CENTENNIAL FLATS
767 MW hybrid in La Paz, AZ · In queue since April 2018 · Proposed COD April 2026
767 MW
Capacity
2
Components
Solar + Battery
8y 3m
In Queue
IA Executed
IA Phase
Signed Jan 2023
Queue → IA
4y 9m
IA → COD
3y 3m
Total Duration
4y 9m
Schedule
3 months past proposed COD
Study Phase
C11
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: 18–30 months
Proposed COD: 2026-04-15
- 2022·Eolus→Copia Powersource
The Centennial Flats project is a proposed 750 MW hybrid solar and battery energy storage development in La Paz County, Arizona. The project, located in the California Independent System Operator (CAISO) region, consists of a 500 MW solar photovoltaic array coupled with a 250 MW battery energy storage system. The project is being developed by DCRT.
The project, identified as CAISO-1529 in the CAISO interconnection queue, entered the queue on April 16, 2018, and has a proposed commercial operation date of April 15, 2026. An Interconnection Agreement (IA) for the project was executed on January 5, 2023. The point of interconnection is the Delaney-Colorado River 500 kV Line. The Centennial Flats project has been the subject of recent news coverage.
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
AZ
County
La Paz
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
DCRT
Entity
CAISO
Service Type
NRIS
Point of Interconnection
Delaney-Colorado River 500 kV Line
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_SP15_GEN-APND
- Hub Confidence
- LOW
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
View all articlesTop solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top 10 solar states
Data tables and metrics from the InfraSure database.
Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
