A solar suitability map at 90 m: a score out of 100 combining irradiance, flatness and proximity to built-up areas, grouped into five classes after excluding built-up land, water, forest and steep slopes.

Plus the best 50 sites as connected patches of 2 km² or more, and a per-delegation table of suitable area.

In short

6,170 km² rated excellent and 44,961 km² very good.

The best 50 sites total 4,659 km², the largest 2,562 km².

The delegations with the most suitable land are listed in the table.

Tunisia solar suitability: a score for every cell and the best 50 sites with their areas — Reduced-resolution preview with a watermark; the full-resolution map is in the package.

Who it is for

Renewable energy developers, consultancies, administrations, and energy and engineering students.

Method: what we add to the raw data

Irradiance comes from an open climate source on a one-degree grid, interpolated by inverse distance to 90 m cells: it suits comparison between areas, not plant-output estimation.
Slope is computed from the elevation model and land cover from a 10 m source.
Built-up land, water, forest and wetland were excluded, along with any slope above 10%.
The score out of 100 weights irradiance five tenths, flatness three and proximity to built-up areas two — weights stated explicitly so the buyer can re-weight them.
The best sites are connected patches of the excellent class of 2 km² or more, ranked by area.

Product details

What you get	2 spatial layers in GeoPackage, 3 GeoTIFF rasters, 2 CSV tables, lyrx and qml symbology for ArcGIS Pro and QGIS, a PNG map at 220 dpi, and an Arabic and English guide
Formats	GPKG, GeoTIFF, CSV, lyrx, qml, PNG
Coordinate system	WGS 84 (EPSG:4326)
Licence	Commercial use allowed for you and the organisation you buy for; no resale or redistribution
Delivery	A private download link valid for 24 hours, within 6 hours of payment confirmation
Package size	ZIP 70.0 MB
Personal data	The product contains no personal data

Spatial layers

best_sites — polygons, 50: Best sites
delegations_suitability — polygons, 265: Delegations with suitable area

Raster files (GeoTIFF)

D107_suitability_class.tif — 4,439 × 9,119, 90 m: Suitability class
D107_suitability_score.tif — 4,439 × 9,119, 90 m: Suitability score out of 100
D107_irradiance_relative.tif — 4,439 × 9,119, 90 m: Solar irradiance (relative indicator)

Tables

D107_best_sites.csv — 50 rows: Best sites table
D107_delegations_suitability.csv — 265 rows: Suitable area per delegation

Limitations

The irradiance grid is one degree (40 points over all Tunisia), so it is a relative indicator separating south from north, not neighbouring sites.
The score excludes the electricity grid, roads, land ownership and protected areas, all decisive in a real decision.
It does not replace on-site irradiance measurement or a grid-connection study.
The weights are a stated, disciplined judgement; changing them changes the ranking, which is why the factor layers are supplied separately.
Suitability covers solar only; wind would need hub-height wind data, which is not included.

FAQ

How long does delivery take?: Up to 6 hours after payment is confirmed.
How long does the download link last?: 24 hours, and it is renewed free on request.
Can I get a refund?: Digital products are not refundable once downloaded — unless the file is defective or does not match the description, in which case it is replaced or fully refunded.
What does the licence allow?: Commercial use is allowed for you and the organisation you buy for; resale or redistribution is not.

Tunisia solar suitability: a score for every cell and the best 50 sites with their areas