DAYLIGHT (CAISO-1223) — Project Summary

Queue ID
CAISO-1223
Capacity
610.707 MW
Technology
Solar+Battery
Status
active
Location
Kings, CA
Region
CAISO
Developer
IA Status
IA Executed

DAYLIGHT

CAISO-1223BetaActiveSolarBatteryCAISOLBNL + Live

610.707 MW hybrid in Kings, CA · In queue since May 2016 · Proposed COD January 2028

610.707 MW

Capacity

2

Components

Solar + Battery

10 years

In Queue

IA Executed

IA Status

Signed Dec 2023

Interconnection

Queue → IA

7y 7m

IA → COD

4y 1m

Total Duration

7y 7m

Construction75%
Queue EntryMay 2, 2016

Interconnection request submitted to ISO/RTO

Cluster Study (Phase I/II)

CAISO uses cluster studies where projects are batched annually and studied together.

Typical: 36–48 months (IR to IA)

Interconnection AgreementDec 18, 2023

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2028-01-19

Technology
Solar310.707 MW · 51%
Battery300 MW · 49%
About

The DAYLIGHT project is a proposed 610.71 MW hybrid solar and battery energy storage project located in Kings County, California. The development project consists of 310.71 MW of solar photovoltaic generation coupled with a 300 MW battery energy storage system. The project is interconnected within the CAISO region and is in the CAISO interconnection queue as queue ID CAISO-1223, with an initial queue entry date of May 2, 2016. The proposed commercial operation date is January 19, 2028.

The interconnection agreement (IA) for the DAYLIGHT project has been executed as of December 18, 2023. The point of interconnection (POI) is the Mustang 230 kV substation. The project has been the subject of recent news coverage, with five articles categorized as industry-related and regulatory.

Generated from interconnection queue and public data sources

Project Details

State

CA

County

Kings

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

Utility

PGAE

Entity

CAISO

Service Type

Point of Interconnection

Mustang 230 kV

Data Source

LBNL + Live

Market Context
Approximate
ISO / RTO
CAISO
Trading Hub
TH_SP15_GEN-APND
Hub Confidence
MEDIUM
Nearest Node (Estimated)
GOLDTREE_1_N001
POI Substation
Mustang Substation (75)

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.

News & Articles (1)Beta

Last updated 2026-03-26

View all articles