What does it mean that State Grid Power informs you that you have successfully purchased electricity?

Buyers use electricity. State Grid Power informed that the successful purchase of electricity is to go to the power supply department to buy electricity users. State Grid Corporation was established on February 29th, 2002. It is a wholly state-owned company directly managed by the central government, and a large-scale key state-owned enterprise that is related to the lifeline of the national economy and national energy security.