What is MEC?

Maximum export capacity (MEC) is the capacity value in units of kW, representing the maximum generation capacity of the installed microgeneration equipment, as declared via ESBN’s NC6 (or equivalent) form. 

We receive a notification of your MEC from ESB Networks when your installation has been approved. This date will be the effective date of your MEC. If your MEC is incorrect, or you've a question about your MEC, please contact ESB Networks directly.