The UK's Competition and Markets Authority on Wednesday initiated an investigation into E.ON's plan to acquire Ovo Energy to assess the potential impact on energy market competition.
The merger will reportedly create a customer base of 9.6 million, potentially making the combined entity the largest energy supplier in the UK. German utility E.ON currently has 5.6 million customers, while British firm Ovo has 4 million.
The first phase of the investigation is set to end on Oct. 28, according to a government website. Subject to available information, the UK regulator said it may proceed to a second phase of the probe.
The companies earlier said that the deal was set to close in H2. They declined to comment on inquiries from.