SUNRISE BUTTE (CAISO-1667) — Project Summary

Queue ID
CAISO-1667
Capacity
150 MW
Technology
Solar+Battery
Status
active
Location
Imperial, CA
Region
CAISO
Developer
IA Status
IA Executed

SUNRISE BUTTE

CAISO-1667BetaActiveSolarBatteryCAISOLBNL + Live

150 MW hybrid in Imperial, CA · In queue since April 2019 · Proposed COD January 2027

BA: CISOISO/RTO: CAISONERC: WECCRC: RCW

150 MW

Capacity

1

Components

Battery

7y 3m

In Queue

IA Executed

IA Phase

Signed Oct 2024

Interconnection

Queue → IA

5y 6m

IA → COD

2y 3m

Total Duration

5y 6m

Study Phase

C12

Construction75%
Queue EntryApr 15, 2019

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 AgreementOct 8, 2024

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2027-01-18

Cross-source intelligence
Beta
Low confidence·4 sources·as of 2026-06-01
Expected COD
2027-01-18
From queue filing
Developer
Status
Active
Active — IA executed October 2024, targeting 2027 COD per interconnection agreement
Financing
Unannounced
Key milestones
IA executedOct 8, 2024

Interconnection Agreement executed with CAISO

source
COD targetJan 18, 2027Most recent

Proposed commercial operation date per CAISO queue

source
About

The SUNRISE BUTTE project is a proposed 150 MW hybrid solar and battery energy storage project located in Imperial County, California. Interconnecting to the Imperial Valley Substation at 230 kV, the project consists of solar generation paired with a 150 MW battery energy storage system.

The project is listed in the CAISO interconnection queue as queue ID CAISO-1667, with an entry date of April 15, 2019. The proposed commercial operation date is November 18, 2029, and the interconnection agreement has been executed. The project is actively listed in the queue and is within the service territory of SDGE.

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

Imperial

Grid Region

CAISO (California)

Market

ISO/RTO Member

Developer

Utility

SDGE

Entity

CAISO

Service Type

ERIS

Point of Interconnection

Imperial Valley Substation 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
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_SP15_GEN-APND
Hub Confidence
MEDIUM
Nearest Node (Estimated)
WESCAN_7_N002
POI Substation
Imperial Valley 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.