Headline causal estimate is the same-year IV elasticity that instruments the differenced log average price with the out-of-region same-group price to purge within-region reverse causality; abstract/conclusion state the same-year elasticity is -0.15 to -0.2. || 'We obtain an estimate of the same-year price elasticity of electricity demand of -0.16, significantly different from zero at the 1% level. Our instrument performs well in the first stage' (p.418, Table 4 col 8); 'a same-year elasticity of demand of -0.15 to -0.2 and a four-year elasticity of around -0.4' (abstract/p.410-411).
Burke, P. J., & Kurniawati, S. (2018): "Electricity subsidy reform in Indonesia: Demand-side effects on electricity use." Energy Policy, 116, 410-421.