Paper reports exactly one OLS demand equation per industrial subsector (Table 1, "results of best fitness"); no competing specifications exist, so each coded subsector price elasticity is trivially the authors' estimate, and the conclusions present the Table 1 price coefficients collectively as the paper's finding of weak price sensitivity. || "The estimation results of this model indicates the weak sensitivity of industrial energy consumption to price changes although industrial energy demand is considerably affected by the level of economic activity and number of users(or factories)." (p. 403, printed page)
Ghaderi, S. F., Azadeh, M. A., & Mohammadzadeh, S. (2006): 'Electricity demand function for the industries of Iran.' Information Technology Journal, 5(3), 401-404.