Bat-Killing Wind Turbines Outfitted With Systems to Stop Carnage

(Bloomberg) -- The wind farms that have proliferated across Texas in the past decade have done plenty to cut power-sector emissions. But with blades spinning at up to 100 miles-per-hour, they’ve been murderous for bats.

Now Duke Energy Corp. is deploying technology to dissuade the creatures from flying headlong into their deaths. It uses ultrasound to block sonar bats use to navigate at night, prompting them to avoid areas around turbines.

The Charlotte, North Carolina-based utility owner is using the “Bat Deterrent System” at installations in the Rio Grande Valley. It’s first time a company has commercially deployed the system, developed by ESCO Technologies Inc.’s NRG Systems, according to a statement Wednesday. A two-year study found it can reduce bat fatalities by 50%, Duke said.

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