Pay in the handheld power application. Residents of Datong City, Shanxi Province can pay the cost of changing coal to electricity on the handheld power app. Developed by State Grid Co., Ltd., it opens business functions to customers of 27 provincial power companies in the system and realizes online operation of the whole network. The "Online State Grid" platform has achieved a unified service portal, integrating the business portals originally scattered in multiple online channels such as Pocket Power, 95598 website, State Grid Mall, E-treasure, E-charge and photovoltaic cloud network, focusing on customer pain points and innovating service products.