On the Octopus Super Green tariff, in addition to the 100% renewable electricity available with our standard plans (fuel mix found here), we also provide 100% carbon-neutral gas (100% offset - read why we don’t use green gas here). This involves offsetting the carbon emissions involved in the production of your gas. The renewable electricity we sell is backed by renewable certificates (Renewable Energy Guarantee of Origin certificates (REGOs)). See here for details on Renewable Energy Guarantee of Origin certificates and how these work. We offset the remaining emissions by supporting Renewable World’s Gold Standard certified carbon reduction projects. See here for more information on how we support tech poor communities with our offsetting programmes.