On 7 November 2025, LCCC issued a Stakeholder Bulletin confirming the Nuclear RAB Interim Levy Rate and Total Reserve Amount for the Quarterly Obligation Period 1 January 2026 to 31 March 2026 as follows:
- Nuclear RAB Interim Levy Rate is £3.663/MWh
- Nuclear RAB Total Reserve Amount is £17,967,925.87
Suppliers receive formal notice to confirm this announcement. For further detail on LCCC’s calculations, please refer to the Nuclear RAB Levy Dashboards.
On the Settlement Data for Suppliers webpage, the Key Payment Figures for 2025/26 have been updated to include the Nuclear RAB Interim Levy Rate and Total Reserve Amount figures for Q1 2026.
Suppliers are required to maintain their Credit Cover requirement using the Nuclear RAB Interim Levy Rate applicable for the Quarterly Obligation Period.
The deadline for Suppliers to lodge sufficient Credit Cover is 5:00pm on 31 December 2025 using the ILR of £3.663/MWh .
We’d now like to provide some additional information to support this announcement. To help Suppliers we have provided the following useful Frequently Asked Questions (FAQs). LCCC have also published some Nuclear RAB FAQs on their website.
What is the process for lodging Credit Cover?
WP42 – Supplier CfD and Nuclear RAB Credit Cover provides details on the process for lodging Credit Cover including the Letter of Credit templates (p43-50) and the approved bank account details for cash Credit Cover (p17).
In order for Credit Cover to be considered.
- Cash amount must have been received in the relevant bank account;
- Valid Letter of Credit received electronically; and
- Received by 5:00pm on 31 December 2025
PLEASE NOTE: The bank account details, and Letter of Credit templates are different to those used for CfD Credit Cover.
On 17 July 2025 we hosted a webinar detailing the process for lodging Credit Cover under the Nuclear RAB scheme. The recording (timestamp 5:56), slide deck, and Q&A for the session are available to download.
How do I calculate my Nuclear RAB Credit Cover?
The minimum Credit Cover requirement is a Supplier’s metered volumes for 21 days reference period multiplied by the Interim Levy Rate. To help, we will first calculate your Credit Cover amount on 1 January 2026, and this will use the reference period as follows:
- 2 December 2025 to 23 December 2025
G5 – Supplier CfD and Nuclear RAB Credit Cover provides further details and an example to illustrate how to calculate your Credit Cover.
How do I keep track of my Credit Cover?
Your Credit Cover balance is available in the latest RAB Supplier Daily Minimum Credit Cover Report data sent to your company email and available to download on My EMRS within ‘Party Data’. Please see item ‘RAB Total Credit Cover’ (data item ‘E0239′) on the report which reflects the Total Credit Cover held (combination of cash and Letter of Credit value) as of the day.
The ‘T File CSV Format Backing Data’ document provides further details of all the other data items within the ‘RAB Supplier Daily Minimum Credit Cover Report’. You can navigate to the Publication section on our website and then select the Interface Definitions from the dropdown menu to locate this document.
Where can I locate more information on Nuclear RAB Credit Cover?
We have summarised information on the Stakeholder Support – Nuclear RAB Supplier webpage and WP42 – Supplier CfD and Nuclear RAB Credit Cover and G5 – Supplier CfD and Nuclear RAB Credit Cover will support you with this process.
When will I receive my invoice for my Reserve Payment?
Suppliers will receive confirmation of their share of the Total Reserve Amount via an invoice issued on 12 January 2026. In line with the 5-day payment terms, payment is due on 19 January 2026
Where can I locate information on how my Reserve Payment is calculated?
G3 – CfD and Nuclear RAB Reserve Payment provides information on how Suppliers Reserve Payment is calculated.
How do I make my Nuclear RAB payments?
For those making payments via cash, the bank account details will be confirmed on the Nuclear RAB invoices you receive. Please also be aware that your existing Direct Debit mandate with LCCC for the Contracts for Difference scheme, will also be used to collect monies for the Nuclear RAB scheme once operational and you do not need to take any further action.
If you currently pay manually and would like to set up a Direct Debit, please contact our Service Desk.
What are the key dates I need to be aware of?
The table below shows the key dates for the 1 January 2026 to 30 March 2026 Nuclear RAB Quarterly Obligation Period following this announcement.
| Date | Activity |
| 31 December 2025 | Suppliers ensure sufficient Credit Cover lodged for ILR of £3.663/MWh |
| 1 January 2026 | ILR to £3.663/MWh applies |
| 12 January 2026 | Suppliers invoiced their Reserve Amount |
| 12 January 2026 | Suppliers invoiced for the first Nuclear RAB ILR payment based on £3.663/MWh |
| 19 January 2026 | Suppliers Total Reserve payment and Interim Rate payments are due. |