UK non-commodity charge · Transmission · Electricity
TNUoS demand charge (non-half-hourly)
Latest published rate, who sets it, and where it is forecast to go.
What TNUoS demand charge (non-half-hourly) 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.
TNUoS demand charge (non-half-hourly): what it is, who charges it, and what it pays for
What it is
The TNUoS demand charge (non-half-hourly) charge in plain English
Volumetric transmission demand charge for non-half-hourly metered sites, applied in pence per kWh to consumption in the 16:00 to 19:00 evening window and set per TNUoS zone by NESO. It is the NHH counterpart of the half-hourly Triad charge, recovered across units rather than measured peak demand.
Who charges it
The body that sets the rate
NESO (National Energy System Operator), final tariffs published each January for the charging year from 1 April
Unit
p/kWh
Applies to
Non-half-hourly metered electricity supplies
What it pays for
Where the revenue ends up
The national high-voltage transmission network (275kV and 400kV)
Published rate history
| Financial year | Rate | Year on year | Source |
|---|---|---|---|
| 2020/21 | 5.837p/kWh | - | Published |
| 2021/22 | 6.294p/kWh | +7.8% | Published |
| 2022/23 | 6.553p/kWh | +4.1% | Published |
| 2023/24 | 0.2790p/kWh | -95.7% | Published |
| 2024/25 | 0.2983p/kWh | +6.9% | Published |
| 2025/26 | 0.3784p/kWh | +26.9% | Published |
| 2026/27 | 0.3943p/kWh | +4.2% | Published |
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 |
|---|---|---|---|---|---|
| 2027 | - | 0.4888 | - | - | |
| 2028 | - | 0.4152 | - | - | |
| 2029 | - | 0.6271 | - | - | |
| 2030 | - | 0.6008 | - | - | |
| 2031 | - | 0.6128 | - | - | |
| 2032 | - | 0.6250 | - | - | |
| 2033 | - | 0.6375 | - | - | |
| 2034 | - | 0.6503 | - | - |
TNUoS demand charge (non-half-hourly) FAQs
What is the TNUoS demand charge (non-half-hourly) charge?
Volumetric transmission demand charge for non-half-hourly metered sites, applied in pence per kWh to consumption in the 16:00 to 19:00 evening window and set per TNUoS zone by NESO. It is the NHH counterpart of the half-hourly Triad charge, recovered across units rather than measured peak demand.
Who sets the TNUoS demand charge (non-half-hourly) rate?
The TNUoS demand charge (non-half-hourly) rate is set by NESO (National Energy System Operator), final tariffs published each January for the charging year from 1 April.
What does TNUoS demand charge (non-half-hourly) pay for?
TNUoS demand charge (non-half-hourly) revenue supports The national high-voltage transmission network (275kV and 400kV).
What is the latest published TNUoS demand charge (non-half-hourly) rate?
For 2026/27, the published TNUoS demand charge (non-half-hourly) rate is 0.3943 p/kWh.
What is the TNUoS demand charge (non-half-hourly) forecast?
Our latest forecast for 2027 is 0.4888 p/kWh.
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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. Primary source