December 16, 2013
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Making Clean Local Energy Accessible Now December 16, 2013
Flattening the DuckDynamic Grid Solutions for Integrating Renewables
Making Clean Local Energy Accessible Now
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The California ISO Duck Chart (2012 – 2020)
5,300 MW 8-11am
Potential over-generation
13,100 MW 5-8pm
Making Clean Local Energy Accessible Now
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CAISO Duck Chart (2020 Issues)
5,300 MW 8-11am Potential
over-generation
13,100 MW 5-8pm
Making Clean Local Energy Accessible Now
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Flatten the Duck – Import/Export
Import/Export
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Flatten the Duck – Curtail Baseload GenerationRather than address over-generation with more natural gas generation, California can strategically plan maintenance on baseload plants during shoulder months.
Source: CAISO Summer Loads and Resources Assessment
CAISO planned outages ranged up to 7000 MW per weekday in the summer of 2012.
Making Clean Local Energy Accessible Now
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Flatten the Duck – Demand Response
Demand Response
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Addressing the Duck Chart with Energy Storage
Energy Storage
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Addressing the Duck Chart with Curtailment
Curtailment
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Flattening the Duck: All Solutions
Making Clean Local Energy Accessible Now
Back-up Slides
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Import/Export Assumptions
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Import/Export Assumptions
Source: CAISO 2013 Summer Loads & Resources Assessment (May 6, 2013)
2012 Peak Daily ISO Imports = ~11,500 MW
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Demand Response Assumptions
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Energy Storage Assumptions
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Curtailment Assumptions
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CAISO Duck Chart (2020 vs. 2013)
Lowest net load: 11,700 MW around
1pm
Highest net load: 25,000 MW at 8pm
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Natural Gas Plants Have Integration CostsRenewables have predictable variability. Fossil fuel power plants often shut down unexpectedly, forcing energy consumers to foot the bill for reserves and frequency response.
Source: CAISO Summer Loads and Resources Assessment
More than half of the outages associated with conventional generation are unplanned.
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