PUFF HYBRID SOLAR (CAISO-1740) — Project Summary

Queue ID
CAISO-1740
Capacity
203.6 MW
Technology
Solar+Battery
Status
active
Location
Kern, CA
Region
CAISO
Developer
IA Status
System Impact Study

PUFF HYBRID SOLAR

CAISO-1740BetaActiveSolarBatteryCAISOLBNL + Live

203.6 MW hybrid in Kern, CA · In queue since April 2020 · Proposed COD September 2030

BA: CISOISO/RTO: CAISONERC: WECCRC: RCW

203.6 MW

Capacity

2

Components

Solar + Battery

6y 3m

In Queue

System Impact Study

IA Phase

COD target: 2030

Interconnection

Total Duration

10y 5m

Study Phase

C13

Impact Study25%
Queue EntryApr 15, 2020

Interconnection request submitted to ISO/RTO

Cluster Study (Phase I/II)Current

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

Typical: 36–48 months (IR to IA)

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2030-09-01

Cross-source intelligence
Beta
Low confidence·5 sources·as of 2026-06-01
Expected COD
Sep 2030
From queue filing
Developer
Status
Active
Active — System Impact Study phase, no construction activity or financing announcements identified
Financing
Unannounced
Key milestones
IA executedApr 2020Most recent

Entered CAISO queue as project 1740, System Impact Study phase

source
About

The PUFF HYBRID SOLAR project is a proposed 203.6 MW hybrid solar and battery energy storage project in Kern County, California. The project consists of 101.8 MW of solar generation paired with 101.8 MW of battery storage. It is located within the CAISO region and is interconnected to the PGAE utility grid at the Arco 230 kV point of interconnection.

The project, identified as CAISO-1740 in the CAISO interconnection queue, entered the queue on April 15, 2020. Its proposed commercial operation date is September 1, 2030. The project's interconnection status is currently in the System Impact Study phase.

Generated from interconnection queue and public data sources

Development Risk

Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.

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See the full development-risk decomposition for this project.

P(COD by stated date)
Withdrawal probability vs cohort
IA cluster risk
Project Details

State

CA

County

Kern

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

Utility

PGAE

Entity

CAISO

Service Type

NRIS

Point of Interconnection

Arco 230 kV

Data Source

LBNL + Live

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.

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See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Technology
Solar101.8 MW · 50%
Battery101.8 MW · 50%
Generation Forecast

Forward generation outlook — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

P50 conditioned on COD
Capacity factor vs cohort
Weather + policy scenarios
Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

Revenue conditioned on COD
Financing close risk
Cohort DSCR comparison
Market Context
Approximate
ISO / RTO
CAISO
Trading Hub
TH_ZP26_GEN-APND
Hub Confidence
MEDIUM
Nearest Node (Estimated)
AGRICO_7_B1
POI Substation
Agrico

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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InfraSure platform

Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.