Research reveals only around 40 of the 355 suppliers they surveyed offered renewable electricity tariffs. However, out of those 40 suppliers, some don’t actually generate renewable electricity themselves, or don’t buy renewable electricity directly from generators.
Instead, they’re buying Renewable Energy Guarantees of Origin (REGO) certificates. These can be bought from renewable energy generators for as little as £1.33 per customer a year and allow suppliers to say their customer’s tariff is 100% renewable. This has led to concerns that it’s too easy for energy suppliers to ‘greenwash’ their tariffs.
For example, one supplier bought just 1% of their energy directly from generators… and then used REGOs to top up and reach 100%.