economies of scale in multi product firms an empirical analysis this paper presents new evidence on scale economies in multiproduct firms previous studies are limited in view of r ecent advances in the theory of the multiproduct firm the water util ity is chosen here as a multiproduct firm providing multiple services to various classes of customers with spatial variation a translog m ultiproduct cost function is estimated based on duality between tran sformation and cost functions the paper analyzes overall as well as product specific scale economies it also discusses ray average cos t curves and derives the m locus which provides useful information on scope economies and the cost minimizing number of firms copyright 1987 by the review of economic studies limited

the relation between tax rates and pre tax returns direct evidence from the 1981 and 1986 tax rate reductions abstract this study documents one effect of the theory of implicit taxes providing evidence that a change in the tax rate results in a change in pre tax returns yield spreads of pairs of treasury bills maturing in the last week of december and the first week of january are examined year ends not affected by rate changes show a significant positive yield spread between these pairs of bills reflecting an upward sloping yield curve however for year ends coinciding with the tax rate reductions of 1981 and 1986 there is a significant negative yield spread between these pairs of bills

a nonparametric cost approach to scale efficiency starting with farrell fieldhouse 1962 a host of notiparametric models have been developed for calculation of scale efficiency a common property of these models is that they are specified in terms of input output data duality theory has taught us that technological characteristics may be analyzed from either the primal or the dual cost side the purpose of this paper is to introduce a nonparametric dual method of calculating scale efficiency

assessing the performance of renewable electricity support instruments abstract the performance of feed in tariffs and tradable certificates is assessed on criteria of efficacy efficiency equity and institutional feasibility in the early stage of transition to an energy system based entirely on renewable energy supplies renewable electricity can only thrive if support takes into account the specific technical economic and political problems which result from embedding this electricity in conventional power systems whose technology organizational structure environmental responsibility and general mission differ profoundly from the emerging renewable based system support schemes need to capture the diversity of power supplies the variable nature of some renewable supplies and their different attributes for the purposes of public policy they must take into account the variety of generators including small decentralized generation emerging in a renewable based system and the new relationships between generators and customers renewable energy policies need a clear point of reference because the incumbent power systems are not sustainable they must adapt to the requirements of the renewable ones not the other way round incumbent systems carry the responsibility of paying the transition something that corresponds best with the polluter pays principle

arbitrage clientele effects and the term structure of interest rates this paper derives a new and intuitive estimation procedure for the term structure under potential tax arbitrage no a priori assumptions regarding the equality of the prices and present values of bonds are made the data are employed to determine whether this equality holds and an appropriate estimator is thereby endogenously derived the suggested estimator is based on the optimizing behavior of an investor in a market with frictions and emerges directly from the solution of the dual of the no arbitrage optimization problem in addition the proposed estimator benefits from being both theoretically sound and straightforward to apply

investment risks in power generation a comparison of fossil fuel and renewable energy dominated markets abstract due to their high capital intensity weather dependent renewable energies res such as solar and wind face considerable investment risks in power markets in addition their uncertain production volumes also affect the investment risks of other plant types through the impact on power prices and residual demand increasing res shares thus potentially increase overall investment risks in power markets which many analysts consider to be a potential problem against this background this paper compares investment risks of different technologies in markets with increasing shares of variable res it further analyses how generation mixes are affected by these investment risks if the risks are evaluated on a stand alone basis or in a plant portfolio context of a private firm for this purpose a stylized investment and dispatch model is used to conduct monte carlo simulations from which risk measures are derived the results show that capital intensive res face the highest stand alone risks since their profits are most affected by the power price risk however the results further indicate that the stand alone risks of variable res decrease with their share in the market because of a negative correlation of output and price risk in addition res have a risk benefit in firm plant portfolios in terms of constituting a hedge against losses of fossil fuel plants this positive portfolio effect however rapidly decreases and becomes negative with increasing res shares in the market

