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Javascript is required to render chart Total fines and redress payments since 2010.

Source: Investigations and enforcement data.

Information correct as of: 5 September 2019

This graph details the financial penalties that we have imposed on energy companies since 2010. These include fines (penalties which are directly paid to the Treasury) and redress payments (where we come to an arrangement with a company to take action that will directly benefit consumers), such as payments to social programmes like the Warm Home Discount.

Policy Areas:

  • Enforcement

Data Table

Total fines and redress payments since 2010
Fines (£)Redress payments (£)Total payments (£)
201015,000,000200,00015,200,000
201110,000,0003,638,00013,638,000
201210,200,0016,559,50016,759,501
201311,000,00122,000,00033,000,001
2014925,00434,809,90035,734,904
20155,000,02666,927,35371,927,379
20168 51,957,992 51,958,000
2017219,030,99819,031,000
20182,400,0014,756,9147,156,915
20192,998,23646,320,70549,318,941
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Javascript is required to render chart Large suppliers: Domestic dual fuel bill breakdown over time.

Source: Ofgem analysis of companies’ Consolidated Segmental Statements.

Information correct as of: August 2019

This chart provides an estimate of the breakdown of a dual fuel bill over time for an average domestic customer of the large suppliers.  It is based on information reported by the large suppliers in their annual Consolidated Segmental Statements. For more information, please see our page Understanding the profits of the large energy suppliers. Earnings Before Interest and Tax (EBIT) – which we also refer to as suppliers’ pre-tax margins – are calculated as revenue minus costs, before accounting for taxes and interest.

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Large suppliers: Domestic dual fuel bill breakdown over time
Wholesale costsDirect costsNetwork costsEnvironmental/social costsOther direct costsOperating costsEBITVATBill
20096212901328521095
201058828016035531116
201153728715230501057
201261234716153591232
2013628276109016349611286
2014532278100516651571190
201550627986718249551165
2016425292911319354531123
20174042841081420549531117
20184452811341621733561184

More information

Domestic dual fuel bill breakdown over time: At-a-glance summary

Between 2009 and 2018, the average domestic dual fuel bill has fluctuated, reaching a peak of £1,286 in 2013. In 2018 it increased to £1,184 from £1,117 in 2017, mainly as a result of an increase in wholesale and environmental/social costs.

The large suppliers’ financial statements have shown a marked difference in outturns for gas and electricity. Despite the fall in revenues, aggregate pre-tax profits from the supply of gas increased year-on-year, while for electricity they fell significantly.

Relevance and further information

This indicator helps to explain the costs making up an average dual fuel bill and show the factors influencing total bills in a given year. The costs that make up a bill are wholesale costs, network costs, environmental and social obligation costs, operating costs (including depreciation and amortisation), supplier pre-tax margin and VAT.

Methodology

To estimate the breakdown of an average gas and electricity bill, we took the sum of each category of costs and pre-tax supply margins as reported by the suppliers for each fuel and then divided by the total number of customers for that fuel. We then added VAT at 5% and summed the implied bill components for gas and electricity together to derive an estimate of the overall costs making up a dual fuel bill.

Note that because it is based on the total costs and customer numbers reported by suppliers irrespective of their tariff type, the bill breakdown for gas will reflect a mixture of the costs of serving gas to dual fuel and single fuel customers – and the same also applies to electricity. As such, the dual fuel breakdown should be considered an approximation in that it will reflect a combination of the costs incurred in serving gas and electricity to both dual fuel and single fuel customers (which may differ if, for example, electricity-only customers consume more electricity than those customers that are also supplied with gas).

The data presented is based on the latest available Consolidated Segmental Statements. It may differ from the data that can be found in the supplier’s externally published Consolidated Segmental Statements. This is because we have made some adjustments to the way in which exceptional items are reported among suppliers to improve comparability.

Figures relate to the suppliers’ financial years. Five of the companies (British Gas, EDF, E.ON, npower and ScottishPower) have financial years ending in December, whereas SSE’s financial year runs from April to March.

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Source: Energylinx (Until May 2017) & Energyhelpline (June 2017 onwards).

Information correct as of: August 2019

This chart shows trends in domestic energy bills by tariff offered by the six large suppliers and other suppliers. It compares their average standard variable tariffs with the cheapest tariffs available in the market (including white label tariffs). Figures are based on a typical domestic dual fuel customer paying by direct debit. 

From February 2017 the prices shown in the chart are calculated using the latest Typical Domestic Consumption Values (TDCV) that entered into effect from 1st of October 2017 (see the methodology section for more details).

In practical terms, this means that the tariffs offered after February 2017 are likely to appear slightly lower than those before February 2017.  

This information should not be used as a price comparison tool. To find out about accredited price comparison sites, see Compare gas and electricity tariffs.

