Simple. Sustainable. Solutions. Your Key to Sustainability
AEI makes decarbonization accessible through applied energy intelligence. We cut the costs and simplify the process of meeting Colorado's Building Performance Standards. Our loyalty is to our clients, the climate and our local small business owners and contractors, not to some faraway group of investors.
Decarbonization, priced for the building owner.
At AEI, we believe in simple, scalable and sustainable solutions. Our team brings deep industry knowledge, regulatory insight and hands-on field experience, and delivers turn-key results you can trust, from the first benchmark to the last rebate check.
We are privately owned and building-centric: our only commitments are to our clients and the climate. Rebate dollars are meant to fund real carbon savings, so we keep our fees inside them and send the rest of the budget to the projects themselves.
Fifteen years of field work behind every recommendation
- 689electrification feasibility reports tracked in Denver's building electrification program, which Miles designed and launched
- 211Ask E research answers for 48 utilities and efficiency organizations across North America (E Source)
- 16.8 millionkWh of annual electric savings identified in the reports reviewed
- 1,072,000therms of annual gas and steam savings identified
- 17,803metric tons of CO2 avoided per year if implemented (EPA factors)
- 158buildings assessed or improved in five states, across higher education, K-12, recreation, municipal, public safety, healthcare, industrial, hospitality and multifamily
Why owners choose AEI
Fees inside the rebate
We never charge more for an audit than the estimated rebate. Incentives meant for carbon savings shouldn't be absorbed by consultant fees.
No strings attached
We're not a general contractor, an ESCO or an equipment seller, so there is no construction commitment. Every recommendation is one we'd make for our own building.
Local partners
When you're ready to build, we connect you with HVAC service companies, MEP design firms and financing partners, favoring locally owned small businesses.
Faster, lower-cost analysis
AI-assisted analysis works through utility bills, interval data and building records in days instead of weeks. You get the same rigor at a lower cost.
Facing a building performance deadline?
Energize Denver: buildings of 25,000 sq ft and up benchmark every year by June 1. Under the rules updated in August 2026, most face an interim energy target in 2028 and a final target in 2032. Buildings of 5,000 to 24,999 sq ft have their own deadlines, starting December 31, 2026 for 20,000 to 24,999 sq ft.
Building Performance Colorado: buildings of 50,000 sq ft and up statewide report by November 1 each year and must meet a 2030 performance target.
Energize Denver audit rebates: get pre-approved by December 15, 2026
Denver pays $5,000 toward an ASHRAE Level 2 audit for buildings of 25,000 to 50,000 sq ft, and $2,500 plus $0.05 per sq ft, up to $30,000, for larger buildings. Audits with a site visit on or after November 17, 2022 can qualify retroactively. Most buildings face their 2028 interim target, so projects need to be finished during 2027 to count for a full year.
Our pledge: we never charge more for your audit than the estimated rebate. We file the rebate application with you, and because we are not a general contractor, there is no construction commitment attached.
Your path to compliance
Talk to us
A free 30-minute call about your building, your deadlines and your goals.
Rebate pre-approval and data
We file the audit rebate application with you, then gather utility bills, Portfolio Manager data, drawings and a site visit.
A clear, ranked plan
An ASHRAE Level 2 audit with measures ranked by cost, savings, carbon and available rebates, in plain language.
Build with the right partners
We help you choose an HVAC service company, MEP designer and financing, then keep you compliant year after year.
Featured partner project
172 income-qualified Denver households had heat but no cooling. Now every apartment has a high-efficiency heat pump, and rebates paid 95% of the bill.
The Towers at Speer is a 1982 Denver apartment building that serves lower-income families. Its hot water radiant system could only heat, so residents went without cooling through Denver summers. Miles led the ASHRAE Level 2 audit and engineered a conversion of the building's heating loop to serve 175 new water-source heat pumps, giving every apartment quiet, efficient heating and cooling.
As a Denver Equity Priority Building, the project stacked Denver's C.A.S.R. rebate with Xcel Energy's heat pump discount: $1,435,000 against a $1.51 million cost. That left the owner $78,470, which the estimated Section 179D deduction more than covers. The building then earned an ENERGY STAR score of 95 and already beat its Energize Denver target, six years early.
How we work
Compliance is where many clients start, not where we stop. The same method serves three kinds of clients.
Building owners
Benchmarking, ASHRAE audits, retro-commissioning, energy modeling, electrification planning and rebates for commercial, multifamily, school and campus buildings.
Building owner servicesIndustrial facilities
Lean and Six Sigma process evaluation, industrial energy assessments and energy tax incentive studies that pay for themselves.
Industrial servicesMunicipalities and utilities
Decarbonization roadmaps, building performance policy, utility program design and grid and distributed energy consulting.
Public sector and utility services- AssessData, site visit and analysis
- PlanMeasures ranked by cost, carbon and payback
- FundRebates, incentives, tax deductions and financing
- BuildYour choice of vetted, locally owned partners
- VerifyBenchmarking and savings you can see
We are not a general contractor and do not provide stamped MEP design. Staying independent is what lets us recommend only what's right for your building.