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Interaction between Scarcity Pricing and Demand Response

Interaction between Scarcity Pricing and Demand Response. Dongqing Holly Liu, Ph.D. Senior Market and Product Economist. Types of Demand Response Programs. Participating Load – Dispatchable Demand Response Capable of Day-ahead & Real-time participation

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Interaction between Scarcity Pricing and Demand Response

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  1. Interaction between Scarcity Pricing and Demand Response Dongqing Holly Liu, Ph.D. Senior Market and Product Economist

  2. Types of Demand Response Programs • Participating Load – Dispatchable Demand Response • Capable of Day-ahead & Real-time participation • Non-Participating Load – Price Responsive Demand Response • Day-ahead only • Emergency Triggered Interruptible Load • CAISO declared emergency or local transmission emergency

  3. Participating Load – Dispatchable DR • Fully dispatchable load acting as a resource bid at nodal level or Custom LAPs • Market - DAM & RTM; Product - Energy, A/S, and RUC • Able to set DA/RT nodal prices • Can directly contribute to the relief of reserve shortage

  4. Non-Participating Load – Price Responsive DR • DA Energy only participation at Default LAPs • Cannot bid into RT, but can adjust consumption at RT • NPL can only set DA Default LAP energy prices • Load reduction provided by both DA and Day-of NPL DR can indirectly contribute to the relief of reserve shortage by reducing the overall load on the system which may reduce A/S requirements in RT.

  5. Emergency Triggered Interruptible Load • 1700 MWs of Interruptible Load can be called upon only during a CAISO declared Stage 2 & 3 Emergency or for a local transmission emergency • No direct participation in DA or RT energy and capacity markets • If the existing Interruptible Load programs were modified to provide bids into the CAISO markets, then these resources could directly help reduce or avoid scarcity situations.

  6. Summary

  7. Comments • Please submit written comments to SPComments@caiso.com using the template posted at http://www.caiso.com/1bef/1bef12b9b420b0.html

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