Non Domestic RHI Closure

The Non Domestic Renewable Heat Incentive (RHI) will close to new applicants on 31 March 2021.  This means that projects which use an eligible renewable heat source must be commissioned and a full application made to Ofgem before this date.

However, there was a tranche of Tariff Guarantees that were released by Ofgem on 13 October 2020 which allows certain technologies to be fully commissioned until 31 March 2022.

Tariff GuaranteesEnergy Source/Technology
12Solid Biomass Boiler
1Solid Biomass CHP
70Ground Source Heat Pump
14Water Source Heat Pump
0Shared Ground Loop*

*There are no longer any Tariff Guarantees for these technologies

For an energy source that has a Tariff Guarantee available, a Stage 1 application must be made to Ofgem before 31 March 2021.  Once a project has a Tariff Guarantee, it will have until 31 March 2022 to be commissioned and a full application to Ofgem submitted.

Get in Touch

Please get in touch if you would like to discuss any aspect of the Non Domestic RHI or if you have a general query.

We offer a dedicated specialist Energy and Sustainability service in addition to our core MEP Engineering design and would be pleased to get involved in the planning stages of a project to inform the design process as early as possible.

We can also offer a short presentation to your team on any aspect of Energy and Sustainability which may be of interest and which can be arranged at a time to suit you.

Contact Details:



T: 0131 225 7117 (Edinburgh Office)