california energy commission 1 water, power and california’s future commissioner karen douglas,...
TRANSCRIPT
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California Energy Commission
Water, Powerand California’s Future
CommissionerKaren Douglas, J.D.
Water, Energy and Climate ChangeNorth Bay Watershed Association 2008 Conference
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California Energy Commission
Common System Issues• Growing Demand
• Adequate Supplies
• Resource Quality
• Infrastructure
• Cost
• Environmental Protection
• Long-term Uncertainty
Climate Change forces us to examine the nexus
between
water & energy!
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California Energy Commission
Intersection of Water-Energy
• Electricity Generation– Hydro-electric Generation– Biogas and Other Renewable Generation– Power Plant Cooling– 21 % of California’s Electricity Supply
• Water Conveyance, Treatment and Delivery Systems– Natural and Manmade Systems to Move Water to Where it is
Demanded– 27 % of total energy demand
• Water-related End Uses– 73 % of total energy demand
• Water Supplies– Efficiency and Conservation– New Sources: Desalination, Stormwater Capture; Recycled
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California Energy Commission
Natural Gas41%
Hydroelectric21%
Coal16%
Nuclear13%
Other Renewable9%
Water as Power
CEC – California’s Generation Mix, 2006
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California Energy Commission
Patterns of Peak Demand
20000
25000
30000
35000
40000
45000
50000
55000
Summer (May - Sept)
Low points are weekend or holidays
Demand is volatile in the summer
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California Energy Commission
Peak is Important
-
1,000
2,000
3,000
4,000
5,000
6,000
Bay Area, North andCentral Coast
South Coast/SanDiego
Non-Coastal LABasin
Valley/Desert
Meg
awat
ts
Increase in Peak Demand 2012-2018
Increase in Peak Demand 2007-2012
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California Energy Commission
Energy Demand of New Water
1,228
2,915
3,222
5,217
6,138
7,672
9,820
13,503
Recycling
Groundw ater Pumping
Ion Exchange
Chino Desalter
Colorado River Aqueduct
West Branch State Water Project
East Branch State Water Project
Ocean Desalter
So
urc
e o
f W
ater
kWh/MG
Source: Dr. Robert Wilkinson, Environmental Studies Program, University of California, Santa Barbara, and Martha Davis, IEUA
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California Energy Commission
Water Conveyance
Water Treatment
End-Use
AgriculturalResidentialCommercial
Industrial
WaterDistribution
Wastewater Treatment
Wastewater Collection
Wastewater Discharge
Recycled WaterTreatment
Recycled Water
Distribution
Source
Source
Outside the retail meter
Water Conveyance
Water Treatment
End-Use
AgriculturalResidentialCommercial
Industrial
WaterDistribution
Wastewater Treatment
Wastewater Collection
Wastewater Discharge
Recycled WaterTreatment
Recycled Water
Distribution
Source
Source
Water Conveyance
Water Treatment
End-Use
AgriculturalResidentialCommercial
Industrial
WaterDistribution
Wastewater Treatment
Wastewater Collection
Wastewater Discharge
Recycled WaterTreatment
Recycled Water
Distribution
Source
Source
Outside the retail meter
Energy in the Water-Use Cycle
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California Energy Commission
California’s Greenhouse Gas Emissions
ARB - Emission Inventory for 2004
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California Energy Commission
Regional Issues and Differences
Indoor Uses Outdoor Uses
Northern California kWh/MG
Southern California kWh/MG
Northern California kWh/MG
Southern California kWh/MG
Water Supply and Conveyance 2,117 9,727 2,117 9,727
Water Treatment 111 111 111 111
Water Distribution 1,272 1,272 1,272 1,272
Wastewater Treatment 1,911 1,911 0 0
Regional Total 5,411 13,022 3,500 11,111
One solution may not be appropriate for everyone.
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California Energy Commission
WET CAT Strategies
• Require Recycle Water Programs at all Wastewater Treatment Plants
• Develop Urban Runoff and Expanded Stormwater Capture Programs
• Promote Greater End Use Water Efficiency through Mandates and Incentives
• Lower the Energy Intensity of the California’s Water Systems
• Develop Renewable Electric Generation at Water-related Sites
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California Energy Commission
“Anyone who can solve the problems of water will be worthy of
two Nobel Prizes – one for peace and
one for science.”
John F. Kennedy
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California Energy Commission
Global Warming Solutions Act
“The debate is over. We know the
science. We see the threat. And we know
that the time for action is now.”
– Governor Arnold SchwarzeneggerExecutive Order S-3-05
AB 32 (Nunez), Statutes of 2006