Cheapest tariff, £40 Cashback, good customer service & 100% renewable energy sources I have been with So Energy now for 9 months having found them on Money Supermarket. They offered the cheapest tariff by far. I saved about £500. Another incentive is that you will get £40 cashback if you use this link to switch - just remove the spaces before ‘so’ and ‘energy’ https://www. so. energy/r/SIJPMKQHH All their energy comes from renewable energy sources and customers get to vote for their desired source - wind, solar, hydro, biomass or tidal. Pretty cool! The online account management is really good too and I can manage most tasks without ever having to contact customer service. When I have had to contact customer service I have been able to speak to a real human without any effort - which is great in these days of automated systems.