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Retail price comparison by company and tariff type: Domestic (GB)
DateAverage standard variable tariff (Six largest suppliers)Average standard variable tariff (Other suppliers)Cheapest tariff (Six largest suppliers)Cheapest tariff (All suppliers)Cheapest tariff (Basket)Default tariff cap level
28/01/2012 1,020.16 1,024.33 915.27 906.56 947.56
28/02/2012 1,000.76 1,017.41 886.18 878.10 930.29
28/03/2012 997.25 1,017.41 886.18 878.10 936.54
28/04/2012 997.25 1,017.35 895.69 878.10 937.68
28/05/2012 997.25 1,017.35 895.69 878.10 929.78
28/06/2012 997.25 1,032.16 895.69 895.69 945.53
28/07/2012 997.25 1,032.16 895.69 875.93 928.99
28/08/2012 997.25 1,030.02 899.10 875.93 924.85
28/09/2012 997.25 1,017.84 901.47 875.93 931.04
28/10/2012 1,009.00 1,020.51 906.17 893.85 956.00
28/11/2012 1,030.78 1,075.12 958.21 909.59 997.71
28/12/2012 1,061.80 1,087.65 990.70 909.59 994.59
28/01/2013 1,074.42 1,087.65 957.18 909.59 990.81
28/02/2013 1,074.42 1,119.05 957.18 909.59 994.56
28/03/2013 1,074.42 1,119.05 966.54 909.59 995.50
28/04/2013 1,074.42 1,119.05 966.54 909.59 988.37
28/05/2013 1,074.43 1,119.05 966.54 962.43 997.77
28/06/2013 1,074.43 1,119.05 966.54 769.95 967.26
28/07/2013 1,074.45 1,119.05 984.68 769.95 974.82
28/08/2013 1,074.45 1,119.05 971.77 769.95 988.47
28/09/2013 1,074.45 1,119.05 971.77 769.95 979.55
28/10/2013 1,074.45 1,127.02 1,011.80 769.95 995.67
28/11/2013 1,105.94 1,123.75 993.40 769.95 992.26
28/12/2013 1,138.95 1,123.75 1,033.47 769.95 997.00
28/01/2014 1,145.84 1,125.14 1,033.47 975.21 1,013.73
28/02/2014 1,134.09 1,128.76 1,033.97 966.34 1,014.19
28/03/2014 1,128.10 1,126.61 1,024.79 964.31 1,016.25
28/04/2014 1,128.10 1,129.62 1,000.38 946.42 995.26
28/05/2014 1,128.10 1,129.62 1,000.38 944.55 995.13
28/06/2014 1,128.10 1,129.62 1,000.38 944.55 992.88
28/07/2014 1,128.10 1,134.19 1,000.38 944.95 976.39
28/08/2014 1,128.10 1,127.79 1,000.38 943.43 978.98
28/09/2014 1,128.10 1,158.39 960.90 942.27 972.34
28/10/2014 1,128.10 1,131.80 953.40 931.02 960.15
28/11/2014 1,128.10 1,131.80 921.88 914.51 947.94
28/12/2014 1,128.10 1,130.51 916.21 906.14 929.69
28/01/2015 1,124.33 1,130.51 875.40 871.26 895.39
28/02/2015 1,106.65 1,110.84 839.28 839.28 881.39
28/03/2015 1,106.65 1,088.31 836.99 836.99 892.38
28/04/2015 1,106.65 1,075.32 834.57 834.57 878.56
28/05/2015 1,102.28 1,073.26 835.19 830.56 877.12
28/06/2015 1,102.28 1,073.26 835.71 830.56 871.21
28/07/2015 1,102.28 1,066.77 863.85 830.56 867.88
28/08/2015 1,098.03 1,066.77 876.03 830.56 868.79
28/09/2015 1,098.03 1,054.98 876.03 830.56 858.62
28/10/2015 1,098.03 1,050.12 803.00 793.93 823.00
28/11/2015 1,098.03 1,040.70 805.40 787.05 810.84
28/12/2015 1,098.03 1,039.03 850.52 787.05 803.86
28/01/2016 1,098.03 1,035.48 769.69 765.00 785.04
28/02/2016 1,092.69 1,020.06 738.38 738.38 755.65
28/03/2016 1,071.44 1,013.00 727.70 727.70 756.05
28/04/2016 1,065.97 978.55 723.91 723.91 751.58
28/05/2016 1,065.97 976.04 723.23 723.23 742.71
28/06/2016 1,065.97 984.02 723.23 723.23 751.36
28/07/2016 1,065.97 988.70 779.39 758.31 779.72
28/08/2016 1,065.97 983.86 801.37 769.65 789.25
28/09/2016 1,065.97 983.89 754.64 744.30 777.00
28/10/2016 1,065.97 994.93 803.54 741.92 786.41
28/11/2016 1,065.97 1,012.84 897.18 790.02 859.23
28/12/2016 1,065.97 1,019.72 951.51 790.02 872.16
28/01/2017 1,061.06 1,020.10 951.51 833.71 881.11
28/02/2017 1,081.27 1,027.06 928.48 829.10 869.79
28/03/2017 1,109.48 1,035.47 922.23 829.10 873.38
28/04/2017 1,122.28 1,041.56 923.55 863.31 874.62
28/05/2017 1,122.28 1,039.22 923.57 826.52 861.76
28/06/2017 1,122.28 1,026.98 923.57 835.76 852.58
28/07/2017 1,122.28 1,030.63 922.82 829.91 844.94
28/08/2017 1,122.28 1,030.76 910.05 810.11 839.30
28/09/2017 1,134.95 1,026.42 904.48 826.73 837.66
28/10/2017 1,134.95 1,031.41 897.98 826.73 854.69
28/11/2017 1,134.95 1,044.84 928.59 826.73 846.77
28/12/2017 1,134.95 1,040.86 973.04 798.72 841.48
28/01/2018 1,134.95 1,036.14 907.89 809.32 840.81
28/02/2018 1,134.95 1,039.85 900.98 810.06 840.58
28/03/2018 1,134.95 1,044.29 900.98 810.11 842.91
28/04/2018 1,138.28 1,061.81 1,000.42 788.16 820.46
28/05/2018 1,138.28 1,060.56 962.53 788.16 832.69
28/06/2018 1,172.20 1,066.39 953.16 796.99 845.91
28/07/2018 1,184.79 1,075.35 965.27 826.73 861.22
28/08/2018 1,194.00 1,091.02 951.33 842.49 897.02
28/09/2018 1,205.62 1,104.91 1,043.21 920.60 982.09
28/10/2018 1,220.65 1,124.27 1,051.27 920.60 989.84
28/11/2018 1,220.65 1,140.97 1,030.12 946.13 993.80
28/12/2018 1,220.65 1,142.96 1,034.69 902.66 983.19
28/01/2019 1,136.67 1,099.49 1,035.63 941.26 992.85 1,137.47
28/02/2019 1,136.67 1,097.67 1,008.69 929.66 974.58 1,137.47
28/03/2019 1,136.67 1,094.87 1,011.22 891.94 945.99 1,137.47
28/04/2019 1,253.94 1,152.11 1,024.59 880.20 929.55 1,254.00
28/05/2019 1,253.94 1,153.58 943.25 872.57 922.45 1,254.00
28/06/2019 1,253.94 1,148.88 932.24 872.57 897.80 1,254.00
28/07/20191,253.991,142.74989.24846.34890.44 1,254.00
28/08/20191,254.00

More information

At-a-glance summary

As of July 2019, the average price of SVTs for the six largest suppliers for a typical dual fuel customer paying with direct debit was £1,254, virtually unchanged from the previous month. This is level with the default tariff price cap, which was updated on 1 April 2019.

The cheapest tariff in the market in July 2019 was £846, a £27 fall compared with previous month. The cheapest tariff basket was £890 in July 2019, falling for the 8th consecutive month in a row, where the basket is £8 cheaper than in June 2019. See the methodology for information on how the cheapest tariff basket is calculated.

The differential between the average price of SVTs for the six largest suppliers and the market cheapest tariff is now £408, which is an increase of £26 compared to June 2019. The differential to the cheapest tariff basket increased from £356 to £364. This was mostly due to SVTs being priced at the level of the cap, whilst suppliers have also released cheaper fixed tariffs due to wholesale costs decreasing.

For details on prices of fixed default tariffs, please see the chart showing Average tariff prices per supplier.

Relevance and further information

Tariff differentials reflect pricing in different market segments, as well as how much other suppliers are able to compete on price with the six large suppliers.

Methodology

We calculate the bill values associated with the different tariff types using a ‘typical medium domestic consumer’. As of October 2017, typical domestic consumption values (TDCV) for a medium consumer are 12,000kWh/year for gas and 3,100kWh/year for electricity (profile class 1). The chart includes collective switching tariffs from Q1 2016. All tariffs shown in the chart are for a dual fuel, direct debit customer. Dual fuel refers to a situation where a customer takes gas and electricity from the same supplier.

A standard variable tariff refers to a supply contract which is for a period of an indefinite length and which does not contain a fixed term period that applies to any of the terms and conditions. It’s an energy supplier’s basic offer. If a customer does not choose a specific energy plan, for example after their fixed tariff ends, they will be moved on a standard variable tariff until they have chosen a new one. A customer can also make an active choice to select a standard variable tariff.

Tariffs with limited availability depending on customer features (for example, tariffs which are only available to new customers, also known as ‘acquisition’ tariffs, or tariffs restricted to certain regions) are excluded from the calculation to make sure that all tariffs considered are generally available to all customers across GB.

Tariffs available with white label suppliers are included in the calculation of the cheapest tariffs. White label suppliers are organisations without supply licences that partner with an active licensed supplier to offer gas and electricity using their own brand.

To calculate the average of the cheapest tariffs from the 10 cheapest suppliers we took the cheapest tariff offered by each supplier in the market (i.e. one tariff per supplier) and then ranked the tariffs in order of price. We then took the simple average of the 10 cheapest tariffs in this list. This method is to ensure a cross section of suppliers is included in the calculation.

