Workers install 16 WindStax mini wind turbines on the Rachel Carson Bridge. The turbines will power a micro grid for a digital art light display on Light Up Night.

Workers install 16 WindStax mini wind turbines on the Rachel Carson Bridge. The turbines will power a micro grid for a digital art light display on Light Up Night.

Jasmine Goldband / The Incline

Why there are wind turbines on the Rachel Carson Bridge

Updated Thursday, 11 a.m.

If you’ve walked or driven over the Rachel Carson Bridge today, you may have wondered: what are those spinning things?

They’re mini wind turbines that crews are installing as part of Light Up Night, the city’s annual winter celebration.

The project, called “Energy Flow,” was created by artist Andrea Polli and Ron Gdovic of WindStax, a local wind turbine and energy company. Wind from 16 turbines will generate electricity for Pollis’ LED light installation, according to Riverlife.

Light Up Night is scheduled to take place on Nov. 18 and is also the reason there are already Christmas wreaths Downtown. “Energy Flow” will debut at dusk that day.

This isn’t Pollis’ first outdoor installation in Pittsburgh, the Post-Gazette noted earlier this year. She was also behind “Particle Falls,” a light projection that visualized air quality data in realtime.

Rachel Carson Bridge Visualization from Andrea Polli on Vimeo.

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