At a glance
Jackson is a 68,051-square-foot office building at 300 South Jackson St. in Denver, Colorado, built in 1981. In its 2023 Denver benchmarking disclosure it reported an ENERGY STAR score of 72 out of 100 (grade B), a site energy-use intensity of 72.9 kBtu/ft² and 487 tCO₂e of greenhouse-gas emissions. That score is higher than 38% of the 339 scored office buildings in Denver.
Energize Denver Building Performance Policy · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 72 (band B) |
| Site EUI | 72.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 487 tCO₂e |
| GHG intensity | — |
| Electricity | 643,783 kWh |
| Natural gas | 27,652 therms |
| Gross floor area | 68,051 sq ft |
| Source record | denver:3502:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 72 | ±0 | 72.9 kBtu/ft² | 487 tCO₂e |
| 2022 | 72 | -1 | 72.2 kBtu/ft² | 498 tCO₂e |
| 2021 | 73 | 68.8 kBtu/ft² | 489 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
- 300 South Jackson St.
- 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 Jackson compare with other office buildings in Denver?
The latest disclosures cover 427 office buildings in Denver, out of 3,287 buildings citywide. Jackson's ENERGY STAR score of 72 compares with an average of 71 across the 339 that report a score; it scores higher than 38% of them and lower than 59%. Its site EUI of 72.9 kBtu/ft² is roughly in line with the average of 67.1 kBtu/ft².
At 68,051 sq ft, it is about 57% below the average floor area of 157,927 sq ft for those buildings. Its 1981 construction date is close to 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 Jackson's energy performance changed over time?
BuildingCensus holds 3 Denver disclosures for Jackson, covering report years 2021–2023. Its ENERGY STAR score went from 73 in 2021 to 72 in 2023 (-1 points); its best year on file was 2021, at 73. Site EUI moved from 68.8 kBtu/ft² (2021) to 72.9 kBtu/ft² (2023), an 6% increase. Reported emissions went from 489 tCO₂e to 487 tCO₂e over the same span (down 0%).
What does an ENERGY STAR score of 72 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 72 means the building performs better than about 72% of its national peers. BuildingCensus bands the score into report-card grades; 72 falls in band B — above median (70–84). It sits 3 points below 75, the threshold for ENERGY STAR certification. 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. Jackson's 72.9 kBtu/ft² across 68,051 sq ft works out to about 5 billion Btu (1,454 MWh-equivalent) in 2023. The disclosure also reports 643,783 kWh of electricity and 27,652 therms of natural gas for the year.
Which law requires Jackson to report its energy use?
Jackson 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:3502:2023). 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
- Oneida Towers· 68,022 sq ft · score 93 (A)
- 1201 Auraria Parkway· 67,962 sq ft · score 94 (A)
- 260 Josephine· 67,608 sq ft · score 58 (C)
- 899 Logan, Llc· 67,473 sq ft · score 69 (C)
- 4949 South Syracuse Street· 66,713 sq ft · score 46 (D)
- 1660 Wynkoop· 66,120 sq ft · EUI 78.4 kBtu/ft²
- 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 Jackson's energy grade?
Jackson scores 72 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 Jackson use?
Its 2023 site energy-use intensity was 72.9 kBtu/ft² across 68,051 sq ft, including 643,783 kWh of electricity and 27,652 therms of natural gas.
What are Jackson's carbon emissions?
Jackson reported 487 tCO₂e of greenhouse-gas emissions for 2023.
Where is Jackson?
Jackson is at 300 South Jackson St., in Denver, Colorado 80209.
How big is Jackson and when was it built?
Jackson has 68,051 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1981 as its year built. It is classed as office.
Is Jackson 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, “Jackson, Denver, Colorado — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/denver/jackson-918c1dc6 (data as of July 9, 2026).