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Source: Energylinx (Until May 2017) & Energyhelpline (June 2017 onwards).

Information correct as of: August 2019

This chart compares the cheapest available tariffs offered by the six large suppliers with the cheapest tariff available in the market by payment method (direct debit, standard credit and prepayment). Figures are based on a typical domestic dual fuel customer.

From February 2017 the prices shown in the chart are calculated using the latest Typical Domestic Consumption Values (TDCV) that entered into effect from 1st of October 2017 (see the methodology section for more details).

In practical terms, this means that the tariffs offered after February 2017 are likely to appear slightly lower than those before February 2017.  

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Cheapest tariffs by payment method: Typical domestic dual fuel customer (GB)
DateSix largest suppliers (direct debit)Six largest suppliers (standard credit)Six largest suppliers (prepayment)Market (direct debit)Market (standard credit)Market (prepayment)
28/01/2012 915.27 976.70 1,021.54 906.56 971.04 969.61
28/02/2012 886.18 976.70 1,021.54 878.10 971.04 969.61
28/03/2012 886.18 976.70 1,021.54 878.10 971.04 969.61
28/04/2012 895.69 953.40 1,021.54 878.10 953.40 969.24
28/05/2012 895.69 953.40 1,021.54 878.10 890.12 969.24
28/06/2012 895.69 953.40 1,021.54 895.69 953.40 1,017.42
28/07/2012 895.69 953.40 1,021.54 875.93 953.40 1,017.42
28/08/2012 899.10 957.03 1,021.54 875.93 957.03 1,017.42
28/09/2012 901.47 1,020.71 1,021.54 875.93 988.14 1,017.42
28/10/2012 906.17 1,020.71 1,069.39 893.85 988.14 1,019.30
28/11/2012 958.21 1,020.71 1,069.39 909.59 979.35 1,045.64
28/12/2012 990.70 1,071.38 1,133.19 909.59 979.35 1,045.64
28/01/2013 957.18 1,037.20 1,133.19 909.59 979.35 1,045.64
28/02/2013 957.18 1,037.20 1,133.19 909.59 1,037.20 1,045.64
28/03/2013 966.54 1,046.57 1,133.19 909.59 1,046.57 1,045.64
28/04/2013 966.54 1,046.57 1,133.19 909.59 1,046.57 1,045.64
28/05/2013 966.54 1,046.57 1,133.19 962.43 996.90 1,045.64
28/06/2013 966.54 1,046.57 1,133.19 769.95 996.90 1,045.64
28/07/2013 984.68 1,075.51 1,133.19 769.95 996.90 1,045.64
28/08/2013 971.77 1,051.79 1,133.19 769.95 1,051.79 1,045.64
28/09/2013 971.77 1,051.79 1,133.19 769.95 1,051.79 1,045.64
28/10/2013 1,011.80 1,079.91 1,133.19 769.95 1,070.99 1,093.35
28/11/2013 993.40 1,058.15 1,150.97 769.95 1,058.15 1,093.35
28/12/2013 1,033.47 1,101.65 1,178.61 769.95 1,101.65 1,093.35
28/01/2014 1,033.47 1,101.65 1,178.61 975.21 1,101.65 1,172.77
28/02/2014 1,033.97 1,108.10 1,178.61 966.34 1,108.10 1,172.77
28/03/2014 1,024.79 1,117.27 1,178.61 964.31 1,117.27 1,171.39
28/04/2014 1,000.38 1,069.95 1,178.61 946.42 1,069.95 1,171.39
28/05/2014 1,000.38 1,069.95 1,178.61 944.55 1,069.95 1,171.39
28/06/2014 1,000.38 1,069.95 1,170.86 944.55 1,069.95 1,162.40
28/07/2014 1,000.38 1,069.95 1,170.86 944.95 1,029.05 1,162.40
28/08/2014 1,000.38 1,069.95 1,170.86 943.43 1,038.88 1,154.43
28/09/2014 960.90 1,030.95 1,170.86 942.27 1,030.95 1,154.43
28/10/2014 953.40 1,046.45 1,170.86 931.02 1,024.45 1,154.43
28/11/2014 921.88 1,003.79 1,170.86 914.51 1,003.79 1,154.43
28/12/2014 916.21 1,003.79 1,170.86 906.14 1,003.79 1,151.22
28/01/2015 875.40 945.46 1,148.99 871.26 945.46 1,148.99
28/02/2015 839.28 955.07 1,148.90 839.28 950.35 1,148.90
28/03/2015 836.99 907.24 1,148.99 836.99 907.24 1,116.99
28/04/2015 834.57 977.56 1,141.64 834.57 950.63 1,116.99
28/05/2015 835.19 905.44 1,141.64 830.56 905.44 1,116.99
28/06/2015 835.71 981.78 1,122.97 830.56 940.90 1,116.99
28/07/2015 863.85 981.78 1,122.97 830.56 939.85 1,116.99
28/08/2015 876.03 977.32 1,128.54 830.56 940.27 1,116.99
28/09/2015 876.03 963.77 1,128.54 830.56 907.26 1,100.94
28/10/2015 803.00 873.25 1,128.54 793.93 844.04 1,100.94
28/11/2015 805.40 950.75 1,128.54 787.05 844.04 1,055.61
28/12/2015 850.52 950.75 1,102.20 787.05 844.04 1,055.61
28/01/2016 769.69 839.94 1,102.20 765.00 839.94 1,055.61
28/02/2016 738.38 808.63 1,092.26 738.38 808.63 1,054.20
28/03/2016 727.70 797.76 1,070.37 727.70 797.76 1,051.22
28/04/2016 723.91 793.48 1,070.37 723.91 793.48 1,030.27
28/05/2016 723.23 877.12 1,037.31 723.23 877.12 1,017.61
28/06/2016 723.23 847.45 1,037.31 723.23 847.45 985.97
28/07/2016 779.39 904.97 1,037.31 758.31 871.54 985.97
28/08/2016 801.37 941.42 1,043.54 769.65 871.54 985.97
28/09/2016 754.64 839.15 1,043.54 744.30 839.15 985.97
28/10/2016 803.54 967.13 1,043.54 741.92 829.42 985.97
28/11/2016 897.18 1,002.63 1,035.64 790.02 907.75 985.97
28/12/2016 951.51 1,031.57 1,035.64 790.02 923.48 985.97
28/01/2017 951.51 1,031.57 1,035.64 833.71 951.58 985.97
28/02/2017 928.48 1,033.40 1,015.43 829.10 935.19 970.67
28/03/2017 922.23 1,016.74 1,019.21 829.10 949.48 970.67
28/04/2017 923.55 1,018.06 994.53 863.31 946.43 970.67
28/05/2017 923.57 1,018.08 994.53 826.52 923.47 979.27
28/06/2017 923.57 1,018.08 994.53 835.76 923.23 979.27
28/07/2017 922.82 1,017.33 994.53 829.91 923.23 979.27
28/08/2017 910.05 1,004.56 988.90 810.11 923.47 979.27
28/09/2017 904.48 1,051.43 988.90 826.73 923.47 979.27
28/10/2017 897.98 1,012.47 988.90 826.73 943.35 978.04
28/11/2017 928.59 1,100.89 988.90 826.73 958.08 978.04
28/12/2017 973.04 1,051.43 988.90 798.72 958.08 957.12
28/01/2018 907.89 1,051.43 988.90 809.32 958.08 960.06
28/02/2018 900.98 1,050.87 1,028.21 810.06 958.08 945.76
28/03/2018 900.98 1,074.65 1,028.21 810.11 958.08 945.76
28/04/2018 1,000.42 1,143.14 1,030.55 788.16 958.08 946.63
28/05/2018 962.53 1,057.04 1,030.93 788.16 958.08 946.63
28/06/2018 953.16 1,033.19 1,070.34 796.99 958.08 946.63
28/07/2018 965.27 1,045.29 1,070.34 826.73 990.66 946.63
28/08/2018 951.33 1,198.37 1,070.50 842.49 990.68 946.54
28/09/2018 1,043.21 1,138.84 1,070.50 920.60 1,067.64 983.86
28/10/2018 1,051.27 1,164.58 1,070.50 920.60 1,107.76 983.86
28/11/2018 1,030.12 1,055.76 1,115.66 946.13 1,055.76 983.86
28/12/2018 1,034.69 1,134.34 1,115.66 902.66 1,109.27 983.86
28/01/2019 1,035.63 1,125.84 1,115.66 941.26 941.26 1,016.48
28/02/2019 1,008.69 1,040.00 1,115.66 929.66 1,040.00 1,023.39
28/03/2019 1,011.22 1,040.00 1,115.66 891.94 1,040.00 1,023.39
28/04/2019 1,024.59 1,228.88 1,115.66 880.20 1,098.83 1,023.39
28/05/2019 943.25 1,089.67 1,224.01 872.57 1,087.91 1,052.46
28/06/2019 932.24 1,015.84 1,224.01 872.57 1,015.84 1,052.46
28/07/2019989.241079.451,224.01846.341,070.101,052.46

