Lily, ACE Headshot

Lily Trienens

Head of Policy and Communications

Lily joined ACE in 2017 and serves as Head of Policy and Communications. In this role, she identifies strategic political and policy opportunities where there is opportunity for influence and guides ACE’s communications to build power in the public sphere.

Lily was previously ACE’s Deputy Head of Philanthropy where she supported the organization’s budget growth trajectory with a transformative 5x expansion since 2019 to resource the organization’s impact to educate, inspire and support young people to fight for their future. 

Lily began her journey mobilizing peers on campus to vote in the 2004 presidential and 2005 municipal elections, then working for then-Senator Obama during and post-college. She had the life-changing opportunity to serve in the Obama White House and the U.S. Agency for International Development, including analyzing political will for renewable energy policy reform as a founding staff member of the Power Africa initiative. She earned her B.A. from Northwestern University.

Lily’s commitment to climate solutions started early in life growing up off-grid in a house powered by solar and wind energy the Adirondack Mountains of upstate New York. She has since been involved in a number of successful efforts to stop fracking, pipelines, and open pit mining.

Lily enjoys introducing her daughter to the rivers, mountains and prairies of the Ute and Arapaho land in so-called Lyons, Colorado.