This datasource includes a map of annual total Solar Radiation at a 0.1 x 0.1 degree (~9km x 9km) resolution, global. Daily Solar Radiation Flux data were taken from 'Agrometeorological indicators from 1979 to present derived from reanalysis (AgEra5)' and summed over the year for each grid point to produce these maps. Units are in kWh/m2, i.e. how many kilowatt-hours of energy the sun irradiates for every square meter of area.
Years
5 2020–2024
Layers
9 annual + statistical
Annual layers
5 single-year files
Statistics
4 p10 · stddev · mean · p90
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A coordinate picked at random from inside Osrednjeslovenska, Slovenia, with every year of total annual solar radiation published on this page.
Coordinate · 46.12, 14.82
Centre of Osrednjeslovenska, Slovenia
Total Solar Radiation · kWh/m² · dashed line: average (1,313 kWh/m²)
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One downloadable layer per year.
Mean across the full covered period.
Dry-year benchmark across the covered period.
Wet-year benchmark across the covered period.
Inter-annual variability across the covered period.
Longer history, additional frequencies and regional workflows are available through Demeter.
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Spain · Italy · Greece · Weekly · Base 100
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Demeter’s sunlight data covers Global, 2020–2024. Coverage can be inspected directly in the map viewer on this page, and a wider range of data on sunlight is available in the downloads section above. Longer history and wider coverage are available through the Demeter platform.
Downloads from this page are provided as the formats shown in the downloads section on this page. Every Demeter dataset is built to be legible to AI, so the quickest way to inspect one is to open it with Claude, ChatGPT or another AI platform. Datasets with a map component also open in GIS software, including the free open-source QGIS as well as ArcGIS. Numerical and tabular data is provided in Microsoft Excel-compatible formats such as XLSX and CSV.
Click any point in the map viewer on this page and Demeter returns the values at that location. For many datasets you can also use the location search below the viewer to look up a place by name and read its values. Neither needs GIS software, a download or an account.
Demeter updates sunlight data as new source data is published. The period currently published on this page is 2020–2024. Higher-frequency series, longer history and release notifications are available through the Demeter platform.
Demeter’s datasets are compiled from a wide range of proprietary, public and third-party sources. Where a Demeter dataset incorporates third-party data without substantial additional processing, that source is prominently attributed in the dataset description.
Yes. All Demeter data is standardised onto a common taxonomy, so sunlight can be compared and combined directly with every other Demeter dataset, across regions and across domains. The same conventions apply wherever you use the data — on this page, on the Demeter platform and through the Demeter MCP server.
Downloads from this page are made available free of charge, subject to appropriate citation. The Demeter platform provides access to all Demeter data across every domain in our coverage universe, and is primarily intended for institutional, corporate and large independent users. Access to our full data coverage is available via subscription and one-time purchases. Please enquire at [email protected] for more details.
When incorporating data from Demeter into your work or materials, please attribute us as Demeter, Demeter Data or demeterdata.ag. In charts, articles and model outputs, “Source: Demeter” with a link to this page is sufficient. For a formal reference, cite: Demeter (2020–2024) Sunlight. https://demeterdata.ag/resources/domain/sunlight.
Yes, and Demeter datasets are built for it. Download a file and open it directly in Claude, ChatGPT or another AI platform. To connect an agent or application to Demeter data live, point it at the Demeter MCP server at https://mcp.demeterdata.ag/mcp