California Energy Commission 1 Water, Power and California’s Future Commissioner Karen Douglas, J.D. Water, Energy and Climate Change North Bay Watershed

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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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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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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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Natural Gas41%

Hydroelectric21%

Coal16%

Nuclear13%

Other Renewable9%

Water as Power

CEC – California’s Generation Mix, 2006

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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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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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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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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


Industrial

WaterDistribution





Recycled Water

Distribution

Source

Source

Water Conveyance

Water Treatment

End-Use


Industrial

WaterDistribution





Recycled Water

Distribution

Source

Source

Outside the retail meter

Energy in the Water-Use Cycle

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California’s Greenhouse Gas Emissions

ARB - Emission Inventory for 2004

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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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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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Achieve AB 32 Goals

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“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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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

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Information

• Energy Commission’s Website:

http://www.energy.ca.gov/– California Water-Energy Relationship

• Climate Action Team and Initiatives

http://www.climatechange.ca.gov/climate_action_team/index.html

Documents

California Energy Commission 1 Water, Power and California’s Future Commissioner Karen Douglas, J.D. Water, Energy and Climate Change North Bay Watershed