I recently emailed the Frauenhofer Institute in Germany to get confirmation about the partnership that Envion announced with them.

Today, Mr. Hollinger from Frauenhofer answered, confirming that they are collaborating with Envion AG:
"You where contacting us to get information about our cooperation with the envion AG. Today, I can inform you that we added a short notice at our homepage news area: http://www.ise.fraunhofer.de/de/presse-und-medien/news/2017/fraunhofer-ise-untersucht-energieversorgungskonzepte-fuer-mobile-datenzentren.html"

It's a short text in German stating that Frauenhofer is researching energy supply concepts for mobile data centers in shipping containers which are used by Envion AG for cryptocurrency mining.