API Documentation

The Energy Data API

Our database and the calculation of Heating & Cooling Degree Days and the data normalization are available via an API (Application Programming Interface). This interface allows energy managers, developers, and other projects to access individually calculated data.

To request data, you need a valid API key, which you will receive via our subscription service.



We have a wide variety of customers, and our API is used by them with a wide variety of systems: from professional EnMS platforms to in-house programming to Excel.

Of course, we can also provide technical support during the initial setup.

Watch this video now to see how effortlessly you can connect Microsoft Excel to our Degree Day database.

Test our API

You can also test our API service without any obligation!

Book one of our API subscriptions and test the full range of features. If you find that the service does not meet your expectations within 30 days, you can cancel the subscription without giving any reason and get the full purchase price back.

Book a degree day subscription now with 30-day money back guarantee!