Obsolete!
This repo is no longer the one used for https://pvgisjson.com
The new repo can be found here: https://github.com/nagilum/pvgis
Photovoltaic Geographical Information System (PVGIS) API
Solar energy is one of the environmentally sustainable resources for producing electricity using photovoltaic (PV) systems. The main input data used in the planning process is solar radiation. The Europe JRC has an app online which you can use to calculate PV values, bus sadly they have no (good) API. That's where this website comes into play.
The PVGIS API provides a simple API endpoint which you can get the same values via JSON. The API and source code is freely available to use under the MIT license.
See pvgisjson.com for details on how to use the API.