Headline firm-level own-price elasticity is the all-firm fixed-effects estimate -0.574 (abstract rounds to -0.57; conclusion says ~-0.6) || 'the price elasticity of demand for electricity across all firms is approximately -0.57' (abstract, p.75); 'the price elasticity of electricity demand across the sample of firms is -0.57' (p.92)
Chaudhry, A.A. (2010): "A Panel Data Analysis of Electricity Demand in Pakistan." The Lahore Journal of Economics, 15, 75–106.