Headline final-state Kalman filter price elasticity under the rising-price regime is the paper's central quantitative result || "In its final state, price elasticity is estimated as Ep = 0.288 at a 5% confidence level" (p.6, Table 6); abstract: "when real prices started increasing, the price elasticity coefficient increased markedly in absolute terms" (p.1)
Masike, K., & Vermeulen, C. (2022): "The time-varying elasticity of South African electricity demand." Energy, 238, 121984.