Knowledge Base
Colorado Building Compliance Resources
Practical guides on Regulation 28, energy auditing, compliance pathways, and Colorado energy incentives. Written for building owners and property managers, not engineers.
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Incentives & ROI February 5, 2025
Colorado Energy Incentives for Regulation 28 Compliance
Xcel Energy, Black Hills Energy, Colorado C-PACE, and CEO grants available to Colorado building owners pursuing Regulation 28 compliance. Dollar amounts and eligibility details.
Read article How-To Guide January 22, 2025
Regulation 28 Compliance Pathways: Which One Is Right for Your Building?
Colorado Regulation 28 offers four compliance pathways. This guide compares EUI targets, GHG reductions, and real-world scenarios to help building owners choose correctly.
Read article Compliance Guide January 10, 2025
Colorado Regulation 28 Explained: What Building Owners Need to Know
A plain-English breakdown of Colorado Regulation 28 (5 CCR 1001-32): what buildings are covered, the compliance deadlines, pathway options, and what happens if you miss it.
Read articleQuick Regulation 28 Answers
When is the Regulation 28 benchmarking deadline?
Starting in 2026, the annual benchmarking report is due November 1 each year. Buildings must submit energy use data through ENERGY STAR Portfolio Manager or an equivalent tool approved by CDPHE.
Does Regulation 28 apply to all Colorado buildings?
No. Regulation 28 applies specifically to commercial, multifamily residential, and public buildings at or above 50,000 square feet. Buildings below that threshold are not currently covered by the mandate.
What is the Colorado Energy Office's role in Regulation 28?
The Colorado Energy Office (CEO) provides technical assistance, compliance resources, and coordinates with building owners and utility partners. Actual enforcement authority sits with the CDPHE Air Quality Control Commission.
Can Colorado C-PACE financing help with Regulation 28 improvements?
Yes. Colorado's Commercial Property Assessed Clean Energy (C-PACE) program allows building owners to finance energy efficiency and renewable energy improvements through a property assessment — meaning no upfront capital required. Improvements identified in your audit are often C-PACE eligible.