Wind energy development, while crucial for climate goals, causes significant mortality of bats and birds — mitigation measures can reduce this substantially.
Wind turbine mortality of bats and birds creates a genuine tension between renewable energy development and wildlife welfare. Individual bats and birds killed by turbine strikes experience acute mortality — the welfare harm is severe but instantaneous. The scale of mortality, however, creates population-level welfare concerns for affected species, particularly long-lived raptors and migratory bat species with low reproductive rates. Mitigation technology has advanced significantly: curtailment during high bat activity periods, acoustic deterrents, and camera-based detection systems that feather blades when raptors are detected can dramatically reduce mortality while maintaining energy generation. The welfare and conservation imperative is to deploy these mitigations as standard practice rather than voluntary measures.