ALTA CASA STORAGE
515.418 MW storage in San Joaquin, CA · In queue since April 2021 · Proposed COD October 2031
515.418 MW
Capacity
1
Components
Battery
5y 3m
In Queue
IA Executed
IA Phase
Signed Dec 2024
Queue → IA
3y 8m
IA → COD
6y 10m
Total Duration
3y 8m
Study Phase
C14
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: 2031-10-21
The Alta Casa Storage project is a proposed 515.42 MW battery storage project located in San Joaquin County, California. The project is in the California Independent System Operator (CAISO) interconnection queue as entry CAISO-1922, with a queue entry date of April 15, 2021, and a proposed commercial operation date of October 21, 2031. The project's interconnection agreement (IA) has been executed.
The project, which is being developed within the Pacific Gas and Electric (PGAE) service area, has been the subject of recent news coverage related to regulatory matters. The point of interconnection is the Tesla 500 kV substation.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
CA
County
San Joaquin
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
NRIS
Point of Interconnection
Tesla 500 kV
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- CAISO
- Trading Hub
- TH_NP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- TESLA_1_B1
- POI Substation
- Tesla Substation
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.
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Ask about ALTA CASA STORAGEForward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
