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San Diego Water Storage Project

San Diego Water Storage Project

Paradox Energy Systems – European provider of EMS, BMS, PCS remote monitoring, thermal runaway detection, and intelligent O&M for solar storage and data center power.

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Emergency Storage Project San Diego County Water

Emergency Storage ProjectEmergency Storage Project San Diego County Water Authority 4677 Overland Ave. San Diego, CA 92123 Printed on recycled paper The Water Authority is a public agency serving the San Diego region as a wholesale supplier of water. The Water Authority works through its 23 member agencies to provide a safe, reliable water

Apr 08, 2026
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NSDCWRC Home

Project Benefits. Adds 41 million gallons of recycled water per day to San Diego County''s water supply portfolio at full build-out. Reduces impact of inevitable water supply shortages on San Diego County''s $215 billion economy. Creates more than 10,000 jobs, according to Council of Economic Advisers estimates. Serves as green infrastructure by reducing wastewater flows to

Oct 14, 2025
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Olivenhain Dam & Reservoir

Boosting Region''s Water Reliability At 318 feet tall, Olivenhain Dam was the first roller-compacted concrete dam built in California and was the largest dam of its kind in North America. An impressive engineering accomplishment, the dam was designed to remain fully functional during a magnitude 7.25 earthquake and keep water flowing to the region. The Emergency & Carryover

Nov 03, 2025
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Water & Sewer Projects

The project scheduled for your neighborhood is part of the City''s program to upgrade the water and sewer system. Many of the older water and sewer pipes throughout San Diego have been scheduled for replacement because of their age, a history of leaks, breaks or other problems. The larger water pipes that serve streets are called mains.

May 24, 2026
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Award-Winning Hauck Mesa Storage Reservoir Project

The award-winning Hauck Mesa Storage Reservoir enhances drinking water supply reliability and operational efficiency for the region. Construction was completed June 23 on the San Diego County Water Authority project in North San Diego County. Work started in March 2021 with the demolition of an out-of-service steel tank.

Jun 20, 2026
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PureWater San Diego''s

The Pure Water San Diego Program (Pure Water) is a safe, reliable and cost-effective investment for the City of San Diego (City). It provides multiple benefits for San Diego residents: Project-specific Environmental Impact Report creation relies on data and information developed during pre-design and design Time 6. Pure Water Program

Jun 08, 2026
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Seguro Storage Major Use Permit

The project is a Major Use Permit to construct, operate, and maintain a 400-megawatt (MW) battery storage facility and consists of the development of a battery energy storage system (BESS) that would interconnect to the San Diego Gas & Electric (SDG&E) Escondido Substation via a proposed Project generation tie (gen-tie) line (Project). The

Jul 23, 2025
Global Supply

San Vicente Potential Energy Storage Facility Project Moves Ahead

The San Diego County Water Authority and the City of San Diego are partners in developing the San Vicente Energy Storage Facility. The pumped storage energy project at San Vicente Reservoir could store 4,000 megawatt-hours per day of energy, or 500 megawatts of capacity for eight hours. Graphic: San Diego County Water Authority

Oct 23, 2025
Global Supply

San Vicente Energy Storage Facility project Archives

The construction of a proposed pumped hydro energy storage facility at the San Vicente Reservoir near Lakeside recently took a couple of steps forward but the project still needs to clear regulatory hurdles to become reality — and a backcountry conservation group has already come out in opposition to the project. The city of San Diego and the

Aug 31, 2025
Global Supply

Request for Proposals Issued to Develop San Vicente Energy Storage

Agencies seek private partner for major energy storage project in San Diego County. It also could mitigate costs for water ratepayers across the San Diego region by generating additional revenue to help offset the cost of water purchases, storage, and treatment. The City and the Water Authority are developing the project together, just like

Dec 23, 2025
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Hauck Mesa Storage Reservoir

The Hauck Mesa Storage Reservoir project constructed a new, above ground water tank, or storage reservoir, on the Valley Center Pipeline to enhance service reliability. The reservoir will help eliminate pump station surge and outage events and provide operational flexibility by balancing treated water flows between the First and Second Aqueducts.

Feb 19, 2026
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Lake Hodges Project Now Delivering Full Energy Benefits for San Diego

The Lake Hodges project is a key part of the Water Authority''s $1.5 billion Emergency Storage Project, a system of reservoirs, pipelines and pumping stations designed to ensure that up to a six-month supply of locally stored water will be available for the San Diego region if a disaster or other event interrupts imported water deliveries.

