ChartJavascript is required to render chart Complaints received by medium-sized suppliers per 100,000 customer accounts.Source: Suppliers data.Information correct as of: November 2020 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 Q3 2020. The category ‘medium’ refers to those suppliers exceeding 1% market share in at least one fuel, but remaining below 5% in both fuels. In Q3 2020 Bulb and Octopus Energy, previously considered medium-sized suppliers, have moved to the large supplier category. As of Q3 2020, Shell Energy’s complaints include those for Green Star Energy, which Shell acquired in Q4 2019. The chart includes estimated data for OVO for the period Q4 2015 - Q1 2018. OVO has provided actual information from Q2 2018 onwards. In January 2020, OVO completed the acquisition of SSE’s domestic business. As a result, we have moved OVO from the group of medium-sized supplier to that of large suppliers as of Q1 2020. As of Q1 2020, Octopus’ complaints include those for all companies they have recently absorbed and their white label brands. These include Engie’s domestic business and Co-operative Energy, among others. Affect Energy, also fully owned by Octopus, operates under a separate licence and is therefore shown separately as of Q1 2020. Policy Areas:Domestic consumers Data Table Complaints received by medium-sized suppliers per 100,000 customer accounts Quarter/YearAvro EnergyShell EnergyOVO - End Q4 2019UtilitaUtility WarehouseOctopus Energy - End Q2 2020Bulb - End Q2 2020Green Network Energy Q1 20141182134512251949 Q2 20149568393601845 Q3 20149496494471772 Q4 201497863112142117 Q1 2015122768912382711 Q2 201510696257031611 Q3 201512125797271322 Q4 20151092526146719920 Q1 20161354668237927690 Q2 20161002919465220070 Q3 2016109115633368178310 Q4 201614792560384013854 Q1 201720522419568510732 Q2 201718821187600574264 Q3 201718371236414660126 Q4 20171742908429461539 Q1 20182122687301863170 Q2 20182688914138956522963 Q3 2018482639803939781132110721 Q4 20187230399191040915168283654 Q1 201986295110168781,090239251517 Q2 2019761,6881,3755361,063233320722 Q3 20191051,8711,4675411,147266383692 Q4 20191601,6932,2116151,352254407851 Q1 20202411478763743450689913 Q2 202014216675174714751,065869 Q3 20201472,2475875601,722 Date correct November 2020 Policy area Domestic consumers