We focus climate action work in sectors with the largest greenhouse gas emissions contributions in Aspen. Click on the sectors below to learn more. 

Energy Supply

Buildings

Transportation

Waste

Aspen has pursued greenhouse gas reduction targets since 2007, since then, we’ve updated those targets to reflect what our fair share of emissions reduction should be. Science-based targets (SBTs) are the outcome of our commitment to Race to Zero which is a pledge to achieve net zero emissions by 2050 at the latest. 

Aspen’s Science Based Targets: 

• 63% reduction of 2017 emissions by 2030, and 
• 100% reduction of emissions (net zero) by 2050

 Waste specific Science Based Targets:

• Reduce organics in the landfill by 25% by 2025 and 100% by 2050  
• 70% total diversion by 2050

The Aspen Sustainability Action Plan 2025 (PDF)  is our roadmap to our achieving our community’s climate goals. We will measure our success by seeing year-over-year reductions in our emissions inventories and by accomplishing action items, which will be reported in annual sustainability reports. 

• We know the “what” – we need the community’s guidance on the “how.” While the key areas for high-impact climate action are clear, we need the community's input on how we build programs, offer support, provide resources, and change policies.  
• Regional collaboration is key. Greenhouse gas emissions know no boundaries. The Roaring Fork Valley has both unique challenges and opportunities we’ll need to tackle as a region to be successful.  
• We need to work fast and smart. We are facing a climate crisis, and we need to work quickly to mitigate the worst effects of climate change. Simultaneously, we need to ensure that our progress is driven thoughtfully, intelligently and leaves no one behind.  
• Incorporate adaptation and resilience. As the City adjusts to new climate realities facing the Roaring Fork Valley, we look to solutions that will strengthen our local and regional environment and prepare us to bounce forward when faced with climate change impacts.