Tanzanite Storage

Power plant · Storage

Key facts

Power plant · Storage Operating

Commissioned: 2025
Grid: 138 kV to Rayburn Country Elec Coop, Inc (ERCO)
Location: Henderson County, Texas
Operated by: Tanzanite Energy Storage LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory

Net generation MWh by year, 2025 to 2026

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All 4 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory

Attributes
Attribute	Value
Grid	Nerc region TRE Report year 2025 Grid voltage kv 138 Transmission owner Rayburn Country Elec Coop, Inc Balancing authority code ERCO Balancing authority name Electric Reliability Council of Texas, Inc.
Fuel burned (MMBtu), 2025	0
Net generation (MWh), 2025	-5,074
Balancing authority code	ERCO

Data notes (1)

Capacity factor, 2025 not shown: net generation -5074.0 MWh is not positive (the plant consumed at least as much as it produced over the year)

3 sources

Sources

EIA-860MOpen license · retrieved Nov 4, 2026
EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
EIA-860M Preliminary Monthly Electric Generator Inventory

Projects within 15 mi, nearest first.
Project	Kind	Away	MW
Forest Grove - Dodd Postponed	Solar + storage	7.1 mi	302
Mcgee Storage Postponed	Storage	10.5 mi	151.3
Brittlebush Solar and Battery Storage Postponed	Solar + storage	11.0 mi	800
Halyard Henderson Energy Center Postponed	Gas, combustion turbine	14.3 mi	464

Sources