2,902 Tariff Rates. All 14 DNOs. Complete Coverage.
GB distribution network charge data from 2017 to 2028.
Fixed Charge
12.45 p/day
Capacity Charge
1.234 p/kVA/day
Understanding CDCM
The Standard for GB Distribution Charges
Common Distribution Charging Methodology. We extract rates from Annex 1 (active tariffs) and Annex 3 (preserved tariffs) plus time band definitions from each DNO's charging statement.
Standardised Since April 2022
All 14 DNOs use the same 32 tariff categories. Consistent data format across GB.
Time-of-Use Pricing
Red/Amber/Green time bands. Peak periods vary by DNO region.
Cost-Reflective Charges
Higher voltage = lower losses = lower charges. Site-specific tariffs for larger connections.
Tariff Categories
32 Standardised Categories
Same categories across all DNOs since April 2022.
Domestic
Non-Domestic Aggregated
LV Site Specific
LV Sub Site Specific
HV Site Specific
Generation
Unmetered
What do B1, B2, B3, B4 mean?
TDR bands based on agreed capacity (MIC). B1 = smallest connections, B4 = largest. Thresholds change under RIIO-3 (April 2026).
Learn moreData Structure
7 Charge Components Per Tariff
Time-of-use rates plus fixed and capacity charges.
p/kWh
p/kWh
p/kWh
p/MPAN/day
p/kVA/day
p/kVA/day
p/kVArh
Regional Coverage
All 14 Distribution Network Operators
10
Eastern
UKPN
11
East Midlands
NGED
12
London
UKPN
13
SP Manweb
SPEN
14
West Midlands
NGED
15
NPg Northeast
NPg
16
ENW
ENWL
17
Scottish Hydro
SSEN
18
SP Distribution
SPEN
19
South Eastern
UKPN
20
Southern
SSEN
21
South Wales
NGED
22
South West
NGED
23
NPg Yorkshire
NPg
Plus 19+ IDNOs covered via host DNO rate mapping.
Historical Coverage
Data from 2017 to 2028
Historical data from 2017 plus forward-looking rates published 12-18 months ahead.
Why Historical Data Matters
Forecast calibration
Validate models against actual rates
Trend analysis
Track charge evolution by region
Retrospective validation
Check old bills for errors
See CDCM Data in Action
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