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Martin Adams Session 5 "The Water Energy Nexus"
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Martin L. Adams, Deputy Senior Assistant General Manager - Water SystemNovember 7 - 9, 2014
LADWP’s WATER/ENERGY
NEXUS
Southern CaliforniaWater Summit
& Fall Seminar
2
Presentation Outline
Overview of LADWP sources of water supplies Water System sustainable strategies Power System sustainable strategies Energy profiles for the water supply sources Integration of water and power – future
sustainability
Los Angeles Sources of Water
Delta
Los Angeles Aqueduct
Colorado River Aqueduct
State Water Project
Sierra Nevada Mountains
Local Groundwater, Water Recycling, and
Conservation3
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Reliable Water Supply by 2035
Water Conservation Program
5
CONSERVE
Local City Ordinances
Commercial Programs
Residential Programs
Public Outreach & Education
LADWP Partnerships
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20 Percent Reduction in GPCD
By 2017
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Stormwater Capture Program
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CAPTURECentralized Distributed
Dam Improvements
Rain GardensSpreading Basins
Rain Barrels
Cisterns
Water Recycling Program
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ReuseIndirect Potable Reuse
Non-Potable Reuse
San Fernando Basin Groundwater Remediation
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• Provide Environmental benefits
• Meet safe drinking water regulations
• Prevent total loss of the groundwater resource within the next decade
• Facilities GWR, Stormwater Capture, and Conjunctive Use
GHG emissions (AB 32):• Achieved 23% below 1990 level as of 2013• Expect to achieve 41% below 1990 level by 2025
Renewable energy (SB 2(1x)) : LADWP to reach 33% by 2020
Energy Efficiency (AB 2021): Achieve 15% by 2020
Sustainable Strategies for Power System
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Assessment of Energy Use and GHG Emissions for Water
SuppliesEnergy Use
0
530
1,139
2,000
2,580
3,236
0
500
1000
1500
2000
2500
3000
3500
kW
h p
er
AF
RecycledWater
CORiver
Aqued.
State Water Project
WestBranch
Total CO2 Emission
42
651
1,3991,468
1,893
2,363
0
500
1000
1500
2000
2500
Po
un
ds
pe
r A
F
LocalWells
RecycledWater
CORiver
Aqued.
Data is based on current City of Los Angeles/LADWP energy use and total carbon dioxide production associated with water supplies shown. Total distribution energy intensity is approximately 196 kWh/AF. (2009)
State Water Project
EastBranch
LocalWells
State Water Project
WestBranch
State Water Project
EastBranch
L.A. Aqueduct
(hydropower generator)
L.A. Aqueduct 11
LADWP Imported SuppliesWater Conveyance Energy
Profile
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 20130
200,000
400,000
600,000
800,000
1,000,000
1,200,000
LAA (Hydro Generation) Linear ( LAA (Hydro Generation)) MWD Supplies (Consumption) Linear ( MWD Supplies (Consumption))
Calendar Year
Tota
l Ene
rgy
(MW
h)
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LADWP Water SupplyEnergy Profile
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2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2015 2020 2025 2030 2035400,000
500,000
600,000
700,000
800,000
900,000
1,000,000
1,100,000
1,200,000
1,300,000
1,400,000LADWP Water Supply Energy Profile
Calendar Year
To
tal
En
erg
y (M
Wh
)
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Los Angeles faces significant challenges in regulatory compliance, infrastructure, and resource sustainability
Our future lies with local resource development – efficiently using and preserving what we have in our backyard
Water and power are intricately linked; we face significant challenges with both resources
Water conservation and local resources are the most sustainable and effective options - both are integral parts of Securing L.A.’s Water Supply
Summary
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Questions?
