CMA Clears E.ON SE's Acquisition of OVO Energy After Phase 1 Merger Inquiry
The Competition and Markets Authority has cleared the anticipated acquisition by E.ON SE (through E.ON UK Limited) of OVO Energy Ltd. The CMA issued an invitation to comment on 8 July 2026, formally launched its Phase 1 merger inquiry on 2 September 2026, and announced on 1 October 2026 that it had cleared the transaction, concluding its review without referring the deal to a Phase 2 investigation. The full text of the clearance decision is due to be published shortly. The case had tested whether combining the two energy suppliers would give rise to a substantial lessening of competition under the Enterprise Act 2002, in a retail energy market already under heightened political and regulatory scrutiny given elevated household bills.
Why this matters
Retail energy consolidation carries acute political risk given the cost-of-living backdrop and record household energy bills, so a clearance delivered within four weeks of the formal Phase 1 inquiry opening is itself notable: it signals the CMA did not find a realistic prospect of a substantial lessening of competition from combining the two suppliers' customer bases. The CMA's decision, announced 1 October 2026, closes the case at Phase 1 with no Phase 2 referral and no structural remedies process. The clearance still carries interpretive value for the sector: it suggests the CMA judged remaining competitor choice and switching dynamics sufficient to proceed without further scrutiny, a precedent for further consolidation in a market where several mid-tier suppliers have exited since 2021.
On the Ground
With the deal cleared, the legal work shifts from merger-filing strategy to completion: finalising conditions precedent, closing mechanics, and integration planning for the acquirer and target. Firms that advised third parties or made competition submissions during the review will brief clients on what the clearance means for the wider retail energy market. A trainee would be expected to review the CMA's published clearance decision once available, update the client's merger precedent tracker with the outcome, and draft a client alert comparing this clearance to past CMA decisions in retail energy mergers.
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“Why did the CMA clear E.ON's acquisition of OVO Energy at Phase 1 rather than referring it to an in-depth Phase 2 investigation?”
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