iran sharq cooler, the cooler is turned off, we are using a fan, sultan, i used to use a fan.ctrical appliances they choose when buying are low-consumption electrical appliances , and the consumption pattern for this group of subscribers of the kilowatt-hour system has been determined. now we have to answer this question. asked how to save bonus for it is calculated that the past consumption was 70 kilowatt hours, this year he used an average of 140 kilowatt hours, ten kilowatt hours is up to 150 kilowatt hours for 2 thousand tomans and twenty kilowatt hours is 70 kilowatt hours for 1500 tomans. some of the household electricity subscribers live in tropical areas, and the consumption pattern for them is defined as 3000 kilowatt hours, but how is the saving bonus calculated if, for example, the subscriber consumed 3700 kilowatt hours last year, this year in 2019 and again 200 kilowatt hours with the same rate of two thousand there is a toman and a bench factor in the electricity tariffs. it is calculated starting from a thousand tomans . the next step is 1500 in normal areas .