EDF UK vs Insite Energy: most-reported complaints compared
Most-reported issues at EDF UK and Insite Energy, according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
EDF UK
TrustScore 4.8 · 258,869 reviews on Trustpilot.
3,614 reviews analysed, 2026-03-25 to 2026-09-26.
Complaint rate (recent window): 4%
100% of negative reviews get a company reply.
“they sent post of final bill too wrong address then i had a letter of debt agency saying i owed money”
Insite Energy
TrustScore 4.7 · 4,394 reviews on Trustpilot.
314 reviews analysed, 2025-10-03 to 2026-09-17.
Complaint rate (recent window): 5%
98% of negative reviews get a company reply.
“Email: Replies require a ridiculous 9 business days, rendering this channel useless for urgent issues.”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | EDF UK | Insite Energy |
|---|---|---|
| Support unhelpful | 50% | 36% |
| Billing errors | 29% | 22% |
| Support unreachable | 17% | 38% |
| Account/app problems | 8% | 14% |
| Missed appointments | 8% | 8% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, EDF UK or Insite Energy.