SPIKES PEAK SOLAR (CAISO-1958) — Project Summary

Queue ID
CAISO-1958
Capacity
317.5461 MW
Technology
Solar+Battery
Status
active
Location
Merced, CA
Region
CAISO
Developer
IA Status
IA Executed

SPIKES PEAK SOLAR

CAISO-1958BetaActiveSolarBatteryCAISOLBNL + Live

317.546 MW hybrid in Merced, CA · In queue since April 2021 · Proposed COD October 2029

BA: CISOISO/RTO: CAISONERC: WECCRC: RCW

317.546 MW

Capacity

2

Components

Solar + Battery

5y 3m

In Queue

IA Executed

IA Phase

Signed Mar 2025

Interconnection

Queue → IA

3y 11m

IA → COD

4y 7m

Total Duration

3y 11m

Study Phase

C14

Construction75%
Queue EntryApr 15, 2021

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 AgreementMar 6, 2025

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2029-10-18

Cross-source intelligence
Beta
Medium confidence·4 sources·as of 2026-06-01
Expected COD
2029
From queue filing
Developer
Status
Active
Active — environmental review initiated June 2025, NOP scoping meeting held, IA executed March 2025
Financing
Unannounced
Key milestones
IA executedMar 6, 2025

Interconnection Agreement executed with CAISO

source
Permit approvedJun 2025

Notice of Preparation filed with CEQAnet for environmental review

source
COD targetOct 18, 2029Most recent

Proposed commercial operation date per CAISO queue

source
About

The SPIKES PEAK SOLAR project is a proposed 317.55 MW hybrid solar and battery energy storage development in Merced County, California. The project, located within the CAISO region and interconnected with PG&E, consists of a 158.98 MW solar array coupled with a 158.57 MW battery energy storage system. It is listed in the CAISO interconnection queue as project CAISO-1958, with an entry date of April 15, 2021.

The proposed commercial operation date for SPIKES PEAK SOLAR is October 18, 2029. The project's interconnection status is currently in the System Impact Study phase. Recent news coverage indicates the project has been featured in at least five news articles related to grid infrastructure.

Generated from interconnection queue and public data sources

Development Risk

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.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Financing close probability
EPC + tax-equity counterparty
Project Details

State

CA

County

Merced

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

Utility

PGAE

Entity

CAISO

Service Type

NRIS

Point of Interconnection

Quinto 230 kV

Data Source

LBNL + Live

Risk Analytics

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.

Available on the InfraSure platform

See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Technology
Solar158.978 MW · 50%
Battery158.568 MW · 50%
Generation Forecast

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.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

10-year P50 forecast
First-year output estimate
Weather + policy scenarios
Financial Forecast

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.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

10-year revenue projection
First-year DSCR
Financing close risk
Market Context
Approximate
ISO / RTO
CAISO
Trading Hub
TH_ZP26_GEN-APND
Hub Confidence
MEDIUM
Nearest Node (Estimated)
2C577C1_7_N001
POI Substation
Quinto Substation

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