transmission network cost allocation based on circuit theory and the aumann shapley method this paper presents a new method to allocate the costs of the transmission system among generators and loads the allocation is calculated for each branch of the transmission system to identify and quantify the individual responsibility of generators and loads a two step method based on the perfect coupling of the circuit theory with the aumann shapley method is proposed here first to determine the participation of the generators in the costs of the transmission network the generators are modeled as current injections and the loads as impedances second to determine the participation of the loads in the cost of the transmission network the loads are modeled as current sources and the generators as impedances the aumann shapley method and the circuit theory are used to calculate the participation of each real and imaginary current component in the allocation of the costs of the transmission system game by considering them as independent agents the properties of the aumann shapley method ensure equitable allocation and recovery of the total costs numerical results are presented and discussed to demonstrate the applicability of the proposed method

cost efficiency and electricity market structure a case study of oecd countries the oecd electricity sector has witnessed significant institutional restructuring over the past three decades as a consequence many power generation utilities now act as unregulated companies that technically compete to sell power on an open market this paper analyses the performance in term of cost efficiency for electricity generation in oecd power sector while accounting for the impact of electricity market structures we employ the short run cost function in which capital stock is treated as a quasi fixed factor input empirical models are developed for the cost function as a translog form and analysed using panel data of 25 countries during the period 1980 to 2009 we show that it is necessary to model latent country specific heterogeneity in addition to time varying inefficiency the estimated economies of scale are adjusted to take account of the importance of the quasi fixed capital input in determining cost behaviour and long run constant returns to scale are verified for the oecd generation sector the research findings suggest there is a significant impact of electricity market regulatory indicators on cost in particular public ownership and vertical integration are found to have significant and sizable increasing impacts on cost thereby indicating policy lessons on the desirable ways to implement structural electricity generation reforms

adjusting input output models for capacity utilization in service industries abstract the input output i o models assume the stability of economic ratios and regional multipliers over the evaluation period for manufacturing sectors constant multipliers within a short term period may present a reasonable picture of the real world production function tourism industry however is composed of a variety of services in which total output and factor inputs are strongly influenced by capacity utilization cu a conceptual model is proposed in this paper which purports that shifts in cu for perishable services will lead to economies of scale in inputs price changes in the final output capacity constraint on domestic supply and substitution between input factors especially between capital and labor these factors simultaneously modify i o ratios and multipliers traditional i o analysis which assumes constant economic ratios and multipliers will therefore lead to biases in tourism impact estimates especially to value added components as it does not reflect the changing costs of operation in response to shifting supply and demand

primal and dual capacity utilization an application to productivity measurement in the u s automobile industry capacity utilization measures have traditionally been constructed as indexes of actual as compared to potential output this potential or capacity output y can be represented within an economic model of the firm as the tangency between the short and long run average cost curves economic theoretical measures of capacity utilization cu can then be characterized as y y where y is the realized level of output these quantity or primal cu measures allow for economic interpretation they provide explicit inference as to how changes in exogenous variables affect cu additional information for analyzing deviations from capacity production can be obtained by assessing the dual cost of the gap in this article the definitions and representations of primal output and dual cost cu measures are formalized within a dynamic model of a monopolistic firm as an illustration of this approach to characterizing cu measures a model is estimated for the u s automobile industry 1959 1980 and primal and dual cu

multiproduct short run hospital cost functions empirical evidence and policy implications from cross section data economists and policymakers have been interested in hospital costs and the structure of hospital technologies for several decades now early interest was focused on the possibility of scale economies which implied increased efficiency for larger hospitals 6 8 12 13 18 20 while more recent interest has been stimulated by the inflationary spiral of hospital costs 1 15 17 22 as hospital costs have risen important policy questions concerning the impact on costs of the hospitals diagnostic case mix the hospitals admitting physicians the hospitals size and the hospitals efficiency have emerged and researchers have attempted to deal with these issues within the context of increasingly complex econometric models 1 2 5 24 27 however in attempting to analyze these important policy issues researchers have been forced to make two major types of compromises on the one hand appropriate data are often not available for estimating a well specified cost function e g information on admitting physicians and diagnostic case mix are often missing so that problems of specification error often plague the econometric results conversely in using imaginative ways to deal with data problems e g weighting in patient and out patient care to form a single index of hospital services 1 27 or estimating separate cost functions for each department in the hospital 2 researchers sometimes place unrealistic and unnecessary constraints on their econometric models the purpose of this study is to analyze the impact of several of the primary hospital characteristics mentioned above on the short run costs of hospitals within a theoretically consistent framework in the following discussion we also develop the theoretical

on economic inefficiency of european inter tso compensation mechanism abstract economic inefficiency of european inter transmission system operator itc mechanism is demonstrated by means of statistical analysis of a time series of natural quantities production consumption and exchange of energy as well as by devising a simple model that shows that the current system misallocates relevant costs between transmission system operators tsos involved then the reasons for this apparent inefficiency are discussed it is concluded that under existing eu policy rules in electricity sector it is not possible to construct a compensation mechanism that would perform a correct reallocation of external costs incurred by energy transits among interconnected networks operated by different tsos then simple microeconomic models that exhibit a correct compensation of costs with rules of the game set differently than by today s eu regulatory framework are presented

nonparametric measures of scale economies and capacity utilization an application to u s manufacturing abstract an economic measure of scale efficiency is the ratio of the minimum average cost to the average cost at the actual output level of a firm it is easily measured by the ratio of the total cost of this output under the constant and variable returns to scale assumptions this procedure does not identify the output level where the average cost reaches a minimum this paper proposes a nonparametric method of measuring this output level using dea the relation between this efficient production scale the short run physical capacity output and the most productive scale size mpss is also discussed an empirical application using state level data from u s manufacturing is used to illustrate the procedure the dea findings are further analyzed using a smoothed bootstrap procedure

