Efficiency analysis of German electricity distribution utilities – non-parametric and parametric tests

This study applies non-parametric and parametric tests to assess the efficiency of electricity distribution companies in Germany. Traditional issues in electricity sector benchmarking are addressed, such as the role of scale effects and optimal utility size, as well as new evidence specific to the situation in Germany. Labour, capital, and peak load capacity are used as inputs, and units sold and the number of customers as output. The data cover 307 (out of 553) German electricity distribution utilities. A data envelopment analysis (DEA) is applied with constant returns to scale (CRS) as the main productivity analysis technique, whereas stochastic frontier analysis (SFA) with distance function is the verification method. The results suggest that returns to scale play but a minor role; only very small utilities have a significant cost advantage. Low customer density is found to affect the efficiency score significantly, in particular in the lower third of all observations. Surprisingly, East German utilities feature a higher average efficiency than their West German counterparts. The correlation tests imply a high coherence of the results.     

The dynamics of market structure and firm-level adjustment to India's pro-market economic liberalizing reforms, 1988–2006: A Time Varying Panel Smooth Transition Regression (TV-PSTR) approach

This paper for the first time employs the Time Varying Panel Smooth Transition Regression (TV-PSTR) approach to model the dynamic adjustments of firms and the evolution of industrial structure in the bigger setting of decades against the backdrop of India's dramatic liberalizing reform starting from 1991. Using Indian manufacturing firm data, it finds that the transition of market structure and productivity after liberalization did follow a smooth transition process. Instead of the previously assumed instantaneous ‘big-bang’ shift just after reforms, it actually took years for the Indian manufacturing industries start to react to the reforms, and the transitional impact of reforms took approximately four to eight years to complete. There is strong evidence of increased competition after the transition, with shrinked returns to scale (RTS) in most industries except for leather and chemical industries. The results on total factor productivity (TFP) are mixed: most import-competing industries, which suffer most from the shrinking of market size experienced no change or decreasing TFP growth; whereas the export-oriented industry, as the industry which benefits most from economy of scale, enjoyed a huge TFP growth following the reforms.     

Determinants of firm start-up size in the Brazilian industry: an empirical investigation

The article investigates the determinants of newly created industrial establishments in Brazil in 1997 taking as reference explanatory variables referring to market structure and industry dynamics, stronger effects are detected for larger firms. Minimum efficient scale, industry size, industry growth and turbulence display the expected positive effects on firm size, but the intensity of those are more pronounced for larger firms. The suboptimal scale variable, on the other hand, exhibits a counterintuitive positive effect and perhaps other types of barriers to entry that are not related to scale aspects may be important in the Brazilian case.     

Exchange Rate Exposure of Chinese Firms at the Industry and Firm Level

This study investigates the exchange rate exposure of Chinese firms at the industry and firm level based on the conventional capital asset pricing model (CAPM) framework. At the industry level, the dynamic conditional correlation MGARCH (DCC MGARCH) estimates demonstrate that the market model and three‐factor model are appropriate for exposure measurements, and industry returns are more likely to be exposed to unanticipated changes in the real exchange rate and the trade‐weighted effective exchange rate, particularly for manufacturing industries. At the firm level, although the seemingly unrelated regression (SUR) estimates vary across markets, it is apparent that there is a relationship between firm size and exposure effects, which also show that lagged exchange rate changes have significant exposure effects on firm returns. This study finally suggests that non‐financial firms should set up special commissions to hedge currency risks of their future cash flows.     

企业规模异质性与产业集聚：来自中国制造业的证据

基于中国制造业数据,本文检验了企业规模异质性与制造业地理集中的互动联系。研究表明企业规模因素对制造业地理集中具有显著影响。按素密集度对制造业的分类回归进一步表明,上述影响存在行业差异：劳动力与资源密集型行业的相关性不稳健,但资本技术密集型行业的结果是稳健的。这意味着资本技术密集型行业的企业规模分布具有地理集中倾向：大市场集中分布了更多大规模企业。这一结论表明制造业集聚具有规模异质性：小规模企业通过集聚经济,促进生产率提高形成制造业集聚,大规模企业则通过集中分布在大市场而形成制造业集聚。另外,从制造业集聚的驱动力量看,制造业集聚的强化效应与地区异质因素两股力量都在推动制造业地理集中,由此可以判断制造业集中趋势还将持续。     

Are Municipal Electricity Distribution Utilities Natural Monopolies?

The purpose of this study is to analyse the cost structure of the Swiss electricity distribution utilities in order to assess economies of scale and density and the desirability of competition in the distribution of electric power. A translog cost function was estimated using panel data for a sample of 39 municipal utilities over the period 1988–1991. The results indicate the existence of economies of density for most output levels and the existence of economies of scale only for small and medium-sized electric utilities. The empirical evidence suggests that franchised monopolies, rather than side-by-side competition, is the most efficient form of production organization in the electric power distribution industry. Further, the majority of the utilities analysed do not operate at an optimal service territory size. Therefore, the consolidation of small utilities whose service territories are adjacent is likely to reduce costs.     

Firm selection and industry evolution: the post-entry performance of new firms

A dynamic framework based on the process of firm selection and industry evolution is used to analyse the post-entry performance of new firms. In particular, it is hypothesized that, based on the stylized fact that virtually all new firms start at a very small scale of output, firm growth and survival are shaped by the need to attain an efficient level of output. The post-entry performance of more than 11,000 U.S. manufacturing firms established in 1976 is tracked throughout the subsequent tenyear period. Firm growth is found to be negatively influenced by firm size but positively related to the extent of scale economies, capital intensity, innovative activity, and market growth. By contrast, the likelihood of survival is identified as being positively influenced by firm size, market growth, and capital intensity, but negatively affected by the degree of scale economies in the industry. When viewed through the dynamic framework of firm selection and industry evolution, the empirical results shed considerable light on several paradoxes in the industrial organization literature, such as the continued persistence over time of an asymmetrical firm-size distribution consisting predominantely of suboptimal scale firms, and the failure of capital intensity and scale economies to substantially deter the entry and start-up of new firms.     

The formation of public utility holding companies and their subsequent diversification activity

This paper examines the stock market reaction to announcements that utilities are converting to utility holding companies. There are negative abnormal returns associated with these announcements. Holding companies permit these utilities to diversify beyond the utility industry, and the announcements of their formation may signal the market of their intentions to diversify. The negative abnormal returns associated with these announcements and the negative abnormal returns associated with subsequent announcements of acquisitions are consistent with other research showing that diversifying bidders lose more (or gain less) than non-diversifying bidders.     

Who's in the Forbes Global 2000? The Role of Home Market,Multinational Firms and Economic Development

We investigate the determinants of the share of very large enterprises that a country has at the industry‐level at the industry‐level, using data from the Forbes Global 2000 across 48 countries and 16 industries in the period of 2004–2010. We find significant and positive evidence for three effects affecting such share: the home market effect (HME), multinational firm effect (MFE) and economic development effect (EDE). A further industry‐specific analysis of the HME suggests that the industry‐level degree of increasing returns to scale may only partly explain the effects being positive without them being different across industries.     

Constant returns to scale and competitive equilibrium under uncertainty

This paper considers the implications of the assumption of constant returns to scale in expected utility maximizing models of the competitive firm or industry in which markets for risk are absent. Under widely used assumptions about risk preferences it is shown that with constant returns to scale average profits are more than necessary to cover the implicit costs of risk-bearing. When the free entry of identical firms is possible this assumption about technology is shown to be incompatible with the assumption that entrepreneurs are risk averse.     

The East German wage structure after transition1

Abstract We extend the literature on transition economies’ wage structures by investigating the returns to tenure and experience. This study applies recent panel data and estimation approaches that control for hitherto neglected biases. We compare the life‐cycle structure of East and West German wages for fulltime employed men in the private sector. The patterns in the returns to seniority are similar for the two regional labour markets. The returns to experience lag behind in the East German labour market, even almost 20 years after unification, with significant differences particularly for high‐skill workers. The results are robust when only individuals who started their labour market career in the market economy are considered. We expect that the different returns are related to the heterogeneity of work experience gathered in East as compared with West Germany.     

Firm Size Distribution and Growth*

Abstract Empirical documentation of the sectoral distribution of firm size for a set of European countries reveals substantial differences. We study the relationship between productivity growth at the industry level and size structure. A positive and robust relation is found between average firm size and growth. We ask why size should matter for growth by considering the role of innovation to construct a test based on the differential effect of size on growth according to various indicators of R&D intensity. Our results indicate that larger size fosters productivity growth because it allows firms to take advantage of all the increasing returns associated with R&D. We argue that our test can be interpreted as a test of reverse causality, which lends support to the view that firm size has a causal impact on growth.     

Wage Returns to Experience and Tenure for Young Men in Italy

This paper provides estimates of wage returns to experience‐, firm‐, sector‐ and occupation‐specific tenure for a sample of young Italian male workers. By comparing returns obtained using different estimators, I evaluate the importance of endogeneity and selection problems generated by specific unobserved components and individual fixed effects. After controlling for the role of collective bargaining agreements and occupation categories, results indicate that general labour market experience is the fundamental source of wage growth for blue and white collars, while returns to firm tenure are insignificant. There is some evidence of positive returns to sector and occupational tenure for white collars. Estimates from different sectors suggest that union coverage can be relevant in offsetting the role of search and matching in wage determination.     

