CAISO (California) Hourly Actual and Forecast Demand
Hourly consolidated demand data for actual and forecast values for CAISO trade areas and regions

Applications
- Short term commitments (forecast) of demand
- Seasonal average and distribution of actual demand and forecast errors
- Historical trade area and regional load analysis
DOCUMENTATION
CAISO (California) Hourly Actual and Forecast Demand
Overview
This data product offers hourly actual and forecast demand in California's Transmission Access Charge Areas (TAC) and Balancing Authority Areas.
Electricity demand is measured in kilowatts (kW) and represents the rate at which electricity is consumed. Meeting the growing demand for energy in a safe and environmentally responsible manner is a key challenge and a reliable grid operation is dependent on adequate supply and flexible resources.
TAC - EIM Coverage
This product provides hourly actual and forecast demand in CAISO TAC (Transmission Access Charge) areas and EIM (Energy Imbalance Market) regions:
Type | Code | Name |
---|---|---|
EIM | AZPS | Arizona Public Service |
EIM | BANCSMUD | BANC/SMUD |
EIM | BCHA | Powerex |
EIM | IPCO | Idaho Power |
EIM | NEVP | NV Energy |
EIM | PACE | PacifiCorp East |
EIM | PACW | PacifiCorp West |
EIM | PGE | Portland General Electric |
EIM | PSEI | Puget Sound Energy |
EIM | SCL | Seattle City Light |
EIM | SRP | Salt River Project |
TAC | CA ISO-TAC | California ISO - TAC |
TAC | MWD-TAC | The Metropolitan Water District of Southern California - TAC |
TAC | PGE-TAC | Portland General Electric - TAC |
TAC | SCE-TAC | Southern California Edison - TAC |
TAC | SDGE-TAC | San Diego Gas & Electric - TAC |
TAC | VEA-TAC | Valley Electric Association - TAC |
Metric Coverage
For each regional or TAC, this product provides:
- Actual Demand
- Day Ahead Demand
- 2 Days Ahead Demand
- 7 Days Ahead Demand
Data Collection Methodology
- Data is cleansed and organized to provide a ready for analysis dataset
- Both historical and current dates of operations are aggregated
- Actual and forecast demands are aggregated
- All date and hours are quality checked for consistency and completeness
- Data updates from CAISO every day
California Independent System Operator (CAISO) is a non-profit Independent System Operator serving California. It oversees the operation of California's bulk electric power system, transmission lines, and electricity market generated and transmitted by its member utilities.
Related Data Products
Key Features
- Includes hourly actual and forecast demand
- Updated daily at 5:00 PM ET
- Historical data goes back to 2016
- Covers all TAC Areas and EIM regions
Data Provider
Alta Bering
Until a few decades ago majority of us were employed in real world businesses. Alta Bering came out of a history of production technology and reconciled it with sophisticated algorithmic math, an after-thought in enterprise system functionality.We believe efficiency is key to mitigating scarcity economics. In the early 2000s, we set our sights on helping companies achieve higher efficiency and growth, not just growth.Today we enable advanced prescriptive analytics for data scientists and enterprise cloud platforms. Our goal is to help business analysts step up to corporate responsibility.Contact us for more about how we deliver our predictive analytics consulting to large and medium sized clients.