Commission européenne, DG  COMP MERGER REGISTRY, 1049 Bruxelles, BELGIQUE  
Europese Commissie, DG COMP MERGER REGISTRY, 1049 Brussel,  BELGIË  
 
Tel: +32 229- 91111. Fax: +32 229 -64301. E -mail: COMP -MERGER -REGISTRY@ec.europa.eu.  
  EUROPEAN COMMISSION  
Brussels,  11.01.2021 
C(2021)  189 final  
PUBLIC VERSION 
To the notifying parties  
Subject : Case M. 9956 – DTC / CEPCON / HORNSEA ONE OFTO  
Commission decision pursuant to Article 6(1)(b) of Council Regulation 
(EC) No  139/20041 2 and Article 57 of the Agreement on the European 
Economic Area3  
Dear Sir or Madam,  
1. On 9 December 2020, the European Commission received notification of a proposed 
concentration pursuant to Article 4 of the Merger  Regulation by which the 
undertakings Diamond Tr ansmission Corporation Limited (“DTC”, United Kingdom) , 
ultimately controlled by Mitsubishi Corporation (“Mitsubishi”, Japan ) and Chubu 
Electric Power Company Netherlands B.V. (“CEPCON”, the Netherlands), ultimately 
controlled by Chubu Electric Power Co., Inc (Japan), acquire within the meaning of 
Article 3(1)(b) of the Merger Regulation joint control over the whole of the 
undertaking Hornsea One OFTO (United Kingdom)  by way of purchase of shares .4 
2. The business activities of the undertakings concerned are:  
− for DTC: a holding company, integrating Mitsubishi’s investment activities in the 
transmission section. Mitsubishi is a global trading company with activities 
related to energy, metals, machinery, chemicals, food and general merchandise , 
− for CEPCON : holding Chubu’s overseas projects. Chubu is a multi -energy 
services group with activities related to electric utility and related enterprises, gas 
                                                 
1 OJ L 24, 29.1.2004, p. 1 ( the ‘Merger Regulation ’). With effect from 1 December 2009,  the Treaty on 
the Functioning of the European Union ( ‘TFEU ’) has introduced certain changes, such as the 
replacement of ‘ Community ’ by ‘Union ’ and ‘common market ’ by ‘internal market ’. The terminology 
of the TFEU will be used throughout this decision.  
2  For the purposes of this Decision, although the United Kingdom withdrew from the European Union as 
of 1 February 2020, according to Article 92 of the Agreement on the withdrawal of the United 
Kingdom of Great Britain and Northern Ireland from the European Union and the European Atomic 
Energy Community (OJ L 29, 31.1.2020, p. 7), the Commission continues to be competent to apply 
Union law as regards the United Kingdom for administrative procedures which were initiated before the 
end of the transition period.  
3  OJ L 1, 3.1.1994, p.  3 (the ‘EEA Agreement ’). 
4  Publication in the Official Journal of the European Union No C 437, 18.12.2020 , p. 22. 

 
2 supply and thermal storage brokerage, on- site energy businesses, overseas 
consulting and investment, real estate ma nagement services and IT services, 
− for Hornsea One OFTO : owning and operating the transmission network for the 
Hornsea One offshore windfarm.  
3. After examination of the notification, the European Commission has concluded that 
the notified operation falls within the scope of the Merger  Regulation and of 
paragraph 5 (b) of the Commission Notice on a simplified procedure for treatment of 
certain concentrations under Council Regulation (EC) No  139/2004.5 
4. For the reasons set out in the Notice on a simplified procedure, the European 
Commission has decided not to oppose the notified operation and to declare it 
compatible with the internal market and with the EEA Agreement. This decision is 
adopted in applicat ion of Article 6(1)(b) of the Merger  Regulation and Article 57 of 
the EEA Agreement . 
For the Commission  
 
 
(Signed)  
Olivier GUERSENT  
Director -General  
                                                 
5  OJ C 366, 14.12.2013 , p. 5 .