More information

At-a-glance summary

Direct debit customers have traditionally been offered the cheapest tariffs, followed by standard credit customers and those using prepayment meters.

After the introduction of the prepayment safeguard tariff in April 2017, the overall cheapest tariffs have continued to be those for direct debit customers. However, the ranking between standard credit and prepayment cheapest tariffs has fluctuated over time. Looking at the whole market, since February 2018 the cheapest prepayment tariff has been less expensive than the cheapest standard credit tariff. Among the six largest suppliers, the cheapest standard credit tariff increased by £54 to £1,070 from £1,016 and remains less expensive than the cheapest prepayment tariff at £1,224.

At the end of July 2019, the cheapest direct debit tariff in the market was £224 less expensive than the cheapest standard credit tariff and £206 less than the cheapest prepayment tariff. The cheapest direct debit tariff has historically been at least £100 less expensive than the cheapest standard credit tariff.

A prepayment price cap was introduced on 1 April 2017, limiting the amount that suppliers can charge their prepayment customers. The default tariff price cap also came into effect on 1 January 2019, limiting the amount that suppliers can charge customers on default tariffs.

Relevance and further information

This indicator helps us understand pricing by payment methods, as well as how much other suppliers are able to compete with the six large suppliers for each method.

Methodology

We calculate the bill values associated with the different tariff types using a ‘typical medium domestic consumer’. As of October 2017, typical domestic consumption values (TDCV) for a medium consumer are 12,000kWh/year for gas and 3,100kWh/year for electricity (profile class 1). The chart includes collective switching tariffs from Q1 2016.

All tariffs shown in the chart are for a dual fuel customer. Dual fuel refers to a situation where a customer takes gas and electricity from the same supplier.

Tariffs with limited availability depending on customer features (for example, tariffs which are only available to new customers, also known as ‘acquisition’ tariffs, or tariffs restricted to certain regions) are excluded from the calculation to make sure that all tariffs considered are generally available to all customers across GB.

Tariffs available with white label suppliers are included in the calculation of the cheapest tariff. White label suppliers are organisations without supply licences that partner with an active licensed supplier to offer gas and electricity using their own brand.

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Chart

Javascript is required to render chart Prepayment price cap and prices since January 2016 (GB).

Source: Energylinx (Until May 2017) & Energyhelpline (June 2017 onwards).

Information correct as of: August 2019

This chart compares trends in prices since 2016 for a dual fuel customer paying prepayment. It shows both the market cheapest tariffs and average standard variable tariffs (SVT) for this payment method. The values are calculated for a customer with typical energy use.

From February 2017 the prices shown in the chart, including the level of the prepayment price cap, are calculated using the latest TDCV values that entered into effect from 1st of October 2017 (see the methodology section for more details).

In practical terms, this means that the tariffs offered after February 2017 are likely to appear slightly lower than those before February 2017.  

Policy Areas:

  • Electricity - retail markets
  • Electricity - wholesale markets
  • Gas - retail markets
  • Gas - wholesale markets

Data Table

Prepayment price cap and prices since January 2016 (GB)
DateSVT - prepayment (market average)Cheapest tariff - prepayment (all suppliers)Prepayment price cap
28/12/2015 1,163.44 1,055.61
28/01/2016 1,163.18 1,055.61
28/02/2016 1,158.61 1,054.20
28/03/2016 1,138.39 1,051.22
28/04/2016 1,131.32 1,030.27
28/05/2016 1,131.32 1,017.61
28/06/2016 1,131.32 985.97
28/07/2016 1,130.22 985.97
28/08/2016 1,130.22 985.97
28/09/2016 1,130.22 985.97
28/10/2016 1,130.22 985.97
28/11/2016 1,122.72 985.97
28/12/2016 1,122.72 985.97
28/01/2017 1,115.77 985.97
28/02/2017 1,061.14 970.67
28/03/2017 1,059.99 970.67
28/04/2017 1,032.30 970.67 1,050.35
28/05/2017 1,032.30 979.27 1,050.35
28/06/2017 1,032.30 979.27 1,050.35
28/07/2017 1,032.69 979.27 1,050.35
28/08/2017 1,031.31 979.27 1,050.35
28/09/2017 1,034.46 979.27 1,050.35
28/10/2017 1,030.60 978.04 1,031.27
28/11/2017 1,030.60 978.04 1,031.27
28/12/2017 1,030.60 957.12 1,031.27
28/01/2018 1,030.72 960.06 1,031.27
28/02/2018 1,030.72 945.76 1,031.27
28/03/2018 1,030.85 945.76 1,031.27
28/04/2018 1,079.09 946.63 1,088.55
28/05/2018 1,086.20 946.63 1,088.55
28/06/2018 1,086.19 946.63 1,088.55
28/07/2018 1,086.08 946.63 1,088.55
28/08/2018 1,086.06 946.54 1,088.55
28/09/2018 1,086.06 983.86 1,088.55
28/10/2018 1,135.42 983.86 1,135.99
28/11/2018 1,135.42 983.86 1,135.99
28/12/2018 1,135.42 983.86 1,135.99
28/01/2019 1,135.23 1,016.48 1,135.99
28/02/2019 1,135.23 1,023.39 1,135.99
28/03/2019 1,135.23 1,023.39 1,135.99
28/04/2019 1,241.44 1,023.39 1,242.07
28/05/2019 1,241.44 1,052.46 1,242.07
28/06/2019 1,241.44 1,052.46 1,242.07
28/07/20191,241.521,052.46 1,242.07
28/08/20191,242.07

More information

At-a-glance summary

In April 2017, the prepayment price cap came into force, limiting the amount that suppliers can charge their prepayment customers. These customers tend to be unable to access the cheapest deals and are also more likely to be in vulnerable circumstances.

