E.ON Next Energy Ltd vs Insite Energy: most-reported complaints compared
Most-reported issues at E.ON Next Energy Ltd 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.
E.ON Next Energy Ltd
TrustScore 4.5 · 234,233 reviews on Trustpilot.
3,507 reviews analysed, 2026-07-04 to 2026-09-26.
Complaint rate (recent window): 12%
100% of negative reviews get a company reply.
“Took them 6 months and utterly unhelpful the whole way blaming everyone apart from themselves.”
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 | E.ON Next Energy Ltd | Insite Energy |
|---|---|---|
| Support unhelpful | 31% | 36% |
| Billing errors | 19% | 22% |
| Support unreachable | 11% | 38% |
| Account/app problems | 9% | 14% |
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, E.ON Next Energy Ltd or Insite Energy.