A Request for Proposals (RFP) has been issued for a 500MW pumped hydro energy storage project at a reservoir in California by the San Diego County Water Authority.
The authority supports water supplies for more than three million people, supplying wholesale to 24 retail water providers. It has decided to put its San Vicente Reservoir into dual use by turning it into an on-demand clean energy facility while it also supplies water.
The San Diego County Water Authority has issued a formal request for proposals to build a pumped-storage generating system at the San Vicente Reservoir by 2030.
The project would use excess solar and wind energy to pump water to a new reservoir above the current dam, and then release it through turbines to generate up to 500 megawatts of electricity when needed.
Phil Fine stands in a parched field and watches a harvester gnaw through his carrot seed crop, spitting clouds of dust in its wake. Cracked dirt lines empty irrigation canals, and dust devils and tumbleweeds punctuate a landscape in shades of brown.
Across an invisible line separating Fine’s irrigation district from the next, it’s another world. Automated sprinklers hiss as they douse crops, cattle munch on green grass and water bubbles through verdant farmland.
Due to the lack of rainfall in the San Diego region, even sustainable landscaping sometimes relies on artificial irrigation. Irrigation systems must be thoughtfully designed, installed, and programmed. Once in place, the many interconnected mechanical elements must be maintained properly for optimal performance.
“Irrigation efficiency” is a way of describing how well your irrigation system is doing its job delivering water for the beneficial use of the plants in your landscaping.
When irrigation system efficiency isn’t maximized, it can cause you to use more water than needed. Possible problems fall in three major categories: site conditions in your landscaping, irrigation control, and the uniform distribution of water by your irrigation system.
You may want to get help planning your irrigation system from a qualified professional. Photo: San Diego County Water Authority
There are three ways to improve your irrigation system efficiency:
Setting and forgetting your irrigation controller is a thing of the past. Even if you don’t have a “smart” irrigation controller to adjust your program for weather conditions, be more proactive in managing your watering, and more closely try to match your watering schedule with the actual water needs of your landscaping.
Upgrading your system with state-of-the-art components is a good investment and the single most significant thing you can do to save water.
You may decide to get professional help with your irrigation system. Look for designers or contractors qualified to provide these services. Credentials such as the Irrigation Association’s Certified Irrigation Designer designation can help assure your project will be successful. You can also ask if your contractor is a Qualified Water Efficient Landscaper (QWEL).
This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.
San Diego County Water Authority this week issued a formal Request for Proposals seeking a full-service private partner capable of developing a large-scale pumped energy storage project planned jointly by the Water Authority and the City of San Diego. Proposals are due by 2 p.m. Nov. 3. The partner agencies aim to maximize the value of the existing San Vicente Reservoir for on-demand energy generation to support the state’s clean energy goals.
A 20-year megadrought in the West is threatening hydropower for millions of people, so the federal government is taking emergency action. It’s sending water from other reservoirs to Lake Powell to help keep the power turbines there spinning.
This year, natural disasters across the country — including epochal drought conditions and devastating wildfires in California — have thrown into sharp relief the urgent need for action on climate. Despite the urgency of the issue, proposed legislation in the state to address climate change has either been thwarted or diluted by the powerful fossil-fuel industry’s allies and lobbyists.
San Diego County Water Authority this week issued a formal Request for Proposals seeking a full-service private partner capable of developing a large-scale pumped energy storage project planned jointly by the Water Authority and the City of San Diego. Proposals are due by 2 p.m. Nov. 3, and details such as how to file are included in the RFP document at www.sdcwa.org/contracting-opportunities.
The partner agencies aim to maximize the value of the existing San Vicente Reservoir for on-demand energy generation to support the state’s clean energy goals. The Water Authority and the City of San Diego are seeking a full-service, multidisciplinary team capable of delivering and operating the project. The scope of work is divided into two phases: Phase 1 Preliminary Work and Phase 2 Implementation Work. The RFP details the scope of work required for development and deployment of the project, including a financial plan.
“This is an exciting project that meets multiple goals for the San Diego region, including protection from blackouts and supporting climate-friendly energy sources,” said Gary Bousquet, director of engineering for the Water Authority. “We are committed to finding a private partner who can help move this from concept to completion.”
In July 2021, the San Vicente Energy Storage Facility received $18 million in the state budget, enough to advance it through initial design, environmental reviews, and the federal licensing process. The San Vicente project is one of the most promising pumped energy storage solutions in California and it would be a major asset to help avoid rolling blackouts through on-demand energy production while helping to meet state climate goals. 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.
“The San Vicente Energy Storage Facility is an important project for San Diego,” said Juan Guerreiro, executive assistant director of the City of San Diego’s Public Utilities Department. “It will improve our energy security, with a clean renewable power solution to help us efficiently manage the energy supply within our region.”
With state funding in place, the Water Authority and the City are preparing to launch federal and state environmental reviews and seek a project license from the Federal Energy Regulatory Commission. Those complex components are expected to take at least four years, with construction completion forecast for 2030. The critical infrastructure project will create more than 1,000 construction-related jobs in addition to its other benefits.
Upon completion, the San Vicente energy project would provide up to 500 megawatts of long-duration stored energy, which will assist in meeting peak electrical demand periods throughout Southern California and help meet the goals of Senate Bill 100, which requires 60% renewable energy by 2030 and 100% zero-carbon energy resources statewide by 2045. The project will provide enough energy for about 135,000 households when operating.
California’s continuing shift to renewables will require new kinds of investments, markets, and business practices. Electric grids need to be more flexible; new kinds of power supplies will help deliver energy flexibility when needed; and new pricing systems are needed to send clear signals to developers and financial markets that these projects need to move forward.
Pumped energy storage projects are a major piece of the solution. They are designed to store excess renewable energy from solar and wind during the day, and then discharge that energy when energy use increases in the evening and renewable energy is not available.
The San Vicente project would create a small upper reservoir above the existing San Vicente Reservoir in Lakeside, along with a tunnel system and an underground powerhouse to connect the two reservoirs. The powerhouse would contain four reversible pump turbines.
During off-peak periods – when power is inexpensive and renewable supplies from wind and solar facilities exceed demand – turbines would pump water to the upper reservoir where it would act as a battery of stored potential energy. During high energy use, the system would discharge water from the upper reservoir downhill through the turbines, producing energy. The exchange between the two reservoirs would not consume water.
San Vicente Reservoir is near major electricity transmission interconnection facilities, which would allow the project to play a central role in integrating solar and wind energy from across the Southwest for use in San Diego County. The San Vicente project is largely immune to the challenges faced by some conventional hydropower facilities because it is a closed-loop system that mainly holds imported water and is not reliant on runoff that can fluctuate significantly from year to year and hamper power production.
(Editor’s note: The City of San Diego is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)
Sept. 14, 2021 – The San Diego County Water Authority this week issued a formal Request for Proposals seeking a full-service private partner capable of developing a large-scale pumped energy storage project planned jointly by the Water Authority and the City of San Diego. Proposals are due by 2 p.m. Nov. 3, and details such as how to file are included in the RFP document at www.sdcwa.org/contracting-opportunities.
On Aug. 3, the State Water Resources Control Board completely eliminated 2021’s surface water supplies for farms in much of the state. It has impacted farmers like John Moore III, who grows pistachios at Moore Farms in Arvin.
“We’ve got about 100 acres of pistachios, 200 of almonds and everything else goes to open farmland, carrots, potatoes and we have a small block of citrus as well that goes to both domestic and export buyers,” said Moore
The Water News Network is San Diego County’s source for water news and information.
