How to interpret Cumul IREC


  • Actual cumulated energy index of the period lasting from January to Date compared to the same period over the long-term reference
  • 95% means that the expected production for the period should be 5% lower than the one expected on the same period over the last decade.
  • Please note that Cumul IREC corresponds to average regional energy indexes. The range indicates the value range within which indexes can vary due to the diversity of turbines types and diversity of exposure levels that can be encountered.

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Jan to Oct 2023

LT reference Jan to Oct 2011-2020

Or use the map for selection