Author frames Eq (12) (appliance-ownership specification) as the more accurate description of electricity demand, but both electricity price coefficients are reported side-by-side as the headline price results; no single price elasticity is singled out as THE preferred value, so both electricity own-price obs are marked preferred || 'In both regression cases, price movements exhibit a negative effect on electricity energy consumption, as expected... is more accurately described by Equation (12).' (p.276)
Hughes-Cromwick, E. L. (1985): “Nairobi Households and Their Energy Use: Economic Analysis of Consumption Patterns.” Energy Economics 7(4), 265-278