are therefore socially desirable if the weight on output stabilization in the social loss function is low fifth we show that a central banker with random preferences may be preferable to a central banker who shares the preferences of society

central banking as a political principal agent problem i introduction conventional wisdom holds that during election periods political leaders have incentives to misuse policy instruments to enhance their chances of reelection rogoff and sibert 1988 construct a rational political economy model of monetary policy based on this theme 1 the results of their model can be interpreted in the following way 2 society elects a leader every other period whose competence affects the level of output in the economy and private agents will tend to vote for the incumbent if the level of output is expected to be higher than that which can be provided by an unknown challenger voters have imperfect information regarding the politician s true impact on output and exogenous shocks to output and consequently cannot disentangle the effects of one from the other in an election period this asymmetry of information gives the incumbent an incentive to expand output through the use of inflationary monetary policy in order to appear more competent than he really is however rational voters are aware of this incentive to inflate and adjust their expectations such that in equilibrium no gain in output occurs and the economy suffers from excessive inflation an implication of the rogoff sibert model is that unless a society does away with elections as a way to choose policymakers excessive inflation and a political inflation cycle will be an unavoidable cost of democracy however societies can try and have tried to avoid these ill effects by taking the power of money creation away from the elected officials and giving it to an appointed independent central banker who will presumably pursue the public good but can this approach actually work the problem with this proposal is that the central bankers well being in many respects reappointment post central bank employment opportunities avoidance of public criticism etc often hinges on pleasing their political benefactors giving the central bankers incentives to act in the interest of elected officials 3 as a result the central banker could pursue objectives different from society s and may actually function as a veil for the elected policymaker in the real world this veil is not complete but partial and hence we can characterize the relationship between the monetary authority and society as a principal agent problem the advantage of delegating power to an appointed central banker and then erecting appropriate institutions is that the inflation problems may be resolved without abandoning the electoral process in this paper we develop a rational political business cycle model that starts from the foundations laid down by rogoff and sibert we depart from their model by having monetary policy delegated to a central banker who is appointed by the elected leaden the concern about reappointment is what motivates the agency problem the central banker would like to be reappointed and this desire leads her to partially accommodate the wishes of the current administration which in turn may not coincide with the desires of the electorate we then analyze the problem faced by a central banker who is concerned about her own selfinterest as well as social well being it is this feature that turns the setting of monetary policy into a political principal agent problem the contributions of our approach to modelling the agency problem of central banking are 1 it explicitly incorporates reappointment concerns into the decision process of the central banker which heretofore has not been done in the literature and 2 we explicitly model the source of the agency problem unlike previous research that simply assumes an agency problem exists our key results are as follows in equilibrium the pursuit of her own self interest leads the central banker to create a socially inefficient inflation bias while rogoff and sibert also obtain this result our explicit functionalform model allows us to analyze this bias in more detail and tie it directly to the strength of the relationship between the central banker and the current administration

an argument in favor of long terms for central bankers drawing on the canonical new keynesian model we assess the impact of central bankers term duration on governments appointment choices we show that longer terms induce the government to appoint more conservative central bankers which is socially desirable

structural change in malawi since independence consequences of a development strategy based on large scale agriculture abstract this paper investigates the nature of the structural change which has occured in the malawian economy since independence and identifies key policies pursued by the government which it is argued have been decisive in shaping this development the salient feature of structural change is shown to be the rapid growth of large scale agriculture associated with an equally rapid transfer of labour into wage employment and a decline in the importance of peasant production the implications of these changes for living standards and future development and policy are considered

the privatization of agricultural trading in malawi abstract this paper examines the privatization of smallholder agricultural output marketing in malawi despite problems with implementing the privatization program including serious disruptions in the supply of maize the staple food the move toward greater private sector involvement in agricultural marketing has been successful nonetheless several medium term development issues e g food security and buyer and seller of last resort functions need to be addressed in the context of relations between the marketing parastatal admarc and the private sector before the policy change can be regarded as fully successful

the dynamic in efficiency of monetary policy by committee this paper develops a model where the value of the monetary policy instrument is selected by a heterogenous committee engaged in a dynamic voting game committee members differ in their institutional power and in certain states of nature they also differ in their preferred instrument value preference heterogeneity and concern for the future interact to generate decisions that are dynamically inefficient and inertial around the previously agreed instrument value this model endogenously generates autocorrelation in the policy variable and helps explain the empirical observation that the distribution of actual interest rate changes has a mode of zero

estimating the value of wind energy using electricity locational marginal price abstract there is an increasing interest in adding renewables such as wind to electricity generation portfolios in larger amounts as one response to concern about atmospheric carbon emissions from our energy system and the resulting climate change most policies with the aim of promoting renewables e g rps fit do not explicitly address siting issues which for wind energy are currently approached as the intersection of wind resource land control and transmission factors this work proposes the use of locational marginal price lmp the location and time specific cost of electricity on the wholesale market to signal locations where generation can address electricity system insufficiency after an examination of the spatial and temporal behavior of lmp in michigan over the first two years of wholesale market operation this work combines lmp with wind speed data to generate a value metric high value sites in michigan tend to be sites with higher wind speeds with the bulk of value accruing in the fall and winter seasons