The cheapest prepayment tariffs available in the market have remained below the average SVT for a prepayment customer following the introduction of the prepayment price cap. This differential between the average SVT and the cheapest prepayment tariff has remained at £189 between June and July 2019.

On 1 April 2019, the level of the prepayment price cap increased from £1,136 to £1,242 for a dual fuel customer who uses a typical amount of energy. This increase was mainly due to higher wholesale energy costs and network costs.. For more information on the latest updates, see our chart Breakdown of the prepayment price cap.

Relevance and further information

This chart helps us track the differential between the average prepayment SVT and the market cheapest PPM tariff price a customer will pay if they use prepayment to pay their energy bills. Both prices are compared with the prepayment price cap that currently apply to all prepayment customers, excluding those on ‘interoperable’ smart meters.

Customers who get the Government’s Warm Home Discount (WHD) and are on a standard variable or default tariff were protected by a ‘safeguard tariff’ set at the level of the prepayment price cap until the end of 2018, after which they were transferred to the default tariff price cap. The default tariff price cap came into effect on 1 January 2019, limiting the amount that suppliers can charge customers on default tariffs.

The default tariff cap has different levels set to reflect how customers pay, where they live and the type of energy meter they have. When transferred, WHD customers will be placed on the cheaper default cap level set for direct debit payment methods – it won’t matter how they pay.

You can find further information on energy price caps here.

Methodology

  • We calculate the bill values associated with the different tariff types using a ‘typical medium domestic consumer’. As of October 2017, typical consumption values for a medium consumer are 12,000kWh/year for gas and 3,100kWh/year for electricity (profile class 1).  
  • All prices shown are for a dual fuel customer (i.e. where a customer takes gas and electricity from the same supplier).  
  • The market average SVTs are based on the prices of the 12 largest suppliers in the prepayment segment. We have weighted the SVT of each supplier using an estimate of their total share of all prepayment accounts (for prepayment). We update the weightings every six months in January and July to reflect customer numbers four months prior to publication. The time lag is due to data availability. For example, the average given for 28 January 2017 uses weights based on customer numbers at 31 October 2016, while the average for 28 December 2016 uses weights at 31 March 2016.  
  • An SVT refers to a supply contract which is for a period of an indefinite length, and which does not have a fixed-term period applying to any of the terms and conditions. It’s an energy supplier’s basic offer. If a customer does not choose a specific energy plan, for example after their fixed tariff ends, they will be moved onto an SVT until they have chosen a new one. A customer can also make an active choice to select an SVT. 
  • We exclude tariffs with limited availability – such as tariffs only available to new customers (also known as ‘acquisition’ tariffs) or tariffs restricted to certain regions - when calculating the market cheapest tariff. This is so we give a representative picture of tariffs generally available to all customers across GB. 
  • We include tariffs available with ‘white label’ suppliers in our calculation of the cheapest tariffs. White label suppliers are organisations without supply licences that partner with an active licensed supplier to offer gas and electricity using their own brand. 
  • The cheapest tariff shown on the chart includes any collective switching tariffs after the first quarter of 2016. 
  • In all cases, the prices shown are based on suppliers’ tariffs averaged across GB regions. The level of the prepayment price cap is based on the values published on our website, adjusted to reflect current typical domestic consumption values, and to include VAT.

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Chart

Source: Ofgem analysis of data from electricity distribution network operators (DNOs) and Xoserve.

Information correct as of: August 2019

This chart shows the total number of domestic customers switching gas and electricity supplier each month. It also shows, in dotted lines, the number of switches going to medium/small suppliers, as well as the net gains made by these suppliers (from November 2016).

