Measuring the efficiency of the turkish electric distribution sector using stochastic frontier analysis

Download
index.pdf
2011
Çelen, Aydın
Show full item record
280
views
177
downloads
This study analyzes the technical efficiencies of Turkish electricity distribution companies (21 in total) throughout 2002 and 2009. For this aim, we used six different model specifications, all of which are generated from two different Stochastic Frontier Analysis (SFA) models (Battese ve Coelli (1992&1995)). At the end of the estimations of the models, it has been seen that the signs and significance levels of the coefficient estimations are very consistent and satisfactory in all models. We also observed consistency between the coefficient estimations of the different models despite the differences in the magnitudes of the coefficient estimations. For example, all model specifications confirm the presence of increasing returns to scale and of a mild technological progress over time in the market. In addition, among the inputs, all inputs except the quality of the electricity delivered are important in enhancing technical efficiency of the electricity distribution companies, according to the all alternative specifications. Again, all models showed that inefficiency effects rather than random error effects are of crucial importance in Turkish electricity distribution market. As for the efficiency estimations of the alternative models, the main conclusion revealed by our study is that efficiency estimations of the Battese ve Coelli (1995) models are remarkably higher than those of the Battese ve Coelli (1992) models. The efficiency estimation differences between Battese and Coelli (1992&1995) models can be attributed to the environmental variables included into the Battese ve Coelli (1995) models, which are not generally controlled by electricity distribution companies.
Electric utilities, Electric power
http://etd.lib.metu.edu.tr/upload/12613004/index.pdf
https://hdl.handle.net/11511/20382
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Statistical modeling of hourly electricity load series in Turkey
Özpala, Pınar; Gaygısız Lajunen, Esma; Department of Economics (2013)
This study investigates Heterogeneous Double Seasonal ARIMA model, Heterogeneous Periodic AR model and a nonlinear model of Multiple Regime Logistic STAR model by application of hourly electricity load data between years 2006-2007 in Turkey. Forecast results suggest that Heterogeneous Double Seasonal ARIMA model is the best among three methods forecasting up to one day.
Short term electricity price forecasting in Turkish electricity market
Özgüner, Erdem; Güven, Ali Nezih; Tör, O. Bülent; Department of Electrical and Electronics Engineering (2012)
With the aim for higher economical efficiency, considerable and radical changes have occurred in the worldwide electricity sector since the beginning of 1980s. By that time, the electricity sector has been controlled by the state-owned vertically integrated monopolies which manage and control all generation, transmission, distribution and retail activities and the consumers buy electricity with a price set by these monopolies in that system. After the liberalization and restructuring of the electricity powe...
Prediction of hot-spot and top-oil temperatures of power transformers according to IEEE standards C57.110-1998 and C57.91-1995
Karaca, Haldun; Ermiş, Muammer; Department of Electrical and Electronics Engineering (2007)
In this thesis, the effects of Harmonics on the Top Oil and Hot Spot Temperatures of Power Transformers used in Turkish Electricity Transmission System have been investigated. Due to the solid state equipment, the harmonic levels increase. This effect raises the losses and temperatures in the transformer windings. None of the power transformers currently used in Turkey has measuring equipment suitable for measuring the Hot-Spot temperatures. In this study, a computer program is written in LABVIEW which meas...
Modeling electricity demand in Turkey for 1998-2011
Sayın, İpek; Gaygısız Lajunen, Esma; Department of Economics (2013)
This thesis estimates the quarterly electricity demand of Turkey. First of all proper seasonal time series model are found for the variables: electricity demand, temperature, gross domestic product and electricity price. After the right seasonal time series model are found Hylleberg, Engle, Granger and Yoo (1990) test is applied to each variable. The results of the test show that seasonal unit roots exist for the electricity price even it cannot be seen at the graph. The other variables have no seasonal uni...
The liberalization of the Turkish electricity sector: a simulation analysis
Bahçe, Serdal; Taymaz, Erol; Department of Economics (2003)
The Turkish Electricity System has gone through a liberalization process. This study aims to analyze the possible outcomes of this process by using a simulation framework. First, we look at the basics of new market design and focus on international evidence. Second, the theoretical and empirical literature about the liberalization of the electricity sector is reviewed. Then, the structure of our model, Turkish Electricity System Simulation Model (TESS), is summarized. In this model, it is assumed that a spo...
Citation Formats
A. Çelen, “Measuring the efficiency of the turkish electric distribution sector using stochastic frontier analysis,” M.S. - Master of Science, Middle East Technical University, 2011.
METU IIS - Integrated Information Service open@metu.edu.tr