HARQUAHALA FLATS 2
821.52 MW hybrid in Maricopa, AZ · In queue since April 2021 · Proposed COD April 2028
821.52 MW
Capacity
2
Components
Solar + Battery
5y 1m
In Queue
System Impact Study
IA Status
COD target: 2028
Total Duration
7 years
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 not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2028-04-15
The Harquahala Flats 2 project is a proposed 821.52 MW hybrid solar and battery energy storage project located in Maricopa County, Arizona. The development project consists of 410.76 MW of solar photovoltaic generation paired with 410.76 MW of battery energy storage. The project, developed by DCRT, is currently active in the California Independent System Operator (CAISO) interconnection queue as queue ID CAISO-2027, with an interconnection queue entry date of April 15, 2021.
The proposed commercial operation date for Harquahala Flats 2 is April 15, 2028. The project's interconnection status is currently in the System Impact Study phase. The point of interconnection is the Delaney Substation 500 kV. The project has been mentioned in recent news coverage.
Generated from interconnection queue and public data sources
State
AZ
County
Maricopa
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
DCRT
Entity
CAISO
Service Type
—
Point of Interconnection
Delaney Substation 500 kV
Data Source
LBNL + Live
- 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
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