Legislation to reduce tariff rates paid under the non-domestic Renewable Heat Incentive (RHI) came into effect on 1 April having received state aid approval from the European Commission last week.

The changes will mean that approximately 1,800 claimants will move to the tiered and capped tariff rates that were originally introduced for biomass boilers that became accredited after November 2015 and up to the scheme’s closure in February 2016.