irec indexes provide independent, data-driven insights to accurately assess wind resource variability and its impact on energy production. Free year-to-date indexes, updated quarterly on this website, offer an initial level of analysis, while monthly indexes delivered to our clients provide a more detailed and actionable understanding, helping wind energy professionals to:

• Quantify production shortfall due to wind resource
• Understand production gaps between actual output and budget targets
• Check wind assets’ actual production capacity
• Follow portfolio value and performance over time
• Improve reporting and communication with stakeholders

Built on over 20 years of expertise, irec index is widely used to monitor and analyze renewable energy assets worldwide.

These indicators, which rely on acknowledged reanalysis data ERA5, are available for free on this platform on a year-to-date basis and updated every quarter for over 300 predefined areas covering more than the 2/3 of the wind farms in operation around the world.

Enhance your asset portfolio monitoring with detailed monthly index updates (see products overview). These easy-to-use monthly indicators will enable you to get a quick overview of the value of a portfolio and follow it over time.