REMIT is an EU-wide regulation still applicable in the UK, on wholesale energy market integrity and transparency. It provides a mechanism for reporting and preventing energy market abuse. 

REMIT provides a consistent EU-wide framework for wholesale energy market participants. It helps to give consumers, industry and other market participants confidence that wholesale energy prices are open, fair and competitive.  

Market participants have an obligation to publish ‘inside information’ in respect of businesses or facilities which they own or control (or are operationally responsible for) before they can trade on the wholesale energy markets.