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Passive Ultrasonic Deterrents to Reduce Bat Mortality in Wind Farms

Abstract

Idea/Technology:
– Blade-mounted ultrasonic deterrent driven by blade-relative flow

Technology Impact:
– Mitigate bat mortality at wind farms with little-to-no reduction in energy capture
– Cost savings by replacing/supplementing operational mitigation with the proposed deterrent

Current status:
– Deterrent tested to generate ultrasound spectrum in labs
– Passive operation looks promising … design optimization pending
– Impact on bats … not yet investigated