economies of vertical integration in the swiss electricity sector over the last two decades several european nations have introduced reforms to their electricity sector generally these reforms require a legal and functional unbundling of vertically integrated companies these unbundling processes may reduce the possibilities that exist to fruitfully exploit the advantages of vertical integration the goal of this paper is to empirically analyze the presence of economies of scale and vertical integration in the swiss electricity sector economies of vertical integration between electricity production and distribution result from reduced transaction costs better coordination of highly specific and interdependent investments and less financial risk different econometric specifications for panel data including a random effects and a random coefficients model have been used to estimate a quadratic multi stage cost function for a sample of electricity companies the empirical results reflect the presence of considerable economies of vertical integration and economies of scale for most of the companies considered in the analysis moreover the results suggest a variation in economies of vertical integration across companies due to unobserved heterogeneity

quality of service efficiency and scale in network industries an analysis of european electricity distribution quality of service qos is of major economic significance in natural monopoly infrastructure industries in this article we present an efficiency analysis of electricity distribution networks from seven european countries we apply the stochastic frontier analysis method to multi output translog input distance function models to estimate cost efficiency and scale economies we show that introducing the quality dimension into the analysis affects estimated efficiency significantly especially that smaller utilities efficiency seems to decrease our results emphasize that qos should be an integrated part of efficiency and economic analysis of regulated natural monopolies

on the utilisation controversy a theoretical and empirical discussion of the kaleckian model of growth and distribution this paper examines the utilisation controversy around the kaleckian model of growth and distribution we show that the federal reserve data on capacity utilisation which have been used by both sides of this debate are the wrong kind of data for the issue under examination instead a more appropriate measurement can be derived from the data on the average workweek of capital we argue that the long run dynamic adjustment proposed by kaleckian scholars lacks a coherent economic rationale we provide an alternative path towards the endogeneity of the desired utilisation at the micro and macro levels finally we examine the proposed adjustment mechanism econometrically our results verify the endogeneity of the normal utilisation rate

investment options and bargaining power the eurasian supply chain for natural gas we use cooperative game theory to analyze how the architecture of the pipeline network determines the power structure in the supply chain for russian gas if the assessment is narrowly focused on the abilities to obstruct flows in the existing system the main transit countries belarus and ukraine appear to be strong if investment options are accounted for however russia achieves clear dominance we show that options to bypass one of the transit countries are of little strategic importance compared to russia s direct access to its customers through the baltic sea comparing the results of our calibrated model with empirical evidence obtained from transit and import agreements we find that the shapley value explains the power of major transit countries better than the core and the nucleolus

an engineering economic approach to transmission planning under market and regulatory uncertainties wecc case study we propose a stochastic programming based tool to support adaptive transmission planning under market and regulatory uncertainties we model investments in two stages differentiating between commitments that must be made now and corrective actions that can be undertaken as new information becomes available the objective is to minimize expected transmission and generation costs over the time horizon nonlinear constraints resulting from kirchhoff s voltage law are included we apply the tool to a 240 bus representation of the western electricity coordinating council and model uncertainty using three scenarios with distinct renewable electricity mandates emissions policies and fossil fuel prices we conclude that the cost of ignoring uncertainty the cost of using naive deterministic planning methods relative to explicitly modeling uncertainty is of the same order of magnitude as the cost of first stage transmission investments furthermore we conclude that heuristic rules for constructing transmission plans based on scenario planning can be as suboptimal as deterministic plans

a three level static milp model for generation and transmission expansion planning we present a three level equilibrium model for the expansion of an electric network the lower level model represents the equilibrium of a pool based market the intermediate level represents the nash equilibrium in generation capacity expansion taking into account the outcomes on the spot market and the upper level model represents the anticipation of transmission expansion planning to the investment in generation capacity and the pool based market equilibrium the demand has been considered as exogenous and locational marginal prices are obtained as endogenous variables of the model the three level model is formulated as a mixed integer linear programming milp problem the model is applied to a realistic power system in chile to illustrate the methodology and proper conclusions are reached

cost structure and capacity utilisation in multi product industries an application to the basque trawl industry to empirically study production structure and the capacity level at which vessels are harvesting a short run translog cost function is estimated from the estimated parameters two capacity utilisation measures are calculated ray returns to scale and a dual capacity utilisation measure both capacity utilisation measures suggest that there is excess capacity in the basque trawler fleet these measures are also estimated annually and they indicate the same conclusion the basque trawler fleet can therefore gain from increased production levels

a note on capacity utilization and measurement of scale economies this article investigates the measurement of returns to scale rts via a cost function in the presence of quasi fixed inputs caves christensen and swanson ccs proposed estimation of a variable cost function and derived a formula for computing rts from it this article extends the ccs results by a investigating the bias that would result from erroneously using a total cost function for measuring rts b indicating that the ccs procedure for measuring scale economies in the presence of quasi fixed inputs is inconsistent for the case of nonhomothetic production technology and c proposing an alternative procedure that allows one to evaluate rts at long run equilibrium points even when firms in the sample are in disequilibrium the similarity between this proposed method and the temporary equilibrium approach for measuring productivity growth is noted as well the empirical results on rts are compared among the three alternative methods total cost ccs variable cost and proposed long run equil

