At a glance
The Citadel is a 144,493-square-foot office building at 3200 E Cherry Creek South Drive in Denver, Colorado, built in 1985. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 46.9 kBtu/ft² and 1,050 tCO₂e of greenhouse-gas emissions. That score is higher than 68% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 84 (band B) |
| Site EUI | 46.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,050 tCO₂e |
| GHG intensity | — |
| Electricity | 1,984,920 kWh |
| Natural gas | 0 therms |
| Gross floor area | 144,493 sq ft |
| Source record | denver:3464:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 84 | ±0 | 46.9 kBtu/ft² | 1,050 tCO₂e |
| 2022 | 84 | +2 | 47.6 kBtu/ft² | 1,054 tCO₂e |
| 2021 | 82 | 47.2 kBtu/ft² | 1,133 tCO₂e |
Compliance context
Energize Denver Building Performance Policy
Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 3200 E Cherry Creek South Drive
- City
- Denver
- State
- Colorado
- ZIP
- 80209
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Denver · biggest emitters
How does The Citadel compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. The Citadel's ENERGY STAR score of 84 compares with an average of 71 across the 339 that report a score; it scores higher than 68% of them and lower than 29%. Its site EUI of 46.9 kBtu/ft² is about 30% below the average of 67.1 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 144,493 sq ft, it is roughly in line with the average floor area of 157,927 sq ft for those buildings. It was built in 1985, 5 years later than the group's average year built (1980). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has The Citadel's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for The Citadel, covering report years 2021–2023. Its ENERGY STAR score went from 82 in 2021 to 84 in 2023 (+2 points); its best year on file was 2022, at 84. Site EUI moved from 47.2 kBtu/ft² (2021) to 46.9 kBtu/ft² (2023), a 1% decrease. Reported emissions went from 1,133 tCO₂e to 1,050 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 84 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In Denver, 54% of scored buildings are at 75 or above.
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. The Citadel's 46.9 kBtu/ft² across 144,493 sq ft works out to about 6.8 billion Btu (1,986 MWh-equivalent) in 2023. The disclosure also reports 1,984,920 kWh of electricity and 0 therms of natural gas for the year.
Which law requires The Citadel to report its energy use?
The Citadel reports under the Energize Denver Building Performance Policy, the legal basis of Denver's Energize Denver Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2023 disclosure (source record denver:3464:2023). Energize Denver sets energy-use (EUI) targets for buildings of 25,000+ sq ft — for most buildings an interim target in 2028 and a final target in 2032 — with civil penalties of roughly $0.15–0.35 per kBtu over target for non-compliance.
More office buildings in Denver
- 4350 South Monaco· 144,048 sq ft · score 71 (B)
- Tamarac Plaza 2· 144,026 sq ft · score 76 (B)
- Pinnacol - Lowry - 7501 Lowry· 142,694 sq ft · score 83 (B)
- 7901 East Lowry Blvd Denver Co (Quad At Lowry Iv)· 142,194 sq ft · score 73 (B)
- Ccn Gateway, Llc C/O Corum Real Estate Group· 140,832 sq ft · score 86 (A)
- Flight· 140,000 sq ft · score 73 (B)
- Office buildings in Denver· 427 benchmarked
- All Denver benchmarked buildings· Energize Denver Building Performance Policy
- Most efficient large buildings in Denver
- Least efficient large buildings in Denver
- Biggest emitters in Denver
Frequently asked questions
What is The Citadel's energy grade?
The Citadel scores 84 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 Denver disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Citadel use?
Its 2023 site energy-use intensity was 46.9 kBtu/ft² across 144,493 sq ft, including 1,984,920 kWh of electricity and 0 therms of natural gas.
What are The Citadel's carbon emissions?
The Citadel reported 1,050 tCO₂e of greenhouse-gas emissions for 2023.
Where is The Citadel?
The Citadel is at 3200 E Cherry Creek South Drive, in Denver, Colorado 80209.
How big is The Citadel and when was it built?
The Citadel has 144,493 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1985 as its year built. It is classed as office.
Is The Citadel covered by the Energize Denver Building Performance Policy?
Yes — it appears in the 2023 Energize Denver Benchmarking disclosure, which lists the buildings reporting under the Energize Denver Building Performance Policy.
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About this data
Source: Energize Denver Benchmarking (Energize Denver Building Performance Policy), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “The Citadel, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/the-citadel-91dd74ab (data as of July 9, 2026).