Electric vehicle charging cost calculator

Calculate battery energy, electricity drawn from the grid and the cost of charging between two battery percentages.

Last reviewed: 8 September 2026 · Methodology

Calculate

Battery capacity (kWh)0 – 1,000Initial charge (%)0 – 100Target charge (%)0 – 100Charging losses (% of grid energy)0 – 50

Electricity price (INR/kWh)0 – 10,000

Country reference price selected.

₹8.00/kWh is an illustrative input, not an India-wide average or an official electricity tariff. Replace it with the applicable rate for your state, DISCOM, consumer category and consumption slab.

Last reviewed: 9 September 2026

Published prices and supplier examples

Each reference applies only to its stated period, area and customer profile. Fixed charges and partial bill components are shown for context; only comparable variable prices can be applied.

Tata Power-DDL · Delhi · 201–400 kWh/month
4.5 INR/kWh · Base schedule from 01 Oct 2021 · FY26 handbook
Domestic energy charge only, reproduced in the official FY26 customer handbook. This band applies within the household's monthly slab calculation, not to an appliance in isolation. Excludes fixed charges, PPAC/FPPAS, regulatory and pension surcharges, electricity tax and subsidies. The base schedule is published from 1 October 2021; verify current adjustments on your bill. This is not an all-India average or the full cost of a kWh.
Tata Power-DDL · Customer handbook FY26, pp. 9–10 · Last reviewed: 10 September 2026
Context only: this is not a complete variable price for estimating savings.
MSEDCL · Maharashtra · 101–300 kWh/month
10.8 INR/kWh · FY 2026–27 · from 01 Apr 2026
Domestic LT-I(B), sanctioned load below 20 kW, energy charge only. The applicable slab depends on the household's total monthly consumption. Wheeling of ₹1.60/kWh, fixed charges of ₹130/month (₹435 for three-phase), FAC, taxes and any subsidy are separate. This example is not a complete bill, supplier ranking or national average.
MSEDCL · Tariff order 25 March 2026, p. 95 · Last reviewed: 10 September 2026
Context only: this is not a complete variable price for estimating savings.

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Your estimate

Estimate — adjust the assumptions to your situation.

Cost₹320.00

Energy from grid40 kWh

Energy added to battery36 kWh

Illustrative variable rate per kWh. Replace with your bill; fixed charges are excluded.

Enter usable battery capacity, the starting and target charge percentages, your electricity price and charging losses. Use a loss estimate relevant to the charger and conditions. The result is especially useful for comparing home and public energy rates for the same charge.

Formula

Battery energy added = capacity × (target percentage − starting percentage) ÷ 100. Grid energy = battery energy ÷ (1 − loss percentage ÷ 100). Charging cost = grid energy × price per kWh.

Worked example

Charging a 60 kWh usable battery from 20% to 80% adds 36 kWh. If 10% of electricity drawn is lost, the grid supplies 36 ÷ 0.9 = 40 kWh. Apply your tariff to those 40 kWh.

What the result means

Grid energy is the amount relevant when electricity is billed at the charging point. Battery energy is the amount added to storage; the difference represents the selected charging losses.

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

Battery condition, temperature, preconditioning and charger efficiency can change actual consumption. Session fees, parking charges, subscriptions and time-based charging are not included.

Questions answered

Which capacity should I enter?

Use usable capacity where available, as the charge indicator normally relates to the usable battery window.

Why are 10% losses not added as just 10% extra?

Losses are defined as a share of grid energy, so the calculation divides by the retained share.

Methodology · Report an error

Data sources

Last reviewed: 2026-09-08