towards a sustainable electrification in ghana a review of renewable energy deployment policies abstract ghana has been facing perennial power rationing over the years due to fuel supply challenges the country s energy system is likely to suffer additional strain from rising energy demand fueled by population growth rapid urbanization and economic development fortunately there are enormous renewable energy resources which can provide sustainable electrification as backbone to socioeconomic development while curbing global warming ghana s energy strategy targets 100 access to electricity and 10 share of sustainable power in national generation mix by 2020 despite the existence of numerous policies and a renewable energy act current contribution of non conventional renewable energy to electricity generation is less than 1 the right mix of policies to address the unique domestic conditions and achieve its specific development goals remains insufficient this study reviews the regulatory framework financing incentives and other provisions of ghana s renewable energy act it critically examines the policy s strengths weaknesses opportunities and treats based on comparative analysis and lessons drawn from failed and successful implementation of similar policies around the world the study also assesses the impact of policy on project development it was found that the performance of ghana s renewable energy policy on grid connected electricity has been poor compared to its target the fundamental reasons for this unsatisfactory performance may be attributed to partial implementation of policies lack of market driven support schemes lack of pricing policy framework weak grid network limited access to funds and inconsistencies in renewable energy development strategies this study proposes the following countermeasures i ghana should comprehensively harmonize renewable energy regulatory and fiscal policies with domestic electricity pricing regime ii market driven support schemes should be prioritized for cost effectiveness and minimum governmental influence these reforms can help eliminate some of the major barriers to sustainable electrification in ghana while the lessons provide a learning curve for other african countries

some models for estimating technical and scale inefficiencies in data envelopment analysis in management contexts mathematical programming is usually used to evaluate a collection of possible alternative courses of action en route to selecting one which is best in this capacity mathematical programming serves as a planning aid to management data envelopment analysis reverses this role and employs mathematical programming to obtain ex post facto evaluations of the relative efficiency of management accomplishments however they may have been planned or executed mathematical programming is thereby extended for use as a tool for control and evaluation of past accomplishments as well as a tool to aid in planning future activities the ccr ratio form introduced by charnes cooper and rhodes as part of their data envelopment analysis approach comprehends both technical and scale inefficiencies via the optimal value of the ratio form as obtained directly from the data without requiring a priori specification of weights and or explicit delineation of assumed functional forms of relations between inputs and outputs a separation into technical and scale efficiencies is accomplished by the methods developed in this paper without altering the latter conditions for use of dea directly on observational data technical inefficiencies are identified with failures to achieve best possible output levels and or usage of excessive amounts of inputs methods for identifying and correcting the magnitudes of these inefficiencies as supplied in prior work are illustrated in the present paper a new separate variable is introduced which makes it possible to determine whether operations were conducted in regions of increasing constant or decreasing returns to scale in multiple input and multiple output situations the results are discussed and related not only to classical single output economics but also to more modern versions of economics which are identified with contestable market theories

measuring efficiencies and returns to scale of nippon telegraph telephone in production and cost analyses this article provides a theoretical framework related to data envelopment analysis dea in which an analytical relationship among eight different efficiency concepts is defined and explored in terms of production and cost analyses this article extends the theoretical basis into the measurement of scale economies se and returns to scale rts a unique feature of the se rts measurement is that the proposed approach is based upon the measurement regarding not only production activity but also cost performance as an important case study this article applies the dea based approach to measure the eight efficiency concepts and se rts of nippon telegraph telephone ntt this study finds that ntt has maintained high se and increasing rts in the operations of 39 annual periods from 1953 through 1992

global and local scale characteristics in convex and nonconvex nonparametric technologies a first empirical exploration the purpose of this contribution is to empirically implement and supplement the proposals made by podinovski 2004b to explore the nature of both global and local returns to scale in nonconvex nonparametric technologies in particular we both propose a simplified method to compute the global returns to scale and employ some secondary data sets to investigate the frequency of the special case of global sub constant returns to scale furthermore when determining global returns to scale using both convex and nonconvex technologies we verify how often the resulting information is concordant or conflicting finally besides comparing the fdh and dea evolution of ray average productivity for some typical individual observations we introduce in the literature two original methods for the determination of local returns to scale in nonconvex technologies

