IP-551
240 MW hybrid in Elmore, ID · In queue since April 2019 · Proposed COD December 2026
240 MW
Capacity
1
Components
Solar
7y 3m
In Queue
IA Executed
IA Phase
Signed Nov 2021
Queue → IA
2y 7m
IA → COD
5y 1m
Total Duration
2y 7m
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Construction pending
Typical: 18–30 months
Proposed COD: 2026-12-01
The proposed IP-551 project is a 240 MW solar and battery hybrid development in Elmore County, Idaho. The project, developed by Bennett Solar B LLC, consists of 240 MW of solar capacity. It is interconnected to the Idaho Power Company (IP) grid at the RTSN 230kV point of interconnection.
The project entered the IP interconnection queue on April 8, 2019, with a proposed commercial operation date of December 1, 2022. An Interconnection Agreement (IA) was executed on November 19, 2021, though the project's current status is listed as suspended.
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
ID
County
Elmore
Grid Region
Mountain West
Market
—
Developer
Bennett Solar B LLC
Utility
Idaho Power Company
Entity
IP
Service Type
NRIS
Point of Interconnection
RTSN 230kV
Data Source
LBNL
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
- MOUNTAIN_WEST
- Trading Hub
- MID-C
- Hub Confidence
- UNKNOWN
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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Ask about Project IP-551Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