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Number of domestic customers switching supplier by fuel type (GB)
MonthTotal electricity switchesTotal gas switchesSwitches to electricity other suppliersSwitches to gas other suppliersNet gains for electricity other suppliersNet gains for gas other suppliers
01/01/2003326,000266,000
01/02/2003337,000167,000
01/03/2003368,000239,000
01/04/2003351,000216,000
01/05/2003327,000245,000
01/06/2003344,000252,000
01/07/2003365,000260,000
01/08/2003318,000253,000
01/09/2003382,000296,000
01/10/2003370,000290,000
01/11/2003344,000280,000
01/12/2003371,000294,000
01/01/2004273,000303,000
01/02/2004341,000256,000
01/03/2004412,000334,000
01/04/2004341,000283,000
01/05/2004310,000266,000
01/06/2004356,000297,000
01/07/2004323,000275,000
01/08/2004331,000261,000
01/09/2004367,000276,000
01/10/2004406,000338,000
01/11/2004398,000370,000
01/12/2004340,000330,000
01/01/2005243,000281,000
01/02/2005359,000181,000
01/03/2005390,000302,000
01/04/2005384,000341,000
01/05/2005369,000304,000
01/06/2005365,000317,000
01/07/2005330,000271,000
01/08/2005375,000286,000
01/09/2005348,000298,000
01/10/2005416,000301,000
01/11/2005465,000329,000
01/12/2005361,000300,000
01/01/2006284,000290,000
01/02/2006347,000208,000
01/03/2006539,000366,000
01/04/2006418,000345,000
01/05/2006396,000372,000
01/06/2006364,000350,000
01/07/2006360,000295,000
01/08/2006428,000315,000
01/09/2006402,000358,000
01/10/2006429,000356,000
01/11/2006482,000374,000
01/12/2006392,000288,000
01/01/2007352,000346,000
01/02/2007390,000265,000
01/03/2007441,000333,000
01/04/2007392,000301,000
01/05/2007452,000334,000
01/06/2007426,000378,000
01/07/2007441,000352,000
01/08/2007501,000336,000
01/09/2007397,000289,000
01/10/2007477,000383,000
01/11/2007477,000343,000
01/12/2007411,000322,000
01/01/2008335,000344,000
01/02/2008441,000278,000
01/03/2008476,000313,000
01/04/2008438,000388,000
01/05/2008440,000335,000
01/06/2008459,000347,000
01/07/2008474,000361,000
01/08/2008553,000348,000
01/09/2008466,000427,000
01/10/2008478,000347,000
01/11/2008428,000336,000
01/12/2008439,000332,000
01/01/2009290,000331,000
01/02/2009364,000255,000
01/03/2009475,000311,000
01/04/2009423,000298,000
01/05/2009397,000324,000
01/06/2009434,000332,000
01/07/2009442,000327,000
01/08/2009388,000304,000
01/09/2009480,000343,000
01/10/2009455,000336,000
01/11/2009441,000330,000
01/12/2009438,000332,000
01/01/2010259,000307,0006,622
01/02/2010353,000217,0008,884
01/03/2010460,000316,0007,735
01/04/2010379,000307,0009,193
01/05/2010352,000271,0007,564
01/06/2010413,000289,0002,986
01/07/2010398,000292,0003,007
01/08/2010419,000296,0003,928
01/09/2010426,000305,0006,836
01/10/2010409,000305,0004,253
01/11/2010456,000322,00010,827
01/12/2010425,000328,00011,251
01/01/2011270,000279,0003,280
01/02/2011324,000211,0006,340
01/03/2011400,000307,0006,597
01/04/2011360,000246,0004,273
01/05/2011356,000308,0007,479
01/06/2011393,000259,0008,895
01/07/2011397,000301,0008,868
01/08/2011449,000343,00016,021
01/09/2011343,000309,00013,281
01/10/2011326,000247,00019,478
01/11/2011329,000240,00019,854
01/12/2011259,000219,00012,620
01/01/2012210,000194,00022,337
01/02/2012257,000149,00029,128
01/03/2012279,000190,00020,817
01/04/2012232,000176,00012,872
01/05/2012286,000202,00019,167
01/06/2012272,000192,00041,228
01/07/2012257,000190,00018,762
01/08/2012265,000187,00013,366
01/09/2012312,000195,00022,561
01/10/2012366,000273,00072,968
01/11/2012338,000174,00066,652
01/12/2012266,000159,00050,393
01/01/2013228,000157,92943,231
01/02/2013247,000117,96449,082
01/03/2013247,000144,21329,156
01/04/2013251,000186,69029,311
01/05/2013234,000155,03124,985
01/06/2013218,000148,45335,281
01/07/2013232,000160,79331,292
01/08/2013210,000140,74932,638
01/09/2013254,000145,41427,969
01/10/2013381,186213,58971,447
01/11/2013606,061358,799138,394
01/12/2013309,978260,32593,626
01/01/2014214,944188,87093,57973,618
01/02/2014253,295169,946106,70877,109
01/03/2014269,497195,773134,80292,080
01/04/2014252,047201,512133,319104,617
01/05/2014228,628179,604124,802100,417
01/06/2014201,381163,56898,58687,363
01/07/2014219,026145,714104,62573,414
01/08/2014223,581150,623113,96076,153
01/09/2014283,877180,965138,186102,117
01/10/2014309,890232,178118,527108,942
01/11/2014270,603216,783108,79388,088
01/12/2014311,298250,638103,86781,917
01/01/2015190,554155,78973,97758,597
01/02/2015291,341230,518102,44590,566
01/03/2015382,809304,679135,965103,196
01/04/2015272,996214,556108,97679,892
01/05/2015239,574197,166108,49988,984
01/06/2015229,825174,688105,81483,896
01/07/2015239,343192,299108,28786,631
01/08/2015253,099195,183116,63393,783
01/09/2015279,411223,703128,043100,534
01/10/2015349,278274,581161,602121,335
01/11/2015343,870274,206161,034131,736
01/12/2015310,293242,630148,668117,677
01/01/2016245,922189,143139,539109,708
01/02/2016390,645305,057176,036143,238
01/03/2016453,964361,399244,232196,273
01/04/2016386,456273,751204,748151,645
01/05/2016345,146261,324169,711127,352
01/06/2016335,879252,712143,231104,67464,39143,204
01/07/2016303,404221,175140,898103,66270,82950,962
01/08/2016310,132209,178149,026108,99774,44557,084
01/09/2016349,203271,374154,142116,03268,91647,780
01/10/2016486,878384,023150,747118,32820,32816,409
01/11/2016386,585297,468147,607116,24536,64423,680
01/12/2016423,068317,740230,753176,05191,05368,890
01/01/2017319,503239,759203630158,23097,49678,267
01/02/2017398,150296,055220,784173,226107,16787,624
01/03/2017512,855388,103280,224223,528142,155113,040
01/04/2017449,463327,288274,019212,426143,767114,270
01/05/2017414,285304,615251,465193,355124,32799,986
01/06/2017379345315,542198,431166,62787,24076,388
01/07/2017350,660306,437177,209158,63972,36067,784
01/08/2017414,308348,605221,136191,41997,84796,690
01/09/2017520,678454,861276,304242,592155,301140,919
01/10/2017534,746460,559310,969273,286180,672165,424
01/11/2017440,757375,183222,992191,178108,57397,449
01/12/2017385,060325,882298,250196,213111,63099,215
01/01/2018321,560253,513192,655163,57289,56575,444
01/02/2018425,147347,711277,930227,017123,955102,203
01/03/2018443,326374,228221,536213,96298,95985,549
01/04/2018446,530371,819266,409216,622107,63982,419
01/05/2018464,753399,163320,163272,863164,128142,678
01/06/2018455,194388,672348,591298,865218,509188,196
01/07/2018442,406364,991299,457248,923177,140150,162
01/08/2018466,898394,160279,178205,354148,566128,367
01/09/2018525,216433,386329,664266,263163,805140,687
01/10/2018558,583469,695345,347286,553143,789121,562
01/11/2018462,137381,638242,454194,51477,58463,699
01/12/2018390,540338,140254,810206,693107,87577,370
01/01/2019360,286291,442241,517194,79699,07384,169
01/02/2019436,164350,030289,566227,009115,31592,269
01/03/2019585,775486,248403,017330,297191,480164,297
01/04/2019638,176521,932435,937349,720243,455197,349
01/05/2019470,219381,018300,779238,309134,526109,219
01/06/2019422,945336,312243,448186,08879,29165,621

More information

At-a-glance summary

The number of domestic gas and electricity switches generally follows a seasonal pattern (with peaks around March and November then dipping in January and the summer months). Switching has been on the rise since 2014. The number of domestic switches in the 12 months up to June 2019 was 11% higher than in the 12 months up to June 2018 for electricity and 8% higher for gas.  

There has been a break in the usual seasonal switching pattern with the number of switches staying at a relatively constant level for each month since February 2018 instead of falling in the summer months, as we have historically seen. Switching hit historic highs in 2019, with the number of electricity and gas switches reaching a record high in April, before falling off in May, and a further drop in June.

In June 2019 the proportion of net gains in switching away from the six largest suppliers made up 19% of total switches for gas and electricity combined, significantly down from 48% in June 2018.

Relevance and further information

External switching, from one supplier to another, is one measure of consumer engagement with the market. The number of switches to small and medium sized suppliers show how these suppliers are attracting customers over time. For summary information on the switching figures for the year please see also the facts and figures.

Methodology

The number of customers switching supplier shown in the graph is based on the number of meter points a supplier gains from another following a customer choice to change their supplier.

The net gains for small and medium suppliers is calculated by subtracting from the gross meter point gains these suppliers achieve over the month the gross number of meter points these suppliers lose over the same period.

As of July 2017, supply points connected to independent gas transporters are included in the gas data provided by Xoserve.

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Chart

Source: Ofgem analysis of companies’ Consolidated Segmental Statements.

Information correct as of: August 2019

This chart shows the Earnings Before Interest and Tax (EBIT) margins for the generation activities of the six large energy suppliers in the GB market. 

A company’s EBIT margin is their revenue minus their costs, before accounting for taxes and interest. These margins have been divided to highlight variations in profitability for different types of power generation technology.

Policy Areas:

  • Electricity - wholesale markets

Data Table

Large suppliers: Electricity generation profitability by technology type in 2018 (GB)
CompanyNuclearConventionalRenewable
Centrica6.7%1.0%0%
E.ON0%*48.9%
EDF Energy-3.5%-11.7%32.7%
RWE0%-4.4%45.3%
ScottishPower0%2.6%48.6%
SSE0%-1.47%45.94%

More information

Electricity generation profitability by technology type: At-a-glance summary

Profitability of electricity generation for the six large suppliers active in the electricity wholesale market can be shown through analysis of their Consolidated Segmental Statements (CSS). There has been a marked reduction in conventional generator profitability in recent years. On the flip side there has been an increase in renewable generation profitability.  

