Lakshmi Kameswari Gangaraju, Srinivas Sharma Gangaraju
Estimation of productivity is the measure of performance of plant which is invariably affected by labour, capital and other dependent resources (mostly psychological, social, economic, regional and environmental aspects). In India, the major electricity production is by coal and as per recent statistics report of Govt.of.India; the coal production has drastically increased due to high demand. Regression method is adopted to estimate the production function of coal mines and isoquant, isocost curves are drawn to understand the capital and cost involved in the production of coal. Total factor productivity is estimated using the CD production function approach.