substitution in the electric power industry an interregional comparison in the eastern us abstract the electric power industry is restructuring as regulations move from states to regional and national levels estimates of regional fuel and input substitution are essential for practitioners and policy makers this paper estimates substitution under static and dynamic scenarios examining changes in technology and total factor productivity from 2001 to 2008 two stage estimation reveals regional characteristics and underlying elements in fuel and factor choice processes substitution varies widely depending on the region coal technology capital investment and r d activities

the effect of deregulation on us fossil fuel substitution in the generation of electricity abstract fossil fuels produce the majority of electricity in the us with coal being by far the most popular fuel used in the past regulation in the natural gas market in the form of well head price controls and under the boiler fuel use restrictions distorted fuel use away from natural gas more recently with deregulation in the natural gas industry these restrictions have been repealed which has changed fuel use patterns to measure the short run fuel use response from regulatory and other market changes we estimate interfuel substitution using two flexible functional forms the translog and the logit on monthly data from 1991 to 1993 in both models we find coal demand has the least elastic price response while gas and oil demand have the highest both models also suggest there is substitution across fuels in the short run but the patterns and magnitudes vary from comparisons with earlier studies fuel use price response is also found to vary across market conditions and regulatory regime

market based empirical research in accounting a review interpretation and extension a decade and a half of the most concerted and ambitious research effort in accounting history is evaluated here it is the search into the relationship between publicly disclosed accounting information and the consequences of the use of this information by the major group of usersequity investors as such consequences are reflected in characteristics of common stocks traded in major exchanges this research effort known as market based accounting research mbar obtained its impetus from major developments in finance theory during the late 1950s and early 1960s these were the portfolio selection theory and its offspring the capital asset pricing model capm and the concept of informationally efficient capital markets ecm subsequent developments in information economics agency theory and optimal incentive signaling models were quickly incorporated into mbar while the impetus to this line of research came from other disciplines accounting was not only a beneficiary but also to a modest extent a benefactor mbar is relevant to the study of capital market efficiency the capm information economics and regulation this contribution distinguishes mbar from most accounting areas whose contributions to other disciplines are negligible in

is coal desulphurisation worthwhile evidence from the market abstract the paper develops a forward looking way to estimate the economic benefits of research and development on coal desulphurisation the methodology makes use of survey based techniques pioneered in environmental economics the empirical results illustrate the difficulty of configuring desulphurised coal to meet the requirements of existing electricity generating plants in addition to estimating the returns to investment in coal desulphurisation the contributions of the paper are in extending survey based valuation to meet the needs of r d investors for intelligence about the prospective value of their investments and using robust estimation techniques to reduce the influence of outliers

interfuel substitution in us electricity generation ongoing changes in the us electricity market include restructuring and increased competition with this unfettering of the market the fuel choice in generation is expected to become more flexible and responsive to investigate this hypothesis studies of us electricity fuel choices over the last three decades are summarized and the most recent analysis is provided on a market very different from the one on which earlier studies were done modern data handling techniques allow the consideration of the most comprehensive database including 185 utilities on monthly data for 1993 this paper finds fuel choice to show a considerable amount of price responsiveness the amount of responsiveness is sensitive to the fuel substitution possibilities within the utility and the amount of responsiveness seems to have increased recently for oil and natural gas

the impact of replacement cost disclosure on security prices new evidence abstract a number of studies have tested for information content in the asr 190 disclosure by comparing the conditional and unconditional distribution of abnormal security returns around the time of disclosure since no differences were observed it was concluded that asr 190 had no information content the study reported below performs a similar test by estimating the regression function of the conditional distribution of abnormal returns this test procedure controls for the information content in contemporaneous historical cost disclosure and uses a conditioning variable not considered in earlier tests it finds statistically significant stock price effects however because most of the effects appear to precede the official announcement date by several months it is unclear whether stock prices were responding to the leakage of the information content of asr 190 prior to disclosure to private production of information contained in asr 190 or to a variable omitted from the study which happens to be correlated with replacement costs

a dynamic analysis of interfuel substitution for swedish heating plants abstract this paper estimates a dynamic model of interfuel substitution for swedish heating plants we use the cost share linear logit model developed by considine and mount considine t j mount t d 1984 the use of linear logit models for dynamic input demand systems review of economics and statistics 66 434 443 all estimated own price elasticities are negative and all cross price elasticities are positive the estimated dynamic adjustment rate parameter is small however increasing with the size of the plant and time indicating fast adjustments in the fuel mix when changing relative fuel prices the estimated model is used to illustrate the effects of two different policy changes

