NIGHTHAWK STORAGE
300 MW storage in San Diego, CA · In queue since April 2019 · Proposed COD March 2026
300 MW
Capacity
1
Components
Battery
7y 1m
In Queue
IA Executed
IA Status
Signed Jul 2021
Queue → IA
2y 3m
IA → COD
4y 8m
Total Duration
2y 3m
Schedule
2 months past proposed COD
Interconnection request submitted to ISO/RTO
CAISO uses cluster studies where projects are batched annually and studied together.
Typical: 36–48 months (IR to IA)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2026-03-01
The NIGHTHAWK STORAGE project is a proposed 300 MW battery storage project located in San Diego County, California. Interconnection is being managed through the CAISO queue, with queue ID CAISO-1673. The project entered the queue on April 15, 2019, and has a proposed commercial operation date of March 1, 2026. An Interconnection Agreement (IA) was executed on July 15, 2021. The project is linked to the existing Nighthawk Energy Storage, LLC operating plant (EIA plant ID 65889).
The NIGHTHAWK STORAGE project has been featured in recent news coverage.
Generated from interconnection queue and public data sources
State
CA
County
San Diego
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
SDGE
Entity
CAISO
Service Type
—
Point of Interconnection
Sycamore Canyon Substation 138 kV
Data Source
LBNL + Live
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- POMERADO_6_N008
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
Last updated 2026-03-26
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