What We Do

At the Colorado Sierra Club, we know that the health of our environment shapes the health of our communities. Our members work tirelessly to protect the earth’s vital resources, natural beauty, wild creatures, and scenic landscapes, and our voices influence leaders and transform how industries are powered.

The Colorado Sierra Club provides a home to volunteer-driven teams building grassroots power by engaging new people, nurturing new leaders, diversifying the movement, and making meaningful progress on conservation goals. Join us in embracing bold, positive, and future-focused solutions to the climate crisis. 

Climate and Energy

At the Colorado Sierra Club, we are dedicated to tackling the complex climate and energy challenges facing our state.  Our incredible staff and volunteers work tirelessly to address the harmful impacts of fossil fuel extraction while...

Lands, Water, Wildlife

The Colorado Sierra Club Public Lands Team is a space for lands, water, and wildlife advocates across Colorado to learn about, collaborate on, and participate in conservation advocacy, educational events, outdoor service projects, and nature outings...

Legislative Lobbying

The Colorado Sierra Club is very active at the State Capitol. We support measures that address clean air and water, clean energy, and natural resource issues. We oppose efforts to roll back environmental protections.  Check out our 2025...