Relevance and further information

The Earnings Before Interest and Tax (EBIT) margin is a useful indicator of trends in energy company profits. The level of profit in a market is a good measure of how competitive that market is. Here we have shown profitability by power generation technology type to indicate which forms of technology generation are most profitable for generators. 

Methodology

EBIT is calculated by subtracting the total direct costs, total indirect costs (such as operating costs) and depreciation and amortisation for supplying energy from a supplier’s total revenue.

The EBIT margin is calculated by dividing a supplier’s total revenue by the EBIT value. It is expressed as a percentage, so the figure is multiplied by 100.

We have split margins into conventional generation (eg coal, gas, oil), renewables (eg wind, hydro) and nuclear.

The data in this chart may differ from the data that can be found in the supplier’s externally published Consolidated Segmental Statements (CSS). This is because we have made some adjustments to improve comparability. These mostly relate to removing certain impairment and restructuring costs. Detail on these adjustments can be found in Ofgem’s review of 2018 CSS.

Following E.ON’s deconsolidation of Uniper on 31 December 2016, the activities of Uniper UK Limited are not included in E.ON’s UK CSS for 2018. As a result, E.ON’s revenues from conventional generation have significantly decreased from 2016 and E.ON’s EBIT margin from conventional generation is -109.8%. This has not been included directly in the chart as it is not directly comparable with the margins for the other six largest suppliers.   

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Chart

Source: ICIS.

Information correct as of: September 2019

This chart shows the price of electricity on the wholesale market in GB for delivery the next working day at a constant ‘baseload’ rate. The data is averaged by month rather than by day and covers around an eight year time period. Further information on wholesale prices can be found in our State of the Energy Market 2018 report

The data comes from ICIS’s price assessment of over-the-counter trading through brokers. A full explanation of ICIS’s methodology is available on ICIS's website.

Policy Areas:

  • Electricity - wholesale markets

Data Table

Electricity prices: Day-ahead baseload contracts – monthly average (GB)
Month beginningPrice
01/06/201042.18
01/07/201043.53
01/08/201039.95
01/09/201041.12
01/10/201043.5
01/11/201046.4
01/12/201058.03
01/01/201148.43
01/02/201146.47
01/03/201151.41
01/04/201150.88
01/05/201150.27
01/06/201150.82
01/07/201147.96
01/08/201147.36
01/09/201148.32
01/10/201146.83
01/11/201146.15
01/12/201143.54
01/01/201242.17
01/02/201249.1
01/03/201245.64
01/04/201245.91
01/05/201243.79
01/06/201242.24
01/07/201242.71
01/08/201241.21
01/09/201243.39
01/10/201247.6
01/11/201249
01/12/201249.76
01/01/201349.96
01/02/201351.44
01/03/201362.9
01/04/201351.3
01/05/201348.89
01/06/201347.31
01/07/201348.73
01/08/201347.31
01/09/201349.63
01/10/201348.22
01/11/201353.05
01/12/201350.81
01/01/201447.67
01/02/201445.15
01/03/201444.41
01/04/201441.77
01/05/201439.62
01/06/201436.67
01/07/201435.46
01/08/201437.95
01/09/201443.28
01/10/201444.81
01/11/201448.43
01/12/201443.96
01/01/201539.86
01/02/201542.86
01/03/201540.91
01/04/201543.97
01/05/201541.21
01/06/201541.66
01/07/201542.2
01/08/201540.86
01/09/201542.04
01/10/201540.29
01/11/201538.01
01/12/201535.07
01/01/201636.95
01/02/201633.85
01/03/201634.76
01/04/201634.37
01/05/201634.61
01/06/201637.51
01/07/201638.4
01/08/201636.51
01/09/201651.13
01/10/201656.03
01/11/201667.54
01/12/201649.87
01/01/201753.37
01/02/201749.49
01/03/201741.99
01/04/201742.10
01/05/201741.24
01/06/201739.68
01/07/201743.05
01/08/201743.34
01/09/201747.17
01/10/201746.68
01/11/201751.45
01/12/201756.18
01/01/201850.84
01/02/201853.68
01/03/201856.79
01/04/201850.74
01/05/201854.25
01/06/201854.00
01/07/201857.61
01/08/201861.94
01/09/201867.69
01/10/201864.76
01/11/201862.19
01/12/201864.32
01/01/201962.55
01/02/201950.27
01/03/201944.96
01/04/201943.87
01/05/201941.35
01/06/201939.40

More information

Electricity prices (Day-ahead, baseload contracts): At-a-glance summary

Electricity wholesale prices in GB over the past decade have largely been driven by changes in the gas price. This is because gas-fired generation is often the marginal source of supply and hence sets the electricity price. Changes in carbon prices have also influenced electricity prices in recent years.

Relevance and further information

Day-ahead prices are a good indicator of the short-term price of electricity in GB. However, Day-ahead prices are just one measure of the price of electricity. Suppliers will often buy most of their electricity months or even years in advance of when it will be delivered, so Day-ahead prices may not necessarily reflect the price that suppliers will have paid for their electricity.

The ‘baseload’ rate refers to a contract for electricity that is produced continually throughout the day and is distinct from ‘peak rates’ when electricity is bought/sold for consumption at peak times (7am to 7pm).  

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Javascript is required to render chart Gas prices: Day-ahead contracts – monthly average (GB).

Source: ICIS.

Information correct as of: September 2019

This chart shows ‘Day-ahead’ gas prices at the GB gas hub (the National Balancing Point) for delivery the following working day. The data is averaged by month rather than by day and covers Q4 2009 to Q1 2019. Further information on wholesale prices can be found in our State of the Energy Market 2018 report

The data comes from ICIS’s price assessment of over-the-counter trading through brokers. A full explanation of ICIS’s methodology is available on ICIS's website.

Policy Areas:

  • Gas - wholesale markets

Data Table

Gas prices: Day-ahead contracts – monthly average (GB)
Month beginningPrice
01/10/200925.18
01/11/200926.99
01/12/200931.42
01/01/201039.77
01/02/201035.78
01/03/201032.14
01/04/201032.79
01/05/201039.49
01/06/201042.15
01/07/201045.94
01/08/201042.61
01/09/201040.77
01/10/201046
01/11/201049.66
01/12/201062.26
01/01/201155.98
01/02/201153.74
01/03/201160.39
01/04/201157.23
01/05/201157.01
01/06/201158.25
01/07/201155.09
01/08/201154.06
01/09/201153.64
01/10/201156.05
01/11/201158.15
01/12/201156.04
01/01/201254.43
01/02/201265.41
01/03/201258.44
01/04/201259.94
01/05/201257.01
01/06/201255.15
01/07/201255.6
01/08/201254.53
01/09/201260.45
01/10/201264.35
01/11/201265.63
01/12/201265.5
01/01/201366.83
01/02/201368.88
01/03/201386.57
01/04/201369.98
01/05/201366.14
01/06/201360.47
01/07/201365.23
01/08/201364.65
01/09/201365.71
01/10/201365.08
01/11/201368.29
01/12/201369.35
01/01/201465.1
01/02/201458.86
01/03/201456.53
01/04/201449.89
01/05/201445.33
01/06/201439.5
01/07/201437.51
01/08/201440.61
01/09/201448.43
01/10/201450.42
01/11/201454.84
01/12/201453.62
01/01/201546.1
01/02/201550.47
01/03/201547.23
01/04/201546.86
01/05/201544.09
01/06/201543.37
01/07/201543.47
01/08/201539.69
01/09/201541.04
01/10/201539.56
01/11/201535.9
01/12/201534.03
01/01/201632.05
01/02/201629.66
01/03/201629.6
01/04/201629.44
01/05/201630.41
01/06/201634.2
01/07/201634.3
01/08/201630.36
01/09/201628.36
01/10/201642.83
01/11/201648.12
01/12/201646.53
01/01/201753.39
01/02/201751.01
01/03/201741.02
01/04/201739.73
01/05/201739.29
01/06/201734.84
01/07/201736.21
01/08/201742.57
01/09/201746.00
01/10/201745.40
01/11/201752.95
01/12/201758.29
01/01/201850.44
01/02/201858.96
01/03/201864.30
01/04/201850.94
01/05/201855.58
01/06/201854.97
01/07/201857.93
01/08/201862.83
01/09/201873.72
01/10/201866.53
01/11/201864.37
01/12/201863.74
01/01/201957.71
01/02/201947.09
01/03/201939.31
01/04/201934.98
01/05/201931.43
01/06/201927.96