substitution between clean and dirty energy inputs a macroeconomic perspective in macroeconomic models the elasticity of substitution between clean and dirty energy inputs within the energy aggregate is a central parameter in assessing the necessary conditions for long run green growth using new sectoral data in a panel of 26 countries we formulate specifications of nested constant elasticity of substitution production functions that allow estimating this parameter for the first time we present evidence that it significantly exceeds unity a favorable condition for promoting green growth

evidence on the effect of bond covenants and management compensation contracts on the choice of accounting techniques the case of the depreciation switch back abstract provisions of bond indenture agreements and management compensation contracts are examined to derive testable implications concerning management s incentives to choose among alternative accounting techniques the hypotheses are subjected to empirical examination by investigating the voluntary change from accelerated to straight line depreciation for financial reporting purposes only the methodology utilized incorporates an expectations model of accounting earnings in an attempt to separate out of the effects of earnings announcements from accounting change announcements which are often concurrent the evidence from both price and non price data is not consistent with the general hypothesis that bond covenants and management compensation contracts are important determinants of the decision to change depreciation techniques five potential explanations for the results are offered

imperfect competition functional forms and the size and distribution of research benefits abstract the effects of functional forms for supply and demand on the size and distribution of the returns to research are examined under a range of forms of competition under perfect competition the choice of functional form is relatively unimportant for the estimation of research benefits under imperfect competition the combination of the choice of functional forms for supply and demand and the nature of the research induced supply shift can have profound implications for the results functional form plays a much more important role than in the competitive model the most important contrast is between the constant elasticity model and the linear model along with various cases of a generalized linear model these findings are illustrated using a combination of analytical results and numerical simulations

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

electric utilities fuel use and responsiveness to fuel prices this research tests the impact of changes in fuel price to explain fuel use by electric utilities we employ a three stage least squares model that explains changes in fuel use as a function of changes in three fuel prices this model is repeated across sub samples of data aggregated at the plant level and operating holding company level we expect that plants and holding companies reduce fuel use when fuel prices rise several fuel substitution effects within and across plants and holding companies are demonstrated as well as several frictions at the plant level higher prices of natural gas lead to less natural gas consumption less coal consumption and more fuel oil consumption at the operating holding company level results demonstrate the inelasticity of coal use and the increases of natural gas in response to higher coal prices subsamples demonstrate heterogeneity of results across different plants results emphasize that technological market and regulatory frictions may hinder the performance of energy policies

determinants of the corporate decision to capitalize interest abstract until 1974 firms could choose within gaap to capitalize or expense interest costs associated with capital expenditures the predominant practice had been to treat interest as a period expense however in 1974 the securities and exchange commission imposed a moratorium on further adoption of interest capitalization by non regulated firms this study empirically examines economic factors potentially influencing firms decisions to expense or capitalize interest prior to the sec moratorium we hypothesize that the choice may be affected by 1 the existence of management compensation agreements tied to reported earnings 2 debt covenant constraints and 3 the political costs for some firms of reporting higher earnings when compared to the control group our findings are that 1 the frequency of explicit management compensation packages was not greater for the interest capitalization group 2 firms with financial ratios closer to likely debt agreement constraints on dividends interest coverage and leverage tended to elect interest capitalization and 3 other than the largest firms in the politically sensitive petroleum refining industry the larger firms were more likely to capitalize interest

cross sectional association between abnormal returns and firm specific variables abstract abnormal returns market model prediction errors are the subject of many event studies in accounting and finance literature conditional on the event of interest researchers have recently used cross sectional regressions to examine relations between abnormal returns and firm specific variables this paper demostrates that non constant variences and covariances in market model residuals across firms introduced bias in the estimated slope coefficients of the independent variables i e the expected signs of the estimated slope coefficients can be predicted a priori a method is develope to removed the bias in the estimated slope coefficiets and is found to be effective this method explicitly takes the dependence among abnormal returns across firms into account methods that assume abnormal returns across firms to be independent do not control for such bias

on cross sectional analysis in accounting research abstract this paper examines cross sectional analysis procedures common to many market based accounting research papers both the economic and econometric properties of levels and returns studies are discussed topics covered include the relations between the accounting studies and cash flow valuation models the role of expectations of accounting variables deflators spurious inference risk adjustment and its relation to growth size and leverage residual dependence dependence among explanatory variables and the effect of scale differences across firms major conclusions are that market value is the correct deflator in returns studies and that levels and returns studies are economically but not econometrically equivalent

