Enter electricity consumption in kWh per 100 km, journey distance, unit rate and annual distance. For a charging-cost estimate, consumption should include electricity drawn from the grid. A dashboard figure may measure energy leaving the battery and omit charging losses.
Formula
Journey energy = consumption × kilometres ÷ 100. Journey cost = energy × electricity price. Cost per 100 km = consumption × electricity price. Annual cost uses annual kilometres; the monthly estimate is the annual cost divided by 12.
Worked example
At a grid consumption of 18 kWh/100 km, a 250 km journey requires 45 kWh. Driving 12,000 km over a year uses 2,160 kWh on the same assumption. Multiply each energy total by your chosen unit price.
What the result means
Use a blended rate if charging happens at several prices, weighted by the energy bought at each rate. The monthly result represents average annual driving, not necessarily this month’s journeys.
Electricity price · India
Electricity duty, fuel or power purchase adjustments, fixed charges and subsidies depend on the applicable state and DISCOM rules. No national tax percentage or subsidy is assumed. Slab thresholds, sanctioned-load charges and time-of-day tariffs are not automatically modelled.
Assumptions and limits
Speed, weather, heating, load and route affect consumption. The estimate excludes purchase price, insurance, maintenance, parking and charging session fees.
Questions answered
Are charging losses added automatically?
No. Enter consumption measured from the grid or adjust a battery-based figure before using it.
Can I compare home and public charging?
Yes. Keep consumption and distance fixed, then change the electricity price.
Data sources
- Bureau of Energy Efficiency: Star labelled appliances
- BEE: Appliance label and efficiency questions
- Delhi Electricity Regulatory Commission: Consumer bill guidance
- Ministry of New and Renewable Energy: Rooftop solar
- EPA · EV range and energy testing
Last reviewed: 2026-09-08