Most Reliable EV Charging in California
Where is EV charging most reliable in California?
As of June 28, 2026, the California city with the most reliable EV charging is San Diego with a 30-day reliability score of 56% across 9 scored stations.
City figures are the average 30-day reliability score as of June 28, 2026 across scored stations. A machine-readable feed is available at /api/v1/reliability?state=CA.
Cities Ranked by EV Charging Reliability in California
| Rank | City | 30-Day Reliability | Rating | Scored Stations |
|---|---|---|---|---|
| 1 | San Diego | 56% | Needs improvement | 9 |
How We Measure Reliability
Each station's 30-day reliability score blends two signals: automated availability checks (weighted 1×) and driver-reported charging outcomes (weighted 2×, because a real successful or failed charge is a stronger signal than a status ping). A network, state, or city score is the average across its scored stations. Stations need a minimum number of signals before they receive a score, so brand-new or rarely-used locations don't skew the rankings. See our full methodology and data sources.
Frequently Asked Questions
Which city has the most reliable EV charging in California?
As of June 28, 2026, San Diego has the highest average 30-day reliability at 56% across 9 scored stations.
How is EV charging reliability ranked in California?
Each city's figure is the average 30-day reliability across its scored stations (cities need at least 3 scored stations to be ranked). Cities are sorted most to least reliable.