Authors' headline is SR approx -0.3 and LR in excess of -1.0, from the gradual-adjustment IV models; fullest specification is Table 2 col (10). || 'Using first difference and gradual adjustment models, we find short-run elasticities of -0.3 and long-run elasticities in excess of negative unity.' (Abstract, p.1)
Volland, B. & I. Tilov (2018): "Price elasticities of electricity demand in Switzerland: Results from a household panel." IRENE Working paper 03/2018, University of Neuchatel, Institute of Economic Research, Switzerland: Neuchatel.