The start of the rules around the mandatory margining of bilateral derivatives which requires those caught to exchange initial and variation margin on bilateral derivatives, was initially set to start worldwide, for the largest banks, on 1st September 2016. However, the rules did not start in Europe and several other jurisdictions. This article on the DRS website discusses possible new start date of January 2017.
Following this date, the requirement to exchange variation margin will commence over the weeks following, for those caught (financial counterparties and non financial counterparties over the clearing threshold). The initial margin requirements will be phased in over the following years.
While many in energy and commodities are outside of the rules, since they are “NFC-“, some will become “FC” due to being required to set up a “regulated entity” under MiFID II due to the changes in the exemption rules of MiFID, requiring commodity traders to pass the Ancillary Activity test in order to remain outside of financial counterparty status.