* SSE's retail business was acquired by OVO in January 2020.
According to the source, the category ‘large’ refers to suppliers whose market share exceeds five percent in at least one fuel.
A significant number of customer accounts that were moved to a new supplier under a Supplier of Last Resort (SoLR) process in the latter half of 2021 are not yet included in the data for Q4 2021, and to a lesser extent, Q3 2021. Â
** Not one of the Great Britain's Big Six energy suppliers.
Citation formats
Quarterly complaints resolved by large suppliers within eight weeks in GB 2021-2024
Out of the largest energy suppliers in Great Britain, EDF Energy had the highest rate of resolving customer complaints within eight weeks in the first quarter of 2024. Over the last three years, the company resolved at least ** percent of all complaints received per quarter. E.ON ranked second.
Profit from the additional features of your individual account
Currently, you are using a shared account. To use individual functions (e.g., mark statistics as favourites, set
statistic alerts) please log in with your personal account.
If you are an admin, please authenticate by logging in again.
Learn more about how ÌÇÐÄÆƽâ°æ can support your business.
Ofgem. (May 15, 2024). Share of quarterly complaints resolved within eight weeks by the largest energy suppliers in Great Britain from 1st quarter 2021 to 1st quarter 2024 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/
Ofgem. "Share of quarterly complaints resolved within eight weeks by the largest energy suppliers in Great Britain from 1st quarter 2021 to 1st quarter 2024." Chart. May 15, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/
Ofgem. (2024). Share of quarterly complaints resolved within eight weeks by the largest energy suppliers in Great Britain from 1st quarter 2021 to 1st quarter 2024. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/
Ofgem. "Share of Quarterly Complaints Resolved within Eight Weeks by The Largest Energy Suppliers in Great Britain from 1st Quarter 2021 to 1st Quarter 2024." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 15 May 2024, /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/
Ofgem, Share of quarterly complaints resolved within eight weeks by the largest energy suppliers in Great Britain from 1st quarter 2021 to 1st quarter 2024 ÌÇÐÄÆƽâ°æ, /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/ (last visited July 20, 2026)
Share of quarterly complaints resolved within eight weeks by the largest energy suppliers in Great Britain from 1st quarter 2021 to 1st quarter 2024 [Graph], Ofgem, May 15, 2024. [Online]. Available: /statistics/429336/big-six-complaints-resolved-within-eight-weeks-uk/
