GB electricity bill breakdown by component

GB electricity bill breakdown by componentAnnual cost of each component of a Great Britain household electricity bill, £ per year for a benchmark 3100 kWh household, nominal (cash) terms. This is the data the chart on this page draws.Researched, built and maintained by Ben James, an independent energy analyst. Cite as: Ben James, GB Electricity Bills, https://www.electricitybills.uk. Annual cost per component, £ per year, 3100 kWh household, nominal terms. Blank cells mean the scheme did not exist, or was not levied, in that year.

Component

Group

FY 15-16

FY 16-17

FY 17-18

FY 18-19

FY 19-20

FY 20-21

FY 21-22

FY 22-23

FY 23-24

FY 24-25

FY 25-26

26 FYTD *

Wholesale

179.61

149.10

166.69

183.26

213.27

169.84

219.91

837.53

584.29

310.73

319.60

336.99

Distribution Costs (DUoS)

Network Costs

84.96

91.02

84.00

81.80

86.65

88.19

93.87

135.14

110.38

137.57

114.00

117.88

Transmission Costs (TNUoS)

Network Costs

31.91

38.02

37.72

37.71

39.51

37.42

40.26

42.30

45.24

40.11

51.66

83.60

Balancing Costs (BSUoS)

Network Costs

6.70

6.98

8.29

7.99

9.52

12.03

15.06

23.41

68.30

33.51

42.94

46.89

Renewables Obligation (RO)

Generation Subsidies

39.85

48.57

59.37

73.10

73.93

74.40

81.54

86.24

85.12

98.53

102.49

25.36

Contracts for Difference (CfD)

Generation Subsidies

0.13

2.54

8.40

14.08

19.94

30.57

30.52

-22.19

-3.19

34.05

34.53

33.06

Feed-in Tariff (FiT)

Generation Subsidies

14.37

16.46

18.58

19.25

21.24

17.87

20.89

23.19

22.74

24.23

Sizewell C RAB

Generation Subsidies

4.13

14.78

Capacity Market

Generation Subsidies

0.07

0.27

3.41

11.40

14.92

18.27

14.58

10.48

17.56

21.37

27.65

48.18

Supplier Costs & Margin

Miscellaneous

82.13

82.70

84.54

86.87

88.81

89.64

91.38

76.73

107.35

109.55

135.35

143.68

VAT

Miscellaneous

22.22

21.92

24.19

26.89

29.92

28.93

32.34

62.54

54.29

43.28

45.37

Smart Meter Net Cost Change

Miscellaneous

6.94

13.96

16.73

16.51

15.61

16.11

17.63

4.34

-2.52

Energy Company Obligation (ECO)

Miscellaneous

11.78

11.86

9.42

10.32

11.11

14.03

13.61

16.40

22.07

26.95

27.36

Warm Home Discount

Miscellaneous

6.56

6.62

6.70

7.11

7.24

7.21

7.05

9.84

10.30

10.91

16.10

3.41

Network Charging Compensation (NCC)

Miscellaneous

3.20

3.74

Assistance for Areas with High Electricity Distribution Costs (AAHEDC)

Miscellaneous

0.73

0.78

0.83

0.89

1.03

1.38

1.40

1.44

1.45

1.40

1.42

Total annual bill

466.65

460.38

507.88

564.76

628.25

607.54

679.25

1313.30

1140.15

908.83

952.86

880.70

All-in unit rate (p/kWh)

15.05

14.85

16.38

18.22

20.27

19.60

21.91

42.36

36.78

29.32

30.74

28.41

* 26 FYTD covers only the part of the financial year billed so far, and omits components that settle annually. Its column total is not a full-year figure — for an annual bill use the last complete financial year, FY 25-26 (£952.86).Every dataset, without JavaScript

/llms.txt — summary of the site, its datasets, key figures and definitions.

/data/ — index of all tables and CSV downloads.

Bill breakdown by component (CSV) — annual cost of every component of a GB household electricity bill since financial year 2015-16.

Wholesale electricity and gas prices (CSV) — daily GB day-ahead power and gas prices in £/MWh, nominal and CPI-adjusted, updated each weekday.

2030 bill forecast (CSV) — component-by-component projection to 2030.

Pages on this site

Bill breakdown — a household bill split by component, by financial year.

Wholesale monitor — daily and half-hourly GB wholesale electricity prices, gas prices, intraday price shape and the gas–electricity linkage.

2030 forecast — where each component of the bill is heading.

How the energy price cap works — Ofgem's wholesale allowance methodology: observation windows, the 3-1.5-12 hedging approach, shaping and backwardation.

AR7 cheat sheet — how Contracts for Difference work and what Allocation Round 7 means for bills.