Verify data sources

Be sure to refer to this wiki page whenever a contributor suggests a data source so that we can make sure we are using the best and most reliable data possible.

Why data source credibility is important

In order for Electricity Maps to be as accurate and correct as possible, we need to verify that the data we use originates from the most credible sources available. A credible source is a source we can guarantee is trustworthy and of high-quality.

Criteria to consider when evaluating source quality

• Authority: Is the data provider verifiably an authority internationally/regionally, and recognised as a source of truth (e.g. a government energy ministry)?
• Accuracy: Is the data provider reporting factual data or is it a more subjective analysis (e.g. individual posting scraped data on a personal project website)?
• Confirmability: If the data provider is not the most authoritative source in a region, can it be verified against more credible sources?
• Primary source: Is the data provider close to the energy data being collected (e.g. a utility company reporting on energy generation that directly owns and runs the power plants)?
• Regulation: Is the data provider under any legal requirements regarding the provision and quality of data provided?
• Rigour: Does the data provider present clear explanations about how the data is collected and any methodologies they use to process the data?

Types of credible organisations

• Government sources (e.g. energy ministry)
• Government-affiliated sources (e.g. official statistical bureau)
• Transmission/Distributor System Operators
• Utility companies (directly generating or managing power)

Real-world examples of credible sources

• USA: EIA
• Europe: ENTSO-E
• India: POWER SYSTEM OPERATION CORPORATION LIMITED
• Netherlands: Statistics Netherlands
• Japan: TEPCO - Tokyo Electric Power Company Holdings