Avocet Energy Storage System Project


SCH Number
Lead Agency
City of Carson
Document Title
Avocet Energy Storage System Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Manufacturing Heavy (MH-D) zone; Heavy Industrial (HI) GP Land Use designation
Document Description
The Avocet Energy Storage Project (proposed project) is located on a 6.96-acre site at 23320 Alameda Street (project site) in the City of Carson (City). The proposed project includes the development of an approximately 200-megawatt battery energy storage system (BESS) located within the project site. The proposed project would consist of lithium-ion batteries (or similar technology available at the time of construction) installed in racks, inverters, medium-voltage (MV) transformers, switchgear, a collector substation, and other associated equipment to interconnect into the Southern California Edison (SCE) Hinson Substation. The containers or enclosures would have battery storage racks, with relay and communications systems for automated monitoring and management of the batteries to ensure design performance. A battery management system would be provided to control the charging/discharging of the batteries, along with temperature monitoring and control of the individual battery cell temperature with an integrated cooling system. Batteries operate with direct current (DC) electricity, which must be converted to alternating current (AC) for compatibility with the existing electric grid. Power inverters to convert between AC and DC, along with transformers to step up the voltage, would also be included. The generation transmission (gen-tie) line (gen-tie line) would interconnect the proposed project to the existing SCE Hinson Substation. The proposed gen-tie route would cross three jurisdictions including: the City of Carson, the City of Los Angeles, and the City of Long Beach. The proposed project would provide a service to the regional electric grid by receiving energy (charging) from the SCE electric transmission system, storing energy on site, and then later delivering energy (discharging) back to the point of interconnection (SCE Hinson Substation). SCE would install one tubular steel pole (TSP) approximately 130 feet tall with approximately a 12-foot wide by 30-foot-deep foundation. SCE would install a bundled 1590 thousand circular mils (KCMil) conductor from the SCE Hinson Substation rack position to the new SCE-owned TSP and span to the customer-owned points of change of ownership (POCO) TSP. The gen-tie line and route and SCE features and upgrades to the existing SCE Hinson Substation are collectively referred to as project-related offsite improvements. The project would require the following agreements, permits and approvals: CEQA Approval, Conditional Use Permit, Design Overlay Review, Development Agreement, National Pollutant Discharge Elimination System (NPDES) Construction General Permit would be required from the Los Angeles Regional Water Quality Control Board, General Construction Stormwater Permit, Demolition Permit, and Subsequent Approvals including issuance of applicable grading and building permits.

Contact Information

McKina Alexander
Agency Name
City of Carson, CD/Planning
Job Title
Senior Planner
Contact Types
Lead/Public Agency


Carson, Long Beach, Los Angeles, unincorporated area
Los Angeles
Citywide, Countywide, Southern California, Statewide, Unincorporated
Cross Streets
Sepulveda Blvd. / Alameda St.
Total Acres
Parcel #
State Highways
South Pacific Trans Co and Union
John Muir
Dominguez Channel

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Department of Water Resources (DWR), California Energy Commission, California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), Department of Toxic Substances Control, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Water Rights, California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
Development Types
Other (Battery Energy Storage System )
Local Actions
Site Plan, Use Permit
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Recreation, Tribal Cultural Resources, Utilities/Service Systems, Wildfire
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from State Reviewing Agency(ies)]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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