چکیده:
This paper is concerned with the estimation of total factor
productivity (TFP) growth for the Iranian electric utilities
during the period 1980-1993 on the basis of panel data. A
translog cost function is used which accommodates firm -
specific variability through a one - way error component
model. The results show that the Iranian electricity supply
industry experienced increasing returns to scale (IRS) during
the period 1980-93, a high rate of technical change and total
factor productivity growth during this period. Factor bias of
technical change shows (hat the electricity supply industry has
been labor and fuel saving
خلاصه ماشینی:
Productivity Performance of The Iranian Electric Power Industry By: Alimorad Sharifi and Lennart Hjalmarsson 1 ABSTRACT This paper is concerned with the estimation of total factor productivity (TFP) growth for the Iranian electric utilities during the period 1980-1993 on the basis of panel data.
The results show that the Iranian electricity supply industry experienced increasing returns to scale (IRS) during the period 1980-93, a high rate of technical change and total factor productivity growth during this period.
The measurements of total factor productivity (TFP} growth and technical change in the electricity supply industry - as one of the major components of the energy sector - has attracted of many empirical researchers.
This paper analyzes the cost structure and total factor productivity growth of the Iranian electricity supply industry during the period 1980-93, applying a parametric approach and using econometric estimation of a translog cost function associated with input cost shares equations.
The paper is organized as follows: The next section describes the industry structure, the third section explains the econometric model, including technical change, economies of scale, and TFP growth.
Moreover, the level of electricity production in all of the firms have increased steadily, and their actual (deflated) average costs have been generally diminishing except most recently Economies of scale is indicated in Figure 5.
Among the firms (Table 6), Sistan & Baluchestan had the highest rate of productivity growth (22,1 % ), with a sharp reduction in average cost after 1984, although energy supply increased.