Models
Deterministic models
Use the model query parameter on any /forecast endpoint to select a model.
Optimized optimized
Optimized optimized
Blends numerical and AI-powered weather models with proprietary methods for maximum accuracy. Inputs may change over time.
Horizon: 15 days | Updates: Hourly
Available for all metrics and types: regional, plant, county, LMP, and gas.
ISO Provided iso
ISO Provided iso
The ISO’s own published forecast, useful for direct comparison. Availability and regions vary by ISO.
Horizon: Varies | Updates: Varies
Available for regional demand, wind, solar, and outage only.
Climate Normal normal
Climate Normal normal
Historical-average baseline for assessing seasonal anomalies against current forecasts.
Horizon: 15 days | Updates: Daily
Available for regional demand, wind, solar, outage, and temperature.
Ensemble models
Ensemble models are accessed via the /ensemble endpoint using the model parameter. Each returns multiple forecast members representing a range of possible outcomes.
ECMWF IFS Ensemble euro_ens
ECMWF IFS Ensemble euro_ens
The ECMWF’s 51-member Integrated Forecasting System ensemble. Each member starts from slightly different initial conditions, producing a range of outcomes. Ensemble member forecasts are derived exclusively from this model and are not combined with any other weather models.
This is the default when no model parameter is specified on the ensemble endpoint.
Horizon: 15 days | Updates: Every 6 hours
Available for regional demand, wind, solar, outage, and temperature.
ECMWF EC46 euro_ec46
ECMWF EC46 euro_ec46
ECMWF’s extended-range ensemble forecast, reaching well beyond the standard ensemble horizon.
Horizon: 46 days | Updates: Daily
Available for regional demand, wind, solar, outage, and temperature.
ECMWF SEAS5 euro_seas5
ECMWF SEAS5 euro_seas5
ECMWF’s seasonal forecasting system. Provides multi-month outlooks for identifying long-term trends in demand, generation potential, and gas prices.
Horizon: 7 months | Updates: Monthly
Available for regional demand, wind, solar, outage, and temperature.
