grid and the purchase of electricity at an approved rate has been exchanged between satba and khairin madrasaz to build these small power plants on the roofs of schools . during a period of twenty years, the current expenses and the school can also be restored by the restorer of our classroom last year . solar power plants now what are the things that are installed in the schools that we buy at a reasonable price? at the moment, the kilowatt is approximately 2,200 tomans in the support system, and the power plants cost 1,750 tomans per kilowatt-hour to 23 tomans for two months , which is approximately 11 tomans. it was reported on a monthly basis that this school removed the same production from the site. the renewable energy organization announced that it planned to install another 80,000 5 kw solar panels by the end of the year. thinking was made that he realized that his money was being stolen. he used this device for his records. over time, this device became a smart cash register with changes and was sold in stores all over the world . in iran, since the beginning of the 80s, this device