DUoS

Key takeaways

DUoS is the charge for using the local electricity distribution network.

It helps fund building, operating and maintaining the regional network.

DUoS can vary by region and, for some meters, by time bands.

What does DUoS stand for?

DUoS stands for Distribution Use of System.

SSEN’s DUoS explainer describes DUoS charges as applying to connections to the distribution network and collecting the revenue needed to build, operate, maintain, repair and invest in that network.

Why DUoS varies

DUoS is tied to local distribution networks, so it can vary based on:

1. distribution area
2. your meter type and settlement setup
3. time bands (where applicable)

This is one of the reasons “cheap unit rate” comparisons can be misleading if a quote is not like-for-like.

How DUoS appears on bills

1. bundled into your unit rate (all-inclusive), or
2. shown as DUoS line items (pass-through / itemised billing)

If you have a half-hourly meter, DUoS time bands can be a real factor, so it’s worth asking your supplier or broker how they apply.

Sources

1. SSEN, “What are DUoS charges?” (PDF explainer)
2. Ofgem, DUoS Significant Code Review update (background on reform and objectives)