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VECCs Variable Energy Content Curves

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VECCs Variable Energy Content Curves. Nancy Stephan Bonneville Power Administration RMJOC Climate Change Data Set Workshop June 9, 2009. What are they?.

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VECCs Variable Energy Content Curves

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  1. VECCsVariable Energy Content Curves Nancy Stephan Bonneville Power Administration RMJOC Climate Change Data Set Workshop June 9, 2009

  2. What are they? End of Month contents of a reservoir that is the lowest level to which the reservoir may be drawn in order to produce secondary energy and still refill by the end of July with 95% confidence.

  3. Water Supply Forecasts

  4. Why are they computed? • The VECC computation is done to update the 95% confidence lower limits for new forecast information. In this case VECC’s are computed after the release of each official Water Supply Forecasts. • The computed VECC’s are then input to the Treaty Storage Regulation (TSR) computation. • The computed VECC’s for the Canadian projects are also passed to Northwest Power Pool (NWPP) to include in the Actual Energy Regulation (AER).

  5. What will need to be developed? • CC water supply forecasts • CC forecast errors • CC runoff distributions • Mica, Arrow, Duncan, Dworshak, Libby, Grand Coulee, Hungry Horse

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