Query
Sienna Solar Farm
Type
Entity Briefing
Entity
Sienna Solar Farm
Generated
2026-10-09T16:35:37.266Z

Briefing on Sienna Solar Farm

Entity Briefing
Generated Oct 9, 2026·Dataset freshness not reported
400 MW
Capacity
Planned
Current status
2
Generators
Briefing/plantPlanned

Sienna Solar Farm is a 400 MW Batteries asset in CAISO (California), currently Planned.

Sienna Solar Farm is reported in California under 99MT 8me, LLC. Available operating and financial measures include $1544/kW reported CapEx.

Location
San Bernardino, California
Technology
Batteries, Solar Photovoltaic
Owner / parent
99MT 8me, LLC
Operator
99MT 8me, LLC
Grid
CAISO (California)
Plant ID
64632

What stands out

1

Sienna Solar Farm is a 400 MW Batteries asset in California with status Planned.

2

Available financial measures include $1544/kW CapEx.

Market and operating context

ISO / market
CAISO (California)
Balancing authority
California Independent System Operator
NERC region
WECC
State rank
#12 of 202
National rank
#68 of 994

Why it matters

For this asset in CAISO (California), 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.

Sienna Solar Farm — verified asset snapshot

FieldValue
LocationSan Bernardino, California
TechnologyBatteries, Solar Photovoltaic
Owner / parent99MT 8me, LLC
Operator99MT 8me, LLC
GridCAISO (California)
Plant ID64632
ISO / marketCAISO (California)
Balancing authorityCalifornia Independent System Operator