implied tax rates and the valuation of discount bonds abstract discount bonds afford the investor the opportunity for capital gains if for tax reasons the market is segmented on the demand side investors in lower and lower tax brackets must be attracted when interest rates rise and the supply of discount bonds increases changes in the differential tax on capital gains and interest income also should affect relative demand testing these hypotheses with u s treasury bond data the implied tax rate is found to vary over time in a manner consistent with market segmentation and tax law changes

examining the theory of capital structure signal factor hypothesis the aim of this study was to explore how various levels of information asymmetry affect the capital structure of listed companies in taiwan and china regression results over the past few decades have indicated that the trade off theory lacks explanatory power bringing into question the accuracy of the static trade off theory and the existence of an optimal capital structure on the other hand the financial decisions of companies do not always appear consistent with the pecking order theory building on the research of chou et al 2011 this study sought to verify the signal factor hypothesis which combines the trade off theory with the pecking order theory this study was the first one to employ the panel kpss test with sharp drifts developed by chang and ranjbar 2012 as well as the fourier function to verify that an optimal capital structure does exist for companies with more symmetric information thereby establishing the trade off theory firms with information asymmetry show adverse selection

a new linear programming approach to bond portfolio management a comment an analysis of the dual problem described by ronn 1987 reveals that it provides a powerful and easily interpretable test for the hypothesis of a single class of marginal investors including models of equilibrium based on a representative tax bracket when ronn s empirical tests are interpreted via the dual they lend additional support to his conclusions in providing a strong rejection of the representative tax bracket hypothesis a valid dual lp used to test the hypothesis can be obtained with fewer assumptions than ronn s primal in addition a minor error in ronn s presentation of the dual is corrected

average cost efficiency and optimal scale sizes in non parametric analysis under fairly general assumptions requiring neither a differentiable frontier nor a constant returns to scale technology this paper introduces a new definition of an optimal scale size based on the minimization of unit costs the corresponding measure average cost efficiency combines scale and allocative efficiency and generalizes the measurement of scale economies in efficiency analysis while providing a performance criterion which is stricter than both cost efficiency and scale efficiency measurement the average cost efficiency is not reliant upon the uniformity of the firms input price vector and we supply procedures to compute it in both convex and non convex production technologies empirical illustration of the theoretical results is given with reference to large sets of production units

tax effects in term structure estimation this study is a refinement and an extension of an earlier study by mcculloch of tax effects in the regression equation for term structure estimation this study includes tests for tax effects and heteroskedasticity a reconsideration of the need for an instrumental variable and a search for the capital gains tax rate in addition to the ordinary income tax rate there are two major findings 1 statistically significant taxinduced bias in the non tax adjusted equation and 2 evidence that the capital gains tax is misspecified in the tax adjusted equation it is well known e g see 4 2 pp 727 30 and 25 that the yield curve is an imperfect surrogate for the term structure of interest rates and various methods have been developed to estimate the term structure directly by regressing prices on payments in a sample of default free securities 1 since investors are concerned with the after tax payments on securities it is desirable to incorporate tax effects in term structure estimation mcculloch 22 and schaefer 26 29 have employed different approaches to the tax effect problem mcculloch employed the regression approach and searched for a single tax rate

impact of renewables on electricity markets do support schemes matter abstract rising renewable shares influence electricity markets in several ways among others average market prices are reduced and price volatility increases therefore the missing money problem in energy only electricity markets is more likely to occur in systems with high renewable shares nevertheless renewables are supported in many countries due to their expected benefits the kind of support instrument can however influence the degree to which renewables influence the market while fixed feed in tariffs lead to higher market impacts more market oriented support schemes such as market premiums quota systems and capacity based payments decrease the extent to which markets are affected this paper analyzes the market impacts of different support schemes for this purpose a new module is added to an existing bottom up simulation model of the electricity market in addition different degrees of flexibility in the electricity system are considered a case study for germany is used to derive policy recommendations regarding the choice of support scheme

