Features

Inclined surface and horizon shading

Radiation parameters can also be provided for inclined surfaces. When using the API, users can specify both the inclination angle and azimuth of the desired plane. The irradiance on the inclined surface can then be retrieved using the parameters GTI, DTI and BTI (global, diffuse and direct tilted irradiance).

This functionality allows for more accurate modeling of solar energy yield for systems installed on tilted surfaces such as rooftops or PV panel arrays.

Furthermore, users can specify a horizon line to account for the shading of direct sunlight caused by artificial structures, natural topography or any other obstacle. This leads to more realistic irradiance values by incorporating local obstructions into the calculation of solar exposure.

To derive radiation for inclined surfaces, the same algorithms as for Climate data are applied.

PV Production

In addition to the radiation parameters, the PV Production is provided. Here, the reference yield for a standard module and standard inverter is calculated. As for the radiation parameters, the horizon line can be considered to calculate the PV Production with shading.