means those services necessary to support the continuous and secure operation of an electric power system and necessary to maintain reliable operations of the national transmission power system and interconnected distribution power systems, including, but not limited to, those services necessary for voltage and reactive power control, automatic generation control, frequency control and black start capabilities;
[Definition inserted by section 1(a) of the Electricity Regulation Amendment Act, 2024, Notice No. 5139, GG51100, dated 20 August 2024 - effective 1 January 2025 per Proclamation Notice 236 of 18 December 2024 with exceptions]