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Energy Assessments

We are suspending our Energy Assessment program through the end of March. This is to protect both you and our energy analysts, since we cannot guarantee six-foot distancing nor the health/safety environment within each building. On March 31, we will re-evaluate this policy and make a decision for the program going forward.

Energy Advising

Remote energy advising, by phone and email, continues. You may schedule an appointment with our energy advisors and we will walk you through your energy-saving options and co-create a personalized plan that maximizes the impact for your space. This expert advice is free in the Roaring Fork Valley! Sign up here.


CORE’s rebate program will also continue during this period, with some changes:

  • CORE will temporarily lift the assessment requirement to receive rebates for certain projects. These include water heating, space heating and solar projects. You will still be required to have an energy advising session to receive a rebate.  Some exceptions may apply for commercial projects.
  • Rebates for air-sealing and insulation projects will be on hold until our energy assessment program resumes. This is because before-and-after assessments determine the energy impact of the work.
  • For projects that do not require an energy assessment, there is no change in our rebate policy. These projects include: LED lighting and controls, such as thermostats and heat tape.

It’s easy! When you fill out this form, we will respond with your next steps right away.

Our service territory is the Roaring Fork Valley, from Glenwood Springs to Aspen. It also includes Marble and Redstone.

The W9 form (aka the “Request for Taxpayer Identification Number and Certification”) is an IRS form, but not one you send to the IRS. That might sound confusing, but it’s actually pretty straightforward. You typically get one from an organization like CORE that will be paying you. When you submit a W9, it keeps you in good graces with Uncle Sam and helps CORE process rebates quickly and accurately. Without it, we can’t pay you.

In a nutshell, we help you save energy and cut carbon emissions. One of the ways we do this is by offering the community energy assessments, advising and funding for qualified projects. If you have questions about the organization, check us out.

It will take less than three weeks.

Yes! You just need to make arrangements directly with the analyst.

Your application must be submitted within six months of completing a project or final invoicing. Like any organization, we have budgets and accounting systems that we have to stay true to, so we can’t keep our books open indefinitely. Submitting your paperwork promptly helps us both.

Windows don’t pass the “cost-effectiveness test” for reducing carbon emissions and we want you to get the most bang for your buck!

CORE provides rebates for these residential and commercial measures, and if your idea contributes to a project with a Home Energy Rating System (HERS) index of <50, you might qualify for a net-zero grant. When in doubt, ask us questions!

We’re lucky to have lots of local talent in the Roaring Fork Valley. You will find a list of trusted CORE contractors here.

You need to have an energy assessments every five years or after a major remodel, whichever comes first.

If your home is not connected to the grid, or is in Glenwood Springs and not on the Glenwood Springs Electric grid, your project does not qualify for CORE rebates.

The path to zero is all about maximizing efficiency. Sealing air leaks before improving insulation ensures you get the most out of your energy upgrades.

Once you fill out this form, you are on the path to zero and may submit multiple invoices with one W9.

AFUE (annual fuel utilization efficiency) is the measurement of how efficiently a gas furnace or boiler will operate over an entire heating season. AFUE is measured as a percentage; the higher the better!

COP (coefficient of performance) is the measurement of how efficiently a heating or cooling will operate at a single outdoor temperature condition. A COP in the high single digits is fantastic.

HSPF (heating seasonal performance factor) is the measurement of how efficiently heat pumps will operate in their heating mode over an entire heating season. A HSPF between 7 – 8 is typical for a good rating for an energy-efficient heat pump.

Have more questions? We’ve got you covered.

You visit will be scheduled within one to two weeks.

When you submit your utility bill, it verifies your electric service territory and helps CORE measure the energy impact of your project. This way we can customize the advice we give you.