As I recall you can’t setup an account until you occupy the property.

That’s for good reason. You don’t want a future tenant in control of your power since an account holder can request things like service shutdown for maintenance. They don’t have the time/resources to be sorting out disputes so they just don’t setup people in advance. There’s no need.

When you move in you have a window to setup the account. You’ll then inherit the meter and start paying from that point forward.