The Competition and Markets Authority (CMA) has opened an investigation into the merger between SSE Retail and Npower and whether it damages competition in the energy supply market.

It is inviting written representations to be made by 14 March.

The Authority aims to issue a decision by 26 April but that may be altered during the merger assessment process.

Follow the progress of the investigation 

Further reading

Login to read: Small and mid-range suppliers were responsible for nearly a quarter of all power sold to domestic customers in 3Q 2017. Big six companies’ share of power sales, on a MWh basis, dropped by nearly 5% on the previous year

Login to read: Is it new year, new energy company? Janet Wood and Annabel Andrews looked at which suppliers are changing their approach and who is winning the switching battle