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

the market value of variable renewables the effect of solar wind power variability on their relative price this paper provides a comprehensive discussion of the market value of variable renewable energy vre the inherent variability of wind speeds and solar radiation affects the price that vre generators receive on the market market value during windy and sunny times the additional electricity supply reduces the prices because the drop is larger with more installed capacity the market value of vre falls with higher penetration rate this study aims to develop a better understanding on how the market value with penetration and how policies and prices affect the market value quantitative evidence is derived from a review of published studies regression analysis of market data and the calibrated model of the european electricity market emma we find the value of wind power to fall from 110 of the average power price to 50 80 as wind penetration increases from zero to 30 of total electricity consumption for solar power similarly low value levels are reached already at 15 penetration hence competitive large scale renewable deployment will be more difficult to accomplish than as many anticipate

the cambridge group and the developing countries the policy prescriptions of the cambridge economic policy group cepg for the united kingdom are well known they involve all round protection of british industry that would allegedly permit reaching simultaneously higher output levels lower unemployment rates and lower inflation rates since first presented in february 1975 the views of the cambridge group have been several times and have been repeatedly subjected to criticism 1

a bargaining model of partisan appointments to the central bank abstract in this paper a bargaining model is developed to analyze the appointment of central bankers in a two party political system the major results of the paper are 1 the party in power will appoint partisans early on but later appointments will be increasingly moderate in their views concerning monetary policy 2 changing the timing of the appointment of the board chairman from the end of a president s term in office to the first period of the president s term will lead to more partisan monetary policy 3 in equilibrium nominations to the board are not rejected thus confirmation hearings appear to be nothing more than a rubber stamp process 4 lengthening the terms on the board relative to the electoral cycle will lead to more moderate appointments to the central bank and a reduction in partisan policymaking

reputation in a model of monetary policy with incomplete information abstract previous models of rules versus discretion are extended to include uncertainty about the policymaker s type when people observe low inflation they raise the possibility that the policymaker is committed to low inflation type 1 this enhancement of reputation gives the uncommitted policymaker type 2 an incentive to masquerade as the committed type in the equilibrium the policymaker of type 1 delivers surprisingly low inflation with corresponding costs to the economy over an extended interval the type 2 person mimics this outcome for awhile but shifts eventually to high inflation this high inflation is surprising initially but subsequently becomes anticipated

committees with supermajority voting yield commitment with flexibility abstract a fundamental problem for government is how to combine commitment to certain policies with the flexibility required to adjust them when needed rogoff 1985 rogoff k 1985 the optimal degree of commitment to an intermediate monetary target q j econ 100 4 1169 1189 showed that a way to strike the right balance is to appoint an optimally conservative policy maker in real life however policy makers also have power over decisions where optimal plans are time consistent so delegating to a conservative person could be undesirable a flexible delegation device can be found in a large committee of randomly appointed members voting over policy after observing a shock when facing dynamic inconsistency under a single crossing property there exists a supermajority rule that implements the population median s optimally conservative policy maker with certainty another single crossing property guarantees that if simple majority voting is used to select the voting rule that will govern policy choice the supermajority preferred by the median is chosen for problems where dynamic inconsistency vanishes the committee will choose to make decisions by simple majority implementing median outcomes an application to monetary policy is developed we show that the optimal supermajority is higher when dynamic inconsistency is more severe when preferences are more homogeneous and when the economy is less volatile

perspectives and problems of development in sub saharan africa this paper analyzes the initial conditions for development facing post colonial african nations outlines alternative development strategies followed by different groups of countries and assesses the consequences for growth and poverty alleviation on the basis of this diagnosis the paper outlines a number of policy priorities for the future including greater research extension and infrastructure support for smallholder agriculture an improvement in the overall structure of incentives in favor of agriculture a more realistic urban formal sector wage structure to reduce rural urban migration and foster a more internationally competitive manufacturing sector and greater emphasis on surplus generation through government budgets and parastatal enterprises

pricing policies in africa with special reference to agricultural development in malawi abstract microeconomic policy in the controlled market economy of malawi rests upon three fundamental balances these are the food export balance the rural urban income linkage and the domestic donor contribution to development capital there are therefore six major domestic polarities food and exports rural and urban domestic and donor within the microeconomic system any change in one will necessitate changes in the other five or the triplex becomes unbalanced this is the rigidity in the capacity of small economies to adjust

monetary policy by committee consensus chairman dominance or simple majority this paper studies the theoretical and empirical implications of monetary policy making by committee under four different voting protocols the protocols are a consensus model where a supermajority is required for a policy change an agenda setting model where the chairman controls the agenda a dictator model where the chairman has absolute power over the committee and a simple majority model where policy is determined by the median member these protocols give preeminence to different aspects of the actual decision making process and capture the observed heterogeneity in formal procedures across central banks the models are estimated by maximum likelihood using interest rate decisions by the committees of five central banks namely the bank of canada the bank of england the european central bank the swedish riksbank and the u s federal reserve for all central banks results indicate that the consensus model fits actual policy decisions better than the alternative models this suggests that despite institutional differences committees share unwritten rules and informal procedures that deliver observationally equivalent policy decisions

