Introduction to Deregulation in Power Industry - nptel
Introduction to Deregulation in Power Industry - nptel
Introduction to Deregulation in Power Industry - nptel
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3. Regula<strong>to</strong>ry oversight: The utility’s bus<strong>in</strong>ess and operat<strong>in</strong>g practices<br />
must confirm <strong>to</strong> guidel<strong>in</strong>es and rules set down by government<br />
regula<strong>to</strong>rs.<br />
4. Least-cost operation: The utility must operate <strong>in</strong> a manner that<br />
m<strong>in</strong>imizes its overall revenue requirements.<br />
5. Regulated rates: The utility’s rates are set <strong>in</strong> accordance with<br />
government regula<strong>to</strong>ry rules and guidel<strong>in</strong>es.<br />
6. Assumed rate of return: The utility is assured a fair return on its<br />
<strong>in</strong>vestment, if it confirms <strong>to</strong> the regula<strong>to</strong>ry guidel<strong>in</strong>es and practices.<br />
3.3 Structure of regulated <strong>in</strong>dustry<br />
The electric power <strong>in</strong>dustry has over the years been dom<strong>in</strong>ated by large<br />
utilities that had an overall authority over all activities <strong>in</strong> generation,<br />
transmission and distribution of power with<strong>in</strong> its doma<strong>in</strong> of operation. Such<br />
utilities have often been referred <strong>to</strong> as vertically <strong>in</strong>tegrated utilities. Such<br />
utilities served as the only electricity provider <strong>in</strong> the region and were obliged<br />
<strong>to</strong> provide electricity <strong>to</strong> everyone <strong>in</strong> the region.<br />
A typical structure of a vertically <strong>in</strong>tegrated electric utility is shown <strong>in</strong><br />
figure (1).<br />
Generation<br />
Energy<br />
Flow<br />
One Company<br />
T & D Cus<strong>to</strong>mer<br />
Figure 1<br />
Money<br />
Flow<br />
In figure (1), the money flow is unidirectional, i.e. from the consumer <strong>to</strong><br />
the electric company. Similarly, the <strong>in</strong>formation flow exists only between the<br />
genera<strong>to</strong>rs and the transmission systems.<br />
The utilities be<strong>in</strong>g vertically <strong>in</strong>tegrated, it was often difficult <strong>to</strong> segregate<br />
the costs <strong>in</strong>volved <strong>in</strong> generation, transmission or distribution. So, the utilities<br />
often charged their cus<strong>to</strong>mers an average tariff rate depend<strong>in</strong>g on their<br />
aggregated cost dur<strong>in</strong>g a period.<br />
3