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Ice Index · Monthly icing reports

The icing
season,
quantified.

Every month we publish a normalized icing index for the region around Quebec City. Operators use it to benchmark the performance of their icing solutions, calibrate AEP forecasts, and justify investment in icing mitigation.

Request a high-resolution index for your wind farms
Winter 2025–26 · YTD
0.75
-25% vs 30-yr avg
April 2026 icing map
April 2026 · 600 m AGL · Québec wind regions
Methodology

How the index is built.

The Ice Index is a single comparable number, built on years of meteorological measurements, on-field validation, and statistical normalization.

01
Actual field measurements
Hourly measurements of the cloud characteristics and temperature at nearby meteorological stations. Based on an industry-accepted methodology.
02
On-field validation
Validated in a scientific study against IC-1 sensor readings and turbine performance from 6 wind farms across Eastern Canada.
03
Normalization
Each month's value is expressed relative to the 30-year monthly average, giving a number to compare months and years together and quantify the inter-annual variability of icing conditions.
Full archive

Every month, since 2023.

Click any month to open its full report. Archive goes back fourteen winters, the deepest publicly available icing dataset for Eastern Canada.

For other regions

Commission an
Ice Index for
your region.

We publish the Québec City Ice Index monthly. For other regions (New England, the Maritimes, Northern Europe, the Alps) we build and deliver a custom monthly index on commission, with much higher resolution.

Typical engagements are annual subscriptions for operators with assets in a specific area; we calibrate the model with your sensor data if you have it.

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Regions we cover

Common questions.

Contact

Plan winter, not just survive it.

Subscribe to the Québec Ice Index, or commission one for your own region. We respond within 24 hours.

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