Sep 05, 2025
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Olivenhain-Hodges Emergency Storage

The Lake Hodges Pump Station is part of the San Diego County Water Authority''s Emergency Storage Project (ESP). The ESP is a system of reservoirs, interconnected pipelines and pumping stations that will make water available to the San Diego region in the event of an interruption in imported water deliveries. The pump station houses two 28,000

May 15, 2026
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Water Authority Supports Bill to Spur Pumped Storage

The Water Authority and the City of San Diego are exploring a potential pumped storage energy project at the San Vicente Reservoir that could store 4,000 megawatt-hours per day of energy, or 500 megawatts of capacity

Nov 10, 2025
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Facilities

The San Vicente Facilities are part of the $1.5 billion Emergency & Carryover Storage Project, a system of reservoirs, interconnected pipelines and pumping stations designed to make water

Mar 18, 2026
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A California project would store solar energy to use when the sun

The San Diego County Water Authority has an unusual plan to use the city''s scenic San Vicente Reservoir to store solar power so it''s available after sunset. The project, and others like it, could

Aug 01, 2025
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First steps taken to make pumped hydro energy

With an $18 million boost from the state, a major energy storage project using hydroelectric power is taking shape at the San Vicente Reservoir, nestled in the Cuyamaca Mountains near...

Jan 19, 2026
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San Vicente Facilities

The dam raise also created the greatest single increase of water storage capacity in San Diego County history. In 1943, the City of San Diego constructed the 220-foot-tall San Vicente Dam to store up to 90,000 acre-feet of water. The San Vicente Dam Raise project increased the height of the dam by 117 feet. At the time of its completion, it was

Mar 25, 2026
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SAN VICENTE ENERGY STORAGE FACILITY

of developing a pumped storage energy project at the City of San Diego''s San Vicente Reservoir near Lakeside. It would store 4,000 megawatt-hours per day of energy (500 megawatts of capacity for eight hours), enough energy for about 135,000 households. MORE INFO The Water Authority, which owns approximately two-thirds of the reservoir''s

Oct 26, 2025
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The Massive 5-Million-Gallon Water Tank You Will Never See

The San Diego County Water Authority is building a massive 5-million-gallon concrete water storage tank, called a flow regulatory structure, in Mission Trails Regional Park.

Oct 10, 2025
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Informational Materials | City of San Diego Official Website

Pure Water San Diego Community Presentation - 2023; San Diego''s Pure Water Demonstration Facility - How It Works (video) Phase 1 Projects Information. Pure Water EIR and Morena Project - Answers to FAQs; Related Facilities Point Loma Wastewater Treatment Plant 2015 San Diego 301(h) Modified Permit Application (Point Loma Wastewater

Jun 17, 2026
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Pure Water San Diego | City of San Diego Official Website

Pure Water San Diego is the City of San Diego''s phased, multi-year program that will provide nearly half of San Diego''s water supply locally by the end of 2035. The Pure Water San Diego Program will use proven water purification technology to clean recycled water to produce safe, high-quality drinking water.

Sep 19, 2025
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News Release

It also could mitigate costs for water ratepayers across the San Diego region by generating additional revenue to help offset the cost of water purchases, storage, and treatment. The City and the Water Authority are developing the project together, just like they did to raise the height of the city-owned San Vicente Dam 117 feet in the 2010s.

Oct 21, 2025
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Olivenhain-Hodges Emergency Storage

The Lake Hodges Pump Station is part of the San Diego County Water Authority''s Emergency Storage Project (ESP). The ESP is a system of reservoirs, interconnected pipelines and pumping stations that will make water available

Feb 21, 2026
Global Supply

CHAPTER 3: EXISTING CONDITIONS IN THE

emergency water storage requirement for the City of San Diego. The reservoirs and associated facilities are owned and operated by the City of San Diego. The Alvarado Water Treatment Plant, located adjacent to Murray Reservoir, serves as a terminus for this system (Figure 2-3.1). The management of the water supply system typically attempts to

Apr 26, 2026
Global Supply

San Diego Water issues RFP for 500 MW pumped hydro storage project

The San Diego County Water Authority (SDCWA) on Tuesday issued a request for proposals for 500 MW pumped hydro storage project with the City of San Diego. The project would use San Diego''s

Sep 18, 2025
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Lake Hodges Pumped Storage

The Lake Hodges Pump Station is part of the San Diego County Water Authority''s Emergency Storage Project (ESP). The Olivenhain-Hodges pumped storage project is an integral component of the Lake Hodges project, providing

Mar 20, 2026
Global Supply

News Release

The largest water storage project in San Diego County history is complete, providing the region with a critical hedge against future water shortages. The San Vicente Dam Raise project adds 152,000 acre-feet of water storage capacity to the reservoir, enough to serve more than 300,000 homes for a year. Filling the reservoir will take two to five years, depending

Nov 28, 2025
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Metropolitan Water District to Optimize Solar

The Metropolitan Water District of Southern California is preparing to build four new battery energy storage systems that will boost the district''s energy resilience and cut operational costs by optimizing solar power and reducing peak load at its facilities.. On October 13, 2020, the agency''s board of directors voted to authorize $2.2 million to design the battery systems at water

