The Contestable Markets Theory - Efficient Advice for Economic Policy
Christian Growitsch, Thomas Wein
External Publications,
2004
Abstract
During the nineties of the last century several formerly monopolistic markets (telecommunication, electricity, gas, and railway) have been deregulated in Germany based on European directives and theoretically inspired by the theory of contestable markets. The original contestable market theory implied three assumptions necessary to be satisfied to establish potential competition: Free market entry, market exit possible without any costs, and the price adjustment lag exceeding the entry lag. Our analysis shows that if the incumbent reduces its prices slowly (high adjustment lag) and the market entry can be performed quickly (low entry lag), a new competitor will be able to earn back sunk costs. Therefore it is not necessary that all three conditions be complied with for potential competition to exist. Applying this „revised“ contestable market theory to the deregulated sectors in Germany, natural monopolies can be identified in telecommunication sections local loops and local/regional connection networks, in the national electricity grid and the regional/local electricity distribution networks, in the national and regional/local gas transmission/distribution sections, and in the railroad network. These sections are not contestable due to sunk costs, expected high entry lags and a probably short price adjustment lag. They are identified as bottlenecks, which should be regulated. The function of system operators in energy and railroad are closely related to the non-contestable monopolistic networks.
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The influence of Vertical Integration and Property Rights on Network Access Charges in the German Electricity Markets
Christian Growitsch, Thomas Wein
External Publications,
No. 6,
2004
Abstract
German Electricity markets were deregulated in the late nineties of the last century. In contrast to other European countries, the German government enacted negotiated third party access instead of installing a regulation authority. Network access charges for new competitors are based on contractual arrangements between energy producers and industrial consumers, which specify the calculation schemes for access charges. Local and regional suppliers are nevertheless able to set (monopolistic) charges at their own discretion, restricted only by the possibility of interference competition authorities. While some of those suppliers have been acquired by one of the four Transmission System Operators and become vertically integrated, the majority is still independent public utility companies. In this paper we analyse if there is evidence for different charging behaviour depending on the supplier’s economic independence or its level of vertical integration. Controlling for other coefficients as the so called structural features and related cost differences as well as the influence of competition law suits, multivariate estimations show significantly lower access charges than vertically separated suppliers, whereas incorporated network operators charge significantly higher charges compared to independent suppliers for at least one typical case.
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Deregulation and liberalization in European electricity industry
Constanze Kreis
Schriften des IWH,
No. 17,
2004
Abstract
Seit Ende der 80er Jahre ist weltweit eine zunehmende Liberalisierung und Deregulierung von Wirtschaftsbereichen zu verzeichnen, in denen der Ausschluss von Wettbewerb durch das Vorherrschen von Monopolstrukturen und deren Regulierung kennzeichnend war. Im Zuge dieser Entwicklung wurde mit der Verabschiedung der EU-Richtlinie zur Schaffung eines Binnenmarktes für Elektrizität im Jahre 1996 auch in Europa ein neuer energiepolitischer Ordnungsrahmen geschaffen, nachdem hier zunächst kontroverse Debatten für eine zögerliche Herangehensweise an Strukturreformen auf diesem Gebiet geführt haben. Die Umsetzung der Richtlinie hat seither, wenn auch in unterschiedlichem Maße, in den nationalen Strommärkten zu tiefgreifenden strukturellen Umbrüchen geführt. Die Reorganisation dieses Wirtschaftszweigs ist aber im europäischen Maßstab bisher keineswegs abgeschlossen und der transnationale Handel mit Strom noch eingeschränkt. Die vorliegende Arbeit wendet sich angesichts der dynamischen Situation auf diesem noch jungen Wettbewerbsmarkt einer Reihe interessanter wissenschaftlicher Fragestellungen zu, die sich aus dem Prozess der Deregulierung und Liberalisierung der Stromwirtschaft ergeben. Wegen der Besonderheiten des Gutes „Elektrizität“ sind die Erkenntnisse, die über Marktvorgänge in anderen Wirtschaftsbereichen gewonnen wurden, nicht uneingeschränkt auf die Elektrizitätswirtschaft zu übertragen. Die Thematik weist damit eine große Heterogenität und Komplexität auf. Die Autorin trägt diesem Umstand Rechnung, indem sie mehrere Kapitel aus jeweils unterschiedlicher Perspektive mit verschiedenen Methoden den Deregulierungsprozess analysiert. Im Ergebnis lässt sich festhalten, dass der Bereich der Elektrizitätswirtschaft ein Sektor bleiben wird, der nicht nur während seiner Umbruchphase, sondern grundsätzlich auch weiterhin besonderer wettbewerbspolitischer Aufmerksamkeit bedarf, da trotz bereits zu verzeichnender Effizienzgewinne nicht davon ausgegangen werden kann, dass im Zuge der Deregulierung und Liberalisierung eine erhöhte Effizienz allein durch Regulierungsabbau erzielt wird.
