I've been wondering from where has GESS sprung fully formed and financed. It seems there is a strong connection to European experience and perhaps finance. It appears GESS is a "licenced partner" of Biogest:
Biogest is an internationally active biogas plant manufacturer and operator with its headquarters in Austria and subsidiaries in the UK, France, US, Italy, Romania, Serbia and the Czech Republic. More than 150 biogas plant projects generating electricity or biomethane have been completed to date. Our reference plants are located in several European countries and the global market is served by licenced partners.
http://www.biogest.at/page/en/113/Biogest-develops-highly-efficient-biomethane-plants-in-Italy.html