Northern Ireland Non-Domestic Renewable Heat Incentive

The Northern Ireland Non-Domestic Renewable Heat Incentive (NI NDRHI) was designed to increase the uptake of renewable heat technologies and reduce carbon emissions.  

The scheme closed on 8 September 2026. 

Who runs the scheme 

The Department for the Economy is responsible for the policy, legislation and closure of the NI NDRHI scheme. 

Ofgem previously administered the scheme on behalf of DfE. Following scheme closure Ofgem’s role is limited to residual activity required to complete payments and related processes for eligible periods ending on or before 31 August 2026. 

Ofgem’s role 

Between 1 September 2026 and 30 November 2026, Ofgem will undertake limited residual activity only. This is to complete payments and related processes for quarterly meter reading periods ending on or before 31 August 2026. 

Ofgem will not process new activity relating to periods after 31 August 2026. 

Ofgem will cease remaining NI NDRHI administration activity by 30 November 2026. 

Questions about scheme closure, policy or activity after 31 August 2026 should be directed to DfE at rhimanagement@economy-ni.gov.uk. 

Final payments from Ofgem 

Ofgem will process final periodic support payments for quarterly meter reading periods ending on or before 31 August 2026, where the required data was submitted within the relevant deadline. 

Meter readings must be submitted within one calendar month of the date they were due. This is an absolute deadline. You will not receive payment for any meter readings submitted after the cut-off date of 1 calendar month after the date your meter reading(s) were due. 

Example deadlines

Using the Non-Domestic RHI Register after scheme closure  

Access to the Non-Domestic RHI Register remains available to participants. 

Due to essential maintenance being carried out, Non-Domestic RHI will be unavailable for use from:

• 24 September from 4pm to 8pm
• 5 October from 6pm to 10pm
• 6 October from 4pm to 9pm

Once the final periodic data submission for your installation has been processed, and any associated residual activity has been completed, your installation account will move to read-only status. 

This means: 

• You will continue to be able to view your installation account on the RHI Register 
• You will be able to view information associated with your installation, including previously submitted data and records 
• You will not be able to submit new data or amendments for that installation through the RHI Register 
• You will no longer receive automated periodic data submission reminder emails. 

These system changes will be introduced gradually and may not take effect immediately. 

Please do not submit activity relating to periods after 31 August 2026. Ofgem will not process it. 

For data, amendments or queries relating to periods after 31 August 2026, please contact DfE at rhimanagement@economy-ni.gov.uk. 
 

Contact us 

Contact Ofgem only for queries relating to residual activity, including: 

• Activity submitted to Ofgem on or before 31 August 2026 
• Final payments for eligible periods ending on or before 31 August 2026 

Tel: 0300 003 2289 
Email: rhi.enquiry@ofgem.gov.uk 

Contact the Department for the Economy for queries related to: 

• The closure of the NI NDRHI scheme  
• DfE’s new closure arrangements for eligible NI NDRHI participants  
• Policy or legislation relating to scheme closure  
• Activity relating to periods after 31 August 2026 

Tel: 02890 257 571 
Email: rhimanagement@economy-ni.gov.uk.