Jul 19, 2025
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Pumped storage project gets seed money now the work begins

A 500 MW pumped energy storage project proposed jointly by the City of San Diego and the San Diego County Water Authority received $18 million in the California state

Mar 29, 2026
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News Release

The San Vicente Dam Raise Project is the largest piece and final major element of the Water Authority''s $1.5 billion Emergency Storage Project, a system of reservoirs,

Aug 11, 2025
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MS 302 San Diego County Water Authority Collection

Series V: San Diego Water Development, 1925-1996: Box-folder: History: Timelines, undated: 15:2: History: “San Diego''s quest for water,” 1947: 15:3: History: “A history of the dams and water supply of western San Diego County” part 1, 1953: 15:4: History: “A history of the dams and water supply of western San Diego County” part 2

Jan 03, 2026
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Canal Upgrade Optimizes Water Deliveries, Saves Millions for

The Coachella Mid-Canal Storage Project, completed this summer, made critical upgrades to the 123-mile Coachella Canal, which provides Colorado River water to the Coachella Valley and – under landmark water conservation agreements – the San Diego region. The $7.5 million project was funded jointly by the three water agencies through a low

Sep 22, 2025
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Reservoirs

The last major increase in San Diego regional water storage capacity occurred in 2014 when the San Vicente Dam Raise was completed, adding 157,000 acre-feet of capacity. While the region''s reservoirs were built mainly as water supply projects, they also provide other benefits such as recreation, flood reduction and hydroelectric generation.

Aug 19, 2025
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Northern California

Water Authority Comments on the Negotiations for a SWP Contract Amendment for Delta Conveyance – August 7, 2019. Water Authority Board Chair to Gov. Newsom: Executive Order N-10-19/California Water Solutions – May 6, 2019. Water Authority Comments on Draft EIR for the SWP Supply Contract Amendments for Water Management and California

Jul 06, 2026
Global Supply

Award-Winning Hauck Mesa Storage Reservoir Project

The award-winning Hauck Mesa Storage Reservoir enhances drinking water supply reliability and operational efficiency for the region. Construction was completed June 23 on the San Diego County Water

Jan 04, 2026
Global Supply

First steps taken to make pumped hydro energy storage project at San

With an $18 million boost from the state, a major energy storage project using hydroelectric power is taking shape at the San Vicente Reservoir, nestled in the Cuyamaca Mountains near Lakeside.The

Sep 26, 2025
Global Supply

Lake Hodges Pumped Storage Facilities

The Lake Hodges facilities are part of the San Diego County Water Authority''s Emergency & Carryover Storage Projects & Facilities, a system of reservoirs, interconnected pipelines and pumping stations designed to make water

Oct 15, 2025
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San Diego County Water Authority Emergency Water Storage

Project Description: The San Diego County Water Authority (Water Authority) is preparing to implement the final phase of its multi-phase Emergency Water Storage Project

Feb 08, 2026
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2023 Pure Water Annual Report

Facility has surpassed 50% completion, while two of the four new 150-foot diameter secondary clarifiers are nearing completion at the North City Water Reclamation Plant. The Morena Pump Station is beginning to take shape northeast of the Interstate 8 and Interstate 5 interchange near the San Diego River, and one

Sep 10, 2025
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Water Ways Report

The County conducted a regional assessment of drought management and water use strategies that align with California''s Water Supply Strategy, address local needs and opportunities, and include input from various stakeholders across the greater San Diego Region, including San Diego County, local municipalities, Tribal Nations, Imperial County, and Mexico

Nov 07, 2025
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Public Utilities

This system includes 49 water pump stations, 29 treated water storage facilities, three water treatment plants, and approximately The Department is launching a proven innovative water purification program known as Pure Water San Diego. Pure Water San • Finalize the Pure Water Project Labor Agreement

Mar 06, 2026

3 Frequently Asked Questions about “San Diego Water Storage Project”

Is there a pumped hydro storage facility in San Diego?

There's already a pumped hydro storage facility in San Diego. Lake Hodges has a two-turbine pumphouse that sends water up 770 feet from the city-owned Hodges Reservoir to the the Water Authority's Olivenhain Reservoir more than a mile away, generating some 40 megawatts of power on demand.

How did the emergency & carryover storage project impact San Diego County?

To mitigate construction impacts from the Emergency & Carryover Storage Project, the Water Authority funded the acquisition of nearly 600 acres of upland habitat areas and created or enhanced nearly 40 acres of wetland habitat in San Diego County. Construction of the facilities began in 2005, and operations began in 2012.

Does San Diego have a gas & electric substation?

Electricity from the project can be fed into a nearby San Diego Gas & Electric substation. David Victor, a UC San Diego professor who co-directs the university's Deep Decarbonization Initiative, has been a strategic consultant to the city of San Diego on the San Vicente Energy Storage Facility.

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