The link between water and energy in San Diego
Source:
http://www.wrsc.org/sites/default/files/uploaded/2010/ElectricityWater-1.pdf
Embedded Scribd iPaper - Requires Javascript and Flash Player
Water/Energy Link
How are water and electricity connected in the San Diego region?
• Both are precious, vital and limited resources. • They are primarily supplied from outside San Diego County (between 75% and 95% of water, and up to 60% of electricity is imported). • Electricity is used to supply water to the region. • Their sources are subject to periods of supply or delivery shortages. • Both are easily conserved and can be used more efficiently. Saving water saves electricity Because of intensive energy use to supply water to our region, conserving water saves energy — and saves all of us money. Since 1990, per capita water consumption in the county has decreased 13% due to conservation efforts. Ways to conserve water and energy: • Use low-water plumbing fixtures and appliances. • Use low-water landscaping and irrigation. • Make water-wise behavior a way of life. Most of the electricity is used to pump millions of gallons of water from distant locations. Additional electricity — about 250 kWh per million gallons — is used at water treatment plants in the San Diego region. After the water is used, treating the wastewater uses about 1200 kWh per million gallons.
Sacramento River
230 KV transmission lines (orange)
Sacramento
San Francisco
San Diego’s water supply Local sources 15%
San Diego’s energy supply
Sa nJ oa
er Riv in qu
Local sources 40% Imported 60%
Imported 85%
California Aqueduct
• Approximately 7% of all electricity used in California is for pumping and treating water. At .12¢ per kWh, this costs approximately $1.8 billion per year. • The typical household in San Diego County uses about 450 gallons of water every day.
Getting water to San Diego
Due to our arid climate, most of the county’s water has to be imported hundreds of miles to reach us. Here’s how water reaches San Diego and how much energy is used in the process: SEQUENCE ENERGY USED Little to none Little to none Little to none High San Diego Los Angeles
500 KV transmission lines (red)
1 Mountain snowpack melts and 2 Some of that water is collected
and routed into aqueducts. several county reservoirs.
flows down rivers to the ocean.
Colorado River Aqueduct
4 Water is pumped from the
reservoirs to water-treatment facilities. ready for customers.
5 Safe to drink, the water is now 6 After use, wastewater is sent
to a treatment plant.
San Diego Aqueducts
Moderate (for gas water heating) to High (for electric water heating) High Low to moderate
7 After treatment, water is
disposed to the ocean or reused for irrigation.
1 Water source
2 Aqueduct
3 Reservoir
4 Water
treatment plant
5 Consumers
6 Wastewater
treatment plant
Col ora do Riv er
7 Ocean
Graphic by PAUL HORN
3 The aqueducts terminate in
Water/Energy Link
How are water and electricity connected in the San Diego region?
• Both are precious, vital and limited resources. • They are primarily supplied from outside San Diego County (between 75% and 95% of water, and up to 60% of electricity is imported). • Electricity is used to supply water to the region. • Their sources are subject to periods of supply or delivery shortages. • Both are easily conserved and can be used more efficiently. Saving water saves electricity Because of intensive energy use to supply water to our region, conserving water saves energy — and saves all of us money. Since 1990, per capita water consumption in the county has decreased 13% due to conservation efforts. Ways to conserve water and energy: • Use low-water plumbing fixtures and appliances. • Use low-water landscaping and irrigation. • Make water-wise behavior a way of life. Most of the electricity is used to pump millions of gallons of water from distant locations. Additional electricity — about 250 kWh per million gallons — is used at water treatment plants in the San Diego region. After the water is used, treating the wastewater uses about 1200 kWh per million gallons.
Sacramento River
230 KV transmission lines (orange)
Sacramento
San Francisco
San Diego’s water supply Local sources 15%
San Diego’s energy supply
Sa nJ oa
er Riv in qu
Local sources 40% Imported 60%
Imported 85%
California Aqueduct
• Approximately 7% of all electricity used in California is for pumping and treating water. At .12¢ per kWh, this costs approximately $1.8 billion per year. • The typical household in San Diego County uses about 450 gallons of water every day.
Getting water to San Diego
Due to our arid climate, most of the county’s water has to be imported hundreds of miles to reach us. Here’s how water reaches San Diego and how much energy is used in the process: SEQUENCE ENERGY USED Little to none Little to none Little to none High San Diego Los Angeles
500 KV transmission lines (red)
1 Mountain snowpack melts and 2 Some of that water is collected
and routed into aqueducts. several county reservoirs.
flows down rivers to the ocean.
Colorado River Aqueduct
4 Water is pumped from the
reservoirs to water-treatment facilities. ready for customers.
5 Safe to drink, the water is now 6 After use, wastewater is sent
to a treatment plant.
San Diego Aqueducts
Moderate (for gas water heating) to High (for electric water heating) High Low to moderate
7 After treatment, water is
disposed to the ocean or reused for irrigation.
1 Water source
2 Aqueduct
3 Reservoir
4 Water
treatment plant
5 Consumers
6 Wastewater
treatment plant
Col ora do Riv er
7 Ocean
Graphic by PAUL HORN
3 The aqueducts terminate in
Tags:
- Level: Regional,
- Geographic Area: San Diego,
- Category: Distributed Generation, Electricity Demand, Electricity Consumption, Electricity Transmission, Electricity Generation, Electricity Supply, Energy Conservation, Oceans and Rivers, River Basins, Water Availability, Water Conservation, Water Consumption, Water Demand, Water Level, Water Management, Water Resources, Water Sources, Water Supply, Watershed,