Happy Dog Storage
60.16 MW storage in Milam, TX · In queue since June 2023 · Proposed COD April 2027
60.16 MW
Capacity
1
Components
Battery
2y 11m
In Queue
IA Executed
IA Status
Signed Dec 2024
Queue → IA
1y 6m
IA → COD
2y 4m
Total Duration
1y 6m
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2027-04-13
Happy Dog Storage is a proposed 60.16 MW battery storage project located in Milam County, Texas. The project, being developed by Rosula Solar LLC, is interconnected within the ERCOT region under queue ID ERCOT-25INR0442. It entered the interconnection queue on June 7, 2023, and has a proposed commercial operation date of April 13, 2027. The project's interconnection agreement was executed on December 16, 2024.
The interconnection point is Tap 345kV 3704 Hog Creek Switch _x0013_ 3687 Bell County East Switch. The project has been mentioned in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Milam
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Rosula Solar LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 345kV 3704 Hog Creek Switch _x0013_ 3687 Bell County East Switch
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
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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