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Lou Oberski WEQ EC Chair Lou Oberski WEQ EC Chair THE ELECTRIC DAY Energy Day Meetings December 1-2, 2004 THE ELECTRIC DAY Energy Day Meetings December 1-2, 2004
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The Standard Electric Day Midnight to Midnight - Changes with time zone - Market timelines may differ by region but are based on midnight to midnight in their respective time zone
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The Standard Electric Day 24 Hour Operation On peak hours Monday thru Saturday Eastern Interconnection - - 7:00 a.m. to 11:00 p.m. EPT 6:00 a.m. to 10:00 p.m. CPT ERCOT - - 8:00 a.m. to 11:00 CPT Western Interconnection - - 7:00 a.m. to 11:00 p.m. PPT Off peak hours (includes all hours on Sundays and Holidays) Eastern Interconnection - - 11:00 p.m. to 7:00 a.m. EPT 10:00 p.m. to 6:00 a.m. CPT ERCOT - - 11:00 p.m. to 8:00 a.m. CPT Western Interconnection - - 11:00 p.m. to 7:00 a.m. PPT 7:00 a.m.11:00 p.m. Midnight to Midnight Electric Day On-Peak Energy Products
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7:00 a.m.11:00 p.m. Midnight to Midnight Electric Day On-Peak Energy Products - Most liquid on-peak 5x16 - 5 weekdays, 16 hrs/day - Contained within 1 electric day - Spans 2 current gas days
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Accounting,Settlement & Balancing - Done hourly based on calendar day (electric day) - Electricity has an instantaneous supply and demand balance requirement - Electricity has no equivalent to gas storage - Voltage levels strictly regulated - Unable to change voltage the way gas changes pressure 7:00 a.m.11:00 p.m. Midnight to Midnight Electric Day On-Peak Energy Products
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Conclusions - Midnight to Midnight Electric Day exists with time zone variations - Simple standardization across time zones will require changes - Electric industry is a 24 hour business with instantaneous balancing requirements
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