Query
Sierra Estrella Energy Storage
Type
Entity Briefing
Entity
Sierra Estrella Energy Storage
Technology
battery
Generated
2026-10-17T14:43:37.159Z

Briefing on Sierra Estrella Energy Storage

Entity Briefing
Generated Oct 17, 2026·Dataset freshness not reported
250 MW
Capacity
Operating
Current status
2024
Operating since
1
Generators
-1.9%
Capacity factor
-42 GWh
Annual generation
Briefing/plantOperating

Sierra Estrella Energy Storage is a 250 MW Batteries asset in Arizona, currently Operating.

Sierra Estrella Energy Storage is reported in Arizona since 2024 under Sierra Estrella Energy Storage, LLC. Available operating and financial measures include -1.9% capacity factor and -42 GWh annual generation; $1361/kW reported CapEx.

Location
Maricopa, Arizona
Technology
Batteries
Owner / parent
Sierra Estrella Energy Storage, LLC
Operator
Sierra Estrella Energy Storage, LLC
Grid
Salt River Project
Plant ID
66334

What stands out

1

Sierra Estrella Energy Storage is a 250 MW Batteries asset in Arizona with status Operating.

2

Latest annual operating measures report -1.9% capacity factor and -42 GWh annual generation.

3

Available financial measures include $1361/kW CapEx.

4

Latest linked story: “Tesla Megapack project with huge energy storage is coming online: 'It's intended to provide resilience and additional capacity'” (The Cool Down, 2024-07-26).

Market and operating context

Balancing authority
Salt River Project
NERC region
WECC
State rank
#26 of 61
National rank
#122 of 994

Why it matters

For this asset, operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.