Non-Domestic Renewable Heat Incentive Scheme Year 15 annual report
- Publication type:
- Transparency document
- Publication date:
- Scheme name:
- Non-Domestic RHI
The NDRHI annual report provides an update on scheme activity during Scheme Year 15 (SY15) covering the period 1 April 2025 to 31 March 2026.
The Non-Domestic Renewable Heat Incentive (NDRHI) scheme was launched in Great Britain in 2011 as a part of government efforts to reduce carbon emissions from heat in the non-domestic sector.
Under the NDRHI, businesses, public sector bodies, and non-profit organisations that installed low-carbon heating technologies could apply to receive quarterly payments for up to 20 years. These payments are calculated based on the amount of low-carbon heat generated or the volume of green gas injected into the gas grid. The NDRHI closed to most applicants on 31 March 2021, and all pathways to accreditation were closed by 31 March 2023. However, we will continue to service existing participants until the final accredited installation reaches the end of its eligibility period.
The report provides information on the installations accredited under the scheme; heat generation and payments made to participants. It also provides an overview of our monitoring compliance activity, which works to protect the scheme from fraud and error.
Highlights
- From the start of the scheme to March 2026, over 136.0 TWh has been generated by 22,638 accredited installations – this includes 11.2 TWh of heat and 417.3 million m3 of biomethane injected in SY15.
- Solid biomass boilers and ground source heat pumps remain the most common technologies, accounting for 77% and 12% of all accredited installations respectively.
- In total, support payments of £8.04 billion have been made, with SY15 marking the second year annual payments surpassed £1 billion - reaching £1.08 billion.
- 971 compliance investigations were completed during SY15, where we prevented the incorrect payment of over £1.7 million and identified almost £2.0 million for recovery. Through our debt recovery process, we successfully recovered almost £1.5 million in SY15 from completed compliance cases.
For those who wish to look at the data used in the report in more detail, a spreadsheet with this information is published alongside the report below.