| Geography |
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States covered: California (most of)
Reliability region: Sub-region of the Western Electric Coordinating Council (WECC)] Balancing authorities: California ISO (CAISO), Sacramento Municipal Utility District (SMUD), Turlock Irrigation District (TID), Los Angeles Department of Water and Power (LADWP). Approximately 80% of demand in the CAMX subregion is within the area of the CAISO balancing authority. The portion of the CAMX area within Mexico is small. The remaining 20% of California’s load is managed primarily by municipal utilities and irrigation districts such as Los Angeles Department of Water and Power, the Sacramento Municipal Utility District, and the Imperial Irrigation District.
Balancing authorities: California ISO (CAISO), Sacramento Municipal Utility District (SMUD), Turlock Irrigation District (TID), Los Angeles Department of Water and Power (LADWP), and Comision Federal de Electricidad (CFE). [WECC balancing authority map
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Approximately 80% of demand in the CAMX subregion is within the area of the CAISO balancing authority. The portion of the CAMX area within Mexico is comparatively small. The remaining 20% of California's load is managed primarily by municipal utilities and irrigation districts such as the Los Angeles Department of Water and Power, the Sacramento Municipal Utility District, and the Imperial Irrigation District.
CAISO zones: NP-15, ZP-15, SP-15
| RTO/ISO | Back to Top |
- Energy market: three – settlement (day ahead, hour ahead, and real time). Spot market with locational marginal pricing.
- Ancillary services, and
- Financial Transmission Rights market
Market Monitor: Eric Hildebrandt, Director, Department of Market Monitoring
| Generation/Supply (CAISO only) | Back to Top |
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Marginal fuel type: natural gas
Generating capacity (summer 2006): 56,347 MW
Capacity reserve (summer 2006): 6,077 MW
Reserve margin (summer 2006): 12%
| Demand |
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All time peak demand: 50,270 MW (set July 24, 2006)
System peak loads declined in 2009, due in part to an economic recession and a generally mild summer.
Peak demand growth: -2.1% (2008-2009)
| 2006 | 2007 | 2008 | 2009 | |
|---|---|---|---|---|
| Summer Peak Demand (MW) | 50,085 | 48,490 | 46,814 | 45,809 |
| Source: Derived from FERC Form 714 | ||||
Load pockets: Humbolt, North Bay, Greater San Francisco Bay, Sierra, Stockton, Los Angeles Basin, and San Diego areas.
| Prices (CAISO only) |
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Annual Average Price (ISO Real-time)
NP-15:
2004: $38.35/MWh
2005: $54.35/MWh
2006: $43.40/MWh
2007: $54.91/MWh
2007: $71.01/MWh
2007: $34.57/MWh (Post MRTU 4/1/09 – 12/31/09)
SP-15:
2004: $39.47/MWh
2005: $55.52/MWh
2006: $46.89/MWh
2007: $54.91/MWh
2008: $69.56/MWh
2009: $34.35/MWh (Post MRTU 4/1/09 – 12/31/09)
| Interconnections/Seams |
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- Load serving entities within CAISO rely on Imports for approximately one-fourth of their annual energy needs.
Contact Information:
For questions regarding the material in the California section please contact our staff at: oversight@ferc.gov