Solar potential cadastreSolarkataster
SolarkatasterSolar potential cadastre
A WMS API from the city of Aachen providing model-based data on expected solar irradiation across the municipality. It is intended to give building owners initial, non-binding orientation on solar potential for their properties. The values are computed model results rather than exact measurements, and may deviate from actual conditions found in later, more detailed technical assessments. The service is accessed through a standard Web Map Service interface following the OGC GetCapabilities specification, allowing integration into GIS applications for visualizing solar potential across the city area.Das Solarkataster informiert über die zu erwartende Sonneneinstahlung; es dient Gebäudeeigentümern zur Orientierung. Bei den Daten handelt es sich um Modellergebnisse, die einer unverbindlichen Erstinformation dienen und nicht um exakte Messdaten. Die errechneten Werte können von denen der letzte...
Trust score
How is this computed?Weighted across five axes. Tap a ring for what it measures.
Data schema (21 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| wkb_geometryWkb geometry | geometry | Geometric shape of the roof surface.Geometric shape of the roof surface. |
| gid | int | Internal record identifier.Internal record identifier. |
| flaechenid | string | Unique identifier of the roof surface area.Unique identifier of the roof surface area. |
| gebaeudeid | string | Unique identifier of the building.Unique identifier of the building. |
| richtung | double | Orientation (azimuth) of the roof surface in degrees.Orientation (azimuth) of the roof surface in degrees. |
| neigung | double | Slope/tilt angle of the roof surface in degrees.Slope/tilt angle of the roof surface in degrees. |
| flachdach | string | Indicates whether the roof is a flat roof.Indicates whether the roof is a flat roof. |
| flaeche2d | double | Roof surface area projected in 2D, in square meters.Roof surface area projected in 2D, in square meters. |
| flaeche3d | double | Actual roof surface area in 3D, in square meters.Actual roof surface area in 3D, in square meters. |
| relenergie | double | Relative solar energy yield per unit area.Relative solar energy yield per unit area. |
| absenergie | double | Absolute solar energy yield for the roof surface.Absolute solar energy yield for the roof surface. |
| renergieov | double | Relative solar energy yield without shading obstructions.Relative solar energy yield without shading obstructions. |
| aenergieov | double | Absolute solar energy yield without shading obstructions.Absolute solar energy yield without shading obstructions. |
| minderung | double | Percentage reduction in energy yield due to shading.Percentage reduction in energy yield due to shading. |
| minrenergi | double | Minimum relative solar energy yield estimate.Minimum relative solar energy yield estimate. |
| maxrenergi | double | Maximum relative solar energy yield estimate.Maximum relative solar energy yield estimate. |
| ertrag | double | Estimated total annual solar energy yield in kWh.Estimated total annual solar energy yield in kWh. |
| co2einspar | double | Estimated CO2 emissions savings from solar use.Estimated CO2 emissions savings from solar use. |
| eignung_pvEignung pv | string | Suitability rating of the roof for photovoltaic installation.Suitability rating of the roof for photovoltaic installation. |
| eignung_stEignung st | string | Suitability rating of the roof for solar thermal installation.Suitability rating of the roof for solar thermal installation. |
| instalflch | double | Roof area suitable for installing solar panels, in square meters.Roof area suitable for installing solar panels, in square meters. |
Schema captured from wfs 22 days ago.
Query the data
Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.
Sample data (3 records)
Record 1gid: 4079 · ertrag: 3954.637
{
"gid": 4079,
"ertrag": 3954.637,
"neigung": 47.595,
"richtung": 269.998,
"flachdach": "nein",
"flaeche2d": 27.081,
"flaeche3d": 40.158,
"minderung": 21.423,
"absenergie": 29293.604,
"aenergieov": 37279.965,
"co2einspar": 2467.693,
"eignung_pv": "nicht geeignet",
"eignung_st": "nicht geeignet",
"flaechenid": "GTAID_GTAID_1245824880765_41545316_4079",
"gebaeudeid": "05334002010310053 001",
"instalflch": 0,
"maxrenergi": 783.028,
"minrenergi": 651.145,
"relenergie": 729.451,
"renergieov": 928.322
}Record 2gid: 4080 · ertrag: 3816.59
{
"gid": 4080,
"ertrag": 3816.59,
"neigung": 47.595,
"richtung": 89.998,
"flachdach": "nein",
"flaeche2d": 27.081,
"flaeche3d": 40.158,
"minderung": 22.04,
"absenergie": 28271.039,
"aenergieov": 36263.53,
"co2einspar": 2381.552,
"eignung_pv": "nicht geeignet",
"eignung_st": "nicht geeignet",
"flaechenid": "GTAID_GTAID_1245824880765_41545316_4080",
"gebaeudeid": "05334002010310053 001",
"instalflch": 0,
"maxrenergi": 751.131,
"minrenergi": 623.213,
"relenergie": 703.987,
"renergieov": 903.011
}Record 3gid: 4081 · ertrag: 3161.493
{
"gid": 4081,
"ertrag": 3161.493,
"neigung": 0,
"richtung": 180,
"flachdach": "ja",
"flaeche2d": 32.685,
"flaeche3d": 32.685,
"minderung": 30.685,
"absenergie": 23418.465,
"aenergieov": 33785.683,
"co2einspar": 1972.771,
"eignung_pv": "nicht geeignet",
"eignung_st": "nicht geeignet",
"flaechenid": "GTAID_GTAID_1245824880765_41537613_4081",
"gebaeudeid": "05334002020870073 c001",
"instalflch": 1.738,
"maxrenergi": 994.367,
"minrenergi": 446.899,
"relenergie": 716.486,
"renergieov": 1033.67
}Live sample captured at profiling time — values may have changed upstream.
Verification Status
Using the API
Query examples
curl -s 'https://geoserver.aachen.de/opendata/solar/wfs?service=WFS&version=2.0.0&request=GetCapabilities' -H 'Accept: application/json'List the feature types (layers) and supported operations.
Dataset
Volume & freshness
License
No license declared upstream.
Machine-readable & source
Embed this badge in a README or wiki — it always shows the latest verification state and quality tier.