efficiency analysis of hydroelectric generating plants a case study for portugal abstract this paper estimates changes in total productivity breaking this down into technically efficient change and technological change by means of data envelopment analysis dea applied to the hydroelectric energy generating plants of edp the portugal electricity company the aim of this procedure is to seek out those best practices that will lead to improved performance in the energy market we rank the plants according to their change in total productivity for the period 2001 2004 concluding that some plants experienced productivity growth while others experienced a decrease in productivity the implications arising from the study are that edp should adopt an internal benchmark management procedure in order to evaluate the relative position of each hydroelectric generating plant and to adopt managerial strategies designed to catch up with the frontier of best practices as the frontier is shifting along the time constant efforts are needed in this respect along the time

an analysis of the spanish electrical utility industry economies of scale technological progress and efficiency abstract in this paper we propose a model to explain the behaviour of the spanish electrical utility industry during the period 1987 1997 under the then existing regulatory system marco legal estable the paper will study the presence of economies of scale the effect of technological progress and the differences in the efficiency of the different companies within the market the paper concludes that the spanish electrical utility industry was not in fact characterized by economies of scale during this period but witnessed a great improvement in efficiency within that period all the critical market factors remind stable

capacity utilization measures underlying economic theory and an alternative approach measures of industrial capacity utilization hereafter cu have been used extensively in helping to explain changes in the rate of investment labor productivity and inflation the cu measures have also been used to obtain indices of capital in use as distinct from capital stock in place a number of alternative measures of cu are periodically calculated and published the 1980 economic report of the president for example contains three series that by the federal reserve board the u s department of commerce bureau of economic analysis and the wharton school of finance other publicly available series are those prepared by mcgraw hill publishing company the u s department of commerce bureau of the census and rinfret boston associates inc although a host of cu measures is publicly available it is not at all clear how one should interpret changes over time in each measure or variations among them a principal reason underlying these interpretation problems is that the crucial link between underlying economic theory and the constructed measure of cu is weak one way in which this issue has manifested itself in the policy domain over the last five years has been with respect to the uncertain effects of dramatic increases in energy prices on capacity output and on cu each of the cu measures noted above is computed in such a way that explicitly ignores any role for energy prices yet several times during the last decade though growth to apparently high rates of cu had taken place investment and average labor productivity were much lower than expected and the rate of price increase much greater in brief during the last decade the explanatory power of alternative cu measures has dropped sharply some have conjectured that post opec energy price increases may have brought about major changes in the u s economy so that old quantitative relationships between measured cu and investment labor productivity and price inflation may have been altered substantially in order to assess effects of changes in pe on cu a re examination of the notion and measurement of cu is needed based on the framework of the economic theory of the firm that is the focus of this paper

environmental regulations and productivity growth the case of fossil fueled electric power generation this paper measures and analyzes the effect of sulfur dioxide emission restrictions on the rate of productivity growth in the electric power industry over the 1973 79 business cycle a firm specific measure of regulatory intensity is developed which depends on the severity of the emission standard the extent of enforcement and the unconstrained emission rate relevant to each utility the results indicate that emission regulations result in significantly higher generating costs primarily from the increased use of low sulfur fuels the average rate of productivity growth was reduced by 0 59 percentage points per year for constrained utilities

beyond environmental and ecological economics proposal for an economic sociology of the environment the vast majority of approaches in environmental economics attribute the current ecological crisis to the fact that from its inception the industrial economic system was founded on premises that made no allowance for the limits and regulatory functions of ecosystems according to these approaches we must therefore remedy the historical error of dissociating the fields of economics from the natural sciences notably by restoring the links between these two disciplines distinguishing themselves from the two historic approaches environmental economics and early ecological economics the emerging institutionalist schools evoke not only the constructed nature of the environmental crisis generally viewed as an objective fact by both traditional environmental economists and ecological economists but also the socially constructed nature of the economy and its institutions an actionalist regulationist approach allows us to formalize this twofold construction and lays the groundwork for a new economic sociology of the environment in which the technical modalities of ecological modernization are studied in light of social relations with the understanding that social relations are also affected by the materiality of the environmental crisis this actionalist regulationist approach also lends itself to anticipating likely trajectories in the future ecological modernization of economic institutions

comparative performance of short run capacity utilization measures abstract we present parametric estimates for primal and dual capacity utilization and then evaluate their comparative performance empirical findings indicate that alternative capacity utilization ratios depending upon the reference variables are procyclically consistent with each other

on the measurement of capacity utilization capacity utilization is usually defined as the ratio of actual output to the output corresponding to 1 the minimum point on the short run average total cost curve and 2 the point of tangency between the long run average total cost and short run average total cost curves in practice however capacity utilization is often measured as the ratio of actual to the maximum potential output consistent with a given capital stock this paper demonstrates how to estimate the theoretical measures of capacity utilization and examines the correlation between three measures of capacity utilization and the mcgraw hill estimates of capacity utilization using data from a sample of u s privately owned electric utilities for 1961 83 copyright 1989 by blackwell publishing ltd

economies of scale in norwegian electricity distribution a quantile regression approach in this article we investigate scale economies in norwegian electricity distribution companies using a quantile regression approach to the best of our knowledge this is the first attempt to apply this estimation technique when analysing scale economies we estimate the cost elasticities of the two output components network length and number of customers to calculate returns to scale our results show large potential of scale economies particularly for the smallest companies we also find that returns to scale is increasing over time these findings have important implications for policymakers when they are deciding the structure of the industry in the future

