Notrees Windpower
Ector County
Overview
- Generation / storage
- 188.5 MW total / 24 MWh storage
- Reported plant capacity and configuration.
- Technology
- Wind + battery storage
- Primary generation technology.
- Registry anchor
- Plant 56961
- Ector County · ERCOT
- Storage duration
- 0.7 hours
- Battery subsystem rating.
- Operating status
- Operating
- Notrees Windpower Hybrid is operating.
- Commercial operation
- April 2009
- Best-supported operating milestone.
- Resource stack
- 3 resources
- NWF_ESR1 · NWF_NWF1 · NWF_NWF2
Infrastructure record
- Operator
- Deriva Energy
- Mapped facility footprint
- Mapped infrastructure footprint
Mapped infrastructure geometry associated with this asset.
- In service
- 2012-12
Profile
- Grid role
- Utility-scale wind generation in ERCOT's energy-only market.
- Physical build
- Notrees Windpower Hybrid (EIA Plant 56961) is a hybrid wind + battery site comprising multiple wind turbine strings and an on-site battery energy storage system: 55 Vestas V82 turbines (1.65 MW each), one Vestas 1-V90 experimental turbine (≈1.86 MW), 40 GE 1.5-MW turbines, and a 36 MW / 24 MWh Xtreme Power Dynamic Power Resource composed of 24 Dynamic Power Modules (each 1.5 MW / 1.0 MWh) with one Power Unit (PCS) per module. The DPR modules were installed inside a building (not in shipping containers) on site.
Structured profile
- Reported capacity
- 153 MW wind + 36 MW storage
Separate operating technologies
- Energy
- 24 MWh
0.7-hour storage duration
- Operating status
- operating
Notrees Windpower Hybrid is operating.
- Location
- Ector County
ERCOT
- Asset role
- wind
Generation and physical site
EIA plant 56961 · Inventory for Sep 2026.
Reported operating nameplate by technology
- Battery storage
- 36 MW
- Wind
- 152.5 MW
Generator records (3)
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| BATT | Batteries | Operating | 36 | 13.6 |
| GE | Onshore Wind Turbine | Operating | 60 | Unknown |
| VESTA | Onshore Wind Turbine | Operating | 92.5 | Unknown |
Mapped facility footprint
Mapped infrastructure geometry associated with this asset.
Related assets
Similar plants ranked by technology, capacity, and distance.
Units and generators
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| BATT | 36 MW 36 MW summer | Batteries BA | Dec 2012 | Operating |
| GE | 60 MW 60 MW summer | Onshore Wind Turbine WT | Apr 2009 | Operating |
| VESTA | 92.5 MW 92.5 MW summer | Onshore Wind Turbine WT | Apr 2009 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 152.5 MW
- Onshore Wind Turbine
- National rank
- #436
- of 1,374 operating peers
- TX rank
- #143
- of 230 operating peers
Monthly generation
Download CSVLatest 12 months
217 GWh
Reported net generation
Latest report
Jul 2026
EIA-923 monthly filing
2025 capacity factor
14.4%
Using current reported nameplate capacity
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
ERCOT public disclosuresRelated parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
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AssetOwner / operator
Parties and identifiers
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- DOE grant announced / Duke match announcedSource
Duke Energy announced plans in late 2009 to match a $22 million grant from the U.S. Department of Energy (ARRA) to support installation of large-scale batteries at the Notrees wind site.