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6th September, 2017

Latest RHI News – What does it all mean?

Effective from 31 July 2017, the Department for Business, Energy & Industrial Strategy (BEIS) introduced a change to the Domestic RHI Regulations to reflect the latest version of the Microgeneration Certification Scheme (MCS) installation standard for heat pumps.


Included in the regulations are:

  • Domestic
    • increases to biomass and heat pump tariffs in the Domestic RHI; the new tariffs are as expected
    • the introduction of heat demand limits for biomass and heat pumps in the Domestic RHI
  • Non-domestic
    • the alignment of the different tariffs available for small, medium and large biomass in the Non-domestic RHI with revised tiering for all sizes of plant.  This includes changing the tiering threshold from 15% to 35% of heat load for small and medium biomass and introducing a 35% threshold for large biomass; the new tariffs are as expected
  • Both schemes
    • the extension of expenditure and growth thresholds for the calculation of degression for both schemes for 31st October 2017, 31st January 2018, 30th April 2018 and any date after 30th July 2018, in anticipation of the thresholds being extended out to 2020/21 in other amendments to follow later this year.

Due to the introduction of these reforms there will be no degressions to tariffs on 1 October, with the next potential degressions to apply on 1 January 2018 and to be announced by 1 December. 

Detailed information and tariff tables can be found in the Ofgem Factsheet.


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Black Isle Renewables Ltd,
Culbo Road, Culbokie,
Dingwall, Ross-shire IV7 8JU
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01349 877 029