Case II (sector-by-sector 2SLS) carried into the demand-growth analysis || "The estimated own-price elasticity is close to unity (-1.02) in the residential sector and below unity, i.e., -0.71 and -0.86 in the commercial and industrial sectors respectively. These figures are shown as Case II" (p.732)
Badri, M. A. (1992): “Analysis of Demand for Electricity in the United States.” Energy 17(7), 725-733