UK Non-Commodity Charge · Transmission
TNUoS Non-locational HV Band 4 (Electricity)
Current rates, who sets them, and where they are forecast to go.
What TNUoS Non-locational HV Band 4 (Electricity)is, who sets the rate, what the revenue funds, and where it's heading. Sourced daily from the Purely Energy non-commodity cost data hub.
TNUoS Non-locational HV Band 4 (Electricity): what it is, who charges it, and what it pays for
What it is
The TNUoS Non-locational HV Band 4 (Electricity) charge in plain English
Transmission charge based on your demand during the 3 highest national peaks in winter (Nov–Feb). Called TRIAD because it’s the average of your 3 peak half-hours. Only applies to HH-metered sites.
Introduced 1990 (privatisation). Reduced importance since TCR reform in 2023.
Who charges it
The body that sets the rate
NESO (National Energy System Operator)
Unit
GBP/MPAN/day
Applies to
UK business electricity
What it pays for
Where the revenue ends up
National high-voltage transmission network (275kV/400kV pylons and cables)
Published rate history
| Financial year | Rate | YoY change | Source |
|---|---|---|---|
| FY2020 | 18.500GBP/MPAN/day | - | published |
| FY2023 | 276.99GBP/MPAN/day | +1397.2% | published |
| FY2024 | 243.63GBP/MPAN/day | -12.0% | published |
| FY2025 | 317.60GBP/MPAN/day | +30.4% | published |
| FY2026 | 528.91GBP/MPAN/day | +66.5% | published |
Forecast trajectory
AI-assisted forecasts from our deep-research pipeline. P10, P50 and P90 are the 10th, 50th and 90th percentile outcomes; P50 is the central estimate.
| Year | P10 | P50 | P90 | Confidence | Rationale |
|---|---|---|---|---|---|
| 2027 | - | 792.81 | - | - | |
| 2028 | - | 933.43 | - | - | |
| 2029 | - | 1032.07 | - | - | |
| 2030 | - | 1135.03 | - | - | |
| 2031 | - | 1157.73 | - | - | |
| 2032 | - | 1180.88 | - | - | |
| 2033 | - | 1204.50 | - | - | |
| 2034 | - | 1228.59 | - | - |
TNUoS Non-locational HV Band 4 (Electricity) FAQs
What is the TNUoS Non-locational HV Band 4 (Electricity) charge?
Transmission charge based on your demand during the 3 highest national peaks in winter (Nov–Feb). Called TRIAD because it’s the average of your 3 peak half-hours. Only applies to HH-metered sites.
Who sets the TNUoS Non-locational HV Band 4 (Electricity) rate?
The TNUoS Non-locational HV Band 4 (Electricity) rate is set by NESO (National Energy System Operator).
What does TNUoS Non-locational HV Band 4 (Electricity) pay for?
TNUoS Non-locational HV Band 4 (Electricity) revenue supports National high-voltage transmission network (275kV/400kV pylons and cables).
What is the current TNUoS Non-locational HV Band 4 (Electricity) rate?
For financial year 2026, the published TNUoS Non-locational HV Band 4 (Electricity) rate is 528.91 GBP/MPAN/day.
What is the TNUoS Non-locational HV Band 4 (Electricity) forecast?
Our latest forecast for 2027 is 792.81 GBP/MPAN/day.
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Rate data sourced 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 AI-generated from published guidance and market trends; treat P50 as a central estimate and reference P10/P90 for sensitivity.