Costco #01042 Redwood City
Supermarket/Grocery Store in California, CA · 2300 Middlefield Road, Redwood City · 94063
At a glance
Costco #01042 Redwood City is a 160,620-square-foot supermarket/grocery store at 2300 Middlefield Road, Redwood City in Redwood City, California, built in 2009. In its 2024 California benchmarking disclosure it reported an ENERGY STAR score of 66 out of 100 (grade C), a site energy-use intensity of 151.9 kBtu/ft² and 1,308 tCO₂e of greenhouse-gas emissions. That score is higher than 24% of the 866 scored supermarket/grocery store buildings in California.
AB 802 (Public Resources Code §25402.10) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 66 (band C) |
| Site EUI | 151.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,308 tCO₂e |
| GHG intensity | 8.1 kgCO₂e/ft² |
| Electricity | 3,652,008 kWh |
| Natural gas | 90,489 therms |
| Gross floor area | 160,620 sq ft |
| Source record | california:6331828:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 66 | -13 | 151.9 kBtu/ft² | 1,308 tCO₂e |
| 2023 | 79 | -8 | 144.8 kBtu/ft² | 1,309 tCO₂e |
| 2022 | 87 | +1 | 124.4 kBtu/ft² | 1,278 tCO₂e |
| 2021 | 86 | -3 | 123.9 kBtu/ft² | 1,174 tCO₂e |
| 2019 | 89 | -1 | 115.2 kBtu/ft² | 1,150 tCO₂e |
| 2018 | 90 | 125.6 kBtu/ft² | 1,308 tCO₂e |
Compliance context
AB 802 (Public Resources Code §25402.10)
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.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 2300 Middlefield Road, Redwood City
- City
- California
- State
- California
- ZIP
- 94063
- Coordinates
- 37.47843, -122.21628
Within ~1 km
Nearby benchmarked buildings
- Redwood Junctionscore —
Other · 221,000 sq ft
Self-Storage Facility · 168,402 sq ft
- Bmr-700 Bay Roadscore —
Laboratory · 133,123 sq ft
- Redwood City (0321)score 91
Retail Store · 117,572 sq ft
- Mresidences Redwood Cityscore 62
Multifamily Housing · 107,899 sq ft
- 1940 Spring Street - Ab802score —
Self-Storage Facility · 89,056 sq ft
See also: most efficient in California · biggest emitters
How does Costco #01042 Redwood City compare with other supermarket/grocery store buildings in California?
The latest disclosures cover 975 supermarket/grocery store buildings in California, out of 40,029 buildings citywide. Costco #01042 Redwood City's ENERGY STAR score of 66 compares with an average of 74 across the 866 that report a score; it scores higher than 24% of them and lower than 74%. Its site EUI of 151.9 kBtu/ft² is roughly in line with the average of 164.4 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 8.1 kgCO₂e/ft² is about 22% below the group average of 10.4 kgCO₂e/ft².
At 160,620 sq ft, it is about twice the average floor area of 76,560 sq ft for those buildings. It was built in 2009, 13 years later than the group's average year built (1996). 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 Costco #01042 Redwood City's energy performance changed over time?
BuildingCensus holds 6 California disclosures for Costco #01042 Redwood City, covering report years 2018, 2019, 2021, 2022, 2023, 2024. Its ENERGY STAR score went from 90 in 2018 to 66 in 2024 (-24 points); its best year on file was 2018, at 90. Site EUI moved from 125.6 kBtu/ft² (2018) to 151.9 kBtu/ft² (2024), an 21% increase. Reported emissions went from 1,308 tCO₂e to 1,308 tCO₂e over the same span (down 0%).
What does an ENERGY STAR score of 66 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 66 means the building performs better than about 66% of its national peers. BuildingCensus bands the score into report-card grades; 66 falls in band C — below median (55–69). It sits 9 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. Costco #01042 Redwood City's 151.9 kBtu/ft² across 160,620 sq ft works out to about 24.4 billion Btu (7,150 MWh-equivalent) in 2024. The disclosure also reports 3,652,008 kWh of electricity and 90,489 therms of natural gas for the year.
Which law requires Costco #01042 Redwood City to report its energy use?
Costco #01042 Redwood City 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:6331828:2024). 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.
More supermarket/grocery store buildings in California
- Costco #01017 Visalia· 160,410 sq ft · score 75 (B)
- Costco #01011 Chico· 160,320 sq ft · score 77 (B)
- Costco #01010 Victorville· 160,019 sq ft · score 81 (B)
- Ca - 4220 Florin Road· 159,609 sq ft · score 98 (A)
- Costco #00663 Concord· 159,131 sq ft · score 67 (C)
- Costco #01001 Tustin Ii· 159,019 sq ft · score 82 (B)
- Supermarket/Grocery Store buildings in California· 975 benchmarked
- All California benchmarked buildings· AB 802 (Public Resources Code §25402.10)
- Most efficient large buildings in California
- Least efficient large buildings in California
- Biggest emitters in California
Frequently asked questions
What is Costco #01042 Redwood City's energy grade?
Costco #01042 Redwood City scores 66 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 California disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Costco #01042 Redwood City use?
Its 2024 site energy-use intensity was 151.9 kBtu/ft² across 160,620 sq ft, including 3,652,008 kWh of electricity and 90,489 therms of natural gas.
What are Costco #01042 Redwood City's carbon emissions?
Costco #01042 Redwood City reported 1,308 tCO₂e of greenhouse-gas emissions (8.1 kgCO₂e/ft²) for 2024.
Where is Costco #01042 Redwood City?
Costco #01042 Redwood City is at 2300 Middlefield Road, Redwood City, in Redwood City, California 94063. Its coordinates are 37.47843, -122.21628 (latitude, longitude), as published in the Building Energy Benchmarking Program (statewide) file.
How big is Costco #01042 Redwood City and when was it built?
Costco #01042 Redwood City has 160,620 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2009 as its year built. It is classed as supermarket/grocery store.
Is Costco #01042 Redwood City covered by AB 802 (Public Resources Code §25402.10)?
Yes — it appears in the 2024 Building Energy Benchmarking Program (statewide) disclosure, which lists the buildings reporting under AB 802 (Public Resources Code §25402.10).
Working with California building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: Building Energy Benchmarking Program (statewide) (AB 802 (Public Resources Code §25402.10)), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “Costco #01042 Redwood City, Redwood City, California — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/california/costco-01042-redwood-city-6a8ca05e (data as of July 9, 2026).