Octopus Go Green is our electric vehicle tariff exclusively for Volkswagen, Audi, SEAT, Skoda or Cupra EV drivers. All our electricity tariffs are green but with Octopus Go Green, we've purchased the power directly from renewable generators through power purchase agreements rather than buying Renewable Energy Guarantees of Origin (REGO) certificates. Go Green rates will mirror Go rates so the only difference is how we purchase the electricity.