How to file a complaint with energy company Oxxio: the official channel, the deadline, and where to escalate (Geschillencommissie Energie) if it isn't resolved.
Onderdeel Eneco Groep. Tel 088 895 59 99. Post: Postbus 100, 3000 AC Rotterdam. Daarna GC Energie.
Source: oxxio.nl · verified 2026-05-29
Use the official channel above. Include your customer number, the connection (address or EAN) and what's wrong.
Oxxio must handle your complaint. No reply, or no satisfactory reply, within about 8 weeks? Then you can escalate.
Bring your dispute to the Geschillencommissie Energie within 12 months of your complaint. Small filing fee, refunded if you win.
If Oxxio doesn't resolve your complaint, you can take it to:
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