The DUH offer, consisting of nine A4 pages and signed by DUH CEO Jürgen Resch, is available to the digital media company Table.Media.

The offer is from December 2016. The campaign was titled “Clean air through clean engines.” According to information from Table.Media, there were personal negotiations between the DUH and the gas association before the presentation of the document. In the end, the association decided not to finance the campaign. Upon request, the DUH confirmed: “At the end of 2016 we sent Natural Gas Info a summary of the 'Clean Air through Clean Engines' project, together with a list of the expected costs of this three-year project.”

Payments distributed between the years 2017 to 2019

The offer provides an insight into how the environmental partnership works. “For the execution of the planned activities, we calculate a financial expense of 750 thousand euros in 2017, 700 thousand euros in 2018 and 650 thousand euros in 2019,” the letter says. And further: “The annual financial support must be transferred to the DUH in two equal parts on February 1 and August 1 of each year.”

The DUH speaks of a “campaign” in several places. He says, for example: “The campaign is supported by various vehicle measurements, technical discussions, public relations work and political work on natural gas as a clean driving alternative in the transport sector.”

Overall, this approach raises doubts that the association actually only pursues charitable purposes.