UK non-commodity charge · Distribution · Electricity
DUoS capacity charge
Latest published rate, who sets it, and where it is forecast to go.
What DUoS 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 capacity charge: what it is, who charges it, and what it pays for
What it is
The DUoS capacity charge charge in plain English
Charge based on your agreed supply capacity (kVA). Only applies to half-hourly metered sites. If you exceed your agreed capacity, you pay an excess rate.
Introduced 1990 (privatisation).
Who charges it
The body that sets the rate
Your regional DNO under Ofgem RIIO-ED2
Unit
p/kVA/day
Applies to
Half-hourly metered sites with an agreed supply capacity
What it pays for
Where the revenue ends up
Reserving network capacity for your site
Forecast trajectory
Forecasts from our non-commodity cost model. P10, P50 and P90 are the 10th, 50th and 90th percentile outcomes; P50 is the central estimate.
| Year | P10 | P50 | P90 | Confidence | Rationale |
|---|---|---|---|---|---|
| 2026-27 | 0.7500 | 0.7818 | 0.8100 | high | RIIO-ED2 framework provides regulatory certainty, though charging methodology reform creates some uncertainty |
| 2027-28 | 0.7800 | 0.8173 | 0.8500 | high | Final RIIO-ED2 year with defined allowed revenues and accelerating network investment requirements |
| 2028-29 | 0.8200 | 0.8745 | 0.9300 | med | RIIO-ED3 commencement creates uncertainty around new price control parameters |
| 2029-30 | 0.8600 | 0.9270 | 1.000 | med | Material electrification demand drivers offset by emerging distributed generation impacts |
| 2030-31 | 0.9000 | 0.9824 | 1.070 | med | Peak network investment requirements with ambiguous distributed generation offsetting effects |
| 2031-32 | 0.9200 | 1.012 | 1.120 | low | Highly speculative due to absence of regulatory framework beyond RIIO-ED3 |
| 2032-33 | 0.9300 | 1.032 | 1.150 | low | Speculative projection assuming mature electrification with uncertain technology impacts |
| 2033-34 | 0.9400 | 1.053 | 1.180 | low | Highly uncertain projection with speculative distributed generation penetration impacts |
| 2034-35 | 0.9200 | 1.048 | 1.200 | low | Speculative decline assumes uncertain network optimisation and demand response changes |
DUoS capacity charge FAQs
What is the DUoS capacity charge charge?
Charge based on your agreed supply capacity (kVA). Only applies to half-hourly metered sites. If you exceed your agreed capacity, you pay an excess rate.
Who sets the DUoS capacity charge rate?
The DUoS capacity charge rate is set by Your regional DNO under Ofgem RIIO-ED2.
What does DUoS capacity charge pay for?
DUoS capacity charge revenue supports Reserving network capacity for your site.
What is the DUoS capacity charge rate?
DUoS 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.
What is the DUoS capacity charge forecast?
Our latest forecast for 2026-27 is 0.7818 p/kVA/day (high confidence). RIIO-ED2 framework provides regulatory certainty, though charging methodology reform creates some uncertainty
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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.