Walnut Creek Climate Scorecard 2025
Population: 70,088
Walnut Creek ranks 5th of 20 Contra Costa communities on the 2025 Contra Costa Climate Scorecard, tied with Danville, with an overall score of 59.9 out of 100. Its strongest performance relative to the county average is in Green power (87.4 vs. 56.2 county average), while its weakest is in Solar (23.4 vs. 32.6 county average).
How does Walnut Creek score on solar?
| Metric | Value |
|---|---|
| Solar capacity | 3,709.71 kW AC |
| Storage capacity | 3,279.9 kWh |
See how every Contra Costa community ranks on Solar & Storage
How does Walnut Creek score on waste?
Walnut Creek reports waste to CalRecycle through the Central Contra Costa Solid Waste Authority (CCCSWA), so it shares this score and rank with the other cities in that authority.
| Metric | Value |
|---|---|
| Programs implemented | 44 programs |
| Per-capita disposal rate | 3.3 lb/person/day |
How does Walnut Creek score on transportation?
| Metric | Value |
|---|---|
| EV charging-port density | 5.35 ports/1,000 registered vehicles |
| ZEV share of current-model-year registrations | 26.59 % |
See how every Contra Costa community ranks on Transportation & EV Charging
How does Walnut Creek score on green power?
| Metric | Value |
|---|---|
| MCE community membership | Yes |
| Municipal 100% renewable enrollment | Yes |
| Community participation enrollment rate | 90.2 % |
| Community Deep Green (100% renewable) opt-up rate | 7.28 % |
How do other Contra Costa communities score?
Where does this data come from?
How these scores are calculated
- US Census Bureau ACS 2024 5-Year API (2024)
- US Census Bureau Place-to-County Relationship File
- California Distributed Generation Statistics, PG&E Rule 21 (2025)
- CalRecycle Local Government Central Diversion Program (2024)
- CalRecycle Recycling and Disposal Reporting System, Report 1 (2025)
- California Energy Commission Vehicle Fuel Type Count by ZIP Code (2025)
- US Census Bureau 2020 ZCTA-to-Place Relationship File (2020)
- US Alternative Fuels Data Center (2025)
- MCE Clean Energy Annual Impact Report (2025)
- US Census Bureau ACS 2024 5-Year Housing Characteristics Table DP04 (2024)
Download the scores: 2025 CSV · 2025 JSON.
© 2026 Roei Burstein and Andrew Johnson, d/b/a Johnson & Burstein TRACE Data Solutions. Licensed under CC BY 4.0.
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