The Australian Energy Market Commission today published version 98 of the National Electricity Rules, which incorporates Schedule 8 of National Electricity Amendment (Managing the rate of change of power system frequency) Rule 2017 No. 9, Schedule 10 of National Electricity Amendment (Managing power system fault levels) Rule 2017 No. 10 and Schedule 5 of National Electricity Amendment (Generating System Model Guidelines) Rule 2017 No. 11.