You have to calculate the load in the facade first, and then consider whether to increase the capacity to a three-phase four-wire meter, a transformer meter or a transformer. If the capacity of the application is too large and the cost is relatively high, the power supply company will calculate your line loss, which is also a big expense. At present, there are 8,800 W, 26,400 W, 26400-66000 W in Hefei, and the larger ones will be equipped with transformers. The standard here in Hefei is 8,800 W 500 yuan and 26,400 W 2,000 Yuan, depending on the site conditions.