How many times can the electricity fee of shops be considered as the highest for residents?

The power supply company officially sells electricity to residents at 0.57 yuan/kWh, provided that the property rights of transformers belong to the power supply company, and residents will not bear the losses. \ r \ nThe property rights of transformers belong to companies or individuals such as residential property, and most of them are temporary transformers with little or no capacity increase fee. The power supply company only charges the watt-hour meter behind the transformer according to the quantity, and then the residents use the loss of the property to collect the electricity bill. In general, the electricity price is determined by the property. \ r \ That's the electricity charge for the granite factory dormitory. 0.66 yuan/kWh