SEMOpx is responsible for monitoring Day-Ahead and Intraday trading activity.

Our role in market surveillance

SEMOpx cooperates closely with the National Regulatory Authorities on market surveillance. Along with monitoring trading activity, we conduct investigations and report any suspicious activity to the relevant National Regulatory Authority. This promotes public confidence by ensuring a fair and transparent energy market for the benefit of all end consumers. 

SEMOpx has the power to request from any Member (whether or not that Member is itself suspected of an infringement) to provide any specified information which the SEMOpx Market Monitor considers relevant to the investigation. This includes providing details of the economic beneficiary of any Order, Transaction or Contract.

Upon request, any information provided to market surveillance will be treated as confidential.

Contact us

SEMOpx welcome feedback from Members or interested parties in relation to market surveillance at