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Electricity & gas · Greece
Checked 2026-09-30

🔗 New or bigger grid connection in Greece: how long may it take and who do I complain to?

The short answer

A new home, a heat pump, a charging point or solar panels can need a new or bigger connection. The grid operator does this work, and many countries set deadlines and rules on costs.

📜 The rules in Greece

Grid connection

For a new electricity connection you apply to HEDNO and pay the application fee. HEDNO sends a connection offer, you sign the contract and pay, then it installs the meter. HEDNO must complete it within 4 to 60 working days, depending on the works needed.

  • For natural gas, the network operator must answer your request within 21 working days. The connection offer is valid for 30 days, and the meter must be installed within 60 calendar days after you sign the connection agreement. (raaey.gr)
ΔΕΔΔΗΕ (HEDNO)New connections: service points and call centre (also +30 211 190 0500).📞 11500🔗 deddie.gr
Official source: raaey.gr · Checked 2026-09-30

🪜 Step by step

  1. Apply to the grid operatorApply to the grid operator for your address, not your supplier. Say what you want to connect and the capacity you need.
  2. Ask for a quote and a dateThe grid operator should tell you the cost and when the work will be done. See the rules for Greece below.
  3. Keep track of deadlinesWrite down the dates. If a deadline is missed, ask why in writing.
  4. Complain if it goes wrongComplain to the grid operator first, then to the body named below.

📇 Who to contact

ΔΕΔΔΗΕ (HEDNO)New connections: service points and call centre (also +30 211 190 0500).📞 11500🔗 www.deddie.gr
ΔΕΔΔΗΕ (HEDNO) — Όλη η χώραRuns the local grid, meters and connectionsPower cut, meter problem, new connection📞 800 400 4000🔗 www.deddie.gr/en/faults-and-outages/fault-report
Ρυθμιστική Αρχή Αποβλήτων, Ενέργειας και Υδάτων (ΡΑΑΕΥ) – Κλάδος ΕνέργειαςSupervises energy companies and explains your rightsFor information, and to report a company that breaks the rules📞 210-3727400🔗 www.raaey.gr/energeia
Συνήγορος του Καταναλωτή (Hellenic Consumer's Ombudsman)Settles disputes with energy companiesWhen the company has not solved your complaint📞 210 6460862🔗 www.synigoroskatanaloti.gr/en/energy-and-water

❓ Questions

Who pays for the connection?

Usually the customer pays a connection charge set by the grid operator or the regulator.

Why does my grid operator refuse or delay?

Sometimes the local grid is full. Ask for the reason and the expected date in writing.

Do I need a new connection for solar panels?

Often not for small systems, but you usually have to register them with the grid operator.

📎 Sources

Checked: 2026-09-30

🧭 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.

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