Capital Park Plaza [ (201) I Street SW ]

How does Capital Park Plaza [ (201) I Street SW ] compare with other multifamily housing buildings in Washington, DC?

The latest disclosures cover 1,799 multifamily housing buildings in Washington, DC, out of 6,870 buildings citywide. Capital Park Plaza [ (201) I Street SW ]'s ENERGY STAR score of 77 compares with an average of 72 across the 1,618 that report a score; it scores higher than 47% of them and lower than 51%. Its site EUI of 61.2 kBtu/ft² is about 20% above the average of 51.1 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 4.0 kgCO₂e/ft² is roughly in line with the group average of 3.8 kgCO₂e/ft².

At 289,500 sq ft, it is about twice the average floor area of 136,346 sq ft for those buildings. Its 1965 construction date is close to the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².

How has Capital Park Plaza [ (201) I Street SW ]'s energy performance changed over time?

BuildingCensus holds 12 Washington, DC disclosures for Capital Park Plaza [ (201) I Street SW ], covering report years 2012, 2013, 2014, 2015, 2016, 2017, 2019, 2020, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 60 in 2014 to 77 in 2024 (+17 points); its best year on file was 2016, at 79. Site EUI moved from 77.3 kBtu/ft² (2012) to 61.2 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 3,754 tCO₂e to 1,172 tCO₂e over the same span (down 69%).

What does an ENERGY STAR score of 77 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 77 means the building performs better than about 77% of its national peers. BuildingCensus bands the score into report-card grades; 77 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 Washington, DC, 47% 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. Capital Park Plaza [ (201) I Street SW ]'s 61.2 kBtu/ft² across 289,500 sq ft works out to about 17.7 billion Btu (5,192 MWh-equivalent) in 2024. Its source EUI of 104.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,952,691 kWh of electricity, 110,527 therms of natural gas and 164,141 thousand gallons of water for the year.

Which law requires Capital Park Plaza [ (201) I Street SW ] to report its energy use?

Capital Park Plaza [ (201) I Street SW ] 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:PM3295814:2024). 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.