On the basis of a report by the Comptroller and Auditor General, in July 2022 we took evidence from the Department for Business, Energy & Industrial Strategy (the Department) and the Office of Gas and Electricity Markets (Ofgem) on the regulation of energy suppliers.1 This report is based on evidence collected up to July 2022 and does not take into account September’s announcements of an Energy Price Guarantee to support UK households, or the Energy Bill Relief Scheme to support UK businesses.2 Our snapshot assessment of Ofgem’s regulatory approach and capability still applies, however.