Model resolution

This page explains how spatial (geographic) and temporal (time) resolution impacts modelling results.

Spatial resolution (geographical detail)

Models can represent different geographical areas.

National level

Models the entire country as a single point or “node.”

Sub-national or nodal level

Divides the country or region into multiple interconnected zones or “nodes” (e.g., states, islands, or distinct grid areas), enabling the modelling of electricity flows between them.

Scenario Builder currently lets you select from predefined regions or countries, with the level of spatial detail clearly described for each.

Temporal resolution (time detail)

The models consider how energy supply and demand change over time.

Modelling horizon

Typically spans from a base year (e.g., 2023 or 2024) to a future year (e.g., 2050 or 2060).

Time slices

To manage computational complexity - especially in long-term Capacity Expansion models - a year is often represented using a set of “representative days” or “time slices.” For example, a typical setup might use 32 time slices: 4 seasons × 2 day types (weekday/weekend) × 4 parts of the day (morning peak, midday, evening peak, overnight).

Hourly detail

For Unit Dispatch models focusing on a single year’s operation, full hourly (or even sub-hourly) resolution is often used to capture variability more accurately.

Scenario Builder currently allows you to choose between low (1 time slice) and medium (32 time slices) temporal resolution, depending on your analysis needs.