How Climate Change Could Impact the Wind Industry: New Yield Projections for the World's Largest Projects.
- 14 hours ago
- 3 min read
Wind energy is one of the cornerstones of the global energy transition and the fight against climate change. Yet the industry still largely overlook a crucial question: how will climate change itself affect future wind energy production?
Most wind farms are designed, financed and valued using historical weather records. There is an implicite assumption here: future wind conditions will resemble those observed in the past. But as climate change accelerate, this assumption is becoming increasingly difficult to justify.
To better understand the potential risks, Callendar conducted a global assessment of climate change impacts on wind energy production. Using CMIP6 climate projections, multivariate bias correction and turbine level production modelling, including actual power curve and hub height, we evaluated future energy yield at fifty of the world's largest wind farms, representing every continent and a broad range of climatic conditions.
A Global Tendency Toward Lower Production
Wind yield projections under climate change reveal a consistent trend across the world largest wind farms: wind energy production is likely du decline in the next decades.
By 2050, median projected changes range from approximately -2% under SSP2-4.5 to more than -4% under SSP5-8.5 compared with the year 2000 baseline.
Even though we used a new and more accurate methodology to project future wind yields, these numbers are consistent with previous studies.
At first glance, a 2 to 4 percent decrease may appear modest. However, those figures hide substantial differences between locations. Some wind farms remain relatively stable, while others experience much larger reductions. By 2050, more than one in ten sites included in the study exhibits production declines exceeding 8%. Under the highest emissions scenario, the most affected wind farm experiences a projected reduction of more than 20%.
The key message is therefore not simply that climate change affects wind resources, but that its impacts are highly uneven across locations.
The Strongest Signals Are Negative
To evaluate the robustness of the results, we combined statistical significance testing with intermodel agreement diagnostics following the methodology used by the IPCC.
The analysis shows that robust downward trends become increasingly common over time. By 2050, 12 of the 50 wind farms exhibit statistically robust production declines under SSP2-4.5, rising to 17 under SSP5-8.5.
Only one site displays a robust positive signal.
While uncertainty remains significant for many locations, the most statistically confident signals identified across the global sample are overwhelmingly associated with declining wind energy production.
Not a Threat to Wind Energy, But a Risk for Some Projects
The good news is that even under pessimistic scenarios, projected production losses remain small compared with the technological progress achieved by the industry over the last decades. Larger rotors, higher hub heights and improved turbine designs have consistently increased energy capture and are likely to continue doing so.
In other words, climate change does not appear to threaten the long term viability of wind energy as a whole. However, the situation looks different at the project level.
A 3% reduction in long term energy production roughly translates into a similar reduction in electricity sales. For projects developed under highly competitive market conditions or operating with limited margins, such changes can become financially material.
Why Climate Projections Matter
This challenges one of the core assumptions still embedded in many resource assessments and financial models: the assumption that the future climate will resemble the past.
The question is no longer whether climate change will influence future wind resources, but where, by how much, and with what level of confidence.
Just as wind resource assessment has become a standard component of project development and financing, climate adjusted resource assessment is likely to become an increasingly important component of wind project planning and investment decisions.
Download the Full Study
The complete report includes:
A review of recent scientific literature on climate change impacts on wind energy.
A presentation of Callendar's ClimateVision methodology.
Results for the largest wind farms on every continent.
Regional analyses and robustness assessments.
Discussion of implications for developers, investors and turbine manufacturers.
Download the full study to explore the results in detail:
