THE EFFECTS OF FIRM BOUNDARY AND FINANCING CONSTRAINTS ON UTILITY COSTS: THE CASE OF MUNICIPALLY OWNED ELECTRICITY DISTRIBUTION UTILITIES

ABSTRACT: A number of studies have examined costs and potential for scale and scope economies in electricity distribution; however, few if any, have examined this area in terms of the unique constraints associated with municipal ownership or historical and regulatory constraints associated with former municipal ownership. This paper focuses on 19 distribution‐only municipally owned utilities for a ten‐year period (1988–97). Distortions from variable outputs but largely fixed inputs are minimized. The data used were collected specifically to assess productivity, cost, and efficiency performance and include value‐based capital inputs and service prices. Outputs include energy conveyed and number of connections; inputs include capital, system losses, labour, and materials. We examine the effect of using third‐party financing (e.g., connection charges), with its inherent principal‐agent problems, on utility costs, as well as the effect of shared services and multi‐utility output (e.g., electricity and water). A translog total cost function is estimated. Our findings suggest significant returns to scope but also significant increases in costs associated with the use of third‐party financing. The results also suggest scale diseconomies. Shared outputs, which have been greatly restricted or eliminated under restructuring, may have provided larger, and now lost, economies than the scale returns blindly pursued by some through restructuring or incented/forced mergers or divestitures. Finally, it is clear that third‐party financing can raise costs; such financing is widely used among utilities providing electricity, gas, water, and telecommunications, and should be closely scrutinized.     

专业化产业集聚、空间成本与区域工业化

本文扩展了贸易成本的范围,认为贸易成本不仅包括产品运输成本,而且也包括要素流动成本,并引入前后向产业联系,认为中间产品使用及种类的增加所创造的成本和需求联系效应有利于提高最终产品的生产效率。在此基础上文章发展了可解的中心-外围模型,并探讨了在各种条件下相应的经济学含义,认为在推动我国区域经济一体化的进程中,对落后地区的技术支持必不可少,重视区域间产业发展的互动,否则,我国区域经济一体化进程难以有效推进。     

INTERNATIONAL COMPARISONS OF LABOR COSTS IN MANUFACTURING

This paper presents a comparative study of the levels of unit labor costs in the manufacturing sectors of several countries. We begin by surveying earlier estimates of relative productivity and unit labor cost levels and evaluating the various methodologies that have been used in previous studies. Empirical estimates of relative unit labor costs, based on output levels that are translated at purchasing power parity exchange rates, are then presented and compared to earlier estimates. The results show that the relative levels of unit labor costs in the United States and abroad have fluctuated significantly in recent years, due largely to movements in nominal exchange rates. In 1988, unit labor costs in the United States were below the average level of other industrialized countries, but were significantly above the level in a representative newly industrialized country, Korea. Insofar as unit labor costs serve as an indicator of international competitiveness, these results imply that the competitiveness of the U.S. manufacturing sector had improved significantly since 1985, at least with respect to other major industrialized countries.     

PRODUCTIVITY IMPROVEMENTS AND FALLING TRADE COSTS: BOON OR BANE?*

This article looks at two features of globalization, namely, productivity improvements and falling trade costs, and explores their effect on welfare in a monopolistic competition model with heterogenous firms and technological asymmetries. Contrary to received wisdom, and for reasons different from adverse terms of trade effects, it is shown that improvements in a partner's productivity must hurt us. Moreover, falling trade costs can raise welfare in the technologically advanced country while reducing it in the backward one, if technological asymmetries are large enough.     

PRELIMINARY ESTIMATES OF CUMULATIVE PRIVATE AND EXTERNAL COSTS OF ENERGY

This is a summary comparison and "first rough cut" cumulation of recent estimates regarding private and external costs of energy. The estimates of external costs take into consideration damage to health and property caused by air pollution from coal, oil, and gas; damage caused by acid rain from coal, and costs of reducing acid rain; costs of delaying global warming caused by carbon dioxide from coal, oil, and gas; national security costs of importing oil, and benefits of oil security; national security costs of minimizing damage from terrorist attacks on nuclear power plants; insurance subsidies for nuclear accidents; storage of nuclear waste; loss of nuclear reactors from accidents and safety risks; and benefits from additional nuclear safety requirements. The estimates of private costs focus on nuclear plants, coal, oil, gas, conservation, wind, solar power plants, and geothermal steam.     

MARKUPS AND WELFARE COSTS OF BUSINESS CYCLES IN TURKEY

The paper, using a simple theory‐based measure of the variations in aggregate economic efficiency in a New Keynessian structure, analyses the nature of the business fluctuations and estimates their welfare costs in Turkey during the period 1998–2009. The measure contains two components: a price markup and a wage markup. It seems that the latter mainly drives the fluctuations in Turkey. The paper also shows that inefficient fluctuations in the allocation of resources do generate moderate welfare costs on average. However, the aggregate efficiency costs increase much more during deep recessions.     

Is a little sunshine all we need? On the impact of sunshine regulation on profits,productivity and prices in the Dutch drinking water sector

This paper analyzes the performance of Dutch drinking water utilities before and after the introduction of sunshine regulation, which involves publication of the performance of utilities but no formal price regulation. By decomposing profit change into its economic drivers, our results suggest that, in the Dutch political and institutional context, sunshine regulation was effective in improving the productivity of publicly organised services. Nevertheless, while sunshine regulation did bring about a moderate reduction in water prices, sustained and substantial economic profits suggest that it may not have the potential to fully align output prices with economic costs in the long run. In methodological terms, the DEA based profit decomposition is extended to robust and conditional non-parametric efficiency measures, so as to account better for both uncertainty and differences in operating environment between utilities.     

INDEX NUMBERS AND THE COMPUTATION OF FACTOR PRODUCTIVITY1

For purposes of analyzing the nature and meaning of index number formulas to be used in the calculation of factor productivity, a distinction is made between interetemporal comparison of factor productivity for a single country and contemporaneous comparison of factor productivity in two different countries. In the former case, the country in question is supposed ideally to be realizing fully its production possibilities, and the concern is seen as appraisal of shifts in such possibilities over time due to the advance of technological knowledge. Following Moorsteen such an advance is taken to be represented by the change in capacity to produce a standard mix of outputs per unit of a standard mix of inputs. Any mix might be standard, but those actually realized at the times in question are of particular interest. The index number formulas to be applied then depend on the assumed shape of the functions representing production possibilities. The conventional practice of aggregating output arithmetically and inputs geometrically, for example, is in order where production possibilities are given by an elaborated Cobb-Douglas function, but achieves only more or less approximate results otherwise. The analysis necessarily bears also on the prices at which inputs and outputs are to be valued. For the case of contemporaneous comparison of different countries, technological knowledge is taken ideally to be the same in the countries considered. Hence the concern is to gauge differences in production efficiency, i.e., realization of production possibilities. With production capacity understood to reflect any shortfall from possibilities, and hence production inefficiency in that sense, the analysis proceeds much as before, but given the fact of inefficiency determination of suitable prices for valuation of inputs and outputs becomes relatively difficult. Alternative expedients, none entirely satisfactory, are explored.     

资本深化、资源配置效率与全要素生产率：来自小企业的发现*

关于资本深化促进生产率提升、资源错配导致企业全要素生产率低下的问题，学术界基于大中型企业的研究已基本达成共识，而针对小企业研究较少。本文构建三者之间的理论模型，并基于江苏省小企业数据进行实证检验。研究发现，资本深化对资源配置效率的影响呈现倒U型，而与生产率为U型关系。资本深化程度较低或较高的企业改善资源配置效率可以促进生产率提升，而中等水平的企业呈现抑制效应。这在小规模企业、低技术行业中更加明显。小企业面对劳动工资、利率水平上涨，其资源配置效率被抑制，但是能够提升企业生产率。本文的政策启示是政府在支持中小企业投融资的同时，对中小企业人才和用工政策应予以更多支持。     

