Methodology
How Electricity Price Rankings are built
Rankings compare countries using published wholesale reference data normalized to EUR/MWh. They are market references, not household bills.
Included data
The ranking includes only zones marked as current and labelled as wholesale reference. Display follows the source attribution and licensing metadata available through the GridPassport public energy API.
Excluded data
Supplier tariffs, consumer estimates, stale feeds, empty feeds and historical benchmarks are excluded from the country ranking. UK supplier tariff regions are therefore not mixed with Great Britain wholesale data.
Country aggregation
Countries with several price areas are aggregated by timestamp using the average of available areas. Duplicate source feeds for the same market area are avoided where a primary market feed is present.
Metrics
Average, lowest, highest, spread and volatility are calculated from published price points. The cheapest three-hour window is the lowest average contiguous three-hour block available for that day.
Actuals and forecasts
Ranking pages are built from published actuals. If a source ever returns overlapping actual and forecast points, the published actual point wins.
Coverage
Closed-day rankings use an 80% coverage threshold. Today can show a published-so-far view because some markets publish the operating day before all local intervals have passed.
License and attribution
Electricity Price Rankings are derived from public source feeds and normalized by GridPassport for comparison. Source-specific data licences, terms and attribution requirements continue to apply to the underlying market data; where available, ranking pages expose source and terms links alongside the visible data.