Napa Green Apartments Llc

How does Napa Green Apartments Llc compare with other multifamily housing buildings in California?

The latest disclosures cover 10,630 multifamily housing buildings in California, out of 40,029 buildings citywide. Napa Green Apartments Llc's ENERGY STAR score of 65 compares with an average of 82 across the 9,612 that report a score; it scores higher than 17% of them and lower than 82%. Its site EUI of 43.7 kBtu/ft² is about 27% above the average of 34.4 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 2.5 kgCO₂e/ft² is about 19% above the group average of 2.1 kgCO₂e/ft².

At 128,354 sq ft, it is about 15% below the average floor area of 150,919 sq ft for those buildings. It was built in 1970, 18 years earlier than the group's average year built (1988). 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 Napa Green Apartments Llc's energy performance changed over time?

BuildingCensus holds 4 California disclosures for Napa Green Apartments Llc, covering report years 2021–2024. Its ENERGY STAR score went from 99 in 2021 to 65 in 2024 (-34 points); its best year on file was 2021, at 99. Site EUI moved from 35.2 kBtu/ft² (2021) to 43.7 kBtu/ft² (2024), an 24% increase. Reported emissions went from 237 tCO₂e to 321 tCO₂e over the same span (up 35%).

What does an ENERGY STAR score of 65 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 65 means the building performs better than about 65% of its national peers. BuildingCensus bands the score into report-card grades; 65 falls in band C — below median (55–69). It sits 10 points below 75, the threshold for ENERGY STAR certification. In California, 65% 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. Napa Green Apartments Llc's 43.7 kBtu/ft² across 128,354 sq ft works out to about 5.6 billion Btu (1,644 MWh-equivalent) in 2024. The disclosure also reports 588,241 kWh of electricity and 35,277 therms of natural gas for the year.

Which law requires Napa Green Apartments Llc to report its energy use?

Napa Green Apartments Llc reports under AB 802 (Public Resources Code §25402.10), the legal basis of California's Building Energy Benchmarking Program (statewide), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record california:16880442:2024). AB 802 requires every California commercial building over 50,000 sq ft to report energy use to the CEC annually; the CEC publicly discloses the results statewide.