Abstract/conclusion report short-term elasticities -0.19 (Tokyo) to -0.70 (Hokkaido) as the headline range; RMSE text says price1 and price2 models both perform well, so the author does not single out one price definition. No single point estimate is elevated over the others; all 18 short-run own-price cells are the headline results. || 'Short-term price elasticities vary from -0.19 (Tokyo) to -0.70 (Hokkaido)' (p.199, Conclusion)
Tanishita, M. (2019): "Price Elasticity of Residential Electricity Demand by Region in Japan: Have They Changed Since the Great East Japan Earthquake?" Journal of Japan Society of Energy and Resources, 40(5), 196-201.