Interpret year-to-date indexes

Year-to-date irec corresponds to the cumulated energy index of the period January to Date compared to the same period over the long-term reference.
92% means that the expected production for the period should be 8% lower than the one expected on the same period over the last decade.
Updated quarterly and available for free, these indices provide a first insight into the evolution of wind resources across more than 300 regions worldwide.
Indexes for offshore areas are represented with a specific pictogram