Solar Irradiance Grid Data for Victoria, Australia

Victoria, Australia, has its solar resource mapped on a 5 km x 5 km grid for five components of solar irradiance. The data includes annual averages and seasonal variations, reformatted from information supplied by Hydro Electric Corporation trading as Entura. The dataset was last updated on 2026-04 09 and is provided by the Department of Energy, Environment and Climate Action.

Use Cases

• Site selection for solar farms based on global horizontal irradiance (GHI) values.
• Modeling seasonal energy output for fixed-tilt panels using global irradiance on a north-facing plane (GTI).
• Optimizing tracker system performance using global irradiance on a 2-axis tracking normal plane (GNI).
• Analyzing concentrating solar thermal potential based on direct beam irradiance (DNI).
• Estimating diffuse light contributions to photovoltaic systems using diffuse horizontal irradiance (Diff).

Strengths

• Provides five distinct solar irradiance components (GHI, GTI, GNI, DNI, Diff) for detailed analysis.
• Data is mapped on a consistent 5 km x 5 km grid across the entire state of Victoria.
• Includes both annual average and seasonal variation values for temporal analysis.
• Methodology is documented in a publicly available report from Entura.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and dataset size are unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to data_gov_au, focusing solely on Victoria.

Provenance

Source

Department of Energy, Environment and Climate Action, data sourced from Hydro Electric Corporation trading as Entura.

Collection Method

Solar resource mapping and modeling, methodology detailed in an Entura report.

Time Range

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Freshness

Last updated 2026-04-09 06:36:07.117592; freshness should be verified.

Geography

Victoria, Australia.