Author explicitly names LSDV as the preferred estimator; the SR own-price elasticity -0.143 is the headline LSDV estimate || 'Even though LSDV estimation is chosen as the preferred method, the value of the test statistic is very close to the critical value (5.99).' (p.596); 'The LSDV estimate of the short-run price elasticity is -0.143 while the long-run price elasticity is -0.464.' (p.597)
Shin, J.-S. (1985): “Perception of Price When Price Information Is Costly: Evidence from Residential Electricity Demand.” Review of Economics and Statistics 67(4), 591-598