Onshore wind power projects have high additionality risks. The technology is mature, and many countries support wind power with feed-in tariffs, renewable energy auctions, tax credits, or other policy instruments. Quantification methodologies for calculating and monitoring emission reductions from onshore wind power projects have shortcomings. Their application likely leads to overstimating emission reductions by 10 to 30 percent. The project type is a backbone for the global energy transition and indispensable for reaching net zero emissions. It also likely reinforces many Sustainable Development Goals. The project type does not have a material non-permanence risk.