Impact of oil prices on firm stock return: industry-wise analysis

The study investigates the impact of oil prices on firm-level stock returns in case of Pakistan over the period 1998–2014, as this relationship is neglected by the previous literature. By using the panel data estimation, the results of full sample indicate significant positive effect of oil price changes on firm stock returns in the same period, whereas the lagged oil price changes have significant negative effect on firms’ stock return. Moreover, the industry-level analysis also confirms the similar findings; results indicate significant positive impact of oil price on firms’ stock return in full sample, textile, chemical and miscellaneous industry, while the lagged oil price changes negatively affect the stock returns of full sample and all the industries except tobacco, jute and vanaspati industries. The study confirms that rise in oil price transfers a positive signal in the stock market that boosts the firm-level stock returns in Pakistan. In contrast to the negative shocks, the stock returns are significantly affected by the positive oil price shocks.     

A case for water utilities as cooperatives and the UK experience

This article explores the creation of consumer cooperatives as a means of privatizing water utilities. The first section examines the structure of ownership and sets out Hansmann's theoretical basis for determining which category of persons is most efficiently assigned ownership. The section extends the discussion of market contracting costs by considering the externalities and social costs associated with a water utility. The heart of the paper is the second section which applies the theory of efficiently assigned ownership to the case of water utilities. The third section briefly reviews the literature on the relative efficiency of private and public utilities and also succinctly applies the theory of the firm to the question of vertical integration in the case of water utilities. The fourth section discusses the UK's experience with water utilities. The final section draws together the paper's conclusions.   The application of Hansmann's general theoretical scheme for assigning ownership leads to the conclusion that water utilities should be consumer cooperatives. Consumer-owned utilities would confront lower market contracting and ownership costs, than would investor-owned utilities. Additionally, the social costs and externalities that are particular to water are better left to consumers who are more prone to take them into account in their decisions.     

Determinants of the systematic risk of electric utilities: theory and estimation

Investors' perceptions of the risk of holding the common stocks of electric utilities are analysed on the assumption that risk depends on the covariance of shareholder returns with the market. The analysis explicitly relates risk to the sales and cost structures, growth, and regulatory environment of each electric utility. The model accounts for the effects of regulatory lag during periods of cost inflation. The model is estimated using a pooled cross-section, time-series sample of 95 electric utilities for the period 1965 to 1977. Estimates indicate that sales,cost structure and growth dominate investors' assessment of the systematic risk of individual firms. Surprisingly, differences in regulatory treatment experienced by firms have a relatively small effect on perceived systematic risk.     

The disappearing size effect

In this paper, we use average monthly returns and monthly cross-sectional regressions to investigate the relation between returns and firm size. During the period 1963–1981, we find an annualized return difference between small and large firms over 13% compared to a negative 2% return differential since 1982. Removal of the smallest firms (less than $5 million market value) eliminates any statistically significant size effect during the sample period using a regression framework. Several explanations are proposed for the disappearance of the size effect. Our results imply that size should not be considered as a systematic proxy for risk.     

中国汽车工业的市场规模和企业数量研究

本文根据Bresnahan&Reiss(1 991 )的文章所发展的模型和计量方法 ,对中国汽车工业的市场规模和企业数量进行回归分析。证实了在汽车产业中同样存在着市场规模和企业数量正相关关系 ,并且从实证的角度衡量了中国汽车工业规模小、企业数量多、投资分散的程度。我们的经济计量分析表明 ,在当今中国的汽车行业 ,企业实际数目与理论估算的合理企业数目相吻合 ,且单个企业的生产尚未严重受到“最低市场需求量”这一门槛水平的制约的省份 ,只剩下上海、天津和吉林三个省市。这从一定程度上揭示了 ,下一步中国汽车行业的重组、兼并与整合的任务有多么艰巨     

Product entry in a fast growing industry: the LAN switch market

We provide empirical evidence on market positioning by firms, in terms of market niche, distance from technological frontier and dispersion. We focus on the switch industry, a sub-market of the Local Area Network industry, in the nineties. Market positioning is a function of the type of firms (incumbents versus entrants), market size and contestability as well as firm competencies. We find that incumbents specialize in high-end segments and disperse their product in a larger spectrum of the market. Instead, entrants focus on specific market niches. Market size, market contestability and firm competencies are also important determinants of product location.