UK non-commodity charge · Distribution · Electricity
DUoS excess capacity charge
Latest published rate, who sets it, and where it is forecast to go.
What DUoS excess capacity charge is, who sets the rate, what the revenue funds and where it is heading. Rates come from the Purely Energy non-commodity cost data hub; forecasts are our own.
DUoS excess capacity charge: what it is, who charges it, and what it pays for
What it is
The DUoS excess capacity charge charge in plain English
Penalty rate charged per kVA per day on any demand above the site's agreed supply capacity in a month. It is typically higher than the standard capacity rate, so a site that regularly breaches its agreed kVA usually saves money by formally increasing the capacity instead.
Who charges it
The body that sets the rate
Your regional DNO under Ofgem's RIIO-ED2 price control (April 2023 to March 2028)
Unit
p/kVA/day
Applies to
Half-hourly metered sites that exceed their agreed capacity
What it pays for
Where the revenue ends up
Reserving and reinforcing local network capacity
DUoS excess capacity charge FAQs
What is the DUoS excess capacity charge charge?
Penalty rate charged per kVA per day on any demand above the site's agreed supply capacity in a month. It is typically higher than the standard capacity rate, so a site that regularly breaches its agreed kVA usually saves money by formally increasing the capacity instead.
Who sets the DUoS excess capacity charge rate?
The DUoS excess capacity charge rate is set by Your regional DNO under Ofgem's RIIO-ED2 price control (April 2023 to March 2028).
What does DUoS excess capacity charge pay for?
DUoS excess capacity charge revenue supports Reserving and reinforcing local network capacity.
What is the DUoS excess capacity charge rate?
DUoS excess capacity charge is set by your regional network operator, so there is no single national rate. Use the NCC calculator with your MPAN or postcode to see the rate for your region.
Related charges in Distribution
Calculate your DUoS excess capacity charge exposure
Enter an MPAN or postcode plus kWh/kVA to see DUoS excess capacity charge alongside every other non-commodity line item for this year and next.
Flexible contracts and pass-through costs
How we manage non-commodity exposure for I&C buyers who need to stress-test contract decisions.
All UK energy charges
Browse every non-commodity charge with the latest published rates and forecast trajectory.
Rate data from the Purely Energy non-commodity cost data hub (dh.purelyenergy.co.uk). Published rates come from statutory publications by the body listed above; forecasts are modelled from published guidance and market trends, so treat P50 as a central estimate and use P10/P90 for sensitivity.