Compare supplier performance on complaints

This graph shows the percentage of complaints resolved by large energy suppliers by the end of the next day from when a complaint was reported over the period Q1 2013 to Q4 2020.

The category ‘large’ refers to those suppliers whose market share exceeds 5% in at least one fuel. We have been using this categorisation since Q3 2020 as explained here. As a result, Bulb and Octopus Energy, previously considered medium-sized suppliers, were moved to the large supplier category from Q3 2020.

This graph shows the percentage of complaints resolved by large suppliers within eight weeks from when a complaint was reported over the period Q1 2013 to Q4 2020.

The category ‘large’ refers to those suppliers whose market share exceeds 5% in at least one fuel. We have been using this categorisation since Q3 2020 as explained here. As a result, Bulb and Octopus Energy, previously considered medium-sized suppliers, were moved to the large supplier category from Q3 2020.

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 Q4 2020. 

The category ‘medium’ refers to those suppliers exceeding 1% market share in at least one fuel but remaining below 5% in both fuels. We have been using this categorisation since Q3 2020 as explained here. As a result, Bulb and Octopus Energy, previously considered medium-sized suppliers, were moved to the large supplier category from Q3 2020.

In January 2021, Green Network Energy ceased trade and Ofgem appointed EDF as the supplier of last resort. This will be reflected in the next quarterly update.

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 Q4 2020. 

The category ‘medium’ refers to suppliers exceeding 1% market share in at least one fuel but remaining below 5% in both fuels. We have been using this categorisation since Q3 2020 as explained here. As a result, Bulb and Octopus Energy, previously considered medium-sized suppliers, were moved to the large supplier category from Q3 2020.

In January 2021, Green Network Energy ceased trade and Ofgem appointed EDF as the supplier of last resort. This will be reflected in the next quarterly update.

This graph shows the total number of complaints received by a selection of small-sized energy suppliers per 10,000 customer accounts per quarter over the period Q1 2014 to Q4 2020.

This graph shows the total number of complaints received by a selection of small-sized energy suppliers per 10,000 customer accounts per quarter over the period Q3 2015 to Q4 2020.

Nabuh Energy miscalculated the volume of received complaints between Q3 2018 and Q2 2020 and have started providing corrected data from Q3 2020.

This graph shows the total number of complaints received by a selection of small-sized energy suppliers per 10,000 customer accounts per quarter over the period Q1 2016 to Q4 2020.

Simplicity Energy had not submitted Q4 2020 data prior to the publication deadline. In January 2021, Simplicity ceased to trade and Ofgem appointed British Gas as the supplier of last resort. This will be reflected in the next quarterly update.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q1 2014 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q1 2014 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q3 2015 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers by the end of the next working day from when a complaint was reported over the period Q1 2016 to Q4 2020.

Simplicity Energy had not submitted Q4 2020 data prior to the publication deadline. In January 2021, Simplicity ceased to trade and Ofgem appointed British Gas as the supplier of last resort. This will be reflected in the next quarterly update.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers within eight weeks from when a complaint was reported over the period Q1 2014 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers within eight weeks from when a complaint was reported over the period Q1 2014 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers within eight weeks from when a complaint was reported over the period Q3 2015 to Q4 2020.

This graph shows the percentage of complaints resolved by a selection of small-sized energy suppliers within eight weeks from when a complaint was reported over the period Q1 2016 to Q4 2020.

Simplicity Energy had not submitted Q4 2020 data prior to the publication deadline. In January 2021, Simplicity ceased to trade and Ofgem appointed British Gas as the supplier of last resort. This will be reflected in the next quarterly update.