On 13th December 2017, the Bulgarian Parliament voted in favour of power generation above 5 MW of installed capacity to offer supply of electricity only though stock exchange (i.e. IBEX).
The mandatory stock exchange participation applies with respect to transactions entered into the deregulated segment of the electricity market in Bulgaria. According to policymakers this is another stepping stone on the liberalization path. It will support stock exchange liquidity, a credible market reference price and fair competition.
The amendments have not been officially promulgated yet, though their entry into force has been scheduled for 1st January 2018.
Source: www.dgkv.com