Rockville Memorial Library
Library in Montgomery County, MD · 21 Maryland Ave · 20850
At a glance
Rockville Memorial Library is a 104,634-square-foot library at 21 Maryland Ave in Montgomery County, Maryland, built in 2006. In its 2024 Montgomery County benchmarking disclosure it reported a site energy-use intensity of 76.2 kBtu/ft² and 538 tCO₂e of greenhouse-gas emissions.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 76.2 kBtu/ft² |
| Source EUI | 140.9 kBtu/ft² |
| GHG emissions | 538 tCO₂e |
| GHG intensity | — |
| Electricity | 1,067,757 kWh |
| Natural gas | 41,021 therms |
| Gross floor area | 104,634 sq ft |
| Source record | montgomery_county:5245036:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 76.2 kBtu/ft² | 538 tCO₂e | |
| 2023 | — | 69.5 kBtu/ft² | 477 tCO₂e |
Compliance context
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)
Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 21 Maryland Ave
- State
- Maryland
- ZIP
- 20850
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Montgomery County · biggest emitters
How does Rockville Memorial Library compare with other buildings in Montgomery County?
The latest disclosures cover 1,766 benchmarked buildings in Montgomery County. Its site EUI of 76.2 kBtu/ft² is roughly in line with the average of 69.3 kBtu/ft².
At 104,634 sq ft, it is about 23% below the average floor area of 136,354 sq ft for those buildings. It was built in 2006, 21 years later than the group's average year built (1985).
How has Rockville Memorial Library's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Rockville Memorial Library, covering report years 2023–2024. Site EUI moved from 69.5 kBtu/ft² (2023) to 76.2 kBtu/ft² (2024), an 10% increase. Reported emissions went from 477 tCO₂e to 538 tCO₂e over the same span (up 13%).
What does a site EUI of 76.2 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. Rockville Memorial Library's 76.2 kBtu/ft² across 104,634 sq ft works out to about 8 billion Btu (2,337 MWh-equivalent) in 2024. Its source EUI of 140.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,067,757 kWh of electricity and 41,021 therms of natural gas for the year.
Which law requires Rockville Memorial Library to report its energy use?
Rockville Memorial Library reports under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21), the legal basis of Montgomery County's Commercial 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 montgomery_county:5245036:2024). Montgomery County's BEPS (Bill 16-21; regulations approved in 2025) sets declining site-EUI standards for buildings of 25,000+ sq ft, with interim and then final standards later this decade and into the 2030s depending on building type.
More library buildings in Montgomery County
- Brig. Gen. Charles Mcgee Library· 88,929 sq ft · EUI 84.6 kBtu/ft²
- Gaithersburg Libraryc· 51,006 sq ft · EUI 65.9 kBtu/ft²
- Germantown Libraryc· 49,183 sq ft · EUI 73.7 kBtu/ft²
- All Montgomery County benchmarked buildings· Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)
- Most efficient large buildings in Montgomery County
- Least efficient large buildings in Montgomery County
- Biggest emitters in Montgomery County
Frequently asked questions
What is Rockville Memorial Library's energy grade?
Rockville Memorial Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 76.2 kBtu/ft².
How much energy does Rockville Memorial Library use?
Its 2024 site energy-use intensity was 76.2 kBtu/ft² (140.9 kBtu/ft² source) across 104,634 sq ft, including 1,067,757 kWh of electricity and 41,021 therms of natural gas.
What are Rockville Memorial Library's carbon emissions?
Rockville Memorial Library reported 538 tCO₂e of greenhouse-gas emissions for 2024.
Where is Rockville Memorial Library?
Rockville Memorial Library is at 21 Maryland Ave, in Montgomery County, Maryland 20850.
How big is Rockville Memorial Library and when was it built?
Rockville Memorial Library has 104,634 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2006 as its year built. It is classed as library.
Is Rockville Memorial Library covered by the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)?
Yes — it appears in the 2024 Commercial Building Energy Benchmarking disclosure, which lists the buildings reporting under the Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21).
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About this data
Source: Commercial Building Energy Benchmarking (Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Rockville Memorial Library, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/rockville-memorial-library-c9660b58 (data as of October 2, 2026).