Query
Mammoth G1
Type
Entity Briefing
Entity
Mammoth G1
Generated
2026-10-14T14:26:24.874Z

Briefing on Mammoth G1

Entity Briefing
Generated Oct 14, 2026·Dataset freshness not reported
10 MW
Capacity
Operating
Current status
1984
Operating since
2
Generators
67.9%
Capacity factor
60 GWh
Annual generation
Briefing/plantOperating

Mammoth G1 is a 10 MW Geothermal asset in CAISO (California), currently Operating.

Mammoth G1 is reported in California since 1984 under Ormat Nevada Inc. Available operating and financial measures include 67.9% capacity factor and 60 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
10480

What stands out

1

Mammoth G1 is a 10 MW Geothermal asset in California with status Operating.

2

Latest annual operating measures report 67.9% capacity factor and 60 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
#31 of 32
National rank
#66 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.