Your Commitment to Climate Action Starts with CORE

CORE makes climate action accessible by providing funding, resources, and expert guidance to Pitkin, Eagle, and Garfeld County home and building owners.

Get expert advice on how to find energy & money savings for property improvement projects.

Apply for funding to alleviate the financial burden that comes with home & building improvement projects.

Whether you donate or start a project, your actions leave a legacy for generations to come.

Empowering You to Make a Difference Where You Live, Work & Play

For more than 30 years, CORE has helped Pitkin, Eagle, and Garfield County communities take action on climate change.


We bridge the gap between aspiration and action, providing energy-efficient property improvement solutions for all. This includes connecting homeowners and building owners with specialized contractors and funding options, and offering comprehensive building and retrofit guidance.

About CORE
Aspen CORE workers sitting on top of a mountain

Climate Change Threatens

Our Environment & Our Future

Climate change is driven by greenhouse gases that cause severe weather, prolonged droughts, glacial melt, and rising sea levels.


In Pitkin County, buildings alone contribute over 56% of greenhouse gas emissions.


That's why at CORE, our focus is on the built environment. Reducing carbon emissions from this sector is crucial for impactful climate action, and we all must work together if we're going to make a positive impact on the future of our community.

About Our Impact

Our Approach - Our Impact

By Taking Bold Action Today, We Can Ensure a Better Tomorrow

At CORE, our impact extends beyond just the environment. Our work makes the whole community healthier and more resilient. We improve air and water quality, leading to better public health. We help lower energy costs, benefitting everyone, especially those in affordable housing. Additionally, our focus on sustainability reduces climate risks and lessens the burden on emergency responders. Ultimately, CORE creates a ripple effect of positive change throughout our community.

Featured News & Resources

Aspen CORE employees at a sustainability event.

Partner with Experts to Maximize Your Building’s Potential

Read the New Blog
Jonathan Jones with Atlantic Aviation

Commit to the Challenge & Multiply Your Impact

Donate Today
Aspen CORE employee taking home measurements.

Capturing Carbon: The Coal Basin Methane Project

June 12, 2025

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Energy Spotlight

Will & Annette Vannice

With advice and financial support from CORE, the Vannices took the chance to convert a dilapidated 1960s mountain home near Redstone into a sustainable oasis powered by renewable electricity and their property's 125-degree natural hot spring.

Celebrating 30 Years of Impact

Removed over 34,000 metric tons of carbon through 6,000 energy efficiency projects.

Connected community members and businesses with over $10 million in grants and rebates.

Advanced mitigation efforts to eliminate massive amounts of methane leaching from an abandoned coal mine.