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Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by small-sized energy suppliers within eight weeks from when a complaint was reported over the period Q1 2014 to Q2 2018.

 

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by small-sized suppliers within eight weeks (%)

Quarter/YearEcotricity Spark EnergyGood EnergyEconomy EnergyFlow EnergyExtra EnergyBetter Energy
Q1 20141009993
Q2 20141009895100100
Q3 20141009993100100
Q4 201410099100100100
Q1 2015100998678100
Q2 20151009610071100
Q3 20151009791947782100
Q4 201510099931008572100
Q1 201610099919910090100
Q2 2016959987999649100
Q3 2016949981979546100
Q4 2016969986919571100
Q1 2017849997918086100
Q2 2017959994889990100
Q3 2017879984919384100
Q4 2017999793699993100
Q1 201897968592100
Q2 2018929792100
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Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by small-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q1 2014 to Q2 2018.

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by small-sized suppliers by end of next working day (%)

Quarter/YearEcotricity Spark EnergyGood EnergyEconomy EnergyFlow EnergyExtra Energy Better Energy
Q1 201493886437
Q2 2014888264232185
Q3 2014928859243883
Q4 2014818363311993
Q1 20158582592017100
Q2 201584596334102192
Q3 201585706027828100
Q4 2015867853272330100
Q1 2016687651262143100
Q2 201647774243242496
Q3 2016457129541827100
Q4 201657614745165096
Q1 201765645911153971
Q2 2017727043253044100
Q3 201753643431650100
Q4 20175366425306893
Q1 20185862431285073
Q2 2018507041155775
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Chart

Source: Supplier data.

Information correct as of: August 2018

This graph shows the total number of complaints received by the small-sized energy suppliers per 10,000 customer accounts per quarter over the period Q1 2014 to Q2 2018.

 

 

Policy Areas:

  • Domestic consumers

Data Table

Complaints received by small-sized suppliers per 10,000 customer accounts

Quarter/YearEcotricity Spark EnergyGood EnergyEconomy EnergyFlow EnergyExtra Energy Better Energy
Q1 20141919320021
Q2 201425156198131119
Q3 201437195204195144
Q4 201442378227281960
Q1 201554179199345756
Q2 2015477911056316297
Q3 2015297311486347694
Q4 201527811271014311941
Q1 201631104135763811261
Q2 20163010510343686558
Q3 201637945747468257
Q4 2016308642514924050
Q1 20173210581594337124
Q2 201730108101645827110
Q3 2017398769738023910
Q4 20174996727211829720
Q1 201847105631028228114
Q2 20184214953532216
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Chart

Source: Supplier data.

Information correct as of: August 2018

This chart shows the total number of complaints received quarterly by each energy supplier group per 100,000 customer accounts between Q1 2014 and Q2 2018.

We now include Green Star Energy in the group of medium suppliers, as their gas and electricity customer account numbers have each increased above 250k since Q3 2017.

The chart includes estimated data for OVO for the period Q4 2015 - Q1 2018. OVO has provided actual information from Q2 2018 onwards.

Policy Areas:

  • Domestic consumers

Data Table

Complaints received by all suppliers per 100,000 customer accounts (GB)

Quarter/YearBig 6 - Total Medium - Total Small - Total
Q1 2014379626401241
Q2 201436511143992
Q3 2014340410221113
Q4 2014355612051575
Q1 2015359814161029
Q2 201529051001652
Q3 201526311037689
Q4 201521171164891
Q1 201619711533884
Q2 201618691615685
Q3 201617451618659
Q4 2016182719931015
Q1 2017198323101286
Q2 2017195919891103
Q3 2017201617191023
Q4 2017190216611132
Q1 2018196315011132
Q2 2018204614521171
close

Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by medium-sized energy suppliers within eight weeks from when a complaint was reported over the period Q1 2014 to Q2 2018.

We now include Green Star Energy in the group of medium-sized suppliers, as their gas and electricity customer account numbers have each grown above 250k since Q3 2017.

The chart includes estimated data for OVO for the period Q4 2015 - Q1 2018. OVO has provided actual information from Q2 2018 onwards.

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by medium-sized suppliers within eight weeks (%)

Quarter/YearCo-OperativeFirst UtilityOvoUtilitaUtility WarehouseGreen Star Energy
Q1 2014989199999996
Q2 20149981999999100
Q3 20149874999999100
Q4 20149978959910099
Q1 20159881969910084
Q2 20159385999910086
Q3 20159084991009774
Q4 201593801001009889
Q1 2016918099999982
Q2 20169484100999783
Q3 201681881001009882
Q4 20168789100999770
Q1 20179189100989887
Q2 20179688100989982
Q3 201794901001009790
Q4 201795851001009575
Q1 20189587100989590
Q2 2018959099959786
close

Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by the six large energy suppliers within eight weeks from when a complaint was reported over the period Q1 2013 to Q2 2018.

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by the six large suppliers within eight weeks (%)

Quarter/YearBritish GasEDF energyEonnPowerScottish PowerSSE
Q1 2013969798979896
Q2 2013949599979896
Q3 2013949697979895
Q4 2013969787969796
Q1 2014969794949497
Q2 2014969793949397
Q3 2014949694978697
Q4 2014949795977997
Q1 2015959794978797
Q2 2015939692959597
Q3 2015929791959598
Q4 2015919891929797
Q1 2016919890869596
Q2 2016909890919896
Q3 2016919889929896
Q4 2016919791929796
Q1 2017909792929596
Q2 2017909793909496
Q3 2017899793919796
Q4 2017909694929795
Q1 2018909594929795
Q2 20189294939195
close

Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by medium-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q1 2014 to Q2 2018.

