Rockville Metro Plaza Ii (Rk39)
Office in Montgomery County, MD · 121 Rockville Pike · 20850
At a glance
Rockville Metro Plaza Ii (Rk39) is a 203,726-square-foot office building at 121 Rockville Pike in Montgomery County, Maryland, built in 2013. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 96 out of 100 (grade A), a site energy-use intensity of 29.8 kBtu/ft² and 523 tCO₂e of greenhouse-gas emissions. That score is higher than 94% of the 325 scored office buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 96 (band A) |
| Site EUI | 29.8 kBtu/ft² |
| Source EUI | 81.1 kBtu/ft² |
| GHG emissions | 523 tCO₂e |
| GHG intensity | — |
| Electricity | 1,700,119 kWh |
| Natural gas | 2,668 therms |
| Gross floor area | 203,726 sq ft |
| Source record | montgomery_county:3666340:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 96 | +4 | 29.8 kBtu/ft² | 523 tCO₂e |
| 2023 | 92 | 33.8 kBtu/ft² | 611 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
- 121 Rockville Pike
- 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 Metro Plaza Ii (Rk39) compare with other office buildings in Montgomery County?
The latest disclosures cover 414 office buildings in Montgomery County, out of 1,766 buildings citywide. Rockville Metro Plaza Ii (Rk39)'s ENERGY STAR score of 96 compares with an average of 63 across the 325 that report a score; it scores higher than 94% of them and lower than 5%. Its site EUI of 29.8 kBtu/ft² is about 55% below the average of 66.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 203,726 sq ft, it is about 54% above the average floor area of 132,356 sq ft for those buildings. It was built in 2013, 26 years later than the group's average year built (1987). 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 Rockville Metro Plaza Ii (Rk39)'s energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for Rockville Metro Plaza Ii (Rk39), covering report years 2023–2024. Its ENERGY STAR score went from 92 in 2023 to 96 in 2024 (+4 points). Site EUI moved from 33.8 kBtu/ft² (2023) to 29.8 kBtu/ft² (2024), a 12% decrease. Reported emissions went from 611 tCO₂e to 523 tCO₂e over the same span (down 14%).
What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 falls in band A — high performer (85–100). 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 Montgomery County, 53% 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. Rockville Metro Plaza Ii (Rk39)'s 29.8 kBtu/ft² across 203,726 sq ft works out to about 6.1 billion Btu (1,779 MWh-equivalent) in 2024. Its source EUI of 81.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,700,119 kWh of electricity and 2,668 therms of natural gas for the year.
Which law requires Rockville Metro Plaza Ii (Rk39) to report its energy use?
Rockville Metro Plaza Ii (Rk39) 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:3666340:2024). 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 office buildings in Montgomery County
- 6001 Executive Blvd· 203,000 sq ft · score 40 (D)
- Piedmont Pointe I· 202,661 sq ft · score 70 (B)
- 1801 Rockville Pike· 197,381 sq ft
- Democracy Center I - 6901 Rockledge Dr· 196,207 sq ft · EUI 33.8 kBtu/ft²
- Bethesda Towers - West· 195,509 sq ft · score 75 (B)
- 131510 - Summit At Washingtonian· 195,484 sq ft · score 64 (C)
- Office buildings in Montgomery County· 414 benchmarked
- 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 Metro Plaza Ii (Rk39)'s energy grade?
Rockville Metro Plaza Ii (Rk39) scores 96 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Rockville Metro Plaza Ii (Rk39) use?
Its 2024 site energy-use intensity was 29.8 kBtu/ft² (81.1 kBtu/ft² source) across 203,726 sq ft, including 1,700,119 kWh of electricity and 2,668 therms of natural gas.
What are Rockville Metro Plaza Ii (Rk39)'s carbon emissions?
Rockville Metro Plaza Ii (Rk39) reported 523 tCO₂e of greenhouse-gas emissions for 2024.
Where is Rockville Metro Plaza Ii (Rk39)?
Rockville Metro Plaza Ii (Rk39) is at 121 Rockville Pike, in Montgomery County, Maryland 20850.
How big is Rockville Metro Plaza Ii (Rk39) and when was it built?
Rockville Metro Plaza Ii (Rk39) has 203,726 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2013 as its year built. It is classed as office.
Is Rockville Metro Plaza Ii (Rk39) 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 Metro Plaza Ii (Rk39), Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/rockville-metro-plaza-ii-rk39-610a328b (data as of October 2, 2026).