Query
Butt Valley
Type
Entity Briefing
Entity
Butt Valley
Generated
2026-10-08T02:38:43.748Z

Briefing on Butt Valley

Entity Briefing
Generated Oct 8, 2026·Dataset freshness not reported
40 MW
Capacity
Operating
Current status
1958
Operating since
1
Generators
42.4%
Capacity factor
149 GWh
Annual generation
Briefing/plantOperating

Butt Valley is a 40 MW Conventional Hydroelectric asset in CAISO (California), currently Operating.

Butt Valley is reported in California since 1958 under Pacific Gas & Electric Co.. Available operating and financial measures include 42.4% capacity factor and 149 GWh annual generation; $2210/kW reported CapEx.

Location
Plumas, California
Technology
Conventional Hydroelectric
Owner / parent
Pacific Gas & Electric Co.
Operator
Pacific Gas & Electric Co.
Grid
CAISO (California)
Plant ID
221

What stands out

1

Butt Valley is a 40 MW Conventional Hydroelectric asset in California with status Operating.

2

Latest annual operating measures report 42.4% capacity factor and 149 GWh annual generation.

3

Available financial measures include $17.5/MWh OpEx, $2210/kW CapEx.

Market and operating context

ISO / market
CAISO (California)
Balancing authority
California Independent System Operator
NERC region
WECC
State rank
#72 of 247
National rank
#343 of 1,462

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.