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Ancillary Services Market at Watt-Ex

Ancillary Services Market at Watt-Ex. WHAT ARE ANCILLARY SERVICES?. Maintain stability of electricity grid Dispatched by the System Controller (AESO) to balance changes in supply and demand Supplied by facilities that meet technical specifications set out by the System Controller

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Ancillary Services Market at Watt-Ex

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  1. Ancillary Services Marketat Watt-Ex

  2. WHAT ARE ANCILLARY SERVICES? • Maintain stability of electricity grid • Dispatched by the System Controller (AESO) to balance changes in supply and demand • Supplied by facilities that meet technical specifications set out by the System Controller • Regulating Reserves • Spinning Reserves • Supplemental Reserves

  3. Active Standby Regulating Spinning Supplemental Day -1 Day -2 Day -3 Day -4 Day -5 Base Load Off Peak On Peak ANCILLARY SERVICES CONTRACTS Market: Commodity: Instrument:

  4. dispatch & directives AESO System Controller response compliance data merit order $ $ Load & Generation AESO Commercial Group Watt-Ex AS Contracts offers bids compliance & settlement trade data & unit position ANCILLARY SERVICESEXCHANGE STRUCTURE

  5. NON-PERFORMANCE • Trade cancellations prior to performance • Trades in Error • Trades that do not meet AESO standards • Overcommited units • Events of Force Majuere • Non-performance • Events of Force Majuere • Non-compliance

  6. QUESTIONS

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