Guarantee of Origin

The Guarantee of Origin (GO or GoO) is the tracking certificate regulated in the European Directive 2009/28/EC, article 15. The GO is further standardized via the European Energy Certificate System (EECS) provided by the Association of Issuing Bodies (AIB). The EECS makes trade, cancelation and use of GOs standardized across Europe. 

The GO  has no inherent price except for the price given to it by the supply and demand market.  The GO is the carrier of electricity attributes.