an international study of tax effects on government bonds it is shown that coupon bonds alone are not sufficient to span time dated claims on ordinary income capital gains and non taxable wealth in an incomplete bond market where the pure dated claims are not spanned by existing bonds marginal rates of substitution between present consumption and pure dated claims on ordinary income capital gains income and non taxable wealth respectively can differ across bondholders however the relative pricing of coupon bonds in each of these countries is shown to be consistent with the tax status of the major non tax exempt holders of government debt

dea duality on returns to scale rts in production and cost analyses an occurrence of multiple solutions and differences between production based and cost based rts estimates this article discusses the concept of rts returns to scale in the framework of dea data envelopment analysis production and cost analyses focusing on an occurrence of multiple solutions and how to deal with such a difficulty dual relationships between production based and cost based rts estimates are also theoretically discussed in this study

tax induced bias in forward rates term premiums and the term structure of interest rates abstract this paper s analysis on the tax induced bias in forward rates enables us to better understand the structure of term premiums and the term structure of interest rates and to obtain a better estimate of the future interest rate in particular the anomaly of negative term premiums regarding long maturities as reported by fama 1984 is resolved

the relative pricing of u s treasury strips empirical evidence abstract we investigate pricing relations and the potential for arbitrage in the u s treasury strips market stressing the importance of reconciling quoted treasury data with actual market pricing conventions we document that stripping and reconstitution profits in the strips market are fleeting and rarely economically significant that matched maturity principal and coupon strips generally have different prices due at least in part to richness or cheapness in the underlying note or bond and that apparent negative forward rates in the strips market are concentrated in certain long maturity strips that do not actually exist at the time

estimating most productive scale size using data envelopment analysis abstract the relation between the most productive scale size mpss for paparticular input and output mixes and returns to scale for multiple inputs multiple outputs situations is explicitly developed this relation is then employed to extend the applications of data envelopment analysis dea introduced by charnes cooper and rhodes ccr to the estimation of most productive scale sizes for convex production possibility sets it is then shown that in addition to productive inefficiencies at the actual scale size the ccr efficiency measure also reflects any inefficiencies due to divergence from the most productive scale size two illustrations of the practical applications of these results to the estimation of most productive scale sizes and returns to scale for hospitals and stem electric generation plants are also provided emphasize the advantage of this method in examining specific segments of the efficient production surface

optimal over installation of wind generation facilities abstract this paper evaluates the economic benefits to over installing turbines on capacity constrained wind farm sites in order to capture more energy at low wind speeds although this implies curtailment at high wind speeds we show that over installing generation facilities can increase returns to investors and reduce system costs a detailed model based analysis is developed using british data with variations in the range of over installation the renewable policy support systems fixed feed in tariffs or green certificate premia to wholesale energy prices and the extent of replacement of fossil generation in the technology mix with wind in the cases of premia to market prices we use agent based computational learning and risk simulation to model market prices not only is over installation beneficial under fixed feed in tariffs but is more so under premia to market prices and increasingly so as wind replaces fossil generation

the progressive inefficiency of replacing renewable obligation certificates with contracts for differences in the uk electricity market abstract this paper looks at the emerging risk return profile for new renewable assets as a conventional wholesale electricity market progressively decarbonises using a detailed fundamental model of price formation risks under increasing replacement of fossil fuel facilities with onshore and offshore wind we show that the risk return profile becomes less attractive over time and may therefore need sustained and possibly increasing policy support furthermore we show that green certificate trading may become progressively more attractive as a supplementary support to wholesale prices compared to fixed feed in tariffs this is because the increasingly negative correlation between renewable output and wholesale prices reduces its revenue risk compared to fixed feed in tariffs if other factors remain constant and thereby improves conventional financial performance risk metrics in particular this suggests that the recent energy policy change in britain to move away from green certificates and into contracts for differences may have been ill founded