OIL SPILL REDUCTION AND COSTS OF SHIP DESIGN REGULATION

The 1990 Oil Pollution Act mandates double hulls for new ocean-going tankers unless the U.S. Coast Guard can find superior designs to reduce oil spill risks. This paper, based on a 1991 National Research Council (NRC) study of alternative tanker designs, examines policy implications of prescribing construction standards. Alternative construction designs for tankers, such as that of the Exxon Valdez, have markedly differing effects both on oil transport costs and on the risks of future oil spills. Annual costs of shipping oil to the United States would rise by anywhere from $462 million to $2,047 billion, depending on which of five plausible designs are selected. The chief objective of such designs is to reduce the outflow of oil occurring during groundings and collisions. Over the past decade, an average of about 7,500 tons have spilled annually from these causes in U.S. waters—representing roughly 20 percent of transportation-related maritime oil pollution in 1990. NRC-sponsored simulation research indicates that the various designs likely would prevent 2,600–5,600 tons from being spilled in a typical year. The paper presents cost-effectiveness comparisons of the alternatives, contrasting these with available information on societal benefits per ton of oil spill avoided. Costs appear substantial relative to benefits, and lawmakers' emphasis on design standards deflects attention from alternative risk reduction strategies—e.g., operation and maintenance measures—that warrant equal attention.     

SUNK COSTS OF CAPITAL AND THE FORM OF ENTERPRISE: INVESTOR‐OWNED FIRMS AND WORKER‐OWNED FIRMS*

ABSTRACT ** : This paper examines implications of sunk costs of capital for efficient forms of enterprise. It is assumed that firm owners and outside traders are asymmetrically informed of venture risks, and that there are sunk costs associated with investment in physical and human capital. We then make an efficiency comparison between investor‐owned and worker‐owned firms. We find that the firm is efficient when it is owned by the input supplier (the investor or worker) who incurs large sunk costs. This is because such an input supplier can credibly signal to the other input supplier that he in fact has a safe project. An empirical study based on the Japanese manufacturing industry seems to support the theoretical result.     

PRIVATIZATION AND LIBERALIZATION: COSTS AND BENEFITS IN THE PRESENCE OF WAGE-BARGAINING

ABSTRACT ** :  The most important economic motive for privatization and liberalization is to reduce costs, which are believed to be higher in a public monopoly for several reasons, including internal rent capture. We assume that there is wage-bargaining both before and after privatization and liberalization. Wages are then in most cases reduced by liberalization but not by privatization as such. Social welfare may increase after liberalization with decentralized wage-bargaining if many firms enter, if the employees' bargaining strength is high and if there is no need of vertical separation. However, the social costs of privatization and liberalization are more likely to dominate despite free entry if sunk costs are high, and will always dominate under central wage-bargaining or vertical separation.     

COSTS AND BENEFITS OF REDUCING AIR POLLUTANTS RELATED TO ACID RAIN

The 1990 Clean Air Act Amendments initiated a dramatic reduction in emissions of sulfur dioxide and nitrogen oxides by electric power plants. This paper presents the results of an integrated assessment of the benefits and costs of the program. Dramatic uncertainties characterize the estimates especially with respect to the benefits of the program, many of which were modeled explicitly. The lion's share of benefits results from reduced risk of premature mortality, especially through reduced exposure to sulfates, and these expected benefits measure several times the expected costs of the program. Significant benefits also are estimated for improvements in health morbidity, recreational visibility, and residential visibility, each of which measures approximately equal to costs. Areas that were the focus of attention in the 1980s—including effects to soils, forests, and aquatic systems—still have not been modeled comprehensively, but evidence suggests that benefits in these areas are relatively small, at least with respect to "use values" for the environmental assets that are affected.     

NUCLEAR POWER, SYSTEMATIC RISK, AND THE COST OF CAPITAL

Previous studies of the effects of adoption of nuclear technologies by electric utilities have concentrated on the period following the catastrophe at Three Mile Island (TMI) in 1979. The purpose of this study is to test whether increased risk effects on equity costs of nuclear-adopting utilities existed prior to that event. This study, using panel data and beta measures of systematic risk, concludes that a positive, significant, and persistent nuclear adoption effect existed even prior to TMI. Nuclear adoption increased equity costs, on average, 0.8 percent for periods following the adoption event. This is of the same order of magnitude as adoption effects estimated in other studies for the post-TMI period.     

TRANSPORTATION COSTS,AGRICULTURAL PRODUCTIVITY,AND CROSS‐COUNTRY INCOME DIFFERENCES*

I study the role of transportation for development by introducing regional trade and a transportation sector into the standard two‐sector model of agriculture–nonagriculture. Low transport productivity can distort the allocation of resources across geographically dispersed production units within sectors and between agriculture and nonagriculture. I infer cross‐country transport productivity disparities from observed domestic transport costs and transport infrastructure stocks. “Endowing” rich countries with the transport productivity of poor countries would reduce their income by 10%. Combining transport productivity disparities with disparities in nonagricultural productivity and arable land the model yields a 50% higher rich–poor income ratio than the two‐sector model.     

