Authors' headline price elasticity is the fully-instrumented (price+income IV) estimate 'about minus 0.2'; abstract states price elasticity -0.2. The last set of columns (price and income IVs) is their preferred specification, but those two columns (-0.18097/-0.16593) were NOT coded. Of the coded cells the closest to the headline are the price-IV columns (obs 3382/3383, ~-0.2). I mark the price-IV FE/RE as preferred among coded cells. || 'Estimated elasticities with respect to income and price are 0.8 and minus 0.2 respectively' (abstract, p.877); 'The values for price elasticity (about minus 0.2) ... for residential electricity demand are quite close to values based on detailed micro level data for China' (p.892)
Eskeland, G. S., & Mideksa, T. K. (2010): "Electricity demand in a changing climate." Mitigation and Adaptation Strategies for Global Change, 15(8), 877–897.