Location changes the tariff
A charging budget needs the price you pay, not a national headline. Home bills may include time-of-use periods; public networks may charge by energy, time or session and may apply idle fees. The calculator accepts a per-kWh rate. Add fees that do not scale with energy separately.
Weight prices by energy, not visits
Suppose 80% of your charging energy costs $0.17/kWh and 20% costs $0.45/kWh. The weighted energy price is 0.8 × $0.17 + 0.2 × $0.45 = $0.226/kWh. Ten short public sessions can use less energy than one long home session, so counting charging visits can mislead.
Work through a yearly example
At 12,000 miles and 28 kWh/100 miles, the modeled annual energy use is 3,360 kWh. At $0.226/kWh it costs $759.36. Charging entirely at $0.17/kWh costs $571.20. The difference is $188.16 before network fees or equipment costs.
Keep equipment costs separate
A home charger and installation are one-time expenses, not a per-mile electricity charge. Obtain a qualified assessment for installation and circuit requirements. This site estimates energy arithmetic and does not provide electrical installation instructions.