One Bank Street

How does One Bank Street compare with other office buildings in Montgomery County?

The latest disclosures cover 414 office buildings in Montgomery County, out of 1,766 buildings citywide. One Bank Street's ENERGY STAR score of 9 compares with an average of 63 across the 325 that report a score; it scores higher than 4% of them and lower than 94%. Its site EUI of 111.9 kBtu/ft² is about 68% above the average of 66.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group.

At 33,014 sq ft, it is about 75% below the average floor area of 132,356 sq ft for those buildings. It was built in 1973, 14 years earlier 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 One Bank Street's energy performance changed over time?

BuildingCensus holds 2 Montgomery County disclosures for One Bank Street, covering report years 2023–2024. Its ENERGY STAR score went from 5 in 2023 to 9 in 2024 (+4 points). Site EUI moved from 130.8 kBtu/ft² (2023) to 111.9 kBtu/ft² (2024), a 14% decrease. Reported emissions went from 342 tCO₂e to 297 tCO₂e over the same span (down 13%).

What does an ENERGY STAR score of 9 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 9 means the building performs better than about 9% of its national peers. BuildingCensus bands the score into report-card grades; 9 falls in band D — lowest band (1–54). It sits 66 points below 75, the threshold for ENERGY STAR certification. 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. One Bank Street's 111.9 kBtu/ft² across 33,014 sq ft works out to about 3.7 billion Btu (1,083 MWh-equivalent) in 2024. Its source EUI of 272.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 855,791 kWh of electricity and 7,739 therms of natural gas for the year.

Which law requires One Bank Street to report its energy use?

One Bank Street 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:25160403:2024). 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.