Its odd that the US has yet to move to time-metered electricity sales, given that coal/nuclear is cheap and ng is increasingly expensive. If people are hit with higher prices at peak demand they will delay the use of many things to periods when cost is lower, including pool pumps, laundry, and others. In the California electricity shortage there was never even a request for California pool owners to use their pumps at night rather than during the day, which is when shortages were severe enough to cause blackouts.