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Tracking Electricity Imports

Tracking Electricity Imports. David J. Lawrence Manager, Auxiliary Market Products Prepared for: RGGI I&L Workshop June 15, 2006. Goals of this Presentation. Understand the difference between external transaction contract flows and physical flows Overview of NERC transaction tag mechanism

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Tracking Electricity Imports

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  1. Tracking Electricity Imports David J. Lawrence Manager, Auxiliary Market Products Prepared for: RGGI I&L Workshop June 15, 2006

  2. Goals of this Presentation • Understand the difference between external transaction contract flows and physical flows • Overview of NERC transaction tag mechanism • Summary of aggregated NYISO external transactions • Implications of data tracking systems

  3. Schedules(Market World) HQ NE IESO NY MICHIGAN PJM OHIO WV VIRGINIA KENTUCKY

  4. Actual Power Flows(Operation’s World) HQ NE IMO NY MICHIGAN PJM OHIO WV VIRGINIA KENTUCKY

  5. NERC Tags • A NERC Tag identifies the transaction to all appropriate Control Areas- required for all external transactions • Four required components for entry of a NERC Tag (E-Tag): • SCA: Sending Control Area (NERC Identifier) • PSE: Purchasing Selling Entity • Unique # A Unique Number • RCA Receiving Control Area • A tag is submitted through a Tag Authority Service (e.g. OATI) and provided to all Control Areas impacted. • Used in the checkout process between Control Areas.

  6. External Transaction Checkout and Settlement Transactions may be submitted for evaluation in the Day-Ahead Market or the Hour Ahead Market. Transactions must check out with the appropriate control areas (day ahead and/or hourly). Acceptance is financially binding for the DAM. Once accepted in the Day-Ahead Market the transaction bid is carried over as an hourly bid for RTC evaluation.

  7. NYISO Ref. bus to proxy Proxy to NY load Proxy to NYISO Ref. LBMP Internal Bilaterals NY Gen to proxy Wheel through Details of NYISO External Transactions External transaction data, July 2004-June 2005 – percentages are approximate Internal LBMP sales: 42.5% Internal Bilateral sales: 38.3% NYISO Reference bus to External Proxy bus: 2.9% NY generator to external Proxy bus: 1.0% External Proxy bus to NY load: 0.3% External Proxy bus to NYISO Reference bus: 14.6% Wheel-throughs: 0.4%

  8. Implications for Tracking Imports and Exports • For imports, no specific generator information is known • Exports from specific generators to external proxy buses can be tracked by the exporting control area • Internal and external LBMP sales are indistinguishable • Internal bilateral sales can be identified separately Internal LBMP sales: 42.5% Internal Bilateral sales: 38.3% NYISO Reference bus to External Proxy bus: 2.9% NY generator to external Proxy bus: 1.0% External Proxy bus to NY load: 0.3% External Proxy bus to NYISO Reference bus: 14.6% Wheel-throughs: 0.4%

  9. Questions? David J. Lawrence dlawrence@nyiso.com 518-356-6084 www.nyiso.com

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