ENERGY STORAGE IN CALIFORNIA
Seguro energy storage project
AES' Seguro storage project is a proposed battery energy storage project near Escondido and San Marcos, California, that will provide a critical, cost-effective source of reliable power to support the region’s electric grid. By delivering stored power when it is most needed, the Seguro storage project provides flexibility that will be critical to helping the San Diego region meet its decarbonization goals and California achieve 100% carbon-free energy by 2045.
320 MW planned capacity
Enough stored energy to power 240K homes for 4 hours
Located in North San Diego County, California
Our clean energy commitment
AES’ Seguro energy storage project is a planned facility in California. We are committed to responsible clean energy development that creates long-term value and positive impact for both the environment and local communities.
Economic and environmental benefits
We believe in being a good neighbor, ensuring responsible clean energy development that benefits both the environment and local communities without burdening existing infrastructure.
Supports electric grid reliability
by providing a flexible energy resource
$11 M
expected to be injected into the local economy over the life of the project
450 local jobs
estimated to be created during construction
Project details
- Containerized lithium-ion battery energy storage system (BESS)
- 22.5 acres of privately held land site location
- Features metal storage containers that will house racks of battery modules equipped with insulation and robust safety monitoring and management systems
- Feeds into the nearby existing San Diego Gas & Electric (SDG&E) Escondido Substation
- AES will be the long-term owner and operator of the facility
- Download the project FAQs here
Clean energy benefits
local communities
Long-term tax revenue to local communities and school districts
Job creation during construction and operation
Local economic stimulus during construction
Utilizes land near existing electric grid infrastructure to minimize need for new overhead transmission lines
Expected project timeline
Project updates
Sustainability Resources
Project safety
It’s important to remember that fires and thermal runaway incidents at battery storage facilities are rare occurrences. BESS technology, system design, safety features, and operational practices have advanced significantly in just the past few years. The energy storage technology being deployed today looks and operates very differently from the technology installed just three to five years ago. The industry has also developed a much deeper understanding of the technical and safety management of thermal hazards. More importantly, a new generation of BESS installations, including AES’ proposed Seguro BESS facility, will incorporate the latest design standards and safety features that greatly reduce the possibility of fire or thermal runaway.
Learn more about the safety standards and features of today’s battery energy storage systems.
Environmental and technical studies
The project will be reviewed under the California Environmental Quality Act (CEQA). Environmental and technical studies for the project will include a Phase I Environmental Site Assessment, hydrology, geotechnical, cultural resources, land, topography, biological, wetlands, economic impact and other studies. AES will work with the relevant government and regulatory agencies to mitigate potential environmental impacts from the project.
Local partnerships
AES is committed to being a good neighbor and partner to the communities where our projects are located. This includes informing and engaging project stakeholders and the public throughout all phases of the project. AES also supports local contractors, community organizations and programs. AES is proud to partner with Palomar College, Escondido Education Foundation, San Diego Children’s Discovery Museum, Solana Center, and Solutions for Change. Learn more about:
Contact us
We appreciate your interest in AES’ Seguro energy storage project. Please contact us using the information below.