ComplaintCensus

Octopus Energy Italia 🇮🇹 vs E.ON Energia: most-reported complaints compared

Most-reported issues at Octopus Energy Italia 🇮🇹 and E.ON Energia, 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.

Octopus Energy Italia 🇮🇹

TrustScore 4.9 · 55,260 reviews on Trustpilot.

105 reviews analysed, 2024-02-01 to 2026-08-18.

Complaint rate (recent window): 1%

99% of negative reviews get a company reply.

Poor core service33%
Billing errors33%
“most of my emails have been completely ignored.”
1★ Trustpilot review, 2024-02-01

E.ON Energia

TrustScore 4.8 · 10,128 reviews on Trustpilot.

55 reviews analysed, 2020-02-10 to 2026-09-18.

Complaint rate (recent window): 47%

100% of negative reviews get a company reply.

Support unhelpful65%
Billing errors38%
Missed appointments15%
Support unreachable15%
Overcharging12%
“live chat is broken, app doesn't work”
1★ Trustpilot review, 2020-06-05

Reported on both

Issues with an evidenced category (at least two verbatim quotes) on both sides.

IssueOctopus Energy Italia 🇮🇹E.ON Energia
Billing errors33%38%

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, Octopus Energy Italia 🇮🇹 or E.ON Energia.