BUTTONBUSH SOLAR 2
716.4 MW hybrid in Kern, CA · In queue since April 2021 · Proposed COD March 2032
716.4 MW
Capacity
2
Components
Solar + Battery
5y 3m
In Queue
IA Executed
IA Phase
Signed May 2025
Queue → IA
4y 1m
IA → COD
6y 10m
Total Duration
4y 1m
Study Phase
C14
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 18–30 months
Proposed COD: 2032-03-17
The BUTTONBUSH SOLAR 2 project is a proposed 716.4 MW hybrid solar and battery energy storage project in Kern County, California. The development project consists of 358.2 MW of solar photovoltaic generation paired with 358.2 MW of battery storage. The project is located within the CAISO region and is interconnected to the PG&E utility grid at the Midway 500 kV point of interconnection.
The project, identified by queue ID CAISO-1987, entered the CAISO interconnection queue on April 15, 2021. Its proposed commercial operation date is March 17, 2032. The project's interconnection status is currently in the System Impact Study phase. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
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.
See the full development-risk decomposition for this project.
State
CA
County
Kern
Grid Region
CAISO (California)
Market
ISO/RTO Member
Developer
—
Utility
PGAE
Entity
CAISO
Service Type
NRIS
Point of Interconnection
Midway 500 kV
Data Source
LBNL + Live
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.
See the full risk decomposition + scenarios for this project.
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.
See the full forecast + scenario decomposition for this project.
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.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- CAISO
- Trading Hub
- TH_SP15_GEN-APND
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- MIDWAY_1_N084
- POI Substation
- Midway 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.
Top solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top solar plant owners in the US
Data tables and metrics from the InfraSure database.
Top 10 solar states
Data tables and metrics from the InfraSure database.
Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
