Gnergy remains the only energy supplier to owe outstanding renewables obligation (RO) payments.
The Hampshire-based supplier was named as owing more than £680,000, following the late payment deadline of 31 October.
A final order issued in October compelled the company to make the outstanding payments by the late deadline. Ofgem has confirmed that the order remains in place and an update will be issued shortly.
Breeze Energy, which owed more than £486,000, was issued with a provisional order in October. This supplier ceased trading in December, with British Gas taking on its customers.
In December Ofgem revealed that almost £100 million in RO payments were owed by energy suppliers, many of which had already left the market.
As a result mutualisation is to be triggered for the second time in as many years.
In line with the RO orders, suppliers who discharged part of all of their obligation will be contacted to make quarterly payments to make up the shortfall, in proportion to their obligation.
In total, the relevant shortfall is £97.5 million.
Ofgem is unable to pursue enforcement action against suppliers which ceased trading before obligations became due but has previously said that it will seek to recover outstanding payments through the organisations’ administrators “where appropriate”.