Section 5(4)(i) in Tamil Nadu Electricity Grid Code, 2005
(i)Forecast the demand for power within the Area of Supply, based on the forecasts provided by distribution licensees, and provide to the Commission details of the demand forecasts, data, methodology and assumptions on which the forecasts are based. For demand forecasting, the methodology and procedure followed by the Electric Power Survey Committee constituted by CEA may be followed. These forecasts would be annually reviewed and updated. The primary responsibility of load forecasting within distribution licensee's Area of Supply rests with respective distribution licensees. The distribution licensees shall determine peak load and energy forecasts of their areas for each category of loads for each of the succeeding 5 years and submit the same annually by 31st March to STU along with details of the demand forecasts, data, methodology and assumptions on which the forecasts are based along with their proposals for transmission system augmentation. The demand forecasts shall be updated annually or whenever major changes are made in the existing forecasts or planning. While indicating requirements of single consumers with large demands (1 MW or higher) the distribution licensee shall satisfy himself as to the degree of certainty of the demand materializing.