Mesquite Solar 6
309.1 MW hybrid in Maricopa, AZ · In queue since April 2023 · Proposed COD April 2028
309.1 MW
Capacity
2
Components
Solar + Battery
3y 1m
In Queue
Not Started
IA Status
COD target: 2028
Total Duration
5 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: 2028-04-30
The proposed Mesquite Solar 6 project is a 309.1 MW hybrid solar and battery energy storage development project located in Maricopa County, Arizona. The project consists of a 154.6 MW solar array coupled with a 154.5 MW battery energy storage system.
Mesquite Solar 6 is in the CAISO interconnection queue (queue ID CAISO-54952), having entered the queue on April 17, 2023. The proposed commercial operation date is April 30, 2028. As of the current data, the interconnection agreement has not yet been started. The point of interconnection is the HASSAYAMPA 500 kV substation, and the interconnecting utility is SDGE. The project has appeared 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
SDGE
Entity
CAISO
Service Type
—
Point of Interconnection
HASSAYAMPA 500 kV
Data Source
LBNL
- 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.
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