economies of scale and utilization in the swiss electric power distribution industry economies of scale and utilization in the swiss electricity distribution industry are analysed a translog variable cost function was estimated using panel data for a sample of 39 municipal utilities over the period 1988 1991 economies of both scale and utilization appear to exist in the distribution of electricity both for small medium and large sized utilities thus the empirical evidence suggests sub additivity of the cost function over the relevant range of output for the swiss electricity distribution utilities a necessary condition for a natural monopoly to exist

can cross border transmission expansion lead to fair and stable cooperation northeast asia case analysis abstract in this paper we present a framework for analyzing cross border power interconnection projects based on cooperative game theory compared to existing studies we not only quantify the benefits of interconnections and suggest cost benefit allocation techniques but also analyze the stability of the allocations which is a crucial aspect in regions where coordination and mutual trust between countries have not been built yet we apply our framework to the northeast asia where six countries china russia mongolia south korea north korea and japan are suggested for cross border transmission expansion planning cooperation cost benefits allocation of the interconnections is analyzed according to the marginal contribution of each country to the grand coalition and the minimal dissatisfaction of each coalition that ensures the stability of the solution accordingly game theory concepts the shapley value and the nucleolus are used in our analysis moreover we employ the core concept to further analyze the stability of the allocation solution and present a visualization of the feasible space formed by all stable allocations we found out that the grand coalition i e the scenario where all countries agree on the cooperation is the optimal and stable coalition with 7 1 billion total savings per year we also suggested a scheme of investment allocation and payments between the northeast asian countries in order to ensure that the proposed interconnections are plausible in practice

returns to scale from variable and total cost functions abstract estimates of the returns to scale from a variable cost function evaluated at the actual and optimal capital stocks and a total cost function are presented the estimates generally differ depending in part upon the output at which they are evaluated

regional differences in nuclear and fossil fuel generation of electricity previous research on electric gen eration costs has mainly relied on economy wide data this study disaggregates a broad sample into regions known to have marked differences in fossil fuel availability climate regulatory ef fects and other variables we find differences exist in generation costs among the studied re gions and nuclear power using estimates of scale economies and other measures we also find smaller minimum efficient size fossil fuel firms than previous studies based on recent cost information this study provides insights into several industry structure issues such as capac ity expansion competition input costs environ mental policy and transmission access jel q42

the impact of the automatic adjustment clause on fuel purchase and utilization practices in the u s electric utility industry the purpose of this paper is to examine the combined influence of the search and switching effects of the automatic fuel adjustment clause on the prices paid by utilities for the aggregate fuel input then given this combined effect an attempt is made to separate the individual influences of the two component effects findings indicate that the presence of an automatic fuel adjustment clause leads the regulated firm to pay a higher price for the aggregate fuel input than would be paid in the absence of the clause the severity of this aggregate fuel input than would be paid in the absence of the clause the severity of this aggregate fuel price differential is estimated to be on the order of 6 cents 10 sup 6 btu or approximately 10 of the average fossil fuel price moreover this aggregate effect is found to result from the induced disincentive to switch to less expensive fuels rather than the payment of higher prices for the individual component fuels 21 references 5 tables

factor substitution and economies of scale and utilisation in kuwait s crude oil industry abstract the cost structure of the crude oil industry in kuwait has been examined with specific focus on factor substitution and economies of scale and utilisation this has been done by estimating translog cost functions both long run and short run using time series data covering the period from 1976 to 1996 the results indicate that the implied production structure is non homothetic and the pattern of scale effect is labour saving but capital and material using the evidence also supports the presence of an induced exogenous technical change which is non neutral labour and capital using and material saving the elasticity of substitution between capital and labour is positive implying that the two inputs are substitute the results also indicate the existence of diseconomies of scale in the production of crude oil but no economies or diseconomies of utilisation

static efficiency decompositions and capacity utilisation integrating economic and technical capacity notions starting from existing static decompositions of overall economic efficiency on nonparametric production and cost frontiers this article proposes more comprehensive decompositions including several cost based notions of capacity utilization furthermore in case prices are lacking we develop additional decompositions of overall technical efficiency integrating a technical concept of capacity utilization these new efficiency decompositions provide a link between short and long run economic analysis and in empirical work avoid conflating inefficiency and differences in capacity utilization an empirical analysis using a monthly panel of chilean hydro electric power plants illustrates the potential of these decomposition proposals

capacity and capacity utilization in common pool resource industries excess capacity poses one of the most pressingproblems that arise when industries exploitcommon pool natural resources it entailsover investment in the capital stock andexcessive use of variable inputs and placesadditional exploitation pressures on theresource stocks confusion persists over theappropriate definition and measurement ofcapacity and capacity utilization for theseindustries but understanding capacity and itsmeasurement is necessary to properly design acapacity management program this paperaddresses these issues by overviewing theconceptual and theoretical bases for capacityand capacity utilization measurement identifying specific problems for common poolresources outlining alternative methodologiesfor their measurement and illustrating the useof these definitions and measurement methods ina fisheries case study

resource rent taxation and benchmarking a new perspective for the swiss hydropower sector the electricity generation in switzerland is mainly based on hydropower 55 of total production the exploitation of water in the hydropower sector can generate significant so called resource rents these are defined by the surplus return above the value of capital labor materials and energy used to exploit hydropower in switzerland hydropower producers pay to the state a fixed fee per kw gross capacity with this system the substantial differences in costs revenues and in the production characteristics of the hydropower plants are not taken into account in this context the following paper has two main goals 1 to discuss the introduction in the swiss hydropower sector of a new payment system based on a resource rent tax 2 to propose a combination of a rrt system with a benchmarking analysis of the production cost obtained through the estimation of a stochastic frontier variable cost function we estimate a true random effects stochastic frontier variable cost function using panel data in order to overcome the asymmetric information problem in addition using the information on cost efficiency of the single companies we show how to introduce in the rrt scheme a benchmark system which gives incentives to minimize the production costs

