To ask the Secretary of State for Business, Energy and Industrial Strategy, whether his Department has made an estimate of the number and proportion of energy suppliers selling green tariffs that buy 100 per cent renewable power from renewable generators, rather than purchasing second-hand certificates certifying a renewable energy purchase.

Supplier procurement strategies for energy and related certificates are a commercial matter and the Government does not have visibility over which companies are utilising the secondary trading of Renewable Energy Guarantees of Origin (REGO) certificates to support their green electricity tariff offerings.