In this episode, we look at the world of green energy certificates, which is getting more complex. Many companies and individuals on green energy tariffs want reassurance that they use 100% renewable energy, but with the current methods of matching supply and demand over a 12-month period this is not possible. Jon is joined by Toby Ferenczi. Toby is the CEO and co-founder of Granular Energy a company building software solutions for utilities and other stakeholders to access, manage and trade time-stamped energy certificates. Toby also founded EnergyTag, an industry-led, non-profit initiative to define and build a market for time-stamped energy certificates. Prior to his current role Toby was a VP at OVO Energy, a large green energy utility from the UK where he led international expansion. His previous roles include Managing Director at the demand-response company VCharge (acquired by OVO), and co-founder at UK solar company Engensa (acquired by Hanergy).