tax induced clientele effects in the market for british government securities abstract this paper develops a new methods for measuring tax effects in bond markets and presents empirical results for british government securities the basic idea is to construct a least cost portfolio which for investors in a given tax bracket dominates a given bond a portfolio is said to dominate a bond if it provides cash flows which are at least as great in every period and has a lower price in effect our method calculates an upper bound on the value of a bond to investors in a given tax bracket the results demonstrate i the existence of clientele effects and ii the absence of an effective tax rate

historic paths and future expectations the macroeconomic impacts of the offshore wind technologies in the uk abstract offshore wind power osw plays a key role within the uk strategy for a transition towards a low carbon economy offering vast potential for establishing a high tech manufacturing industry previous experiences in the onshore sector owp suggest the uk might fail in fully capturing these macroeconomic benefits in this work we investigate the history of uk renewable policies comparing its national strategy to those of other major osw export countries through the use of a numerical general equilibrium model we quantify the macroeconomic impacts under three scenarios a baseline which relies on previous estimates and foresee limited local content a contamination scenario where the uk content reaches the same levels of owp and a non myopic scenario where investors expect governmental support to decrease or disappear replicating a common path of past renewable policies we identify the uk as a fdi oriented country our results suggest that increasing the share of locally sourced capital goods in osp to owp level could generate larger income and employment effects in the uk economy we find that under forward looking investors the economic benefits are significantly lower than the case of myopic agents our results show an inherent conflict with stated purposes of uk policy for osw

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

firm and industry level profit efficiency analysis using absolute and uniform shadow prices we discuss the nonparametric approach to profit efficiency analysis at the firm and industry levels in the absence of complete price information two new insights are developed first we measure profit inefficiency in monetary terms using absolute shadow prices second we evaluate all firms using the same input output prices this allows us to aggregate firm level profit inefficiencies to the overall industry inefficiency besides the measurement of profit losses the presented approach enables one to recover absolute price information from quantity data we conduct a series of monte carlo simulations to study the performance of the proposed approach in controlled production environments

tax arbitrage and the existence of equilibrium prices for financial assets in models where both investors and securities are subject to differential taxation there may be no set of prices that rule out infinite gains to trade or tax arbitrage this paper characterizes the joint restrictions on financial asset returns and investors tax schedules that preclude tax arbitrage in the absence of short sale constraints the authors show that if there exists any configuration of marginal tax rates on investors tax schedules that rule out infinite gains to trade then no tax arbitrage prices will exist they also show that the existence of no tax arbitrage prices ensures the existence of equilibrium prices the effects of differential taxation on the equilibrium prices of financial assets have attracted much attention from financial economists in recent years otherwise identical securities that contribute to taxable income to different degrees will in general be valued differently by taxable investors as a result tax considerations have been useful in helping explain the effect of dividend yield on stock returns the effect of coupon levels and term to maturity on bond prices 2 the timing of investors portfolio transactions 3 and the observed capital structures of firms 4 while a rich set of observed behaviors can be better understood by reference to differential taxation there are well known difflculties in dealing with taxes in a general equilibrium setting to clear markets relative prices must reflect the marginal rates of substitution of all agents simultaneously when tax rates differ across investors however this condition can be impossible to achieve to illustrate consider a world of perfect certainty with two assets a tax exempt municipal bond and a taxable government bond to equate marginal rates of substitution the rate of return on the government bond rg must equal that on the municipal rm grossed up by one minus the investor s marginal tax rate ti that is rg rm 1 ti if there are investors in more than one tax bracket this condition will obviously be impossible to satisfy for all of them simultaneously both authors from graduate school of industrial administration carnegie mellon university we wish to thank scott richard steven spear and an anonymous referee for helping us sort through the issues considered here seminar participants at columbia wharton the johnson symposium on asset pricing at the university of wisconsin madison and the 1986 western finance association meeting also provided valuable comments we are also grateful for the financial support provided by the center for public policy research carnegie mellon university all errors are our own responsibility

