Methodology

Explore the European day-ahead electricity price map to compare bidding zones and delivery periods.

For each bidding zone and delivery date, Eurospotting selects a valid canonical source series at its published PT15M, PT30M or PT60M resolution. It checks interval order, overlap, gaps, array alignment and expected delivery-day coverage. Missing intervals are never interpolated.

Delivery dates follow each zone’s delivery timezone. Interval boundaries are stored in UTC and evaluated against the local delivery day, so daylight-saving transitions can contain 23 or 25 hourly equivalents without being treated as errors.

Public map colors, charts, summaries and rankings use canonical EUR/MWh. EUR/MWh source data is unchanged; supported non-euro source prices are converted using documented rates selected by delivery date. If a trustworthy conversion is unavailable, the comparable value remains unavailable.

Low and High are the minimum and maximum published interval prices. Average is weighted by each interval’s duration. Median is the duration-weighted median. Daily spread is High minus Low.

Daily volatility is ramp intensity: the sum of absolute price changes between contiguous intervals, normalized per represented hour. A gap never creates a synthetic price jump.

Weekly and Monthly Low and High retain the extrema of their included canonical intervals. Average and Median are computed using represented interval duration. Aggregates retain status and coverage context rather than treating an incomplete child period as complete.

Highest daily spread is the largest actual Daily High minus Low occurrence inside the displayed scope. Most volatile is the highest actual Daily volatility occurrence inside that scope; Weekly, Monthly and Yearly insight cards rank daily observations instead of calculating one concatenated parent-period volatility.

A provisional current day uses the complete canonical set of published delivery intervals available for that day, including published intervals later than the current wall-clock time. Current-week, month and year insights combine finalized observations with valid published provisional days.

Partial observations stay marked partial and missing observations stay missing. A valid child observation remains eligible for an extrema or winner ranking even when another child in the parent period is incomplete.

Lowest and Highest identify the actual winning price occurrence. Highest daily spread and Most volatile identify the actual winning delivery day. Ties use a deterministic displayed winner and retain the tied count; a navigable card opens that exact zone and delivery date.

Map shapes represent bidding zones for analysis. They are not legal borders, grid-connection boundaries or official geographic records.

For methodology or data-quality questions, contact contact@eurospotting.com.