Australia Test 22
5 min40 WPM required280 words
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The Australian Energy Market Operator is the body responsible for operating the electricity and gas markets across most of Australia and for administering the power system and gas supply hubs in the National Electricity Market and the gas markets it oversees. AEMO's electricity market operations involve dispatching generation and storage resources every five minutes to meet demand at least cost while maintaining the technical parameters of voltage and frequency that ensure the power system operates safely and reliably within the physical constraints of the transmission network. The National Electricity Market encompasses Queensland, New South Wales, the Australian Capital Territory, Victoria, South Australia, and Tasmania, with Western Australia and the Northern Territory operating separate electricity systems outside the NEM framework. Market administration involves calculating and publishing five-minute settlement prices that reflect the cost of the marginal unit of generation dispatched to meet demand at each point in time, settling financial transactions between market participants, and enforcing compliance with the rules under the National Electricity Law and National Electricity Rules that govern participant behaviour. Power system planning is a critical long-term function, with AEMO publishing the Integrated System Plan that models the future development of the electricity system over a twenty-year horizon, identifying the transmission network investments and new generation and storage capacity needed to support the transition to a high renewable energy system while maintaining reliability and affordability. Gas market operations involve managing the short-term trading markets and pipeline systems that facilitate the physical delivery of natural gas to industrial, commercial, and residential users across the gas distribution networks, with gas supply adequacy assessment informing both market participants and government about risks to supply security during periods of tight supply conditions.