EV home vs public charging cost
Session energy: 40 kWh.
- Home at 16¢/kWh → 40 × 0.16 = $6.40
- Public at 45¢/kWh → 40 × 0.45 = $18.00
- Difference → $11.60 for the same energy
At 3.5 mi/kWh, home cost/mile ≈ 0.16/3.5 ≈ $0.046; public ≈ $0.129. Idle fees can widen the gap further. Model your rates in the EV charging cost calculator.