Reducing Energy Consumption with Cool Rooftops
TE C LI M A IT F BENE
New York, USA: The NYC °CoolRoofs initiative encourages building owners to apply a reflective white coating to their rooftops to reduce energy use, cooling costs, and carbon emissions.
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SOCIAL °CoolRoofs has partnered with job training programs in order to staff its operations and activate jobseekers. It has already trained 162 individuals.
THE TRIPLE BOTTOM LINE
ENVIRONMENTAL Increasing the area of reflective surfaces across the city helps offset the urban heat island effect and reduces energy consumption related to air conditioning.
Solution by: New York City*
The °CoolRoofs initiative encourages building owners and volunteer groups to apply white coatings to the city’s black rooftops. The coatings have a high solar reflectivity and infrared emissivity that decreases summertime rooftop surface temperatures. As a result, building owners save money and energy associated with air-conditioning and New York City overall emits less CO2. By utilizing the power of 5,800 volunteers and 150 workforce trainees, °CoolRoofs has coated more than 550,000 m2 of rooftops in New York City, providing energy savings in low-income communities as well as teaching volunteers about sustainability. WHY A SUSTAINIA100 SOLUTION? Like many other major cities, New York struggles with the urban heat island effect, which causes summer air temperatures to be on average 4 oC warmer than surrounding suburban and rural
ECONOMIC According to city officials, a cool roof can help reduce a building’s air-conditioning costs by 10% to 30% on hot days.
areas. The warmer air temperatures impact air quality, public health, and the demand for energy. The NYC °CoolRoofs project addresses these sustainability challenges by reportedly reducing internal building temperatures by up to 30% compared to regular black asphalt roofs, helping the
© NYC Cool Roofs, Federico Rodriguez
city achieve its wider sustainability ambitions.
“The NYC °CoolRoofs program has now coated over 550,000m2 of rooftops across the city and plays a key role in our efforts to reduce energy usage and adapt New York City for a changing global climate.” DANIEL ZARRILLI, DIRECTOR, NEW YORK CITY MAYOR’S OFFICE OF RECOVERY AND RESILIENCY
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*NYC Service, NYC Mayor’s Office of Recovery and Resiliency, NYC Department of Buildings, NYC Department of Small Business Services
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Published on May 26, 2015