← FFCheckWho do I contact?CS
Money · Czechia
Updated September 2026

⚡ My energy bill is wrong and the supplier won't fix it — who do I complain to?

Direct answer

First a written complaint to the supplier — they must answer within a set time, and most disputes end here once you ask for the meter readings behind the bill. If they do not solve it, Energetický regulační úřad (ERÚ) (564 578 666) is the independent body for energy disputes in Czechia: free, and the supplier has to take part. ERÚ — podněty na praktiky (eru.cz) is the regulator that supervises suppliers and takes complaints about practices, not individual bills. Pay the undisputed part meanwhile — that keeps your supply on.

Call firstEnergetický regulační úřad (ERÚ)
Report toERÚ — podněty na praktiky
If that failsdTest — energetická poradna

🗣️ What to say

"Contract [number], invoice [number] of [date]. The billed consumption of … kWh does not match my meter reading of … on [date]. I dispute the invoice and ask for a corrected bill within 4 weeks. I will pay the undisputed amount of €… in the meantime."

🪜 Step by step

  1. Read your meterPhoto with the date. Compare with the readings on the bill; estimated readings are marked as such.
  2. Complain in writingTo the supplier's complaints address, with the contract number. Ask for the correction and a written answer.
  3. Pay what is undisputedIt protects you from disconnection and shows good faith.
  4. Go to Energetický regulační úřad (ERÚ)After the supplier's deadline passes (typically 4–8 weeks) or the answer is a refusal. The procedure is free.
  5. Practices, not bills: ERÚ — podněty na praktikyUnfair tariff changes, aggressive sales, switching without consent — that is for the regulator.

📇 All contacts

Energetický regulační úřad (ERÚ)Decides customer–supplier disputes, market supervisionAfter complaining to the supplier without a solution📞 564 578 666🔗 www.eru.cz/spotrebitel
ERÚ — podněty na praktikyUnfair practices, switching without consentWhen it is about supplier conduct, not one bill🔗 www.eru.cz/podnet
dTest — energetická poradnaFree advice on contracts and billsIf you are not sure the bill is wrong📞 299 149 009🔗 www.dtest.cz/energie

❓ Frequently asked

Can they cut me off during the dispute?

Not for a disputed amount that is with the ombudsman, and never without notice. Pay the undisputed part and say so in writing.

They estimated my consumption for a year

You can demand a bill based on actual readings. Give the reading with a dated photo; the difference must be corrected.

I was switched without agreeing

That is a regulator matter. Contact ERÚ — podněty na praktiky and your old supplier; the contract can be reversed.

📎 Sources

Last checked: 2026-09-26

🔎 Common searches

Recognise your own search? The answer above covers all of these.

  • “energy bill too high complaint Czechia”
  • “energy ombudsman Czechia”
  • “dispute electricity bill”
  • “gas bill wrong what to do”
  • “energy regulator complaint”

🧭 Is this still correct?

We check this information carefully, but phone numbers, websites and rules change — and sometimes we get something wrong. Spotted a mistake or a change? Let us know below.

🔗 Related questions

📦Faulty goods, no refund→⚡Power outage→💳Scammed online→🎯Phishing message→

Your tools for Czechia

Before it goes wrongCan I?What is allowed, what is not, which permit you need — with the official source.Energy · CzechiaElectricity & gasThe rules that protect you as an electricity and gas customer in Czechia, and who to contact. Every fact is checked on an official source.Recognise it firstIs dit veilig?Check a phone number, website or message against 47,000 scam dossiers.