A GROUP representing RHI claimants are to appeal a court decision which cut tariffs for boiler owners.
The Department for the Economy (DfE) introduced temporary cost controls in April last year.
The department's move was subject to a legal challenge by the Renewable Heat Association (RHA), which represents more than 500 members who own 1,100 boilers.
In December, a judge found in favour of the DfE, but the RHA have now confirmed that they will lodge an appeal against that ruling.
Yesterday the organisation confirmed it would appeal the decision.
Meanwhile a separate hearing this week will decide whether the boiler owners should pay the full costs of the initial failed legal action.
The department has said it has begun plans "to seek approval" to extend the temporary cost controls for a further 12 months.
A DfE spokeswoman said: "It is the intention of the department to seek approval to extend the 2017 Regulations for up to a further year, until 31 March 2019.
"This will be a temporary measure to provide the department with the opportunity to develop and consult on the long-term arrangements needed for the lifetime of the scheme."
