Summary
Details
- Greece
Binding for electricity suppliers, producers, aggregators, market operators, and grid operators.
They must:
Participate in the Day-Ahead, Intraday and Balancing Markets according to regulatory rules.
Submit forecasts, schedules and technical data to market operators.
Comply with grid-code requirements for RES and conventional assets.
Provide transparent retail offers and respect consumer-protection rules.
Exceptions:
Small autonomous systems (e.g. some islands) may operate under adapted market rules until grid interconnection is complete.
Micro-producers or self-consumers may face simplified obligations.
Deep dive
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What’s Required
Law 4643/2019 introduces major reforms to Greece’s electricity market in alignment with the EU Clean Energy Package and the transition to a target electricity model. It restructures wholesale and retail markets, strengthens competition, and supports renewable energy integration.
The law:
Establishes the four fundamental electricity markets: Day-Ahead Market, Intraday Market, Balancing Market, and Forward Market.
Sets rules for market coupling with European electricity markets.
Strengthens consumer rights and retail competition.
Requires distribution and transmission operators to implement modern grid management, smart metering and RES integration tools.
Defines obligations for suppliers on transparency, pricing and renewable energy participation.
Important Deadlines
Market transition occurred largely in 2020, with phased implementation continuing through 2021–2024.
Full coupling with EU markets finished progressively, linking Greece to broader regional power exchanges.
Current Status
The law is in full effect, with ongoing refinement by the Regulatory Authority for Energy. Market coupling has increased liquidity, competition and RES penetration but has also introduced volatility requiring improved forecasting and flexibility.
Penalties
Fines for market manipulation, bidding-rule violations or inadequate forecasting.
Sanctions for retail suppliers breaching consumer rights.
Grid-code violations can lead to operational restrictions or suspension.
Examples of Known Violations
Enforcement actions addressing wholesale market behaviour and balancing market inaccuracies.
Retail suppliers sanctioned for misleading tariffs or incorrect billing practices.
Resources
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