efficiency and regulation of the slovenian electricity distribution companies abstract the slovenian energy law adopted in 1999 has opened the internal market to competition up to 64 of the final consumption the opening of the internal market to foreign competition is envisaged for 2003 with regard to the methodology of price regulation the energy law introduces the price cap regulation which aims to give firms incentive for cost reduction to provide information for effective price regulation we estimated a cost frontier function on a sample of slovenian electricity distribution utilities over the 1991 2000 period the estimated efficient frontier could be used by slovenian regulatory agency as a benchmark to regulate network access prices our results show that slovenian distribution companies are cost inefficient we have also proved the presence of increasing returns to scale with most utilities not achieving the minimum efficient scale thus the slovenian regulatory authority should consider how to induce mergers of small electricity distribution utilities into larger units

a network game analysis of strategic interactions in the international trade of russian natural gas through ukraine and belarus abstract natural gas is an important source of relatively low emission low cost non nuclear and abundant energy however the difficulty of storage and transportation adds geopolitical and geostrategic complexity to its international trade much of the global natural gas trade occurs through natural gas pipelines which as an infrastructure is strictly specific to the transportation of natural gas therefore the very structure of natural gas pipeline networks can dictate the strategic relationship among countries involved in its trade this paper applies a network game model where these pipeline networks are modeled as graphs and respective value functions and employs the link based flexible network allocation rule developed by jackson 2005 as a solution concept to measure the relative power structure among these natural gas trading countries the paper analyzes the case of trade between russia ukraine belarus and western europe and compares the results to existing analyses that employ a cooperative game model in characteristic function form and the shapley value as the solution concept whereas the results of the analysis conducted in the previous literature indicate that russia s relative power was significantly stronger than other players both before and after the construction of the nord stream pipeline the results provided in this paper draw a different conclusion ukraine s relative power was already equal to that of russia before the nord stream this may be understood as one of the underlying causes for the prolonged conflicts that occurred repeatedly in this region concerning natural gas trade

an aumann shapley approach to allocate transmission service cost among network users in electricity markets this work presents a new methodology for the allocation of transmission service cost among network users in energy markets the proposed method is based on an optimization game theoretic framework aumann shapley that retains the desirable properties of other existing methodologies such as the average participations factors apf and long run marginal costs lrmc the approach is shown to be computationally feasible and presents desirable characteristics in terms of economic coherence and isonomy computational results are presented for the brazilian power system and compared with those obtained by three other methodologies lrmc apf and the current method adopted in brazil

the effects of competition on publicly owned firms evidence from the municipal electric industry in the u s abstract previous studies have examined the effects of competition on privately owned firms this study examines the impact of competition on a sample of publicly owned electric utilities operating in the u s during 1961 1980 estimates from a translog variable cost function indicate that competitive firms had higher generating costs than monopolists ceteris paribus in addition it appears that operating costs would fall significantly if a single monopolist were to replace two competitors in a given market

interrelated factor demands for manufacturing a dynamic translog cost function approach abstract in this paper we report the results of estimating a joint model for labour capital and energy using the transcendental logarithmic cost function of christensen jorgenson and lau 1973 this allows us to determine both the own price and cross elasticities of substitution between labour capital and energy we combine a model of factor shares with a dynamic adjustment process for each factor we also impose on the cross equation restrictions necessary to provide additivity homogeneity and symmetry since the covariance matrix in systems of share relationships is singular we follow the suggestions of anderson and blundell 1982 and employ a mullivariate error corrrection model the results suggest that additivity symmetry and homogeneity restrictions do hold and that there are short run increasing returns to scale

reducing urban public transport costs by tendering lots a panel data estimation allotment is for urban authorities a governance strategy to reduce public transport costs it consists of dividing a network into several lots so as to multiply the number of calls for tender on the one hand gains should be obtained by increasing competition for the market and reducing the costs of obtaining accurate information on the other hand cutting a network into several parts is also expected to have negative consequences on production costs in terms of lower returns to scale many industry stakeholders believe that the latter element more than compensates for the former in this article we estimate a translog cost function with a panel of 141 french urban public transport networks our main conclusion is that scale economies are exhausted for a production of about 3 million vehicle kilometres per year therefore as far as returns to scale are concerned allotment would reduce the costs of public transport services for the main cities of our sample a second dividend for allotment is then presented and implies that the assumed trade off between returns to scale and increased competition is irrelevant

the quantitative consequences of raising the u s saving rate the authors investigate the consequences of a permanent unphased increase in the u s gross saving rate they find that the sacrifice time the time that elapses until consumption surpasses the value it would have had under the initial saving rate is roughly six years and is insensitive to the percentage increase in the saving rate delta sub s the percentage gain in output at the end of decade the decade gain is roughly 26 of delta sub s while the percentage gain in consumption is roughly 8 of delta sub s the saving rate return the internal rate of return on a permanent increase in the saving rate is roughly 16 and is insensitive to delta sub s copyright 1991 by mit press

electric power distribution economies of scale mergers and restructuring electricity distribution is generally viewed as a natural monopoly and therefore as having the least potential for the kinds of reforms that have swept the electric power sector in many countries mergers among distribution companies and efforts at retail competition have nonetheless altered the operation of the distribution stage this research into us electric utilities uses a much larger and less selective data base than previously available to examine the scale properties of distribution with respect to output distance and customer numbers and for different functions within distribution it finds significant economies at low output levels holding system size and customer density constant but the cost gradient is otherwise modest it also finds that geographic size and customer numbers are quite important and that economies are significantly stronger for the infrastructure or wires business than for the marketing function performed by distribution utilities these results lend credence to effort