风险偏好的差异性与融资的多样性

我们认为,公众公司(public company)的企业价值不仅依赖于企业家事后的管理行动,而且依赖于企业家的事前努力。为了实现企业价值最大化,不仅需要给予投资者企业的控制权以遏止企业家的机会主义行为,而且还需要激励企业家的事前努力。也就是说,企业价值不仅受到控制权安排的影响,而且离不开一份企业家收益与企业绩效直接挂钩的激励计划。在如此一份激励计划下,投资者的风险偏好差异性不再是无关紧要的,因为一种区分投资者偏好的融资方式可以节约企业的融资成本,使企业有更多的现金流来激励企业家努力工作。本文证明了,多样性的融资方式,即适当比例的债权—股权融资,在一定的条件下是一种最优的融资机制。而且,在企业家拥有一定初始财富的假定下,我们解释了为什么存在各种各样的资本结构。     

EQUILIBRIUM GROWTH IN A MONETARY ECONOMY WITH TRANSACTIONS COSTS*

The paper describes a dynamic general equilibrium monetary economy with technological primitives that are consistent with the possibility of asymptotic equilibrium growth. The paper focuses on the relationship between equilibrium financing constraints on investment goods, transaction costs and economic growth. A generalized growth condition is derived that involves both monetary growth rates and transaction costs. The condition is used to show that (i) although inflation taxes can potentially exert a negative influence on long-run economic growth, these growth effects cannot in general be arbitrarily large; and (ii) for some monetary growth rates, money is superneutral in contrast to the models of Stockman and Abel. Numerical work indicates that although the welfare and growth effects of decreasing nominal interest rates from a benchmark are large, the costs associated with raising nominal interest rates from benchmark are not.     

SOCIAL COSTS OF ELECTRICITY GENERATION: WIND AND PHOTOVOLTAIC VERSUS FOSSIL AND NUCLEAR

This paper presents the results of research on the total costs to society of different technologies for electric power production in the Federal Republic of Germany. The analysis views electricity costs from a macroeconomic perspective and includes the internal or private costs as well as the social costs. The focus is on fossil and nuclear fuels as conventional energy sources on the one side and on wind and photovoltaic electricity as examples of renewable energy sources on the other.     

声誉、搜寻成本与网上交易市场均衡

本文在搜寻理论的框架内分析了在卖家声誉存在差异的情况下,网上拍卖市场搜寻成本对价格水平和价格离差的影响,进而考察了搜寻成本对网上市场声誉机制的影响。本文的结论是:尽管搜索工具提高了网上交易市场的效率,但网上交易市场仍存在不可忽视的搜寻成本;较高的搜寻成本导致不同声誉水平的卖家同时存在于网上交易市场,高声誉卖家制定的价格较高,低声誉卖家制定的价格较低;搜寻效率的提高可以降低均衡价格水平,网站提供的推广服务也可以降低搜寻成本,降低均衡价格水平。模型很好地解释了网上拍卖市场中的一些现象,也与最近文献的经验事实有较好的吻合。     

THE OPPORTUNITY COSTS OF REDWOOD NATIONAL PARK: COMMENT AND ELABORATION

In a recent issue of this journal, Walker (1984) emphasized the need for good economic analysis in public evaluation of national park expansions. We support this but would like to show that a possible reason the economic analysis referred to in Walker's paper was ignored may be the very narrow way in which his analysis was performed. In particular, the opportunity cost per visitor day of Redwood National Park may have been overstated by a factor of 10 by implying the sole benefits of the park expansion were associated with only 10 percent of the park's use days. More importantly, substantial literature on off-site economic benefits arising from preservation of natural environments is completely ignored. Since the legal purpose of the national parks is not solely related to recreation, this omission reflects a large error in the analysis. This paper's purpose is to apply sensitivity analysis to the opportunity costs per visitor day and illustrate some policy analysis tools commonly used by natural-resource economists, in and out of government, for evaluating the economic efficiency benefits of preserving unique natural environments. Applying these tools indicates the cost of Redwood National Park may have been as low as 90 cents per household in the United States.