a multicountry comparison of term structure forecasts at long horizons abstract this paper extends previous work on the information in the u s term structure at longer maturities to britain west germany and switzerland we find strong evidence that the term structure does have significant ability to forecast changes in inflation particularly at long maturities on the other hand the ability of the term structure to forecast changes in one year interest rates is somewhat weaker only at the very longest horizon five years is there significant forecasting ability for interest rate changes

learning from experience the development of the renewables obligation in england and wales 2002 2010 abstract the uk has enviable renewable resources both onshore wind and offshore wind wave and tidal the offshore valuation group 2010 the government has had policy mechanisms in place since 1990 to encourage these resources to be developed the current mechanism the renewables obligation ro was specifically designed to emphasise competition and therefore to fit in with the uk s overall strategic approach to energy policy however as yet it has not delivered the capacity that it was designed to do and as a result the uk faces a difficult challenge in attempting to meet european wide renewable energy targets for 2020 as well as longer term decarbonisation targets this paper explores some of the major reasons why the ro has performed so poorly to date and considers the prospects for improvement up to 2020 it concludes that the strategic emphasis on competition in the support mechanisms has played a key role in limiting renewables development but that the mechanism has changed significantly since it was introduced however these changes together with proposals for electricity market reform still do not address important elements of risk in comparison with a standard feed in tariff

what will china s carbon emission trading market affect with only electricity sector involvement a cge based study abstract on december 29 2017 china s carbon trading scheme ets was officially launched and it may be the largest emission trading platform in the world this paper establishes 5 counter measured scenarios based on the recently launched china s national ets market and constructs a dynamic recursive computable general equilibrium model to study the impact of national ets on the economy energy and environment we find that the national ets will have a negative impact on gdp by 0 19 1 44 the national ets can significantly increase the price of electricity however the increase in the prices of other commodities will be much lower than that of electricity as long as the mechanism of the ets market remains unchanged emission reduction per year will increase linearly economic output and co2 emission are sensitive to annual decline factor adf this paper argues that china s national ets market is an effective tool to reduce co2 emission and we suggest that adf could be 0 5 when allocating carbon allowance for the electricity sector this could balance economic output and co2 reduction also it is easy to achieve the goal of double control total amount and intensity in china

determining commercially viable two way and one way contract for difference strike prices and revenue receipts abstract in this article we investigate the role that a contract for difference cfd might play in increasing investment in renewable energy in australia two cfd schemes are investigated two way and one way cfd a financial model is developed that determines commercially viable cfd strike prices account is taken of revenue from wholesale electricity market and renewable energy certificate sales capital and operational costs of the project including distribution of funds to holders of equity and debt are also included findings based on analysis of the solar array located at the university of queensland gatton campus in australia is presented employing a typical meteorological year framework the major finding was that government will prefer a two way cfd scheme and single axis tracking solar pv array technology in contrast project proponents will strongly prefer a one way cfd design

special repo rates an empirical analysis duffie 1996 examines the theoretical impact of repo specials on the prices of treasury securities and concludes that all else the same an issue on special will carry a higher price than an otherwise identical issue we examine this hypothesis and find strong evidence in support of it we also examine whether the liquidity premium associated with on the run issues is due to repo specialness and find evidence of a distinct effect finally we investigate whether auction tightness and percentage awarded to dealers are related to subsequent specialness and find that both variables are generally significant underlying the cash market for u s treasury securities is the financing or repo market at any given time the repo rate for most treasury issues the general collateral rate is the same but a few issues are typically on special an issue on special has associated with it a repo rate that is less than the prevailing general collateral rate as a result the owner of a security that is on special is able to obtain below market financing rates via a repurchase agreement duffie 1996 examines the theoretical causes of repo specials and their impact on the prices of treasury securities in the context of a general equilibrium model his primary conclusion is that specialness will be priced in the cash market meaning that all else the same an issue on special or likely to go on special will carry a higher price than an otherwise identical issue we investigate this hypothesis using data on repo specials and find clear evidence in support of it we conclude that specialness is priced and that the magnitude of the cash market premium reflects both the future duration and magnitude of repo specialness we also examine whether the liquidity premium associated with on therun issues is due to repo specialness and find evidence of a distinct effect finally as a test of duffie s model we investigate whether auction tightness and percentage awarded to nonbank primary dealers are related to subsequent specialness the evidence is consistent with predictions with both variables generally significant