scale economies in electricity distribution a semiparametric analysis we estimate the costs of distributing electricity using data on municipal electric utilities in ontario canada for the period 1993 5 the data reveal substantial evidence of increasing returns to scale with minimum efficient scale being achieved by firms with about 20 000 customers larger firms exhibit constant or decreasing returns utilities which deliver additional services such as water sewage have significantly lower costs indicating the presence of economies of scope our basic specifications comprise semiparametric variants of the translog cost function where output enters non parametrically and remaining variables including their interactions with output are parametric we rely upon non parametric differencing techniques and extend a previous differencing test of equality of non parametric regression functions to a panel data setting copyright 2000 john wiley sons ltd

what are the benefits of co optimizing transmission and generation investment eastern interconnection case study transmission planning has traditionally followed a generation first or reactive logic in which network reinforcements are planned to accommodate assumed generation build outs the emergence of renewables has revealed deficiencies in this approach in that it ignores the interdependence of transmission and generation investments for instance grid investments can provide access to higher quality renewables and thus affect plant siting disregarding this complementarity increases costs in theory this can be corrected by proactive transmission planning which anticipates how generation investment responds by co optimizing transmission and generation investments we evaluate the potential usefulness of co optimization by applying a mixed integer linear programming formulation to a 24 bus stakeholder developed representation of the u s eastern interconnection we estimate cost savings from co optimization compared to both reactive planning and an approach that iterates between generation and transmission investment optimization these savings turn out to be comparable in magnitude to the amount of incremental transmission investment we also evaluate three congestion metrics as screens for reducing the number of candidate transmission investments they each improve solution times but the estimated potential benefit metric is much more effective in identifying cost effective lines than the others

an effective transmission network expansion cost allocation based on game theory the expansion of transmission systems impacts many entities in the market environment each entity may fare better or worse as a result of congestion relief in the presence of new investments negatively affected firms exert their influence to prevent the expansion from taking place the opposition of these firms and the lack of appropriate incentives results in insufficient investments in transmission assets the network is being frequently used at its maximum limits leading to economic inefficiencies and reduced reliability hence there is a need for effective incentive schemes for network expansion in this paper we propose a game theory based scheme for the allocation of transmission expansion costs among market entities the allocation takes into account both the physical and economic impacts of the new transmission assets and the influence of each firm on the expansion decision this is the first scheme designed to give all market participants explicit incentives to support the expansion the application of the allocation solution to the garver six bus system is presented to illustrate the capabilities of the proposed method

a structural transmission cost allocation scheme based on capacity usage identification in liberalized electricity markets it is essential and of great importance to develop a fair transmission cost allocation scheme that is able to reflect the extent of use of the transmission facilities as much as possible in this paper the transmission capacity is divided into four components capacity used in normal conditions cn capacity reserved for contingencies cc capacity reserved for future use cf and invalid capacity ic cn and cc are determined by the power flow in the normal and contingency conditions of the system operation snapshot respectively the cf is determined by the maximum power flow in contingency conditions over a certain period say yearly the cost corresponding to ic would not be allocated to network users based on capacity usage identification differential cost allocation methods are designed according to the functions of the transmission capacity the cost corresponding to the capacity usage of the transmission asset under normal and contingency conditions is allocated separately case studies in a 3 bus system and the ieee 30 bus system validate the good performance of the proposed structural transmission cost allocation scheme

green growth degrowth and the commons the concepts of green growth and degrowth occupy central positions in the public debate on the relationship between economic growth and the environment while proponents of the former approach claim that environmental measures can promote growth by for example more efficient use of natural resources proponents of the latter maintain that environmental integrity can only be upheld by slowing down growth this paper argues that both approaches constitute inadequate foundations for public policy as they fail to appropriately conceptualize social welfare we show how policy aimed at social welfare can be understood as managing a portfolio of capital stocks some of which exhibit the characteristics of commons i e common pool resources and public goods we then propose a programme of welfare diagnostics which aims at establishing minimum thresholds for capital stocks essential to welfare as a guide for real world policy formulation and discuss the role of appropriation of natural resource rents for its practical implementation we conclude by highlighting the central role of scientific policy advice in determining how different conceptions of welfare would be reflected in setting targets and choosing the means to achieve them

estimation of cost functions in a data poor environment the case of capacity estimation in fisheries fisheries economic analysis is often handicapped by the lack of adequate data to undertake robust econometric analyses in this study a translog cost function was required to estimate the potential direction of adjustment in a uk fleet segment if a new regulatory regime was introduced however the available data were not appropriate for such estimation data envelopment analysis dea was used to modify the data subsequently used in the estimation of the long run cost function the resulting model appears robust and is consistent with economic theory and the supporting evidence produced using dea

the effects of an increase in power rate on energy demand and output price in korean manufacturing sectors in korea price subsidies for industrial power are provided by the government in order to enhance industrial competitiveness and curb inflation however this repeatedly causes electricity shortages in the peak summer and winter seasons because of over consumption forcing a decline in the demand for electricity by raising power rates would thus help prevent a national blackout lowering dependence on foreign energy and reducing co2 emissions cost effectively this paper simulates the effects of a rise in power rate on demand for electricity and output price by estimating a restricted cost function in which the quantity of raw materials is set to its cost minimizing level jointly with an inverse supply relation for the top three electricity intensive manufacturing sectors the empirical results indicate that a 10 increase in electricity rate would result in 8 0 10 1 less demand across all three manufacturing sectors ceteris paribus the impact on output price is of little statistical significance in the basic metals sector while output price on average falls by 0 16 in the tv and communication equipment sector