More information

Gas prices (Day-ahead contracts): At-a-glance summary

Day-ahead gas prices have been on a broadly upward trend from mid-Summer 2017. However, since October 2018 prices have followed a downward trend. While changes in commodity prices have influenced gas prices upwards until October 2018, mild weather and healthy supply margins have influenced gas prices downwards in recent months.

Relevance and further information

Day-ahead prices are a good indicator of the short-term price of gas in GB. However, Day-ahead prices are just one measure of the price of gas. Suppliers often buy most of their gas months or even years in advance of when it will be delivered. Therefore, Day-ahead prices may not necessarily reflect the price that suppliers will have paid for their gas.

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Chart

Javascript is required to render chart Customer satisfaction: Ease of contacting supplier (GB).

Information correct as of: August 2019

This chart shows the proportion of domestic energy consumers who found it easy or difficult to contact their supplier as consumers who found it neither easy nor difficult. This chart is updated quarterly.

The data comes from a survey conducted for Ofgem by Accent Research. This survey started in 2018 and is conducted every quarter. We use feedback from this survey to inform compliance engagement with individual suppliers, where appropriate.

The question asked in the survey which relates to this chart is:

Thinking about the last time you tried to contact [supplier name] how easy or difficult did you find it to contact them by your preferred method? 

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Customer satisfaction: Ease of contacting supplier (GB)
QuarterFind it very or fairly easy to contact supplierAre neutral about contacting supplierFind it difficult to contact supplier
Q4 2018612811
Q1 2019612910
Q2 2019592912

More information

Methodology

This data comes from a dedicated energy satisfaction survey commissioned by Ofgem in conjunction with Citizens Advice Bureau. It is a quarterly survey of 3,200 domestic energy consumers around Great Britain. The survey measures consumer satisfaction with their energy supplier across different dimensions of satisfaction such as customer service, billing, contacting suppliers, and switching processes.

Some consumers use different suppliers for electricity and gas. If a consumer has electricity and gas in their home and uses the same supplier for both fuels, then their answers regard that supplier. If they have both fuels but use a different supplier for each, they are randomly allocated to one of the suppliers and they then answer the survey about that supplier. If they have electricity only, then their answers regard their electricity supplier.

The survey commenced in Q4 2018. It uses a mixed mode approach to collect data. In each wave, 300 interviews are completed face to face for those consumers with low or no internet access, while the remainder of the work is conducted via an online survey. 

Ease of contact is answered on a different five point scale, as follows: very difficult, fairly difficult, neither easy nor difficult, fairly easy, and very easy.

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Javascript is required to render chart Customer satisfaction: Switching process (GB).

Information correct as of: August 2019

This chart shows the proportion of domestic energy consumers who have ever switched suppliers who are satisfied or very satisfied with the ease of the switching process. This chart is updated quarterly.

The data comes from a survey conducted for Ofgem by Accent Research. This survey started in 2018 and is conducted every quarter. We use feedback from this survey to inform compliance engagement with individual suppliers, where appropriate.

The questions asked in the survey which relates to this chart are:

Please can you tell me how dissatisfied or satisfied you were with the following aspects of your switch to another supplier:  

Ease of comparing suppliers and their prices

The switching process overall 

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Customer satisfaction: Switching process (GB)
QuarterEase of comparing suppliers (among those who have ever switched supplier)Overall switching process (among those who have ever switched supplier)
Q4 20188185
Q1 20198185
Q2 20197984

More Information

Methodology

This data comes from a dedicated energy satisfaction survey commissioned by Ofgem in conjunction with Citizens Advice Bureau. It is a quarterly survey of 3,200 domestic energy consumers around Great Britain. The survey measures consumer satisfaction with their energy supplier across different dimensions of satisfaction such as customer service, billing, contacting suppliers, and switching processes.

Some consumers use different suppliers for electricity and gas. If a consumer has electricity and gas in their home and uses the same supplier for both fuels, then their answers regard that supplier. If they have both fuels but use a different supplier for each, they are randomly allocated to one of the suppliers and they then answer the survey about that supplier. If they have electricity only, then their answers regard their electricity supplier.

The survey commenced in Q4 2018. It uses a mixed mode approach to collect data. In each wave, 300 interviews are completed face to face for those consumers with low or no internet access, while the remainder of the work is conducted via an online survey. 

All satisfaction metrics are answered on a five point scale: very dissatisfied, dissatisfied, neither satisfied nor dissatisfied, satisfied, and very satisfied.

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Javascript is required to render chart Customer satisfaction: Billing (GB).

Information correct as of: August 2019

This chart shows the proportion of domestic energy consumers who are satisfied or very satisfied with the ease of understanding their energy bill and the accuracy of the bill from their energy supplier. This chart is updated quarterly.

The data comes from a survey conducted for Ofgem by Accent Research. This survey started in 2018 and is conducted every quarter. We use feedback from this survey to inform compliance engagement with individual suppliers, where appropriate.

The questions asked in the survey which relates to this chart are:

Please can you tell me how dissatisfied or satisfied you are with the following aspects of [supplier name]’s bills: 

Ease of understanding the bill

The accuracy of your bill 

Policy Areas:

  • Electricity - retail markets
  • Gas - retail markets

Data Table

Customer satisfaction: Billing (GB)
QuarterEase of Understanding billAccuracy of bill
Q4 20187273
Q1 20197575
Q2 20197173

More Information

Methodology

This data comes from a dedicated energy satisfaction survey commissioned by Ofgem in conjunction with Citizens Advice Bureau. It is a quarterly survey of 3,200 domestic energy consumers around Great Britain. The survey measures consumer satisfaction with their energy supplier across different dimensions of satisfaction such as customer service, billing, contacting suppliers, and switching processes.

Some consumers use different suppliers for electricity and gas. If a consumer has electricity and gas in their home and uses the same supplier for both fuels, then their answers regard that supplier. If they have both fuels but use a different supplier for each, they are randomly allocated to one of the suppliers and they then answer the survey about that supplier. If they have electricity only, then their answers regard their electricity supplier.

The survey commenced in Q4 2018. It uses a mixed mode approach to collect data. In each wave, 300 interviews are completed face to face for those consumers with low or no internet access, while the remainder of the work is conducted via an online survey. 

All satisfaction metrics are answered on a five point scale: very dissatisfied, dissatisfied, neither satisfied nor dissatisfied, satisfied, and very satisfied.

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