The capture price is the volume-weighted average day-ahead price a technology actually earns — hours with more generation weigh more. The capture rate divides that by the unweighted baseload price: below 100% means cannibalisation, the asset producing most when prices are lowest. The Italy Calabria bidding zone (IT_CALA, EIC 10Y1001C--00096J) is one of 7 independent zones in Italy. This page tracks monthly solar and wind onshore capture prices and capture rates for the Italy Calabria bidding zone (IT_CALA), computed from ENTSO-E hourly day-ahead prices and per-technology generation, from 2021.
Solar and wind onshore in the IT_CALA bidding zone, most recent month with data. Months are bucketed in market time (Europe/Berlin).
See the Italy hub for all sub-zones.
The capture price weights every hour's day-ahead clearing price by that hour's generation of the technology: capture = Σ(price × generation) / Σ(generation). The baseload price is the plain monthly mean of all hourly prices — what a flat, always-on asset would earn. The capture rate is capture ÷ baseload; the industry also calls it quality factor, value factor, or Marktwertfaktor. Negative prices are included as-is, and hours with zero generation contribute zero weight.
Falling solar capture rates are cannibalisation in action: every new panel produces in the same midday hours, pushing exactly those clearing prices down.
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