Pianissimo BESS II
202 MW storage in Wise, TX · In queue since November 2024 · Proposed COD December 2027
202 MW
Capacity
1
Components
Battery
1y 6m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
3y 1m
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 not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2027-12-31
Pianissimo BESS II is a proposed 202 MW battery storage project located in Wise County, Texas. The project, developed by Pianissimo Storage, LLC, is interconnected within the ERCOT region under queue ID ERCOT-26INR0329. It entered the interconnection queue on November 19, 2024, and has a proposed commercial operation date of December 31, 2027. The project's interconnection status is currently in the Facility Study phase.
The proposed project consists entirely of battery storage, with a total capacity of 202 MW. The point of interconnection is Tap 138kV 685 LEO - 587 GREENWOOD. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Wise
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Pianissimo Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 685 LEO - 587 GREENWOOD
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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