The -0.2161 (se 0.0597) own-price coefficient of the linear ARX model Eq. (8) is the paper's only conventional short-run price elasticity and the number its demand discussion revolves around (the preferred nonlinear STR model adds a regime-dependent price response of -1.1426, not coded); authors note Eq. (8) is likely downward-biased due to rising block tariffs. || "The estimated ARX model overall has coefficients with the expected signs: contemporaneous growth rates in income and price of kerosene have a significant positive impact on the growth rate of electricity consumption, while rate of growth in own price and four-quarters-lagged electricity consumption have a statistically significant negative impact on current consumption." (p. 521, printed)
Gabreyohannes, E. (2010): 'A nonlinear approach to modelling the residential electricity consumption in Ethiopia.' Energy Economics, 32, 515-523.