Purpose: Give you everything you need to quote sub-region sites confidently and avoid unnecessary delays.
Some sites sit in sub-regions (IDNOs).
You price them using the parent region.
Only EDF, BGB, and Valda accept sub-regions.
This guide gives you the rules so your sales flow is smooth and you avoid waiting for answers.
Sub-regions are independent networks inside a normal DNO area.
They look different on the MPAN, but commercially they follow the parent region.
Rule: Price the sub-region using the parent region’s rates. That is all you need to do.
| Supplier | Accepts Sub-Regions? |
|---|---|
| EDF | ✅ Yes |
| British Gas Business (BGB) | ✅ Yes |
| Valda | ✅ Yes |
| Scottish Power | ❌ No |
| E.ON Next | ❌ No |
| BG Lite | ❌ No |
| Pozitive / F&S / Others | ❌ No |

This avoids slowdown for you and your client.
Always price the parent region.
Example: If sub-region 32 sits under region 19, then use region 19 pricing tables.

Only after submission.
You quote using the parent region.
You submit the contract.
Supplier validates the IDNO at their end.
If accepted, great.
If rejected, you choose one that does support it (EDF, BGB, Valda).

Use this to keep your quoting clean and avoid friction:
Check your supplier.
If it is not EDF, BGB, or Valda, then sub-regions are not supported.
Price using the parent region.
This ensures your quote is accurate.
Submit normally.
The supplier will handle the IDNO validation automatically.
If rejected, simply move to one of the suppliers that supports it.
This keeps you moving without waiting for answers.
Scenario:
Sub-region 32 and you want to quote.
Correct workflow:
“Sub-region 32 maps to region 19, so I’ll price region 19.
Scottish Power does not support sub-regions, so I’ll use EDF or BGB instead.”
Fast; clean; no waiting.