Query
Mammoth G3
Type
Entity Briefing
Entity
Mammoth G3
Generated
2026-10-11T21:54:00.150Z

Briefing on Mammoth G3

Entity Briefing
Generated Oct 11, 2026·Dataset freshness not reported
15 MW
Capacity
Operating
Current status
1990
Operating since
3
Generators
78.3%
Capacity factor
103 GWh
Annual generation
Briefing/plantOperating

Mammoth G3 is a 15 MW Geothermal asset in CAISO (California), currently Operating.

Mammoth G3 is reported in California since 1990 under Ormat Nevada Inc. Available operating and financial measures include 78.3% capacity factor and 103 GWh annual generation; $2851/kW reported CapEx.

Location
Mono, California
Technology
Geothermal
Owner / parent
Ormat Nevada Inc
Operator
Ormat Nevada Inc
Grid
CAISO (California)
Plant ID
10479

What stands out

1

Mammoth G3 is a 15 MW Geothermal asset in California with status Operating.

2

Latest annual operating measures report 78.3% capacity factor and 103 GWh annual generation.

3

Available financial measures include $2851/kW CapEx.

Market and operating context

ISO / market
CAISO (California)
Balancing authority
California Independent System Operator
NERC region
WECC
State rank
#29 of 32
National rank
#61 of 69

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.