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Money · Slovenia
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, Agencija za energijo — reševanje sporov (02 234 14 14) is the independent body for energy disputes in Slovenia: free, and the supplier has to take part. Agencija za energijo — nadzor (agen-rs.si) 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 firstAgencija za energijo — reševanje sporov
Report toAgencija za energijo — nadzor
If that failsZveza potrošnikov Slovenije (ZPS)

🗣️ 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 Agencija za energijo — reševanje sporovAfter the supplier's deadline passes (typically 4–8 weeks) or the answer is a refusal. The procedure is free.
  5. Practices, not bills: Agencija za energijo — nadzorUnfair tariff changes, aggressive sales, switching without consent — that is for the regulator.

📇 All contacts

Agencija za energijo — reševanje sporovDecides customer–supplier disputesAfter complaining to the supplier without a solution📞 02 234 14 14🔗 www.agen-rs.si/odjemalci
Agencija za energijo — nadzorRegulator, complaints about supplier practicesSwitching without consent, unfair terms🔗 www.agen-rs.si
Zveza potrošnikov Slovenije (ZPS)Free advice on contracts and billsIf you are not sure the bill is wrong📞 01 474 06 00🔗 www.zps.si

❓ 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 Agencija za energijo — nadzor and your old supplier; the contract can be reversed.

📎 Sources

Last checked: 2026-09-26

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

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🧭 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→

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