if .2 % of the population observes EARTH hour it will take the energy equivelant of 14 hours to shut down and restart distibution stations, feeder plants, recharge transformer stations, system personel will have to work over time to monitor the fluctuations in the system at off hour times,hence overtime for those workers and extra gas to come in for work, extra hot water for the shower to wash off the disgust! and some alarming nights lack of sleep while they ponder how making all this extra work saved anything!