We now include Green Star Energy in the group of medium-sized suppliers, as their gas and electricity customer account numbers have each grown above 250k since Q3 2017.

The chart includes estimated data for OVO for the period Q4 2015 - Q1 2018. OVO has provided actual information from Q2 2018 onwards.

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by medium-sized suppliers by end of next working day (%)

Quarter/YearCo-OperativeFirst UtilityOvoUtilitaUtility WarehouseGreen Star Energy
Q1 20146515708291
Q2 20145142806588
Q3 20144125758392
Q4 20143550718695
Q1 20154948738995
Q2 20155152839582
Q3 2015345069956937
Q4 2015334887928119
Q1 2016354585828617
Q2 2016274791867927
Q3 2016306496848232
Q4 2016245698897928
Q1 2017436498907528
Q2 2017446096946528
Q3 2017584997945028
Q4 2017564596935021
Q1 2018575491864843
Q2 2018575991734537
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Chart

Source: ICIS.

Information correct as of: November 2018

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 Wholesale Energy Markets in 2016 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

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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Chart

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

Source: ICIS.

Information correct as of: November 2018

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 Q2 2018. Further information on wholesale prices can be found in our Wholesale Energy Markets in 2016 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

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. Changes in oil prices have influenced gas prices 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

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the percentage of complaints resolved by the six large energy suppliers by the end of the next day from when a complaint was reported over the period Q1 2013 to Q2 2018.

Policy Areas:

  • Domestic consumers

Data Table

Complaints resolved by the six large suppliers by end of next working day (%)

Quarter/YearBritish GasEDF energyEonnPowerScottish PowerSSE
Q1 2013799193876375
Q2 2013728993876565
Q3 2013728389896272
Q4 2013768281905073
Q1 2014808482865082
Q2 2014788480815185
Q3 2014778481855186
Q4 2014758782894985
Q1 2015758481884887
Q2 2015707678744788
Q3 2015687875695288
Q4 2015577970635584
Q1 2016577768394977
Q2 2016528063485477
Q3 2016547959585975
Q4 2016517364505874
Q1 2017507467495876
Q2 2017507168465776
Q3 2017516971455976
Q4 2017486269405774
Q1 2018515969406274
Q2 2018535869425976
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Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the total number of complaints received by the medium-sized energy suppliers per 100,000 customer accounts per quarter over the period Q1 2014 to Q2 2018.

The chart includes estimated data for OVO for the period Q4 2015 - Q1 2018. OVO has provided actual information from Q2 2018 onwards.

We now include Green Star Energy in the group of medium-sized suppliers, as their gas and electricity customer account numbers have each grown above 250k since Q3 2017.

 

 

Policy Areas:

  • Domestic consumers

Data Table

Complaints received by medium-sized suppliers per 100,000 customer accounts

Quarter/YearCo-OperativeFirst UtilityOvoUtilitaUtility WarehouseGreen Star Energy
Q1 20143491182134512251949
Q2 20144869568393601845
Q3 20144179496494471772
Q4 201424797863112142117
Q1 2015284122768912382711
Q2 201554810696257031611
Q3 2015127012125797271322540
Q4 20151069109252614671992752
Q1 20161223135466823792769862
Q2 20168401002919465220071157
Q3 201665610911563336817831400
Q4 201656314792560384013851191
Q1 20176912052241956851073888
Q2 2017786188211876005742430
Q3 20171121183712364146601657
Q4 2017106617429084294615666
Q1 2018120121226873018631859
Q2 20181292268891413895651540
close

Chart

Source: Suppliers data.

Information correct as of: August 2018

This graph shows the total number of complaints received by the six large energy suppliers per 100,000 customer accounts per quarter over the period Q1 2013 to Q2 2018.

Policy Areas:

  • Domestic consumers

Data Table

Complaints received by the six large suppliers per 100,000 customer accounts

Quarter/YearBritish GasEDF energyEonnPowerScottish PowerSSE
Q1 2013229577843170491815191376
Q2 2013169659463320562616111532
Q3 2013158246462936686713301335
Q4 2013241242283225801313991686
Q1 2014308446143758830313572760
Q2 2014284450113921689016483081
Q3 2014272542763482625820312985
Q4 2014282553413352656820692813
Q1 2015305141083695563526483474
Q2 2015250727123237333827203357
Q3 2015214126392539289827193475
Q4 2015171423842080209524122594
Q1 2016186625062039167422121751
Q2 2016157425331720205623181665
Q3 2016151823531643160522521577
Q4 2016155522231839187424421598
Q1 2017146324382250220024931929
Q2 2017139323562211198626232079
Q3 2017130424062553199628132070
Q4 2017105021782573179431611875
Q1 201888322592607212435811942
Q2 2018122122352415207034792117
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Chart tips: Click on titles in a chart legend to switch data series on and off. View and sort chart numbers using the chart’s ‘data table’ tab, or download data in a variety of formats including images using the menu buttonmenu button