Among the coded peak-energy-price elasticities, the author's headline finding is that the energy charge significantly reduces only coincident demand (KWSP 1900h = -1.44*, the sole starred/significant PE elasticity) || 'the only significant effect of the peak energy price was a reduction in coincident demand' (p.535); 'the peak energy charge caused a significant reduction in coincident demand only' (p.538)
Schwarz, P. (1984): “The Estimated Effects on Industry of Time-of-Day Demand and Energy Electricity Prices.” The Journal of Industrial Economics 32(4), 523-539