1089As - Gaithersburg, Md
Supermarket/Grocery Store in Montgomery County, MD · 12251 Darnestown Rd · 20878
At a glance
1089As - Gaithersburg, Md is a 51,379-square-foot supermarket/grocery store at 12251 Darnestown Rd in Montgomery County, Maryland, built in 1992. In its 2024 Montgomery County benchmarking disclosure it reported an ENERGY STAR score of 76 out of 100 (grade B), a site energy-use intensity of 173.3 kBtu/ft² and 675 tCO₂e of greenhouse-gas emissions. That score is higher than 55% of the 44 scored supermarket/grocery store buildings in Montgomery County.
Benchmarking Law (Bill 2-14) / BEPS (Bill 16-21) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 76 (band B) |
| Site EUI | 173.3 kBtu/ft² |
| Source EUI | 380.9 kBtu/ft² |
| GHG emissions | 675 tCO₂e |
| GHG intensity | — |
| Electricity | 1,712,011 kWh |
| Natural gas | 30,616 therms |
| Gross floor area | 51,379 sq ft |
| Source record | montgomery_county:5891750:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 76 | +19 | 173.3 kBtu/ft² | 675 tCO₂e |
| 2023 | 57 | 191.0 kBtu/ft² | 751 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
- 12251 Darnestown Rd
- State
- Maryland
- ZIP
- 20878
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 1089As - Gaithersburg, Md compare with other supermarket/grocery store buildings in Montgomery County?
The latest disclosures cover 47 supermarket/grocery store buildings in Montgomery County, out of 1,766 buildings citywide. 1089As - Gaithersburg, Md's ENERGY STAR score of 76 compares with an average of 70 across the 44 that report a score; it scores higher than 55% of them and lower than 43%. Its site EUI of 173.3 kBtu/ft² is roughly in line with the average of 179.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 51,379 sq ft, it is about 17% below the average floor area of 61,992 sq ft for those buildings. Its 1992 construction date is close to the group's average year built (1995). Across all 24 jurisdictions BuildingCensus covers, the 1,646 supermarket/grocery store buildings average an ENERGY STAR score of 71 and a site EUI of 176.1 kBtu/ft².
How has 1089As - Gaithersburg, Md's energy performance changed over time?
BuildingCensus holds 2 Montgomery County disclosures for 1089As - Gaithersburg, Md, covering report years 2023–2024. Its ENERGY STAR score went from 57 in 2023 to 76 in 2024 (+19 points). Site EUI moved from 191.0 kBtu/ft² (2023) to 173.3 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 751 tCO₂e to 675 tCO₂e over the same span (down 10%).
What does an ENERGY STAR score of 76 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 76 means the building performs better than about 76% of its national peers. BuildingCensus bands the score into report-card grades; 76 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 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. 1089As - Gaithersburg, Md's 173.3 kBtu/ft² across 51,379 sq ft works out to about 8.9 billion Btu (2,610 MWh-equivalent) in 2024. Its source EUI of 380.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,712,011 kWh of electricity and 30,616 therms of natural gas for the year.
Which law requires 1089As - Gaithersburg, Md to report its energy use?
1089As - Gaithersburg, Md 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:5891750:2024). 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 supermarket/grocery store buildings in Montgomery County
- 1668As - Rockville, Md· 48,303 sq ft · score 64 (C)
- 0152-Colesville· 47,901 sq ft · score 80 (B)
- 0198-Potomac· 47,720 sq ft · score 68 (C)
- 2848As - Bethesda, Md· 47,524 sq ft · score 80 (B)
- 0161-Rockville· 45,022 sq ft · score 81 (B)
- Lotte Plaza Supermarket· 45,000 sq ft · score 32 (D)
- Supermarket/Grocery Store buildings in Montgomery County· 47 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 1089As - Gaithersburg, Md's energy grade?
1089As - Gaithersburg, Md scores 76 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Montgomery County disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1089As - Gaithersburg, Md use?
Its 2024 site energy-use intensity was 173.3 kBtu/ft² (380.9 kBtu/ft² source) across 51,379 sq ft, including 1,712,011 kWh of electricity and 30,616 therms of natural gas.
What are 1089As - Gaithersburg, Md's carbon emissions?
1089As - Gaithersburg, Md reported 675 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1089As - Gaithersburg, Md?
1089As - Gaithersburg, Md is at 12251 Darnestown Rd, in Montgomery County, Maryland 20878.
How big is 1089As - Gaithersburg, Md and when was it built?
1089As - Gaithersburg, Md has 51,379 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1992 as its year built. It is classed as supermarket/grocery store.
Is 1089As - Gaithersburg, Md 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, “1089As - Gaithersburg, Md, Montgomery County, Maryland — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/montgomery-county/1089as-gaithersburg-md-0d86ab42 (data as of October 2, 2026).