Load Forecasting on the TVA System Par I-Substation Loads

Efficient planning and design of the transmission system depends upon reasonably accurate forecastss of the loads it will serve. Substation load forecasts are prepared by the Tennessee Valley Authority (TVA) 15 years in advance. For the first 5 years, preliminary forecasts are prepared by months using time series analysis, carefully collected information, and judgment. Loads for another 10 years are extended largely on the basis of judgment. These preliminary forecasts are subjected to three critical reviews resulting in necessary modifications. The sum of adjacent substation loads is compared with larger area forecasts.