pricing contingent claims under interest rate and asset price risk this paper presents a general framework for pricing contingent claims under interest rate and asset price uncertainty the framework extends ho and lee s 1986 valuation framework by allowing not only future interest rates but also future asset prices to depend on the current term structure of interest rates the approach is shown to provide risk neutral valuation relationships that are consistent with the initial term structure of interest rates and can be applied to valuation of a broad class of assets including stock options convertible bonds and junk bonds

a generalized distance function and the analysis of production efficiency a generalization of shephard s distance functions is proposed extending the usefulness of distance functions in economic analysis applications to efficiency measurements and productivity analysis are presented new indexes of productivity and technical allocative and scale efficiency are proposed and analyzed interpretation of these indexes in terms of ray average cost ray average revenue and cost to revenue ratio is discussed

the determinants of corporate capital structure japanese evidence this paper features a cross sectional regression analysis of the determinants of the company debt to value ratios of a sample of 125 japanese industrial and commercial companies for the period 1980 1983 inclusive the regression equations include a set of dummy variables designed to capture industry effects and a number of other variables acting as proxies for likely determinants of debt ratios suggested in the empirical literature such as profitability non debt tax shields risk etc the results are consistent with the existence of industry effects and suggest that paralleling recent american findings profitability is the most significant determinant of japanese company debt ratios

policy interactions risk and price formation in carbon markets carbon pricing is an important mechanism for providing companies with incentives to invest in carbon abatement price formation in carbon markets involves a complex interplay between policy targets dynamic technology costs and market rules carbon pricing may under deliver investment due to r d externalities requiring additional policies which themselves affect market prices also abatement costs depend on the extent of technology deployment due to learning by doing this paper introduces an analytical framework based on marginal abatement cost mac curves with the aim of providing an intuitive understanding of the key dynamics and risk factors in carbon markets the framework extends the usual static mac representation of the market to incorporate policy interactions and some technology cost dynamics the analysis indicates that supporting large scale deployment of mature abatement technologies suppresses the marginal cost of abatement sometimes to zero whilst increasing total abatement costs however support for early stage r d may reduce both total abatement cost and carbon price risk an important aspect of the analysis is in elevating risk management considerations into energy policy formation as the results of the stochastic modelling indicate wide distributions for the emergence of carbon prices and public costs around the policy expectations

arbitrage pricing transaction costs and taxation of capital gains abstract this paper examines one of the few cases of seemingly redundant securities sets of three government bonds with the same maturity date within the bounds on relative bond prices established by tax exempt investors in a market with proportional transaction costs the taxation of capital gains on the basis of realization has a significant impact on relative prices the empirical evidence supports the tax option effect discussed by constantinides and ingersoll but does not generally support the segmented tax clientele equilibrium discussed by schaefer

supporting the externality of intermittency in policies for renewable energy abstract we analyse the joint problem of supporting renewables and resource adequacy in a liberalised electricity market and present a detailed model based comparison of two alternative policies we undertake this in the context of the british market we show how ceteris paribus the progressive replacement of coal with wind imposes extra costs of reserve and evaluate alternative way to meet this whether through capacity payments funded by customers or a reliability requirement on wind generators with capital cost or energy feed in subsidies we consider the reality of market concentration and the extent to which pragmatic regulation could allow prices to rise above marginal cost to reduce the extent of direct subsidies and complex market designs we also evaluate the implied cost of carbon reduction in a progressive replacement of coal with wind when the security is maintained by extra peaking gas we find that support through capital allowances rather than the energy market is more efficient