In some states only utilities can charge per kWh. Others must charge by the minute. In those states Tesla charges one per minute rate if the charge rate is over 60kW and 50% of that if it is under 60kW.EA isn't designed for cars charging at 80kW. It's designed for cars charging at 150, 320kw. It charges by the minute so becomes much more affordable that faster the car can charge. They're building the network for tomorrow, not today.
In other states like California the provider has the choice of charging either per kWh or per minute. At least thus far EA has chosen to charge per minute everywhere, and the same rate regardless of whether you are connected to a 150kW feed or a 350kW feed. I expect that to change once there are more EA stations live and more EVs using them.