In exercise of the powers conferred by section 42 of the Electricity Act, 2003 (Act 36 of 2003) and all other powers enabling it in this behalf, the Tamil Nadu Electricity Regulatory Commission (TNERC) after having considered the written objections, consulted the members of the State Advisory Committee, heard the issues raised by the stakeholders in a public hearing, the reply of the Tamil Nadu Electricity Board, the applicant herein, and having considered the relevant documents available on record, passes this order, fixing the transmission charges, wheeling charges and other charges specified under the aforesaid Open Access Regulations and payable by an open access customer. Sd....... Sd..... Sd..... B.Jeyaraman S.Thangarathnam A.Balraj Member Member Chairman 5. The learned counsel for the petitioner relied on the preamble of the said order, which states that the Regulatory Commission considered the written objections, consulted the members of the State Advisory Committee, heard the issues raised by the stakeholders by way of public hearing and the reply from the Tamil Nadu Electricity Board and considered all the issues. Pursuant to the said order dated 15.05.2006 the applicability of Deemed Demand Charges has been stipulated and in respect of Deemed Demand Charges it is stated that the transmission losses in each voltage play a vital role in deciding the deemed demand. The loss levels at each voltage are given above. The loss factor depends on the voltage at which the power is injected and the voltage at which the open access user draws. Since various combinations are possible, a simple methodology is adopted to approximate the loss factor under various scenarios. Even though the power, in an interconnected grid, flows by displacement and does not actually traverse the whole distance from point of injection to the point of travel, the accepted principle, in general is, that the loss estimation shall be based on the theoretical route of flow. For example, even though the generated power is injected by a generator at 11 K V and is also drawn at the same voltage of 11 KV at a distant place, the power is supposed to have been transformed through the higher voltages of 33, 110,230 KV etc., again transformed into the lower levels and reach the point of drawal. To emulate such scenarios it is assumed that the said power, flows in an upward and downward direction as indicated below, through various transformation levels and undergoes 50% of the loss, in each direction, in that level. The percentage of deemed demand supplied by the licensee