capacity utilisation and profitability a decomposition of short run profit efficiency the principal aim of this paper is to measure the amount by which the profit of a multi input multi output firm deviates from maximum short run profit and then to decompose this profit gap into components that are of practical use to managers in particular our interest is in the measurement of the contribution of unused capacity along with measures of technical inefficiency and allocative inefficiency in this profit gap we survey existing definitions of capacity and after discussing their shortcomings we propose a new ray economic capacity measure that involves short run profit maximisation with the output mix held constant we go on to describe how the gap between observed profit and maximum profit can be calculated and decomposed using linear programming methods the paper concludes with an empirical illustration involving data on 28 international airline companies the empirical results indicate that these airline companies achieve profit levels which are on average us 815m below potential levels and that 70 of the gap may be attributed to unused capacity

the kenneth e boulding memorial award 2014 ecological economics a personal journey abstract this speech was delivered at the meeting of the international society for ecological economics at reykjiavik iceland on the 13th of august 2014 at the presentation of the 2014 kenneth e boulding memorial award in the speech peter victor pays tribute to kenneth boulding one of the pioneers of ecological economics and then describes his own principal contributions to ecological economics over a period of 45 years these contributions include environmental applications of input output analysis the problematic extension of the concept of capital to nature the definition and analysis of green growth and his research on ecological macroeconomics and the challenge to economic growth

measures of capacity utilization and its determinants a study of indian manufacturing we estimate capacity utilization cu rates in for selected industries in indian manufacturing for the 20 year period 1976 1996 we estimate a generalized leontief variable cost function with capital as a quasi fixed input to derive our cu measures using error component techniques we note substantial variations in cu both across industries and over time in general we find that cu rates were higher in the earlier time period dropped in the mid 80s and started rising again in the early 90s cu rates in our analysis are sensitive to input prices with the sole exception of the price of labor we also confirm the standard result that variations in demand are a significant driving force for variations in cu we find that cu is positively related to the magnitude of labor intensity in production this holds for both between industries and within industries empirical results also indicate that traditional measures of cu such as minimum capital output ratio and peak to peak are not appropriate proxies for

the sensitivity of productivity growth measures to alternative structural and behavioral assumptions an application to electric utilities 1951 1984 this article examines the sensitivity of three alternative multifactor productivity growth estimates for the electric utility industry during the 1951 1984 period the results indicate that multifactor productivity growth estimates are quite sensitive to the relaxation of various structural and behavioral assumptions first a benchmark measure is constructed along the lines suggested by solow 1957 this residual approach produces estimates that suggest a substantial decline in firm level productivity growth after the mid 1960s prior to obtaining the second and third estimates empirical tests of the structural and behavioral assumptions underlying a firm s operation are conducted first the structural assumption of constant returns to scale is rejected and the resulting long run scale adjusted multifactor productivity growth estimates are found to be consistently less than the residual estimates second the behavioral assumption of long run equilibrium is rejected comparing the long run scale ad

economies of scale and utilization in electricity generation in kuwait cost structure of electricity generation in kuwait has been examined with specific focus on the economies of scale and utilization this has been done by estimating a translog variable cost function using time series data covering the period from 1965 to 1990 the results indicate the existence of diseconomies of scale in the generation of electricity but no economies or diseconomies of utilization

firm entry excess capacity and endogenous productivity abstract we show that sluggish firm entry causes productivity to vary endogenously in response to technology shocks the endogenous productivity effect is caused by incumbent firms utilizing excess capacity as entry adjusts we develop a nonparametric model of endogenous sunk costs and monopolistic competition to show that imperfect competition and dynamic entry are necessary and jointly sufficient conditions for endogenous productivity fluctuations quantitatively we show the endogenous productivity effect is as large as that from a traditional capital utilization effect

regional differences in electricity distribution costs and their consequences for yardstick regulation of access prices abstract in this paper we estimate an average cost function for a panel of 59 swiss local and regional electricity distribution utilities as a basis for yardstick regulation of the distribution network access prices shleifer 1985 proposed yardstick competition in terms of price to regulate local monopolies producing a homogeneous good the regulated price for the individual firms depends on the average costs of identical firms the yardstick competition concept can also be applied to firms that produce heterogeneous goods if these goods differ only in observable characteristics to correct the yardstick for heterogeneity the regulator can use a multivariate estimation of an average cost function in the case of electricity distribution the heterogeneity of output consists mainly of different characteristics of the distribution service areas in this paper we follow shleifer s suggestion to estimate a multivariate average cost function that can be employed by the regulatory commission to benchmark network access prices at the distribution level several exogenous variables measuring the heterogeneity of the service areas were included in the cost model specification we find that the regional differences of the service areas e g area shares of forests agricultural areas or unproductive land and population density significantly influence electricity distribution costs

decomposing capacity utilization in data envelopment analysis an application to banks in india abstract this paper briefly reviews the existing methods of capacity utilization in nonparametric framework from economic perspectives and then suggests an alternative in the light of limitations therein in the spirit of work by coelli et al coelli t j grifell tatje e perelman s 2002 capacity utilisation and profitability a decomposition of short run profit efficiency international journal of production economics 79 261 278 we propose two methods radial and non radial to decompose the input based physical technological capacity utilization into various meaningful components viz technical inefficiency ray economic capacity utilization and optimal capacity idleness a case study of indian banking industry is taken as an example to illustrate the potential application of these two methods of decomposition our two broad empirical findings are that first competition created after financial sector reforms generates high efficiency growth and reduces excess capacity second the cost gap of the short run cost from the actual cost is higher for the nationalized banks over the private banks indicating that the former banks though old do not reflect their learning experience in their cost minimizing behavior

