Supplier A complaints: Ofgem rank 7 of 16
Ofgem publishes how many complaints every UK energy supplier picks up per 100 customer accounts, and how many they clear by the next working day. In 2026 Q2, Supplier A scored 3.4 out of 5 in our index of that data, with 3.5 complaints per 100 accounts. Here’s how that compares with the rest of the market.
Data last updated: Ofgem 2026 Q2
View source on ofgem.gov.ukRating
Scored from Ofgem’s published figures using our documented weightings.
3.5
Lower is better. Rank 7 of 16. The 15-supplier average was 4.35.
85%
Higher is better - the share of complaints fixed fast. The 16-supplier average was 82%.
Where that sits in the market
Across the 15 suppliers Ofgem published for 2026 Q2, Supplier C had the fewest complaints per 100 accounts at 1.2 and Supplier E the most at 8. See the full league table.
So what do you do about it?
This page is the scoreboard. The route that actually gets you somewhere - who to write to at Supplier A, how long they get, and who picks it up when they run out of time - is on the Supplier A complaints guide. They’re counting on you not bothering.
Common questions about the data
What is Supplier A's complaints score in the Ofgem data?
Supplier A ranks 7 of 16 UK energy suppliers in our index of Ofgem's 2026 Q2 figures, scoring 3.4 out of 5. Rank 1 is the supplier with the best combined record on complaint volume and next-working-day resolution. The weightings behind the score are published on our methodology page.
How many complaints does Supplier A get per 100 customers?
Ofgem recorded 3.5 complaints per 100 customer accounts for Supplier A in 2026 Q2. The average across the 15 suppliers Ofgem published for the period was 4.35, so Supplier A sits below that average. Lower is better here: it means fewer customers had something to complain about.
How quickly does Supplier A resolve complaints?
Supplier A resolved 85% of complaints by the end of the next working day in 2026 Q2, on Ofgem's figures. Across the 16 suppliers reporting that measure, the average was 82%. Higher is better.
Is Supplier A better or worse than other UK energy suppliers for complaints?
On Ofgem's 2026 Q2 figures, Supplier A recorded 3.5 complaints per 100 customer accounts. For context, the best of the 15 reporting suppliers was Supplier C on 1.2 complaints per 100 accounts and the worst was Supplier E on 8. Fewer complaints is better.
What period does this Supplier A complaints data cover?
These are Ofgem Retail Market Indicators for 2026 Q2, covering 1 April 2026 to 30 June 2026, published under the Open Government Licence v3.0. Ofgem publishes new figures each quarter and this page updates with them.
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Source: Ofgem Retail Market Indicators, 2026 Q2 (1 April 2026 to 30 June 2026). Published under the Open Government Licence v3.0.