fuel switching and climate and energy policies in the european power generation sector a generalized leontief model abstract the purpose of this paper is to analyze a the role and the nature of price induced switching behavior between fossil fuels i e coal oil and natural gas in the western european power sector as well as b the fuel choice impacts of a number of public policies implemented in this sector during the last 20 years the analysis is conducted within a generalized leontief cost function framework and employs pooled data across eight countries over the time period 1978 2004 we present short run own and cross price elasticities of fossil fuel demand and assess the impacts of a set of government policies implemented over this time period the empirical results show evidence of notable short run interfuel substitution between oil and gas and particularly in countries where fossil fuels are used extensively for both base and peak load purposes these findings support the notion that ex post fossil fuel substitution takes place in dual and multi fired plants by switching load between different single fuel fired plants as well as through the conversion of power plants to be able to burn alternate fuels the results also illustrate that different public policies i e removal of coal subsidies electricity market liberalization etc have had profound impacts on fossil fuel choices and have in particular favored power generation gas use at the expense of coal finally the paper makes use of the empirical results to simulate the fuel switching impacts of different carbon prices within the european emissions trading scheme eu ets

the economics of fuel choice at us electric utilities abstract this paper compares and contrasts results obtained from estimating fossil fuel cost shares in the generation of electricity in the usa from two models one national and one regional while the national model provides acceptable first order results correct signs and magnitudes of critical parameters it is the regional model that reveals the underlying economics of this fuel choice problem results which hold consistently across regions and across fuels are more plausible than those which are found to be special cases in each region of the country or for each fuel type

evidence of the impact of mandatory changes in accounting principles on corporate loan agreements abstract the theory in this paper predicts that mandatory changes in accounting princples can affect the measurement rules defined in restrictive covenants in firms lending agreements consequently those mandatory changes can have an impact on the value of a firm s equity even if the changes appear to be merely cosmetic this contracting cost theory is tested by examining of both event related and cross sectional abnormal performance of the equity of a sample of firms when the accounting princples board changes accounting princples for business combinations the theory provides at best in incomplete explanation of the observed abnormal performance

cross sectional dependence and problems in inference in market based accounting research this paper provides a framework and some empirical evidence to evaluate the seriousness of problems in inference that arise in stockreturn based studies when the data are cross sectionally dependent the study is motivated on the grounds that statistical procedures designed to address such problems are often infeasible and even when they can be implemented they sometimes introduce other more serious difficulties thus researchers have frequently adopted an approach that ignores the cross sectional dependence e g ordinary least squares ols the objective of this paper is to help identify the contexts in which ignoring the dependence would lead to serious misstatement of significance levels cross sectional dependence in stock returns data is likely to exist when at least some of the returns are sampled from common time periods this would be the case in all studies of the reaction of stock prices to a

fossil fuel flexibility in west european power generation and the impact of system load factors this paper analyzes short run interfuel substitution in west european power generation and the impact of system load factors on fossil fuel choice the problems are studied within a restricted translog cost share model the paper concludes that interfuel substitution in existing power plants is substantial especially that between oil and gas this is consistent with the notion that short run fuel substitution takes place in dual or multi fired plants by switching load between different single fired plants and by some conversions of power plants to be able to burn alternate fuels the empirical investigation also indicates that the system load factor is a notable determinant of fossil fuel choices in west europe and the paper ends with an assessment of the fuel consequences of some load management schemes in the region

the incremental information content of replacement cost earnings abstract the study explores the incremental explanatory power of replacement cost earnings variables derived from asr 190 data with respect to explaining cross sectional differences in security returns as such the study is a natural extension of previous research including analyses of the effect of security returns of asr 190 data at the time of disclosure investigations of cross sectional relationships between security returns and historical cost earnings and studies of multiple signals the basic finding is that pre holding gain net income provides no incremental explanatory powerm given knowledge of historical cost earnings however the converse does not hold taken together the findings are consistent with the contention that pre holding gain net income is a garbled version of historical cost earnings the basic finding is robust under several extensions of the initial research design the research design incorporates a two stage approach which permits a determination of the incremental explanatory power of collinear variables the findings are in contrast to those of a previous study by easman et al 1979 the nature of the difference in research design inducing the difference is identified potential reasons for the difference in findings are provided

an income strategy approach to the positive theory of accounting standard setting choice abstract this paper is designed to provide additional evidence on the positive theory of accounting policy choice by combining individual accounting principles into firm income strategies these strategies were the dependent variable in a probit analysis where the independent variables were size management compensation industry concentration ratio systematic risk capital intensity and the total debt to total asset ratio the results indicate that four of these factors size management compensation concentration ratio and the total debt to total asset ratio have a significant association with the choice of a firm s income strategy this test provides strong evidence consistent with the positive theory of accounting standard setting choice we also present evidence that smaller firms and or firms in less concentrated industries do not appear to make accounting policy choice decisions that are consistent with this theory

elasticity of substitution and technical efficiency evidence from the us electricity generation abstractthe implications of national or regional energy policies for technical efficiency and environmental outcomes in electricity generation depend on fossil fuel input substitution this study u