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Panel Seasonal Unit Root Test With An Application for Unemployment Data
Christian Dreger, Hans-Eggert Reimers
IWH Discussion Papers,
No. 191,
2004
Abstract
In this paper the seasonal unit root test of Hylleberg et al. (1990) is generalized to cover a heterogenous panel. The procedure follows the work of Im, Pesaran and Shin (2002). Test statistics are proposed and critical values are obtained by simulations. Moreover, the properties of the tests are analyzed for di®erent deterministic and dynamic specications. Evidence is presented that for a small time dimension the power is slow even for increasing cross section dimension. Therefore, it seems necessary to have a higher time dimension than cross section dimension. The new test is applied for unemployment behaviour in
industrialized countries. In some cases seasonal unit roots are detected. However, the null hypotheses of panel seasonal unit roots are rejected. The null hypothesis of a unit root at the zero frequency is not rejected, thereby supporting the presence of hysteresis effects.
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Enterprise-related services in East-Germany – an investigation of the service sector statistics
Siegfried Beer
Wirtschaft im Wandel,
No. 12,
2003
Abstract
According to the national accounts in East Germany, the enterprise-related services have developed substantielly since 1990. This is expressed by the average annual increase of real gross value added of 9.5% (GDP: 4.9%) until 2000. According to the newly introduced service sector statistics (for 2000), firms in the East German enterprise related services have on average 9 employes, and thus, they are only slightly smaller than enterprises in West-Germany. Much bigger differences appear with respect to the average sales and productivity (60% or 45%). Various explanations exist. One major reason obviously is, that enterprises in East-Germany make smaller sales because of the clearly smaller size of enterprises which demand these services. Furthermore the smaller earning power of services demanding enterprises, differences in the branch structur of enterprise related services, and administrative regulations for prices play a role.
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Innovative East German industrial companies do well in comparison with others - An empirical analysis based on the IAB company panel
Bärbel Laschke
Wirtschaft im Wandel,
No. 9,
2003
Abstract
In the period of 1999/2000 the proportion of product renewals in the East German manufacturing was above the West German level. The proportion of industries with innovation activities follows the industrial structure. Most product innovations take place in the proportionately largest branches of industry, such as the consumer goods and food industries. However, the high proportion of innovative enterprises in research-intensive industries (chemistry, electrical engineering, car manufacture) is a sign of a structural change. On the basis of the data it is also shown that innovative enterprises positively stand out from non-innovative ones in their performance parameters and, with their investment and employment trends they also rank among the expanding enterprises.
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East German exports still show high dynamics in first half of 2001
Ingrid Haschke
Wirtschaft im Wandel,
No. 16,
2001
Abstract
Since last year, growth has weakened sharply in most regions of the world, accompanied by a marked decline in world trade growth. There was a significant impact on demand and activity in the industrial countries. In contrast to that the data indicate increasing east German exports of goods. In the first half of 2001 the exports of the new states rose sharply by around 25% compared with the period of the previous year and the share of exports in GDP rose.
The export structure by regions has changed over time. At the beginning of the nineties the main customers of east German exports were still central and eastern Europe. Now almost half of the goods are delivered to EU-countries. Cars and electrical engineering products are the main export goods with a share of around 30%.
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Structural change, specialization patterns, and the productivity gap between Central and Eastern Europe and the European Union
Johannes Stephan
Wirtschaft im Wandel,
No. 13,
2000
Abstract
The transition countries of Central East Europe exhibit significantly lower productivity levels than that of the average of the 15 European Union countries. Since the outset of transition, however, this gap has clearly narrowed.
Next to technological and organisational factors it is sectoral structures which play an important role for the development and level of national productivities: in most transition economies, structural change clearly contributed positively to productivity growth. Poland is an exception here, no significant effect of structural change between sectors and industrial branches on the growth of the national productivity level could be found. The low intensity of structural adjustment in Poland in particular in the agricultural sector corresponds with a decisive role played by the sectoral pattern of specialisation within the European division of labour as determinant of the productivity gap. Hungary and to some degree also Slovenia, the country with the lowest productivity gap, exhibit similar results. Only in the cases of the Czech Republic and Slovakia remain negligible the explanatory powers of respective patterns of specialisation as productivity determinants.
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Industry sketch: East German electrical industry
Siegfried Beer
Wirtschaft im Wandel,
No. 3,
2000
Abstract
Die elektronische Industrie gehört zu den Industriebranchen in Ostdeutschland mit dem stärksten Produktionswachstum. Dazu haben die verbesserte Wettbewerbsfähigkeit der Unternehmen, die Ansiedlung großer Konzerne und die kräftig gestiegene Nachfrage nach elektronischen Bauelementen und Erzeugnissen der Informations- und Kommunikationstechnik beigetragen. Rund 40 % des Umsatzzuwachses von 1995 bis 1998 wurden aus Exporten erlöst.
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Renewable energy sources in the electricity supply industry: General energy industry settings and promotion policy by the state
Steffen Hentrich
Forschungsreihe,
No. 4,
1999
Abstract
Im Zusammenhang mit der wettbewerblichen Öffnung des europäischen Elektrizitätsmarktes ist die Zukunft der Förderung erneuerbarer Energieträger erneut auf die energiepolitische Agenda gelangt. Einerseits wird von der Nutzung erneuerbarer Energieträger ein wichtiger Beitrag zur Verminderung der energiebedingten Treibhausgasemissionen und zur Absicherung der zukünftigen Energieversorgung erwartet. Daher hat ein großer Teil der EU-Mitgliedsländer bereits frühzeitig nationale Programme zur Förderung erneuerbarer Energien aufgelegt. Auch in Deutschland unternehmen Bund und Länder mit vergleichsweise großem Erfolg verschiedene Fördermaßnahmen zur Überwindung der bestehenden Marktbarrieren.
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