How to file a complaint with energy company ENGIE: the official channel, the deadline, and where to escalate (Geschillencommissie Energie) if it isn't resolved.
Tel 088-8954000. E-mail klantenservice.nl@engie.com. Post: Postbus 10087, 8000 GB Zwolle. Daarna GC Energie.
Source: engie.nl · verified 2026-05-29
Use the official channel above. Include your customer number, the connection (address or EAN) and what's wrong.
ENGIE 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 ENGIE doesn't resolve your complaint, you can take it to:
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