Industry jargon
Agreed export capacity
Also called AEC · agreed capacity for export
Agreed export capacity is the level of electrical export permitted at a customer's connection to the distribution network.
It matters where a site can send power back through the connection from generation, battery storage or bidirectional EV charging. The exact contractual terminology can vary by network operator.
The practical engineering requirement is to keep export within the limit agreed for the connection. A G100 export-limitation scheme can be used where the DNO agrees that export must be controlled rather than allowing the connected equipment's unconstrained maximum.
Read more G100 compliance for EV charging