Solar API

The API can be used, for example, to enrich existing data records in your own systems (CRM) with solar potential data. An irradiation image and information on usable areas are available for each address. Such data can be used in the back office for better communication. Data exports are also possible, for example to launch marketing campaigns (online & offline). Due to the large and constantly growing range of functions, it is also possible to program your own applications, such as for lead generation. The API provides the data basis for this as well as profitability calculations.

In most cases, the API is requested with geocoordinates. A conversion from address to geocoordinates must be carried out one step in advance, for example with Google. However, it is also possible to call up the buildings directly at a later time using an internal ID or existing system configurations.

We have pre-calculated buildings in large areas of Germany and other European countries. This is possible if the required data (3D point clouds and cadastral data) is made available as open data by official bodies (authorities/offices). This is now (actually) mandatory in the EU. If a request is made in an area outside of pre-calculated data, we try to use data from third-party providers such as the "Google Solar API". Here we download the required data "on demand", process it and then carry out a roof detection and irradiation analysis. If no 3D data is available there either, we offer the use of the "no-data" API. In this case, the user manually defines one or more roof surfaces on which we then carry out a system design and profitability calculation. Only in this case does no shading analysis take place. All variants of the API offer the same range of functions as well as the same input and output format.

The API usually takes less than two seconds to respond. If an "on-demand" request has been triggered, the runtime depends on the size of the building. In this case, the first call takes around 30 seconds due to the necessary data download from Google and the detailed shading analysis. Each subsequent request then runs again at the usual speed, as this analysis only has to be carried out once. Individual optional functions, such as the automatic module placer, can extend the runtime.

Yes, the solar calculator is not dependent on the availability of data. It can be used in all areas. See also Data independence.

Yes, it is important that it is either laser scan data or high-resolution data (min. 4 points per square meter). We can also integrate Google Sunroof data for urban areas, which is purchased separately and passed on to you on a one-to-one basis.

The API is protected by basic auth, but can also be accessed with an API key. More information can be found in the API documentation (online, with test account).

The standard daily limit is 2500 requests, the minute limit is 30 requests. The limits can be increased on request.

We keep an eye on the credit packages and contact you when your credits run out.

Yes, in our HUB, our own backend, you can view the requests you have made and also make settings.

Yes, all PV hardware can be stored in our system and used for all calculations. This includes PV modules, battery storage systems, inverters, charging stations or even your own individual categories.

Yes, it is possible to store your own load profiles in the API (and then activate them using a shortcut) or to transfer them dynamically with each request. The complete profitability calculation is based on the selected load profile.

We offer the API in a pay-per-use license model. Various credit packages are available depending on the expected volume of requests. The costs per building depend on the size of the building and the package booked (the larger the package, the cheaper it is). Only the building is calculated, i.e. a new call with different calculation parameters, for example, does not generate any additional costs.

Yes, we offer you solutions for the entire sales channel - from the initial contact with potential customers (Solar lead generator) to the preparation of an individual offer (Offer Tool) and the signing of the contract by the customer.

The API is ready for use within 1-2 working days.

Yes, we will be happy to create a test account for you on request. This allows you to use the full range of functions for a small number of buildings.

Yes, there is a dedicated server that you can use separately from the live system.