The CORE Knowledge Base

Page in Green Builder Magazine showing Aspen as the winner of their Sustainable Communities of the Year Award!

City of Aspen Wins Sustainable Communities of the Year Award

Congratulations to the City of Aspen for winning Green Builder Magazine’s Sustainable Communities of the Year Award!


City of Aspen at dusk with buildings all lit up and snowy mountainside in the background.

City of Aspen Recognized by the EPA

The EPA recognized Aspen this week in a national outreach campaign for the work CORE and the City of Aspen are doing with Building IQ, a program to benchmark large buildings in Aspen.

More Money for Multifamily Properties

Get funding for 50% of project costs, up to $50,000 for multifamily properties to make energy efficiency improvements to the whole building or common spaces.

How to DIY: Energy Efficiency Upgrades

CORE provides rebates on energy efficiency upgrades you can do yourself, 25% of project costs up to $500!

Don’t get spooked by your energy bills

With Halloween just around the corner, there is a lot to be afraid of – witches, ghosts, and ghouls, to name a few – but one thing you shouldn’t be scared of is your energy bills. 

There to Help: CORE’s Income-qualified Program

CORE offers free energy assessments and double rebates for income qualified residents.

Cooking Without Gas

Watch Chef Martin’s cooking demonstration on an induction stove, and learn more about why you should switch from gas to electric.

The 5 W’s of Cooling with a Heat Pump

Did you know that heat pumps are not only for heating, but for cooling too? Find out why this 2 in 1 system is the most efficient on the market.

Bigger Rebates for Basalt Residents

Up to 3X the rebates for Basalt residents! The Town of Basalt is matching CORE’s incentives for energy upgrades. You can cover up to 75% of your project costs when combined with rebates from Holy Cross Energy.

25 Reasons to Get an Energy Assessment

Interested in sustainability but not convinced? Here are 25 reasons to start your path to zero with an energy assessment.

CORE is a 501(c)(3) nonprofit dedicated to leading the Roaring Fork Valley to a carbon-free, net zero energy future.