Denver’s first chief sustainability officer is leaving office after leading the city to multiple climate action awards.

Jerry Tinianow was appointed by Mayor Michael Hancock in 2012, who last month declared July 26 as “Jerry Tinianow Day” in Denver, according to a statement Monday from the Western Urban Sustainability Advisors.

During his tenor, Denver was ranked eighth in community energy efficiency by the American Council for an Energy Efficient Economy, certified by the U.S. Green Building Council at the Platinum Level and named in the “A List” of top-performing cities by the Carbon Disclosure Project.

The 2018 winner of its Wirth Chair Sustainability Award also helped launch Denver’s 2018 Climate Action Plan with the main goal to reduce emissions 80% below 2005 baseline levels by 2050 in order to limit warming to less than 2 degrees Celsius. 

On June 26, Tinianow asked his Twitter followers whether Denver should declare a climate emergency.

Tinianow has now launched a new company called Western Urban Sustainability Advisors which offers consulting services to local governments and business regarding green practices.

“When I left my position as Denver’s first Chief Sustainability Officer on July 31 I said that I wasn’t hanging up my spurs, just changing to a different horse,” Tinianow wrote in a Facebook post Monday. “The new horse is my company, Western Urban Sustainability Advisors, LLC. It’s open for business!”

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