Tenley-Friendship Library
Library in Washington, DC, DC · 4450 Wisconsin Avenue NW · 20016
At a glance
Tenley-Friendship Library is a 21,472-square-foot library at 4450 Wisconsin Avenue NW in Washington, DC, built in 1959. In its 2024 Washington, DC benchmarking disclosure it reported a site energy-use intensity of 118.5 kBtu/ft² and 195 tCO₂e of greenhouse-gas emissions.
Clean and Affordable Energy Act / BEPS · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 118.5 kBtu/ft² |
| Source EUI | 307.7 kBtu/ft² |
| GHG emissions | 195 tCO₂e |
| GHG intensity | 9.1 kgCO₂e/ft² |
| Electricity | 658,929 kWh |
| Natural gas | 2,959 therms |
| Gross floor area | 21,472 sq ft |
| Source record | dc:PM12004401:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 118.5 kBtu/ft² | 195 tCO₂e | |
| 2023 | — | 92.0 kBtu/ft² | 151 tCO₂e | |
| 2022 | — | 88.1 kBtu/ft² | 152 tCO₂e | |
| 2021 | — | 81.7 kBtu/ft² | 149 tCO₂e | |
| 2020 | — | 85.8 kBtu/ft² | 163 tCO₂e | |
| 2019 | — | 106.1 kBtu/ft² | 196 tCO₂e |
Compliance context
Clean and Affordable Energy Act / BEPS
DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
Ownership
DISTRICT OF COLUMBIA
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Location
- Address
- 4450 Wisconsin Avenue NW
- City
- Washington, DC
- State
- District of Columbia
- ZIP
- 20016
- Coordinates
- 38.94761, -77.07995
Within ~1 km
Nearby benchmarked buildings
- 4000 Wisconsin Avenue NWscore —
Office · 491,311 sq ft
- 4000 Wisconsin Avenue NWscore —
Office · 491,311 sq ft
- Jackson-Reed High Schoolscore 49
K-12 School · 376,448 sq ft
- Woodrow Wilson High Schoolscore 57
K-12 School · 357,563 sq ft
- WCL Tenleyscore —
College/University · 347,027 sq ft
- Cityline at Tenleyscore 85
Multifamily Housing · 323,671 sq ft
See also: most efficient in Washington, DC · biggest emitters
How does Tenley-Friendship Library compare with other library buildings in Washington, DC?
The latest disclosures cover 36 library buildings in Washington, DC, out of 6,870 buildings citywide. Its site EUI of 118.5 kBtu/ft² is about 26% above the average of 93.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.1 kgCO₂e/ft² is about 19% above the group average of 7.6 kgCO₂e/ft².
At 21,472 sq ft, it is about 71% below the average floor area of 73,475 sq ft for those buildings. It was built in 1959, 5 years earlier than the group's average year built (1965).
How has Tenley-Friendship Library's energy performance changed over time?
BuildingCensus holds 6 Washington, DC disclosures for Tenley-Friendship Library, covering report years 2019–2024. Site EUI moved from 106.1 kBtu/ft² (2019) to 118.5 kBtu/ft² (2024), an 12% increase. Reported emissions went from 196 tCO₂e to 195 tCO₂e over the same span (down 1%).
What does a site EUI of 118.5 kBtu/ft² mean?
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. Tenley-Friendship Library's 118.5 kBtu/ft² across 21,472 sq ft works out to about 2.5 billion Btu (746 MWh-equivalent) in 2024. Its source EUI of 307.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 658,929 kWh of electricity and 2,959 therms of natural gas for the year.
Which law requires Tenley-Friendship Library to report its energy use?
Tenley-Friendship Library reports under the Clean and Affordable Energy Act / BEPS, the legal basis of Washington, DC's Building Energy Benchmarking program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record dc:PM12004401:2024). DC's Building Energy Performance Standards (BEPS) require buildings below the performance standard to improve over compliance cycles (the first ends December 31, 2026; later cycles run five years), with penalties for buildings that fail to meet their pathway.
More library buildings in Washington, DC
- Cleveland Park Library· 21,318 sq ft · EUI 61.2 kBtu/ft²
- Cleveland Park Library· 21,318 sq ft · EUI 27.4 kBtu/ft²
- Petworth Library· 21,000 sq ft · EUI 93.8 kBtu/ft²
- Petworth Library· 21,000 sq ft · EUI 85.1 kBtu/ft²
- Woodridge Library· 20,812 sq ft · EUI 72.1 kBtu/ft²
- Georgetown Library· 20,159 sq ft · EUI 109.5 kBtu/ft²
- Library buildings in Washington, DC· 36 benchmarked
- All Washington, DC benchmarked buildings· Clean and Affordable Energy Act / BEPS
- Most efficient large buildings in Washington, DC
- Least efficient large buildings in Washington, DC
- Biggest emitters in Washington, DC
Frequently asked questions
What is Tenley-Friendship Library's energy grade?
Tenley-Friendship Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 118.5 kBtu/ft².
How much energy does Tenley-Friendship Library use?
Its 2024 site energy-use intensity was 118.5 kBtu/ft² (307.7 kBtu/ft² source) across 21,472 sq ft, including 658,929 kWh of electricity and 2,959 therms of natural gas.
What are Tenley-Friendship Library's carbon emissions?
Tenley-Friendship Library reported 195 tCO₂e of greenhouse-gas emissions (9.1 kgCO₂e/ft²) for 2024.
Where is Tenley-Friendship Library?
Tenley-Friendship Library is at 4450 Wisconsin Avenue NW, in Washington, DC 20016. Its coordinates are 38.94761, -77.07995 (latitude, longitude), as published in the Building Energy Benchmarking file.
How big is Tenley-Friendship Library and when was it built?
Tenley-Friendship Library has 21,472 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1959 as its year built. It is classed as library.
Is Tenley-Friendship Library covered by the Clean and Affordable Energy Act / BEPS?
Yes — it appears in the 2024 Building Energy Benchmarking disclosure, which lists the buildings reporting under the Clean and Affordable Energy Act / BEPS.
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About this data
Source: Building Energy Benchmarking (Clean and Affordable Energy Act / BEPS), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Tenley-Friendship Library, Washington, DC — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/washington-dc/tenley-friendship-library-8ecd8295 (data as of July 9, 2026).