Symbioen research
By Symbioen · Published
How Reliable Are Public EV Chargers in Sweden?
In Q2 2026, public EV charger availability across Symbioen’s Sweden coverage was 95.57%, while 87.4% of status-derived charging sessions were successful. The 8.2 percentage-point gap shows why an available status is useful evidence, but not proof that a driver completed a charging session.
- Period
- 30 March–5 July 2026
- Source
- Public NAP and EVSE (individual charging point) status history
- Method
- Symbioen Index v0.5
- Geography
- Sweden
Sweden Q2 2026 reliability evidence
| Measure | Q2 result | How to read it |
|---|---|---|
| Observed inventory | 9,693 stations · 55,976 EVSEs | Public infrastructure snapshot at the end of the reporting period |
| Symbioen Index coverage | 6,950 scored stations | Stations with enough recent evidence to meet scoring eligibility |
| Availability | 95.57% | Share of covered observed time in a working status |
| Successful charging sessions | 87.4% | Share of status-derived charging sessions that were successful |
| Charging sessions | 3,684,528 | Derived from status transitions, not operator-confirmed billing sessions |
| Latest Symbioen Index | 90.43 / 100 | Composite observed reliability score for the latest complete week |
What do the Sweden figures mean?
Availability and successful charging sessions answer different questions. Availability measures covered time in statuses such as available, charging, occupied or reserved. Successful charging sessions are inferred from credible transitions into active charging.
The measures also use different denominators, so the 8.2-point gap is not a direct failure count. It is a signal that an availability percentage should be reviewed alongside observed charging behaviour, recovery and evidence coverage.
What decisions can this benchmark support?
The public-data baseline gives operators, site owners, public authorities and investors one method for comparing networks, places and time periods. It can show where strong performance is consistent and where a station or portfolio deserves deeper investigation.
- Compare operators and municipalities using the same definitions.
- Track whether infrastructure growth is matched by dependable service.
- Prioritise weak or deteriorating stations for operational review.
- Compare reported performance with independent, time-stamped evidence.
What can public status data not prove?
Public status history does not independently confirm delivered energy, payment completion or every driver attempt. A station that is not scored may simply lack enough recent evidence. Where a decision requires direct proof of charging outcomes, Symbioen can evaluate agreed operator session records or consented fleet and vehicle evidence under a documented scope.