the impact of ownership unbundling on cost efficiency empirical evidence from the new zealand electricity distribution sector abstract several countries around the world have introduced reforms to the electric power sector one important element of these reforms is the introduction of an unbundling process i e the separation of the competitive activities of supply and production from the monopole activity of transmission and distribution of electricity there are several forms of unbundling functional legal and ownership new zealand for instance adopted an ownership unbundling in 1998 as discussed in the literature ownership unbundling produces benefits and costs one of the benefits may be an improvement in the level of the productive efficiency of the companies due to the use of the inputs in just one activity and a greater level of transparency for the regulator this paper analyzes the cost efficiency of 28 electricity distribution companies in new zealand for the period between 1996 and 2011 using a stochastic frontier panel data model a total cost function and a variable cost function are estimated in order to evaluate the impact of ownership unbundling on the level of cost efficiency the results indicate that ownership separation of electricity generation and retail operations from the distribution network has a positive effect on the cost efficiency of distribution companies in new zealand the estimated effect of ownership separation suggests a positive average one off shift in the level of cost efficiency by 0 242 in the short run and 0 144 in the long run

cost structure and capacity in the norwegian pelagic fisheries the parameters of the short run cost function are estimated for three vessel types taking part in the norwegian pelagic fisheries purse seine vessels trawlers and coastal vessels the generalized translog functional form is used estimates of returns to scale are calculated and the results indicate that there are substantial economies of scale in all vessel classes it is further investigated whether excess capacity varies with vessel size and age the analysis suggests increased quotas per vessel to avoid rent dissipation with the total allowable catch given the number of participating vessels must be reduced

revenue based capacity utilisation measures and decomposition the case of danish north sea trawlers in fisheries capacity analysis has largely been limited to measuring physical capacity defined as the maximum amount of output that can be produced per unit of time given existing plant and equipment and unrestricted availability of variable inputs an economic measure of capacity can be defined as the maximum revenue attainable for the given fixed inputs using relevant outputs and output prices this paper examines these two approaches to capacity by applying data envelopment analysis to physical and economic input output data for danish north sea trawlers the economic and physical measures are compared and contrasted using correlation analysis an innovative analysis into the composition of possible revenue increments is also presented and reasons for economic inefficiency of vessels are identified

estimation and allocation of cost savings from collaborative co2 abatement in china abstract as an increasingly accepted way of relieving global warming collaborative carbon dioxide co2 abatement could improve not only emission performance but also cost effectiveness of abatement in this study we analyze the cost savings and benefits of collaborative abatement in the context of china by using data envelopment analysis dea approach specifically we establish 63 collaborative abatement scenarios by dividing the mainland china into six main regions and then estimate the costs savings in each collaboration abatement scenario through investigating the gains for each region in various scenarios the best collaborative partners for each region are suggested from perspectives of benefit maximization furthermore the contribution of each region to collaborative abatement cost saving is also differentiated with the shapley value approach

privatisation and the efficiency of decentralised electricity generation some evidence from inter war britain the privatization of the electricity supply industry in england and wales has established a decentralized system of supply this paper considers the efficiency of the decentralized interwar electricity supply industry a generalized stochastic frontier cost function is specificed enabling the estimation of returns to scale and inefficiency at plant level these estimates are used in turn to examine the efficiency of stations selected by the central electricity board to supply the national grid the results imply that a decentralized system was not only feasible but that the selection procedure was sensitive to efficiency differences at plant level copyright 1992 by royal economic society

the transition to a sustainable prosperity a stock flow consistent ecological macroeconomic model for canada abstract this paper presents a stock flow consistent sfc macroeconomic simulation model for canada we use the model to generate three very different stories about the future of the canadian economy covering the half century from 2017 to 2067 a base case scenario in which current trends and relationships are projected into the future a carbon reduction scenario in which measures are introduced specifically designed to reduce canada s carbon emissions and a sustainable prosperity scenario which incorporates additional measures to improve environmental social and financial conditions across society the performance of the economy is tracked using two composite indicators constructed especially for this study an environmental burden index ebi which describes the environmental performance of the model and a composite sustainable prosperity index spi which is based on a weighted average of seven economic social and environmental performance indicators contrary to the widely accepted view the results suggest that green growth in the carbon reduction scenario may be slower than brown growth more importantly we show in the sustainable prosperity scenario that improved environmental and social outcomes are possible even as the growth rate declines to zero

capacity utilization and its determinants for a container shipping line theory and evidence under utilization of fleet capacity appears to be a long lasting issue in the container shipping industry also there are some difficulties unsolved while measuring the ratio of capacity utilization cu of a container shipping line from the perspective of an engineering approach the slots capacity installed is the most popular way to represent the capacity output since the slots capacity installed lacks theoretical support this study adopts an economics model to find the capacity output of a shipping line further the derived cu ratio identifies the realized utilization of fleet capacity for a shipping line focused on the three largest container shipping lines in taiwan this article shows that their fleet capacity are totally under utilized and the movement patterns of cu ratios are approximately identical in addition the variations of cu ratios also suggest that the enactment of ocean shipping reform act has contributed a positive effect on the capacity utilization of a container shipping line