Our Data Sources
Transparent information about where we get our data and how we ensure its accuracy and reliability.
Overview
At Logariasmo.gr, we believe that the quality of our recommendations depends entirely on the quality of our data. That's why we source all our information from official, authoritative sources and maintain rigorous standards for data accuracy and timeliness.
Our data comes from three main categories: regulatory authorities, energy exchanges, and direct supplier information. Each source is carefully vetted and regularly updated to ensure the most current and accurate information.
RAE - Regulatory Authority for Energy
What is RAE?
The Regulatory Authority for Energy (Ρυθμιστική Αρχή Ενέργειας - ΡΑΕ) is Greece's independent regulatory body responsible for overseeing the electricity and natural gas markets. Established in 2000, RAE ensures fair competition, protects consumer interests, and promotes market efficiency.
Data We Use from RAE
Network Charges
- Transmission network charges
- Distribution network charges
- Network access fees
- Connection charges
Regulatory Framework
- Tariff structures
- Market rules and regulations
- Consumer protection measures
- Licensing requirements
Market Monitoring
- Market concentration analysis
- Price monitoring reports
- Competition assessments
- Annual market reports
How We Access RAE Data
- Public Publications: Official announcements, decisions, and reports published on RAE's website
- Regulatory Decisions: Published decisions on tariff approvals and market rules
- Annual Reports: Comprehensive market analysis and regulatory activity reports
- Consultation Documents: Public consultations on proposed regulatory changes
Update Frequency
RAE data is updated as follows:
- Network Charges: Quarterly updates, with immediate updates for significant changes
- Regulatory Decisions: Real-time updates when decisions are published
- Market Reports: Annual comprehensive reports with quarterly updates
- Tariff Changes: Immediate updates when new tariffs are approved
HEnEx - Hellenic Energy Exchange
What is HEnEx?
The Hellenic Energy Exchange (Ελληνική Ανταλλαγή Ενέργειας - ΗΕνΕξ) is Greece's organized electricity market operator. Established in 2018, HEnEx operates the day-ahead market, intraday market, and forward market for electricity trading, providing transparent price discovery and market liquidity.
Data We Use from HEnEx
Wholesale Prices
- Day-ahead market prices
- Intraday market prices
- Forward market prices
- Price volatility metrics
Market Data
- Trading volumes
- Market liquidity indicators
- Bid/ask spreads
- Market efficiency metrics
Operational Data
- System demand forecasts
- Generation capacity data
- Network constraints
- Market clearing results
How We Access HEnEx Data
- Public API: Real-time access to market data through HEnEx's public API
- Daily Reports: Comprehensive daily market reports and summaries
- Market Results: Published results from all market sessions
- Historical Data: Access to historical market data for trend analysis
Update Frequency
HEnEx data is updated as follows:
- Real-time Prices: Every 15 minutes during market hours
- Daily Reports: Published by 9:00 AM the following day
- Market Results: Available within 2 hours of market closure
- Historical Data: Updated daily with previous day's information
Direct Supplier Information
Supplier Websites & Publications
We regularly monitor all major electricity suppliers in Greece to gather the most current information about their plans, rates, and offers. This includes:
Major Suppliers
- DEI (ΔΕΗ) - Public Power Corporation
- PPC (ΔΕΔΔΗΕ) - Public Power Corporation
- Protergia
- Elpedison
- Heron
- NRG
Municipal Companies
- DEDDIE Municipal Companies
- Local electricity providers
- Regional energy cooperatives
Alternative Providers
- Green energy suppliers
- Community energy projects
- New market entrants
Data Collection Methods
- Website Monitoring: Automated monitoring of supplier websites for rate changes
- Public Announcements: Monitoring of official supplier announcements and press releases
- Customer Service: Regular communication with supplier customer service teams
- Regulatory Filings: Review of supplier filings with RAE and other authorities
Update Frequency
Supplier data is updated as follows:
- Rate Changes: Immediate updates when new rates are announced
- Plan Updates: Weekly review of all supplier offerings
- New Plans: Real-time updates when new plans are launched
- Promotional Offers: Daily monitoring of limited-time offers
Data Quality & Validation
Quality Assurance Process
We maintain rigorous quality standards through a multi-layered validation process:
1. Source Verification
All data sources are verified for authenticity and authority
2. Cross-Validation
Data is cross-referenced across multiple sources for consistency
3. Format Standardization
All data is standardized to ensure compatibility and accuracy
4. Automated Validation
Automated checks for data integrity and logical consistency
5. Manual Review
Expert review of complex or unusual data patterns
Error Detection & Handling
- Range Validation: All numerical values are checked against reasonable ranges
- Consistency Checks: Cross-field validation to ensure logical consistency
- Anomaly Detection: Automated detection of unusual data patterns
- Source Discrepancy Resolution: Systematic resolution of conflicts between sources
Data Freshness
We maintain strict standards for data freshness:
- Real-time Updates: Critical data (prices, rates) updated in real-time
- Daily Updates: Market data and supplier information updated daily
- Weekly Reviews: Comprehensive review of all data sources weekly
- Monthly Audits: Full data quality audit conducted monthly
Transparency & Accessibility
Public Access to Sources
We believe in complete transparency. All our data sources are publicly accessible:
- RAE Website: www.rae.gr
- HEnEx Website: www.henex.gr
- Supplier Websites: All supplier websites are publicly accessible
- Government Publications: All official publications are publicly available
Data Attribution
Every piece of data in our system is properly attributed to its source:
- Clear indication of data source for all information
- Timestamp of when data was last updated
- Source reliability rating and confidence level
- Direct links to source documents when available
Independent Verification
Our data can be independently verified by:
- Accessing the same public sources we use
- Reviewing our methodology documentation
- Comparing our results with official publications
- Contacting regulatory authorities directly
Questions About Our Data?
If you have questions about our data sources or would like to verify specific information, we're here to help:
We're committed to transparency and welcome questions about how we source, validate, and use our data to provide accurate electricity plan recommendations.