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E.ON Next/British Gas/British Gas Lite
How these charges are treated
- The existing contract does not currently include a separate RAB or TNUoS charge.
- However, standard contract terms allow regulated industry charges to be passed through if there are significant market-wide changes.
- For new contracts, pricing already includes a forecasted allowance for both RAB and TNUoS.
What this means for you
Your agreed price already reflects expected industry costs. While no immediate change is planned for existing contracts, regulated charges may be reviewed if confirmed costs change materially across the market.
EDF Energy 
How these charges are treated
- Older contracts were agreed before RAB and TNUoS were confirmed.
- EDF is currently waiting for final industry confirmation (expected January) before deciding whether any action is required.
- New contracts include forecasted RAB and TNUoS costs in the pricing.
What this means for you
Your price reflects known costs today. If industry charges are confirmed and applicable, EDF will review the position and communicate any changes in advance.
Corona Energy
How these charges are treated
- From 1st December 2025, electricity unit rates increased by 0.4p/kWh to reflect RAB.
- RAB is included in the unit rate.
- TNUoS is included in the standing charge from October 2025.
What this means for you
These charges are already built into the pricing, so there should be no unexpected adjustments later relating to RAB or TNUoS.
YU Energy 
How these charges are treated
- The Nuclear RAB charges will appear as a separate line on the bills from Feb 2026.
What this means for you
- The new charges will appear on the bills issued in Feb 2026.
- They will include 2 lines for the Nuclear RAB levy:
- The Jan 2026 charge will appear as a single amount.
- The Feb 2026 charge will appear as a dedicated line item labelled as "Nuclear RAB Levy".
Drax Energy 
How these charges are treated
- RAB is already included in prices. Any affected existing customers have been contacted directly.
- TNUoS charges are still uncertain for 2025.
- New contracts include a conservative allowance (50% above published rates).
- If final charges exceed this, a reconciliation may apply.
What this means for you
Your pricing already includes a buffer for expected costs. If actual industry charges are significantly higher than forecast, a review may be required once confirmed.
SSE 
How these charges are treated
- No changes to existing contracts before March 2026 (Protect product only).
- TNUoS is included in pricing for new contracts.
- SSE Choice products were never fully fixed.
What this means for you
The contract pricing already reflects known costs, and no changes are expected in the near term for eligible products.
Scottish Power 
How these charges are treated
- RAB and TNUoS are treated as full pass-through charges.
- Charges will be reviewed once final industry costs are confirmed.
What this means for you
These are regulated charges that will be applied at cost. They are not supplier increases and will be shown transparently.
Sefe 
How these charges are treated
- RAB and TNUoS were already included in pricing.
- No changes are required.
What this means for you
Business as usual – no impact or adjustment is expected.
Smartest Energy 
How these charges are treated
- From 1st December 2025, a 0.36p/kWh Nuclear RAB charge will be applied.
- This will appear as a separate line item on monthly bills.
What this means for you
The charge will be clearly itemised and reflects a regulated industry cost rather than a change to your core energy price.
YGP 
How these charges are treated
- Contracts agreed before 3 October 2025: RAB appears as a separate invoice line (expected 0.4–0.5p/kWh).
- Contracts agreed on or after 3 October 2025: RAB is included in the unit rate.
What this means for you
How RAB appears depends on when your contract was agreed, but the cost treatment is transparent in either case.
Valda Energy 
How these charges are treated
- Existing customers (pre-1st October 2025): RAB expected to be passed through via unit rates (customer communications pending).
- New customers (from 1st October 2025): RAB included in pricing.
- TNUoS is under review and not currently included in rates.
What this means for you
RAB is already accounted for in pricing.
TNUoS treatment will be confirmed once industry costs are finalised.
Here is a downloadable document to support you with explaining these charges to your customers. Click on the image below:
