IP-667
400 MW hybrid in Elmore, ID · In queue since August 2022 · Proposed COD December 2026
400 MW
Capacity
1
Components
Solar
3y 9m
In Queue
IA Executed
IA Status
Signed Mar 2024
Queue → IA
1y 7m
IA → COD
2y 9m
Total Duration
1y 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: 2026-12-31
The proposed IP-667 project is a 400 MW solar and battery hybrid development in Elmore County, Idaho. The project, under development by Martha Fields Energy Center, LLC, consists of a 400 MW solar component. It is interconnected to the Idaho Power Company via the BOBN_x0013_MPSN #2 230kV Line.
IP-667 entered the Idaho Power (IP) interconnection queue on August 17, 2022, with a proposed commercial operation date of December 31, 2026. The project's interconnection agreement was executed on March 7, 2024, and its current status is listed as suspended.
Generated from interconnection queue and public data sources
State
ID
County
Elmore
Grid Region
Mountain West
Market
—
Developer
Martha Fields Energy Center, LLC
Utility
Idaho Power Company
Entity
IP
Service Type
—
Point of Interconnection
BOBN_x0013_MPSN #2 230kV Line
Data Source
LBNL
- 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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