credibility and flexibility with independent monetary policy committees independent monetary policy committees are a simple way of attaining relatively low inflation without completely sacrificing an activist role for monetary policy if central bankers types are unknown then for a wide range of parameters an independent committee achieves higher social welfare than either a zero inflation rule or discretionary policy conducted by an opportunistic central banker a key reason for the committee s superior performance is that committee members are relatively likely to opt for low inflation and building a reputation when shocks are small when large shocks hit the economy the incentive to react outweighs the reputationbuilding benefit

electric sector capacity planning under uncertainty climate policy and natural gas in the us abstract this research investigates the dynamics of capacity planning and dispatch in the us electric power sector under a range of technological economic and policy related uncertainties using a two stage stochastic programming approach model results suggest that the two most critical risks in the near term planning process of the uncertainties considered here are natural gas prices and the stringency of climate policy stochastic strategies indicate that some near term hedging from lower cost wind and nuclear may occur but robustly demonstrate that delaying investment and waiting for more information can be optimal to avoid stranding capital intensive assets hedging strategies protect against downside losses while retaining the option value of deferring irreversible commitments until more information is available about potentially lucrative market opportunities these results are explained in terms of the optionality of investments in the electric power sector leading to more general insights about uncertainty learning and irreversibility the stochastic solution is especially valuable if decision makers do not sufficiently account for the potential of climate constraints in future decades or if fuel price projections are outdated

manufactured goods supply and cash crops in sub saharan africa abstract this paper deals with the impact of manufactured goods supply mainly consumer goods on cash crop expansion in sub saharan africa a close link between agricultural performance and trends of manufactures supply becomes apparent through a descriptive analysis concerning 12 african countries this is confirmed by the econometric analysis undertaken we improve significantly on the results of nerlove s model by adding a variable which reflects manufactures supply moreover a new model taking into account this supply as well as short term price effects represents in an acceptable way the reality of some countries

industrialization and resource allocation in a developing country the case of recent experiences in tanzania abstract this paper examines the problem of allocation of resources in the industrial sector in tanzania during the balance of payments crises since the mid 1970s it is argued that the slow growth of industrial output in the 1970s was aggravated by the failure to shift the utilization of foreign exchange away from capital goods imports for capacity expansion in favour of intermediate inputs for capacity utilization consequently society benefited only moderately from considerable new investments of the 1970s this aspect of misallocation of resources is explained in terms of the role of foreign finance on the one hand and the weak link between macro level and micro level planning on the other

large scale wind power integration and wholesale electricity trading benefits estimation via an ex post approach abstract the integration of large scale wind power has brought about a series of challenges to the power industry but at the same time a number of benefits are being realized among those the ability of wind power to cause a decline in the electricity market prices has been recognized in quantifying this effect some models used in recent years are based on simulations of the market supply side and the price clearing process the accuracy of the estimates depend on the quality of the input data the veracity of the adopted scenarios and the rigorousness of the solution technique in this work a series of econometric techniques based on actual ex post wind power and electricity price data are implemented for the estimation of the impact of region wide wind power integration on the local electricity market clearing prices and the trading savings that stem from this effect the model is applied to the case of spain where the estimated savings are compared against actual credit and bonus expenses to ratepayers the implications and extent of these results for current and future renewable energy policy making are discussed

value of technology in the u s electric power sector impacts of full portfolios and technological change on the costs of meeting decarbonization goals abstract power sector decarbonization is an important pillar of climate mitigation efforts but perspectives differ about the relative competitiveness of generation technologies and how limited portfolio approaches e g where non renewable generation options are prohibited could alter the costs and likelihoods of reaching emissions reduction goals the existing literature on impacts of technological availability and cost on electric sector planning typically use models that do not have sufficient technological spatial and temporal detail to adequately resolve the economic competitiveness of variable renewable energy vis a vis dispatchable generators using a state of the art energy economic model this work examines impacts of technological availability and advanced generation technologies on u s electricity market outcomes across a range of regional market and policy contexts we show that decarbonization costs are 11 76 higher as technological options are removed from consideration incremental compliance costs for a 95 co2 reduction below 2005 levels are roughly twice as high when new nuclear carbon capture equipped units and transmission are not allowed however the economic and technical implications of limited portfolios depend on the market and policy contexts e g costs are higher with stringent targets more extensive end use electrification and lower gas prices and the costs and capabilities of the remaining options the analysis demonstrates how lower temporal and spatial resolution models likely understate the value of technology by omitting key economic and technical features of high variable renewable pathways additionally the analysis quantifies how technological change can lower costs of emissions reductions by 7 73 and how low cost battery storage can provide a hedge against higher costs when technological portfolios are limited