# The Renewable Heat Incentive Scheme (Closure) Regulations (Northern Ireland) 2026, Regulation 9: Conversion day


(1) The conversion day of an installation is the day following its final quarter day.
(2) An installation’s final quarter day is the last day of the quarterly period in respect of which a periodic support payment under the 2012 Regulations is payable falling between the period commencing on and including 1 June 2026 and ending on and including 31st August 2026.
(3) Where there is no final quarter day for an installation, conversion day is a day, during the period referred to in paragraph (2), that the Department considers appropriate.

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Source: https://www.legislation.gov.uk/nidsr/2026/9780338026613/regulation/9 (the official version)
Page: https://openlegislation.uk/draft-renewable-heat-incentive-scheme-closure-regulations-northern-ireland-2026/regulation-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.